Many process-based models of carbon (C) and nitrogen (N) cycles have been developed for northern forest ecosystems. These models are widely used to evaluate the long-term decisions in forest management dealing with effects like particulate pollution, productivity and climate change. Regarding climate change, one of the key questions that have sensitive political implications is whether northern forests will sequester atmospheric C or not. Whilst many process-based models have been tested for accuracy by evaluating or validating against observed data, few have dealt with the complexity of the incorporated procedures to estimate uncertainties associated with model predictions or the sensitivity of these predictions to input factors in a systematic, inter-model comparison fashion. In general, models differ in their underlying attempts to match natural complexities with assumed or imposed model structure and process formulations to estimate model parameters, to gather data and to address issues on scope, scale and natural variations. Uncertainties may originate from model structure, estimation of model parameters, data input, representation of natural variation and scaling exercises. Model structure relates to the mathematical representation of the processes modelled and the type of state variables that a model contains. The modelling of partitioning among above- and below-ground C and N pools and the interdependence among these pools remain a major source of uncertainty in model structure and error propagation. For example, most soil C models use at least three state variables to represent the different types of soil organic matter (SOM). This approach results in creating three artificial SOM pools, assuming that each one contains C compounds with the same turnover rate. In reality, SOM consists of many different types of C compounds with widely different turnover rates. Uncertainty in data and parameter estimates are closely linked. Data uncertainties are associated with high variations in estimating forest biomass, productivity and soil organic matter and their estimates may be incomplete for model initialisation, calibration, validation and sensitivity analysis of generalised predictor models. The scale at which a model is being used also affects the level of uncertainty, as the errors in the prediction of the C and N dynamics differ from site to landscape levels and across climatic regions. If the spatial or temporal scale of a model application is changed, additional uncertainty arises from neglecting natural variability in system variables in time and space. Uncertainty issues are also intimately related to model validation and sensitivity analysis. The estimation of uncertainties is needed to inform decision processes in order to detect the possible corridor of development. Uncertainty in this context is an essential measure of quality for stakeholder and decision makers.
This work reviews the use of heat as a tracer of shallow groundwater movement and describes current temperature-based approaches for estimating streambed water exchanges. Four common hydrologic conditions in stream channels are graphically depicted with the expected underlying streambed thermal responses, and techniques are discussed for installing and monitoring temperature and stage equipment for a range of hydrological environments. These techniques are divided into direct-measurement techniques in streams and streambeds, groundwater techniques relying on traditional observation wells, and remote sensing and other large-scale advanced temperature-acquisition techniques. A review of relevant literature suggests researchers often graphically visualize temperature data to enhance conceptual models of heat and water flow in the near-stream environment and to determine site-specific approaches of data analysis. Common visualizations of stream and streambed temperature patterns include thermographs, temperature envelopes, and one-, two-, and three-dimensional temperature contour plots. Heat and water transport governing equations are presented for the case of transport in streambeds, followed by methods of streambed data analysis, including simple heat-pulse arrival time and heat-loss procedures, analytical and time series solutions, and heat and water transport simulation models. A series of applications of these methods are presented for a variety of stream settings ranging from arid to continental climates. Progressive successes to quantify both streambed fluxes and the spatial extent of streambeds indicate heat-tracing tools help define the streambed as a spatially distinct field (analogous to soil science), rather than simply the lower boundary in stream research or an amorphous zone beneath the stream channel.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2008WR006996","usgsCitation":"Constantz, J., 2008, Heat as a tracer to determine streambed water exchanges: Water Resources Research, v. 46, no. 4, W00D10, 20 p., https://doi.org/10.1029/2008WR006996.","productDescription":"W00D10, 20 p.","costCenters":[],"links":[{"id":476579,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2008wr006996","text":"Publisher Index Page"},{"id":241481,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"4","noUsgsAuthors":false,"publicationDate":"2008-12-02","publicationStatus":"PW","scienceBaseUri":"505a2fe5e4b0c8380cd5d1ab","contributors":{"authors":[{"text":"Constantz, Jim","contributorId":66338,"corporation":false,"usgs":true,"family":"Constantz","given":"Jim","affiliations":[],"preferred":false,"id":436625,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70042390,"text":"70042390 - 2008 - Rapid response of a hydrologic system to volcanic activity: Masaya volcano, Nicaragua","interactions":[],"lastModifiedDate":"2019-03-28T10:43:01","indexId":"70042390","displayToPublicDate":"2008-12-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Rapid response of a hydrologic system to volcanic activity: Masaya volcano, Nicaragua","docAbstract":"Hydrologic systems change in response to volcanic activity, and in turn may be sensitive indicators of volcanic activity. Here we investigate the coupled nature of magmatic and hydrologic systems using continuous multichannel time series of soil temperature collected on the flanks of Masaya volcano, Nicaragua, one of the most active volcanoes in Central America. The soil temperatures were measured in a low-temperature fumarole field located 3.5 km down the flanks of the volcano. Analysis of these time series reveals that they respond extremely rapidly, on a time scale of minutes, to changes in volcanic activity also manifested at the summit vent. These rapid temperature changes are caused by increased flow of water vapor through flank fumaroles during volcanism. The soil temperature response, ~5 °C, is repetitive and complex, with as many as 13 pulses during a single volcanic episode. Analysis of the frequency spectrum of these temperature time series shows that these anomalies are characterized by broad frequency content during volcanic activity. They are thus easily distinguished from seasonal trends, diurnal variations, or individual rainfall events, which triggered rapid transient increases in temperature during 5% of events. We suggest that the mechanism responsible for the distinctive temperature signals is rapid change in pore pressure in response to magmatism, a response that can be enhanced by meteoric water infiltration. Monitoring of distal fumaroles can therefore provide insight into coupled volcanic-hydrologic-meteorologic systems, and has potential as an inexpensive monitoring tool.","language":"English","publisher":"The Geological Society of America","doi":"10.1130/G25210A.1","usgsCitation":"Pearson, S., Connor, C., and Sanford, W., 2008, Rapid response of a hydrologic system to volcanic activity: Masaya volcano, Nicaragua: Geology, v. 36, no. 12, p. 951-954, https://doi.org/10.1130/G25210A.1.","productDescription":"4 p.","startPage":"951","endPage":"954","numberOfPages":"4","ipdsId":"IP-004325","costCenters":[{"id":146,"text":"Branch of Regional Research-Eastern Region","active":false,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":273440,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":273438,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G25210A.1"}],"country":"Nicaragua","otherGeospatial":"Masaya Volcano","volume":"36","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51b300e6e4b01368e589e3ee","contributors":{"authors":[{"text":"Pearson, S.C.P.","contributorId":58535,"corporation":false,"usgs":true,"family":"Pearson","given":"S.C.P.","email":"","affiliations":[],"preferred":false,"id":471452,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Connor, C.B.","contributorId":41653,"corporation":false,"usgs":true,"family":"Connor","given":"C.B.","email":"","affiliations":[],"preferred":false,"id":471451,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanford, W. E. 0000-0002-6624-0280","orcid":"https://orcid.org/0000-0002-6624-0280","contributorId":102112,"corporation":false,"usgs":true,"family":"Sanford","given":"W. E.","affiliations":[],"preferred":false,"id":471453,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70179519,"text":"70179519 - 2008 - Effects of environmental factors on incubation patterns of Greater Sage-Grouse","interactions":[],"lastModifiedDate":"2017-01-04T11:18:35","indexId":"70179519","displayToPublicDate":"2008-11-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3551,"text":"The Condor","active":true,"publicationSubtype":{"id":10}},"title":"Effects of environmental factors on incubation patterns of Greater Sage-Grouse","docAbstract":"Birds in which only one sex incubates the eggs are often faced with a direct conflict between foraging to meet metabolic needs and incubation. Knowledge of environmental and ecological factors that shape life-history strategies of incubation is limited. We used continuous videography to make precise measurements of female Greater Sage-Grouse (Centrocercus urophasianus) incubation constancy (percentage of time spent at the nest in a 24-hour period) and recess duration. We used an information-theoretic approach to evaluate incubation patterns in relation to grouse age, timing of incubation, raven abundance, microhabitat, weather, and food availability. Overall, sage-grouse females showed an incubation constancy of 96% and a distinctive bimodal distribution of brief incubation recesses that peaked at sunset and 30 min prior to sunrise. Grouse typically returned to their nests during low light conditions. Incubation constancy of yearlings was lower than that of adults, particularly in the later stages of incubation. Yearlings spent more time away from nests later in the morning and earlier in the evening compared to adults. Video images revealed that nearly all predation events by Common Ravens (Corvus corax), the most frequently recorded predator at sage-grouse nests, took place during mornings and evenings after sunrise and before sunset, respectively. These were the times of the day when sage-grouse typically returned from incubation recesses. Recess duration was negatively related to raven abundance. We found evidence that incubation constancy increased with greater visual obstruction, usually from vegetation, of nests. An understanding of how incubation patterns relate to environmental factors will help managers make decisions aimed at increasing productivity through successful incubation.
","language":"English","publisher":"American Ornithological Society","doi":"10.1525/cond.2008.8579","usgsCitation":"Coates, P.S., and Delehanty, D., 2008, Effects of environmental factors on incubation patterns of Greater Sage-Grouse: The Condor, v. 110, no. 4, p. 627-638, https://doi.org/10.1525/cond.2008.8579.","productDescription":"12 p.","startPage":"627","endPage":"638","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":476590,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1525/cond.2008.8579","text":"Publisher Index Page"},{"id":332836,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"110","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"586e182ee4b0f5ce109fcb11","contributors":{"authors":[{"text":"Coates, Peter S. 0000-0003-2672-9994 pcoates@usgs.gov","orcid":"https://orcid.org/0000-0003-2672-9994","contributorId":3263,"corporation":false,"usgs":true,"family":"Coates","given":"Peter","email":"pcoates@usgs.gov","middleInitial":"S.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":657545,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Delehanty, David J.","contributorId":86683,"corporation":false,"usgs":true,"family":"Delehanty","given":"David J.","affiliations":[],"preferred":false,"id":657546,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70184304,"text":"70184304 - 2008 - Tracking sea turtles in the Everglades","interactions":[],"lastModifiedDate":"2017-03-07T09:38:34","indexId":"70184304","displayToPublicDate":"2008-10-31T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1496,"text":"Endangered Species Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Tracking sea turtles in the Everglades","docAbstract":"The U.S. Geological Survey (USGS) has a long history of conducting research on threatened, endangered, and at-risk species inhabiting both terrestrial and marine environments, particularly those found within national parks and protected areas. In the coastal Gulf of Mexico region, for example, USGS scientist Donna Shaver at Padre Island National Seashore in Texas has focused on “headstarting” hatchlings of the rare Kemp’s ridley sea turtle (Lepidochelys kempii). She is also analyzing trends in sea turtle strandings onshore and interactions with Gulf shrimp fisheries.
Along south Florida’s Gulf coast, the USGS has focused on research and monitoring for managing the greater Everglades ecosystem. One novel project involves the endangered green sea turtle (Chelonia mydas). The ecology and movements of adult green turtles are reasonably well understood, largely due to decades of nesting beach monitoring by a network of researchers and volunteers. In contrast, relatively little is known about the habitat requirements and movements of juvenile and subadult sea turtles of any species in their aquatic environment.
","language":"English","publisher":"U.S. Fish and Wildlife","usgsCitation":"Hart, K.M., 2008, Tracking sea turtles in the Everglades: Endangered Species Bulletin, 4 p.","productDescription":"4 p.","onlineOnly":"Y","costCenters":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":336927,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":336926,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.fws.gov/endangered/news/pdf/bulletin_fall2008.pdf","text":"Document","size":"4,017 KB","linkFileType":{"id":1,"text":"pdf"},"description":"Document"}],"country":"United States","state":"Florida","otherGeospatial":"Everglades National Park","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -82.177734375,\n 24.512141466217635\n ],\n [\n -79.7442626953125,\n 24.512141466217635\n ],\n [\n -79.7442626953125,\n 26.31311263768267\n ],\n [\n -82.177734375,\n 26.31311263768267\n ],\n [\n -82.177734375,\n 24.512141466217635\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58bfd4f9e4b014cc3a3ba4ec","contributors":{"authors":[{"text":"Hart, Kristin M.","contributorId":147610,"corporation":false,"usgs":false,"family":"Hart","given":"Kristin","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":680909,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":86281,"text":"ofr20081305 - 2008 - Mormon cricket control in Utah's west desert - Evaluation of impacts of the pesticide Diflubenzuron on nontarget arthropod communities","interactions":[],"lastModifiedDate":"2017-04-11T09:51:55","indexId":"ofr20081305","displayToPublicDate":"2008-10-04T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2008-1305","title":"Mormon cricket control in Utah's west desert - Evaluation of impacts of the pesticide Diflubenzuron on nontarget arthropod communities","docAbstract":"Grasshopper and Mormon cricket (Orthoptera) populations periodically build to extremely high numbers and can cause significant economic damage in rangelands and agricultural fields of the Great Plains and Intermountain West. A variety of insecticides have been applied to control population outbreaks, with recent efforts directed at minimizing impacts to nontarget fauna in treated ecosystems. A relatively new insecticide for control of Orthoptera is diflubenzuron, which acts to inhibit chitin production, ultimately causing death during the molt following ingestion of the insecticide. All arthropods, including insects, mites, and crustaceans, use chitin to build their exoskeletons and will die if they are unable to produce it during the next molt. Diflubenzuron is not taxon specific—it affects all arthropods that ingest it, except adult insects, which do not molt. Consequently, application of this pesticide has the potential to significantly reduce not only target populations but all terrestrial and aquatic arthropods within treatment zones.
Some research has been done in the Great Plains on the impact of diflubenzuron on nontarget arthropods in the context of grasshopper-control programs, but no work has been done in the Great Basin in Mormon cricket-control areas. This study was instigated in anticipation of the need for extensive control of Orthoptera outbreaks in Utah’s west desert during 2005, and it was designed to sample terrestrial and aquatic arthropod communities in both treated and untreated zones. Three areas were sampled: Grouse Creek, Ibapah, and Vernon. High mortality of Mormon cricket eggs in the wet, cool spring of 2005 restricted the need to control Mormon crickets to Grouse Creek. Diflubenzuron was applied (aerial reduced agent-area treatment) in May 2005. Terrestrial and aquatic arthropod communities were sampled before and after application of diflubenzuron in the Grouse Creek area of northwestern Utah in May and June of 2005. In July 2005, U.S. Geological Survey scientists sampled areas in Ibapah and Vernon that had been treated with diflubenzuron in 2004, along with adjacent untreated areas. Pitfall traps at four treated and four untreated sites were used to collect ground-dwelling terrestrial arthropods. Semiquantitative sweep surveys of aquatic habitats were made before treatment, 2 weeks after treatment, and 4 months after treatment (after leaf fall) at Grouse Creek. One-year post-treatment samples were collected by using the same methods for terrestrial and aquatic arthropods at Ibapah and Vernon in July 2005 (treatments applied in June 2004).
More than 124,000 terrestrial arthropods were collected from the three study areas, and more than 200,000 aquatic invertebrates were collected in the aquatic samples. Direct effects of diflubenzuron on aquatic and terrestrial arthropod communities were not apparent in our data from Grouse Creek. The treatment was designed to avoid spraying pesticide on water bodies, and no measurable effects on aquatic communities from either springs or streams were observed, with the exception of the reduction of taxa richness at Vernon (a result confounded by elevational differences in the treatment and nontreatment zones). Some trends indicate diflubenzuron may affect some terrestrial taxa. Ant communities showed some differences, with possible lag effects at Ibapah and Vernon. Forelius was more abundant, while Tapinoma and, perhaps, Formica declined in treated zones in these two study areas. Solenopsis also was more numerous at treated Ibapah sites but varied without pattern at Vernon. Scorpions were abundant at Grouse Creek and Ibapah but rare at Vernon. Numbers did not change during several weeks at Grouse Creek, but at Ibapah, numbers at treated sites were much lower than at untreated sites. The Lygaeidae (in the order Hemiptera) were more abundant in the untreated zones at Ibapah and Vernon, although significantly so only at Ibapah. Lygaeidae were absent from the treated zone at Grouse Creek (before and after treatment) but were present after treatment in the untreated zone. Additional research is recommended to determine more explicitly whether these taxa are sensitive to diflubenzuron applications in the Great Basin.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20081305","usgsCitation":"Graham, T.B., Brasher, A., and Close, R.N., 2008, Mormon cricket control in Utah's west desert - Evaluation of impacts of the pesticide Diflubenzuron on nontarget arthropod communities: U.S. Geological Survey Open-File Report 2008-1305, vi, 82 p., https://doi.org/10.3133/ofr20081305.","productDescription":"vi, 82 p.","numberOfPages":"92","onlineOnly":"Y","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true},{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"links":[{"id":194837,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":339522,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2008/1305/of2008-1305.pdf"},{"id":11865,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2008/1305/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Utah","otherGeospatial":"Grouse Creek","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -114,38 ], [ -114,42 ], [ -112,42 ], [ -112,38 ], [ -114,38 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b474d","contributors":{"authors":[{"text":"Graham, Tim B.","contributorId":105003,"corporation":false,"usgs":true,"family":"Graham","given":"Tim","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":297397,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brasher, Anne M.D.","contributorId":33686,"corporation":false,"usgs":true,"family":"Brasher","given":"Anne M.D.","affiliations":[],"preferred":false,"id":297396,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Close, Rebecca N.","contributorId":16803,"corporation":false,"usgs":true,"family":"Close","given":"Rebecca","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":297395,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70176354,"text":"70176354 - 2008 - Mapping \"old\" versus \"young\" piñon-juniper stands with a predictive topo-climatic model in north-central New Mexico, USA","interactions":[],"lastModifiedDate":"2018-01-23T10:40:02","indexId":"70176354","displayToPublicDate":"2008-10-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Mapping \"old\" versus \"young\" piñon-juniper stands with a predictive topo-climatic model in north-central New Mexico, USA","docAbstract":"Piñon pine and juniper woodlands in the southwestern United States are often represented as an expanding and even invasive vegetation type, a legacy of historic grazing, and culpable in the degradation of western rangelands. A long-standing emphasis on forage production, in combination with recent hazard fuel concerns, has prompted a new era of woodland management with stated restoration objectives. Yet the extent and dynamics of piñon–juniper communities that predate intensive Euro-American settlement activities are poorly known or understood, while the intrinsic ecological, aesthetic, and economic values of old-growth woodlands are often overlooked. Historical changes in piñon–juniper stands include two related, but poorly differentiated processes: recent tree expansion into grass- or shrub-dominated (i.e., non-woodland) vegetation and thickening or infilling of savanna or mosaic woodlands predating settlement. Our work addresses the expansion pattern, modeling the occurrence of “older” savanna and woodland stands extant prior to 1850 in contrast to “younger” piñon–juniper growth of more recent, postsettlement origin. We present criteria in the form of a diagnostic key for distinguishing “older,” pre-Euro-American settlement piñon–juniper from “younger” (post-1850) stands and report results of predictive modeling and mapping efforts within a north-central New Mexico study area. Selected models suggest a primary role for soil moisture in the current distribution of “old” vs. “young” piñon–juniper stands. Presettlement era woodlands are shown to occupy a discrete ecological space, defined by the interaction of effective (seasonal) moisture with landform setting and fine-scale (soil/water) depositional patterns. “Older” stands are generally found at higher elevations or on skeletal soils in upland settings, while “younger” stands (often dominated by one-seed juniper, Juniperus monosperma) are most common at lower elevations or in productive, depositional settings. Modeling at broad regional scales can enhance our general understanding of piñon–juniper ecology, while predictive mapping of local areas has potential to provide products useful for land management. Areas of the southwestern United States with strong monsoonal (summer moisture) patterns appear to have been the most susceptible to historical woodland expansion, but even here the great majority of extant piñon–juniper has presettlement origins (although widely thickened and infilled historically), and old-growth structure is not uncommon in appropriate upland settings.
","language":"English","publisher":"Ecological Society of America","doi":"10.1890/07-0847.1","usgsCitation":"Jacobs, B.F., Romme, W., and Allen, C.D., 2008, Mapping \"old\" versus \"young\" piñon-juniper stands with a predictive topo-climatic model in north-central New Mexico, USA: Ecological Applications, v. 18, no. 7, p. 1627-1641, https://doi.org/10.1890/07-0847.1.","productDescription":"15 p.","startPage":"1627","endPage":"1641","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":328427,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57d3dd3be4b0571647d19aa3","contributors":{"authors":[{"text":"Jacobs, B. F.","contributorId":174520,"corporation":false,"usgs":false,"family":"Jacobs","given":"B.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":648478,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Romme, W.H.","contributorId":89307,"corporation":false,"usgs":true,"family":"Romme","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":648479,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Allen, Craig D. 0000-0002-8777-5989 craig_allen@usgs.gov","orcid":"https://orcid.org/0000-0002-8777-5989","contributorId":2597,"corporation":false,"usgs":true,"family":"Allen","given":"Craig","email":"craig_allen@usgs.gov","middleInitial":"D.","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":648480,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":86245,"text":"pp1746 - 2008 - Geographic Names of Iceland's Glaciers: Historic and Modern","interactions":[],"lastModifiedDate":"2012-02-10T00:11:49","indexId":"pp1746","displayToPublicDate":"2008-09-27T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1746","title":"Geographic Names of Iceland's Glaciers: Historic and Modern","docAbstract":"Climatic changes and resulting glacier fluctuations alter landscapes. In the past, such changes were noted by local residents who often documented them in historic annals; eventually, glacier variations were recorded on maps and scientific reports. In Iceland, 10 glacier place-names are to be found in Icelandic sagas, and one of Iceland's ice caps, Snaefellsjokull, appeared on maps of Iceland published in the 16th century. In the late 17th century, the first description of eight of Iceland's glaciers was written. Therefore, Iceland distinguishes itself in having a more than 300-year history of observations by Icelanders on its glaciers. A long-term collaboration between Oddur Sigurdsson and Richard S. Williams, Jr., led to the authorship of three books on the glaciers of Iceland. Much effort has been devoted to documenting historical glacier research and related nomenclature and to physical descriptions of Icelandic glaciers by Icelanders and other scientists from as far back as the Saga Age to recent (2008) times. The first book, Icelandic Ice Mountains, was published by the Icelandic Literary Society in 2004 in cooperation with the Icelandic Glaciological Society and the International Glaciological Society. Icelandic Ice Mountains was a glacier treatise written by Sveinn Palsson in 1795 and is the first English translation of this important scientific document. Icelandic Ice Mountains includes a Preface, including a summary of the history and facsimiles of page(s) from the original manuscript, a handwritten copy, and an 1815 manuscript (without maps and drawings) by Sveinn Palsson on the same subject which he wrote for Rev. Ebenezer Henderson; an Editor's Introduction; 82 figures, including facsimiles of Sveinn Palsson's original maps and perspective drawings, maps, and photographs to illustrate the text; a comprehensive Index of Geographic Place-Names and Other Names in the treatise; References, and 415 Endnotes.\r\n\r\nProfessional Paper 1746 (this book) is the second of the three books; it is being published in both English and Icelandic editions. This book provides information about all named glaciers in Iceland, historic and modern. Descriptions, with geographic coordinates, and bibliographic citations to all glacier place-names on published maps, books, and scientific articles are included. Maps, oblique aerial photographs, ground photographs, and satellite images document each of the 269 modern named glaciers of Iceland.\r\n\r\nThe third book, Glaciers of Iceland, is Chapter D of the 11-chapter [volume] U.S. Geological Survey Professional Paper 1386-A-K. Chapter D includes a 1:500,000-scale Map of the Glaciers of Iceland; it is a comprehensive historical and modern review and assessment of what is currently known about glaciers in Iceland's eight Regional Glacier Groups from a review of the scientific literature and from analysis of maps and remotely sensed data (ground, airborne, and satellite); topics include geology and geography, climate and climate variability, types of glaciers, history of glacier variation (including the 21 surge-type glaciers), and frequency and magnitude of volcanic and lacustrine jokulhlaups.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/pp1746","isbn":"9780607978159","collaboration":"Prepared in cooperation with the National Energy Authority (Iceland)","usgsCitation":"Sigurdsson, O., and Williams, R., 2008, Geographic Names of Iceland's Glaciers: Historic and Modern: U.S. Geological Survey Professional Paper 1746, Total: 246 p.; Report: x, 225 p.; Appendix: A1-A7, https://doi.org/10.3133/pp1746.","productDescription":"Total: 246 p.; Report: x, 225 p.; Appendix: A1-A7","additionalOnlineFiles":"Y","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":195078,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/pp1746.jpg"},{"id":11827,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/1746/","linkFileType":{"id":5,"text":"html"}}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -25,63 ], [ -25,67 ], [ -13,67 ], [ -13,63 ], [ -25,63 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ce4b07f02db6a95b0","contributors":{"authors":[{"text":"Sigurdsson, Oddur","contributorId":38666,"corporation":false,"usgs":false,"family":"Sigurdsson","given":"Oddur","email":"","affiliations":[],"preferred":false,"id":297282,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Williams, Richard S. Jr.","contributorId":90679,"corporation":false,"usgs":true,"family":"Williams","given":"Richard S.","suffix":"Jr.","affiliations":[],"preferred":false,"id":297283,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70204444,"text":"70204444 - 2008 - Savanna tree density, herbivores, and the herbaceous community: Bottom-up vs. top-down effects","interactions":[],"lastModifiedDate":"2019-07-23T15:30:11","indexId":"70204444","displayToPublicDate":"2008-08-01T15:15:47","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Savanna tree density, herbivores, and the herbaceous community: Bottom-up vs. top-down effects","docAbstract":"Herbivores choose their habitats both to maximize forage intake and to minimize their risk of predation. For African savanna herbivores, the available habitats range in woody cover from open areas with few trees to dense, almost‐closed woodlands. This variation in woody cover or density can have a number of consequences for herbaceous species composition, cover, and productivity, as well as for ease of predator detection and avoidance. Here, we consider two alternative possibilities: first, that tree density affects the herbaceous vegetation, with concomitant “bottom‐up” effects on herbivore habitat preferences; or, second, that tree density affects predator visibility, mediating “top‐down” effects of predators on herbivore habitat preferences. We sampled sites spanning a 10‐fold range of tree densities in an Acacia drepanolobium‐dominated savanna in Laikipia, Kenya, for variation in (1) herbaceous cover, composition, and species richness; (2) wild and domestic herbivore use; and (3) degree of visibility obstruction by the tree layer. We then used structural equation modeling to consider the potential influences that tree density may have on herbivores and herbaceous community properties. Tree density was associated with substantial variation in herbaceous species composition and richness. Cattle exhibited a fairly uniform use of the landscape, whereas wild herbivores, with the exception of elephants, exhibited a strong preference for areas of low tree density. Model results suggest that this was not a response to variation in herbaceous‐community characteristics, but rather a response to the greater visibility associated with more open places. Elephants, in contrast, preferred areas with higher densities of trees, apparently because of greater forage availability. These results suggest that, for all but the largest species, top‐down behavioral effects of predator avoidance on herbivores are mediated by tree density. This, in turn, appears to have cascading effects on the herbaceous vegetation. These results shed light on one of the major features of the “landscape of fear” in which African savanna herbivores exist.
","language":"English","publisher":"Wiley","doi":"10.1890/07-1250.1","usgsCitation":"Riginos, C., and Grace, J.B., 2008, Savanna tree density, herbivores, and the herbaceous community: Bottom-up vs. top-down effects: Ecology, v. 89, no. 8, p. 2228-2238, https://doi.org/10.1890/07-1250.1.","productDescription":"11 p.","startPage":"2228","endPage":"2238","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":365894,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Kenya","county":"Laikipia County","otherGeospatial":"Mpala Research Center","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 36.7218017578125,\n 0.012359619044768358\n ],\n [\n 37.2271728515625,\n 0.012359619044768358\n ],\n [\n 37.2271728515625,\n 0.4257162976927995\n ],\n [\n 36.7218017578125,\n 0.4257162976927995\n ],\n [\n 36.7218017578125,\n 0.012359619044768358\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"89","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Riginos, Corinna","contributorId":98606,"corporation":false,"usgs":true,"family":"Riginos","given":"Corinna","affiliations":[],"preferred":false,"id":766933,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grace, James B. 0000-0001-6374-4726 gracej@usgs.gov","orcid":"https://orcid.org/0000-0001-6374-4726","contributorId":884,"corporation":false,"usgs":true,"family":"Grace","given":"James","email":"gracej@usgs.gov","middleInitial":"B.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true},{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":766934,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70179550,"text":"70179550 - 2008 - Conservation genetics and species recovery","interactions":[],"lastModifiedDate":"2017-01-04T13:13:18","indexId":"70179550","displayToPublicDate":"2008-08-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1496,"text":"Endangered Species Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Conservation genetics and species recovery","docAbstract":"Recent advances in molecular genetics have proven to be extremely useful in efforts to conserve imperiled species. Genetics data are used to identify appropriate units of management (e.g., populations, metapopulations), effective sizes of breeding populations, population mixing rates, and other variables. These data help managers make decisions about which populations to preserve, whether to move individuals from one site to another, how to breed species most effectively in captivity, and even, in some cases, what taxonomic classification is most appropriate. Many U.S. Geological Survey (USGS) Science Centers and Cooperative Fish and Wildlife Research Units have developed capabilities in genetics research. The two case studies that follow illustrate how USGS geneticists are assisting managers in recovering species on the brink.
","language":"English","publisher":"U.S. Fish and Wildlife Service","usgsCitation":"Pendleton, E., Vandergast, A.G., and King, T., 2008, Conservation genetics and species recovery: Endangered Species Bulletin, v. 33, no. 3.","productDescription":"3 p.","startPage":"59","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":332873,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":332872,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.fws.gov/endangered/news/pdf/bulletin_fall2008.pdf","linkFileType":{"id":1,"text":"pdf"}}],"volume":"33","issue":"3","edition":"57","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"586e182ee4b0f5ce109fcb15","contributors":{"authors":[{"text":"Pendleton, Ed","contributorId":177961,"corporation":false,"usgs":false,"family":"Pendleton","given":"Ed","email":"","affiliations":[],"preferred":false,"id":657668,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vandergast, Amy G. 0000-0002-7835-6571","orcid":"https://orcid.org/0000-0002-7835-6571","contributorId":57201,"corporation":false,"usgs":true,"family":"Vandergast","given":"Amy","middleInitial":"G.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":657669,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"King, T.L.","contributorId":93416,"corporation":false,"usgs":true,"family":"King","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":657670,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":85828,"text":"fs20083056 - 2008 - A Landscape Indicator Approach to the Identification and Articulation of the Ecological Consequences of Land Cover Change in the Chesapeake Bay Watershed, 1970-2000","interactions":[],"lastModifiedDate":"2012-02-02T00:14:33","indexId":"fs20083056","displayToPublicDate":"2008-07-10T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2008-3056","title":"A Landscape Indicator Approach to the Identification and Articulation of the Ecological Consequences of Land Cover Change in the Chesapeake Bay Watershed, 1970-2000","docAbstract":"The advancement of geographic science in the area of land surface status and trends and land cover change is at the core of the current geographic scientific research of the U.S. Geological Survey (USGS) (McMahon and others, 2005). Perhaps the least developed or articulated aspects of USGS land change science have been the identification and analysis of the ecological consequences of land cover change.\r\n\r\nChanges in land use and land cover significantly affect the ability of ecosystems to provide essential ecological goods and services, which, in turn, affect the economic, public health, and social benefits that these ecosystems provide. One of the great scientific challenges for geographic science is to understand and calibrate the effects of land use and land cover change and the complex interaction between human and biotic systems at a variety of natural, geographic, and political scales.\r\n\r\nUnderstanding the dynamics of land surface change requires an increased understanding of the complex nature of human-environmental systems and will require a suite of scientific tools that include traditional geographic data and analysis methods, such as remote sensing and geographic information systems (GIS), as well as innovative approaches to understanding the dynamics of complex systems. One such approach that has gained much recent scientific attention is the landscape indicator, or landscape assessment, approach, which has been developed with the emergence of the science of landscape ecology.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/fs20083056","usgsCitation":"Slonecker, T., 2008, A Landscape Indicator Approach to the Identification and Articulation of the Ecological Consequences of Land Cover Change in the Chesapeake Bay Watershed, 1970-2000: U.S. Geological Survey Fact Sheet 2008-3056, 3 p., https://doi.org/10.3133/fs20083056.","productDescription":"3 p.","onlineOnly":"Y","temporalStart":"1970-01-01","temporalEnd":"2000-12-31","costCenters":[{"id":242,"text":"Eastern Geographic Science Center","active":true,"usgs":true}],"links":[{"id":124585,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_2008_3056.jpg"},{"id":11523,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/2008/3056/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd495ae4b0b290850ef15f","contributors":{"authors":[{"text":"Slonecker, Terrence","contributorId":13701,"corporation":false,"usgs":true,"family":"Slonecker","given":"Terrence","email":"","affiliations":[],"preferred":false,"id":296490,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":85814,"text":"ofr20081157 - 2008 - Mapping of Florida's coastal and marine resources: Setting priorities workshop","interactions":[],"lastModifiedDate":"2023-12-08T12:05:07.967619","indexId":"ofr20081157","displayToPublicDate":"2008-07-03T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2008-1157","title":"Mapping of Florida's coastal and marine resources: Setting priorities workshop","docAbstract":"The importance of mapping habitats and bioregions as a means to improve resource management has become increasingly clear. Large areas of the waters surrounding Florida are unmapped or incompletely mapped, possibly hindering proper management and good decisionmaking. Mapping of these ecosystems is among the top priorities identified by the Florida Oceans and Coastal Council in their Annual Science Research Plan. However, lack of prioritization among the coastal and marine areas and lack of coordination of agency efforts impede efficient, cost–effective mapping.
A workshop on Mapping of Florida’s Coastal and Marine Resources was sponsored by the U.S. Geological Survey (USGS), Florida Department of Environmental Protection (FDEP), and Southeastern Regional Partnership for Planning and Sustainability (SERPPAS). The workshop was held at the USGS Florida Integrated Science Center (FISC) in St. Petersburg, FL, on February 7-8, 2007. The workshop was designed to provide State, Federal, university, and non-governmental organizations (NGOs) the opportunity to discuss their existing data coverage and create a prioritization of areas for new mapping data in Florida. Specific goals of the workshop were multifold, including to:
Over 90 invited participants representing more than 30 State and Federal agencies, universities, NGOs, and private industries played a large role in the success of this two-day workshop. State of Florida agency participants created a ranked priority order for mapping 13 different regions around Florida. The data needed for each of the 13 priority regions were outlined. A matrix considering State and Federal priorities was created, utilizing input from all agencies. The matrix showed overlapping interests of the entities and will allow for partnering and leveraging of resources.
The five most basic mapping needs were determined to be bathymetry, high-vertical resolution coastline for sea-level rise scenarios, shoreline change, subsurface geology, and benthic habitats at sufficient scale. There was a clear convergence on the need to coordinate mapping activities around the state. Suggestions for coordination included:
There was general consensus on the need to adopt a single habitat classification system and a strategy to accommodate existing systems smoothly. Unresolved aspects of the systems warrant that a separate workshop would be needed to work out details.
Participants recognized that the State priority list would necessarily be updated periodically. An annual review of priorities would facilitate information exchange, mapping activities updates, and re-allocation of funding among changing priorities.
It was recognized that mapping of State waters would take billions of dollars and in light of tightening budgets there was need for processes that could be used to appropriate or leverage monies for mapping and reduce data-collection costs. Fourteen different avenues were explored. There was a clear consensus that the linking of public to private partnerships to support mapping was imperative, and ways to achieve this were discussed.
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fry","interactions":[],"lastModifiedDate":"2018-10-12T09:34:13","indexId":"70189170","displayToPublicDate":"2008-06-18T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2177,"text":"Journal of Aquatic Animal Health","active":true,"publicationSubtype":{"id":10}},"title":"Thiamine deficiency effects on the vision and foraging ability of lake trout fry","docAbstract":"The exact causes of the historical recruitment failures of Great Lakes lake trout Salvelinus namaycush are unknown. Thiamine deficiency has been associated with neurological abnormalities in lake trout that lead to early mortality syndrome (EMS) in salmonine swim-up fry, and EMS-related mortality at the swim-up stage is a factor that contributes to the reproductive failure of lake trout populations in the Great Lakes. The potential for adverse effects of thiamine deficiency beyond the swim-up stage is unknown. We investigated the effects of low egg thiamine on behavioral functions in young, post-swim-up lake trout fry. The behavioral endpoints included visual acuity and prey capture rates in the same groups of lake trout fry from each family. Low-thiamine eggs were produced by feeding lake trout broodstock diets entailing thiaminase activity. The thiamine content of the spawned eggs ranged from 0.3 to 26.1 nmol/g. Both visual acuity and prey capture rates were affected by the thiamine content of the eggs. The visual acuity of lake trout was severely affected by low egg thiamine, mainly at thiamine concentrations below the threshold of 0.8 nmol/g but also at higher concentrations in field-collected eggs. Feeding was also reduced with low egg thiamine content. The reduction of prey capture rates was dramatic below 0.8 nmol/g and less dramatic, but still significant, in a portion of the families with egg thiamine concentrations of less than 5.0 nmol/g from both laboratory and field samples. Approximately one-third of the latter families had reduced feeding rates. Deficits in visual acuity may be part of the mechanism leading to decreased feeding rates in these fry. The effects of low egg thiamine on both of the behavioral endpoints studied increase the risk of low recruitment rates in Great Lakes lake trout populations.
","language":"English","publisher":"American Fisheries Society","doi":"10.1577/H08-025.1","usgsCitation":"Tillitt, D.E., Zajicek, J.L., Claunch, R., Honeyfield, D.C., Fitzsimons, J.D., and Brown, S.B., 2008, Thiamine deficiency effects on the vision and foraging ability of lake trout fry: Journal of Aquatic Animal Health, v. 21, no. 4, p. 315-325, https://doi.org/10.1577/H08-025.1.","productDescription":"11 p.","startPage":"315","endPage":"325","ipdsId":"IP-007546","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true},{"id":34983,"text":"Contaminant Biology Program","active":true,"usgs":true}],"links":[{"id":343296,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"4","noUsgsAuthors":false,"publicationDate":"2009-12-01","publicationStatus":"PW","scienceBaseUri":"595dfabae4b0d1f9f056a7cd","contributors":{"authors":[{"text":"Tillitt, Donald E. 0000-0002-8278-3955 dtillitt@usgs.gov","orcid":"https://orcid.org/0000-0002-8278-3955","contributorId":1875,"corporation":false,"usgs":true,"family":"Tillitt","given":"Donald","email":"dtillitt@usgs.gov","middleInitial":"E.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":703346,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zajicek, James L. jzajicek@usgs.gov","contributorId":2775,"corporation":false,"usgs":true,"family":"Zajicek","given":"James","email":"jzajicek@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":true,"id":703347,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Claunch, Rachel 0000-0003-1762-2175 rclaunch@usgs.gov","orcid":"https://orcid.org/0000-0003-1762-2175","contributorId":182424,"corporation":false,"usgs":true,"family":"Claunch","given":"Rachel","email":"rclaunch@usgs.gov","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":703348,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Honeyfield, Dale C. 0000-0003-3034-2047 honeyfie@usgs.gov","orcid":"https://orcid.org/0000-0003-3034-2047","contributorId":2774,"corporation":false,"usgs":true,"family":"Honeyfield","given":"Dale","email":"honeyfie@usgs.gov","middleInitial":"C.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":true,"id":703349,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fitzsimons, John D.","contributorId":194168,"corporation":false,"usgs":false,"family":"Fitzsimons","given":"John","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":703350,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Brown, Scott B.","contributorId":175330,"corporation":false,"usgs":false,"family":"Brown","given":"Scott","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":703351,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":81235,"text":"fs20083040 - 2008 - Multi-Disciplinary Approach to Trace Contamination of Streams and Beaches","interactions":[],"lastModifiedDate":"2012-03-08T17:16:22","indexId":"fs20083040","displayToPublicDate":"2008-05-14T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2008-3040","title":"Multi-Disciplinary Approach to Trace Contamination of Streams and Beaches","docAbstract":"Concentrations of fecal-indicator bacteria in urban streams and ocean beaches in and around Santa Barbara occasionally can exceed public-health standards for recreation. The U.S. Geological Survey (USGS), working with the City of Santa Barbara, has used multi-disciplinary science to trace the sources of the bacteria. This research is helping local agencies take steps to improve recreational water quality.\r\n\r\nThe USGS used an approach that combined traditional hydrologic and microbiological data, with state-of-the-art genetic, molecular, and chemical tracer analysis. This research integrated physical data on streamflow, ground water, and near-shore oceanography, and made extensive use of modern geophysical and isotopic techniques. Using those techniques, the USGS was able to evaluate the movement of water and the exchange of ground water with near-shore ocean water.\r\n\r\nThe USGS has found that most fecal bacteria in the urban streams came from storm-drain discharges, with the highest concentrations occurring during storm flow. During low streamflow, the concentrations varied as much as three-fold, owing to variable contribution of non-point sources such as outdoor water use and urban runoff to streamflow. Fecal indicator bacteria along ocean beaches were from both stream discharge to the ocean and from non-point sources such as bird fecal material that accumulates in kelp and sand at the high-tide line. Low levels of human-specific Bacteroides, suggesting fecal material from a human source, were consistently detected on area beaches. One potential source, a local sewer line buried beneath the beach, was found not to be responsible for the fecal bacteria.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/fs20083040","usgsCitation":"Nickles, J., 2008, Multi-Disciplinary Approach to Trace Contamination of Streams and Beaches: U.S. Geological Survey Fact Sheet 2008-3040, 1 p., https://doi.org/10.3133/fs20083040.","productDescription":"1 p.","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":206,"text":"Cooperative Water Program","active":false,"usgs":true}],"links":[{"id":121179,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_2008_3040.jpg"},{"id":11278,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/2008/3040/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b4858","contributors":{"authors":[{"text":"Nickles, James","contributorId":35401,"corporation":false,"usgs":true,"family":"Nickles","given":"James","email":"","affiliations":[],"preferred":false,"id":294901,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":81157,"text":"ofr20081112 - 2008 - Calculation of the rate of M≥6.5 earthquakes for California and adjacent portions of Nevada and Mexico","interactions":[],"lastModifiedDate":"2021-09-10T11:38:47.767163","indexId":"ofr20081112","displayToPublicDate":"2008-05-04T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2008-1112","title":"Calculation of the rate of M≥6.5 earthquakes for California and adjacent portions of Nevada and Mexico","docAbstract":"One of the key issues in the development of an earthquake recurrence model for California and adjacent portions of Nevada and Mexico is the comparison of the predicted rates of earthquakes with the observed rates. Therefore, it is important to make an accurate determination of the observed rate of M>6.5 earthquakes in California and the adjacent region. We have developed a procedure to calculate observed earthquake rates from an earthquake catalog, accounting for magnitude uncertainty and magnitude rounding. We present a Bayesian method that corrects for the effect of the magnitude uncertainty in calculating the observed rates. Our recommended determination of the observed rate of M>6.5 in this region is 0.246 ± 0.085 (for two sigma) per year, although this rate is likely to be underestimated because of catalog incompleteness and this uncertainty estimate does not include all sources of uncertainty.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20081112","usgsCitation":"Frankel, A., and Mueller, C., 2008, Calculation of the rate of M≥6.5 earthquakes for California and adjacent portions of Nevada and Mexico (Version 1.0): U.S. Geological Survey Open-File Report 2008-1112, iii, 14 p., https://doi.org/10.3133/ofr20081112.","productDescription":"iii, 14 p.","onlineOnly":"Y","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":195685,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11187,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2008/1112/","linkFileType":{"id":5,"text":"html"}},{"id":389033,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_83548.htm"}],"country":"Mexico, United States","state":"California, Nevada","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -126,32 ], [ -126,42 ], [ -116,42 ], [ -116,32 ], [ -126,32 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a07e4b07f02db5f963b","contributors":{"authors":[{"text":"Frankel, Arthur","contributorId":103761,"corporation":false,"usgs":true,"family":"Frankel","given":"Arthur","affiliations":[],"preferred":false,"id":294521,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mueller, Charles","contributorId":57178,"corporation":false,"usgs":true,"family":"Mueller","given":"Charles","affiliations":[],"preferred":false,"id":294520,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70190546,"text":"70190546 - 2008 - Understanding and predicting ecological dynamics: Are major surprises inevitable","interactions":[],"lastModifiedDate":"2017-11-17T16:44:51","indexId":"70190546","displayToPublicDate":"2008-04-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Understanding and predicting ecological dynamics: Are major surprises inevitable","docAbstract":"Ecological surprises, substantial and unanticipated changes in the abundance of one or more species that result from previously unsuspected processes, are a common outcome of both experiments and observations in community and population ecology. Here, we give examples of such surprises along with the results of a survey of well-established field ecologists, most of whom have encountered one or more surprises over the course of their careers. Truly surprising results are common enough to require their consideration in any reasonable effort to characterize nature and manage natural resources. We classify surprises as dynamic-, pattern-, or intervention-based, and we speculate on the common processes that cause ecological systems to so often surprise us. A long-standing and still growing concern in the ecological literature is how best to make predictions of future population and community dynamics. Although most work on this subject involves statistical aspects of data analysis and modeling, the frequency and nature of ecological surprises imply that uncertainty cannot be easily tamed through improved analytical procedures, and that prudent management of both exploited and conserved communities will require precautionary and adaptive management approaches.
","language":"English","publisher":"Ecological Society of America","doi":"10.1890/07-0965.1","usgsCitation":"Doak, D.F., Estes, J.A., Halpern, B.S., Jacob, U., Lindberg, D.R., Lovvorn, J.R., Monson, D., Tinker, M.T., Williams, T.M., Wootton, J.T., Carroll, I., Emmerson, M., Micheli, F., and Novak, M., 2008, Understanding and predicting ecological dynamics: Are major surprises inevitable: Ecology, v. 89, no. 4, p. 952-961, https://doi.org/10.1890/07-0965.1.","productDescription":"10 p.","startPage":"952","endPage":"961","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":345520,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"89","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"59b10932e4b020cdf7d8d9d6","contributors":{"authors":[{"text":"Doak, Daniel F.","contributorId":46811,"corporation":false,"usgs":true,"family":"Doak","given":"Daniel","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":709710,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Estes, James A. jim_estes@usgs.gov","contributorId":53325,"corporation":false,"usgs":true,"family":"Estes","given":"James","email":"jim_estes@usgs.gov","middleInitial":"A.","affiliations":[{"id":6949,"text":"University of California, Santa Cruz","active":true,"usgs":false},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":false,"id":709711,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Halpern, Benjamin S.","contributorId":86649,"corporation":false,"usgs":true,"family":"Halpern","given":"Benjamin","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":709712,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jacob, Ute","contributorId":172063,"corporation":false,"usgs":false,"family":"Jacob","given":"Ute","email":"","affiliations":[{"id":26973,"text":"University of Hamburg","active":true,"usgs":false}],"preferred":false,"id":709713,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lindberg, D. R.","contributorId":64181,"corporation":false,"usgs":true,"family":"Lindberg","given":"D.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":709714,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lovvorn, James R.","contributorId":167714,"corporation":false,"usgs":false,"family":"Lovvorn","given":"James","email":"","middleInitial":"R.","affiliations":[{"id":13212,"text":"Southern Illinois University","active":true,"usgs":false}],"preferred":false,"id":709715,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Monson, Daniel H. 0000-0002-4593-5673 dmonson@usgs.gov","orcid":"https://orcid.org/0000-0002-4593-5673","contributorId":140480,"corporation":false,"usgs":true,"family":"Monson","given":"Daniel H.","email":"dmonson@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":false,"id":709716,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Tinker, M. Tim 0000-0002-3314-839X ttinker@usgs.gov","orcid":"https://orcid.org/0000-0002-3314-839X","contributorId":2796,"corporation":false,"usgs":true,"family":"Tinker","given":"M.","email":"ttinker@usgs.gov","middleInitial":"Tim","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":709717,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Williams, Terrie M.","contributorId":191735,"corporation":false,"usgs":false,"family":"Williams","given":"Terrie","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":709718,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Wootton, J. Timothy","contributorId":84283,"corporation":false,"usgs":true,"family":"Wootton","given":"J.","email":"","middleInitial":"Timothy","affiliations":[],"preferred":false,"id":709719,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Carroll, Ian","contributorId":196233,"corporation":false,"usgs":false,"family":"Carroll","given":"Ian","email":"","affiliations":[],"preferred":false,"id":709720,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Emmerson, Mark","contributorId":93404,"corporation":false,"usgs":true,"family":"Emmerson","given":"Mark","email":"","affiliations":[],"preferred":false,"id":709721,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Micheli, Fiorenza","contributorId":74315,"corporation":false,"usgs":true,"family":"Micheli","given":"Fiorenza","email":"","affiliations":[],"preferred":false,"id":709722,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Novak, Mark","contributorId":45229,"corporation":false,"usgs":false,"family":"Novak","given":"Mark","email":"","affiliations":[{"id":6680,"text":"Oregon State University","active":true,"usgs":false}],"preferred":false,"id":709723,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":70206344,"text":"70206344 - 2008 - Advancing process‐based watershed hydrological research using near‐surface geophysics: A vision for, and review of, electrical and magnetic geophysical methods","interactions":[],"lastModifiedDate":"2020-02-24T16:14:50","indexId":"70206344","displayToPublicDate":"2008-03-11T16:36:09","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Advancing process‐based watershed hydrological research using near‐surface geophysics: A vision for, and review of, electrical and magnetic geophysical methods","docAbstract":"We want to develop a dialogue between geophysicists and hydrologists interested in synergistically advancing process based watershed research. We identify recent advances in geophysical instrumentation, and provide a vision for the use of electrical and magnetic geophysical instrumentation in watershed scale hydrology. The focus of the paper is to identify instrumentation that could significantly advance this vision for geophysics and hydrology during the next 3–5 years. We acknowledge that this is one of a number of possible ways forward and seek only to offer a relatively narrow and achievable vision. The vision focuses on the measurement of geological structure and identification of flow paths using electrical and magnetic methods. The paper identifies instruments, provides examples of their use, and describes how synergy between measurement and modelling could be achieved. Of specific interest are the airborne systems that can cover large areas and are appropriate for watershed studies. Although airborne geophysics has been around for some time, only in the last few years have systems designed exclusively for hydrological applications begun to emerge. These systems, such as airborne electromagnetic (EM) and transient electromagnetic (TEM), could revolutionize hydrogeological interpretations. Our vision centers on developing nested and cross scale electrical and magnetic measurements that can be used to construct a three‐dimensional (3D) electrical or magnetic model of the subsurface in watersheds. The methodological framework assumes a ‘top down’ approach using airborne methods to identify the large scale, dominant architecture of the subsurface. We recognize that the integration of geophysical measurement methods, and data, into watershed process characterization and modelling can only be achieved through dialogue. Especially, through the development of partnerships between geophysicists and hydrologists, partnerships that explore how the application of geophysics can answer critical hydrological science questions, and conversely provide an understanding of the limitations of geophysical measurements and interpretation.
","language":"English","publisher":"Wiley","doi":"10.1002/hyp.6963","usgsCitation":"Robinson, D., Binley, A., Crook, N., Day-Lewis, F., Ferre, T.P., Grauch, V.J., Knight, R., Knoll, M., Lakshmi, V., Miller, R., Nyquist, J., Pellerin, L., Singha, K., and Slater, L., 2008, Advancing process‐based watershed hydrological research using near‐surface geophysics: A vision for, and review of, electrical and magnetic geophysical methods: Hydrological Processes, v. 22, no. 18, p. 3604-3635, https://doi.org/10.1002/hyp.6963.","productDescription":"32 p.","startPage":"3604","endPage":"3635","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"links":[{"id":368771,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"18","noUsgsAuthors":false,"publicationDate":"2008-03-11","publicationStatus":"PW","contributors":{"authors":[{"text":"Robinson, D.A.","contributorId":64895,"corporation":false,"usgs":true,"family":"Robinson","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":774229,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Binley, A.","contributorId":220130,"corporation":false,"usgs":false,"family":"Binley","given":"A.","email":"","affiliations":[],"preferred":false,"id":774230,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crook, N.","contributorId":222720,"corporation":false,"usgs":false,"family":"Crook","given":"N.","email":"","affiliations":[],"preferred":false,"id":783011,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Day-Lewis, F. D. 0000-0003-3526-886X","orcid":"https://orcid.org/0000-0003-3526-886X","contributorId":35773,"corporation":false,"usgs":true,"family":"Day-Lewis","given":"F. D.","affiliations":[],"preferred":false,"id":783012,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ferre, T. P. A","contributorId":206539,"corporation":false,"usgs":false,"family":"Ferre","given":"T.","email":"","middleInitial":"P. A","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":783013,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Grauch, V. J. S. 0000-0002-0761-3489 tien@usgs.gov","orcid":"https://orcid.org/0000-0002-0761-3489","contributorId":886,"corporation":false,"usgs":true,"family":"Grauch","given":"V.","email":"tien@usgs.gov","middleInitial":"J. S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":783014,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Knight, R.","contributorId":22717,"corporation":false,"usgs":true,"family":"Knight","given":"R.","affiliations":[],"preferred":false,"id":783015,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Knoll, M.","contributorId":222722,"corporation":false,"usgs":false,"family":"Knoll","given":"M.","email":"","affiliations":[],"preferred":false,"id":783016,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Lakshmi, V.","contributorId":58071,"corporation":false,"usgs":true,"family":"Lakshmi","given":"V.","email":"","affiliations":[],"preferred":false,"id":783017,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Miller, R.","contributorId":19118,"corporation":false,"usgs":true,"family":"Miller","given":"R.","affiliations":[],"preferred":false,"id":783018,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Nyquist, J.","contributorId":222723,"corporation":false,"usgs":false,"family":"Nyquist","given":"J.","email":"","affiliations":[],"preferred":false,"id":783019,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Pellerin, L.","contributorId":94073,"corporation":false,"usgs":true,"family":"Pellerin","given":"L.","email":"","affiliations":[],"preferred":false,"id":783020,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Singha, K.","contributorId":201025,"corporation":false,"usgs":false,"family":"Singha","given":"K.","email":"","affiliations":[],"preferred":false,"id":783021,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Slater, L.","contributorId":99267,"corporation":false,"usgs":true,"family":"Slater","given":"L.","email":"","affiliations":[],"preferred":false,"id":783022,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":70193774,"text":"70193774 - 2008 - Implications of rate-limited mass transfer for aquifer storage and recovery","interactions":[],"lastModifiedDate":"2019-10-21T11:41:43","indexId":"70193774","displayToPublicDate":"2008-03-06T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3825,"text":"Groundwater","active":true,"publicationSubtype":{"id":10}},"title":"Implications of rate-limited mass transfer for aquifer storage and recovery","docAbstract":"Pressure to decrease reliance on surface water storage has led to increased interest in aquifer storage and recovery (ASR) systems. Recovery efficiency, which is the ratio of the volume of recovered water that meets a predefined standard to total volume of injected fluid, is a common criterion of ASR viability. Recovery efficiency can be degraded by a number of physical and geochemical processes, including rate-limited mass transfer (RLMT), which describes the exchange of solutes between mobile and immobile pore fluids. RLMT may control transport behavior that cannot be explained by advection and dispersion. We present data from a pilot-scale ASR study in Charleston, South Carolina, and develop a three-dimensional finite-difference model to evaluate the impact of RLMT processes on ASR efficiency. The modeling shows that RLMT can explain a rebound in salinity during fresh water storage in a brackish aquifer. Multicycle model results show low efficiencies over one to three ASR cycles due to RLMT degrading water quality during storage; efficiencies can evolve and improve markedly, however, over multiple cycles, even exceeding efficiencies generated by advection-dispersion only models. For an idealized ASR model where RLMT is active, our simulations show a discrete range of diffusive length scales over which the viability of ASR schemes in brackish aquifers would be hindered.
","language":"English","publisher":"John Wiley & Sons, Inc.","doi":"10.1111/j.1745-6584.2008.00435.x","usgsCitation":"Culkin, S.L., Singha, K., and Day-Lewis, F.D., 2008, Implications of rate-limited mass transfer for aquifer storage and recovery: Groundwater, v. 46, no. 4, p. 591-605, https://doi.org/10.1111/j.1745-6584.2008.00435.x.","productDescription":"15 p.","startPage":"591","endPage":"605","ipdsId":"IP-003165","costCenters":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"links":[{"id":476617,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1745-6584.2008.00435.x","text":"Publisher Index Page"},{"id":348495,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"4","publishingServiceCenter":{"id":11,"text":"Pembroke PSC"},"noUsgsAuthors":false,"publicationDate":"2008-07-04","publicationStatus":"PW","scienceBaseUri":"5a0425f3e4b0dc0b45b4570a","contributors":{"authors":[{"text":"Culkin, Sean L.","contributorId":199913,"corporation":false,"usgs":false,"family":"Culkin","given":"Sean","email":"","middleInitial":"L.","affiliations":[{"id":13035,"text":"Department of Geosciences, Pennsylvania State University","active":true,"usgs":false}],"preferred":false,"id":720348,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Singha, Kamini ","contributorId":199833,"corporation":false,"usgs":false,"family":"Singha","given":"Kamini ","affiliations":[{"id":13035,"text":"Department of Geosciences, Pennsylvania State University","active":true,"usgs":false}],"preferred":false,"id":720347,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Day-Lewis, Frederick D. 0000-0003-3526-886X daylewis@usgs.gov","orcid":"https://orcid.org/0000-0003-3526-886X","contributorId":1672,"corporation":false,"usgs":true,"family":"Day-Lewis","given":"Frederick","email":"daylewis@usgs.gov","middleInitial":"D.","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":721387,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70236413,"text":"70236413 - 2008 - Magmatic and tectonic evolution of the Caetano caldera, north-central Nevada: A tilted, mid-Tertiary eruptive center and source of the Caetano Tuff","interactions":[],"lastModifiedDate":"2022-09-14T15:44:12.880181","indexId":"70236413","displayToPublicDate":"2008-02-01T10:47:13","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1820,"text":"Geosphere","active":true,"publicationSubtype":{"id":10}},"title":"Magmatic and tectonic evolution of the Caetano caldera, north-central Nevada: A tilted, mid-Tertiary eruptive center and source of the Caetano Tuff","docAbstract":"The Caetano Tuff is a late Eocene, rhyolite ash-flow tuff that crops out within an ∼90-km-long, east-west–trending belt in north-central Nevada, previously interpreted as an elongate graben or “volcano-tectonic trough.” New field, petrographic, geochemical, and geochronologic data show that: (1) the east half of the “trough” is actually the Caetano caldera, formed by eruption of the Caetano Tuff at 33.8 Ma and later structurally dismembered during Miocene extension; (2) the west half of the trough includes both the distinctly younger and unrelated Fish Creek Mountains caldera (ca. 24.7 Ma) and a west-trending paleovalley partly filled with outflow Caetano Tuff; and (3) the Caetano Tuff as previously defined actually consists of three distinct units, two units of the 33.8 Ma Caetano Tuff and an older (34.2 Ma) tuff, exposed north of the Caetano caldera, herein named the tuff of Cove Mine.
Miocene extensional faulting and tilting has exposed the Caetano caldera over a paleodepth range of >5 km, from the caldera floor through post-caldera sedimentary rocks, providing exceptional constraints on an evolutionary model of the caldera that are rarely available for other calderas. The Caetano caldera filled with more than 4 km of intracaldera Caetano Tuff, while outflow tuff flowed west and south of the caldera, primarily down Eocene paleovalleys. Caldera fill consists of two units of Caetano Tuff. The lower compound cooling unit is as much as 3600 m thick and is separated by a complete cooling break from a 500–1000-m-thick upper unit that consists of multiple, thin, ash flows interbedded with sedimentary deposits. Multiple granite porphyries, including the 25-km2 Carico Lake pluton, intruded and domed the center of the caldera within 0.1 Ma of caldera formation; one of these porphyries is associated with pervasive argillic and advanced argillic alteration of the western half of the caldera. All exposed caldera-related rocks are rhyolites or granites (71–77.5 wt% SiO2). Caldera collapse was significantly greater than the thickness of caldera fill and created a topographic depression that served as a depocenter until at least 25 Ma, filling with nearly 1 km of sediments and distally derived, ash-flow tuffs.
The caldera is presently exposed in a series of 40–50°, east-tilted blocks bounded by north-striking, west-dipping normal faults that formed after 16 Ma. Slip on these faults accommodated ∼100% E-W extension, making the restored Caetano caldera ∼20 km east-west by 10–18 km north-south. The estimated volume of intracaldera Caetano Tuff is, therefore, ∼840 km3, and the minimum estimated total eruptive volume is ∼1100 km3. Although the Caetano magmatic system was probably too young to supply heat for nearby Carlin-type gold deposits in the Cortez district, earlier nearby magmatic activity may have contributed to formation of these deposits. Reconstruction of the late Eocene, pre-Caetano caldera geologic setting, immediately prior to caldera formation, indicates that the Cortez Hills and Horse Canyon Carlin-type deposits formed at ≤1 km depths.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/GES00116.1","usgsCitation":"John, D.A., Henry, C., and Colgan, J.P., 2008, Magmatic and tectonic evolution of the Caetano caldera, north-central Nevada: A tilted, mid-Tertiary eruptive center and source of the Caetano Tuff: Geosphere, v. 4, no. 1, p. 75-106, https://doi.org/10.1130/GES00116.1.","productDescription":"32 p.","startPage":"75","endPage":"106","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":476620,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/ges00116.1","text":"Publisher Index Page"},{"id":406237,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Caetano caldera","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -118,\n 39.75\n ],\n [\n -116,\n 39.75\n ],\n [\n -116,\n 40.75\n ],\n [\n -118,\n 40.75\n ],\n [\n -118,\n 39.75\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"4","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"John, David A. 0000-0001-7977-9106 djohn@usgs.gov","orcid":"https://orcid.org/0000-0001-7977-9106","contributorId":1748,"corporation":false,"usgs":true,"family":"John","given":"David","email":"djohn@usgs.gov","middleInitial":"A.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":850929,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Henry, Christopher D.","contributorId":36556,"corporation":false,"usgs":true,"family":"Henry","given":"Christopher D.","affiliations":[],"preferred":false,"id":850930,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Colgan, Joseph P. 0000-0001-6671-1436 jcolgan@usgs.gov","orcid":"https://orcid.org/0000-0001-6671-1436","contributorId":1649,"corporation":false,"usgs":true,"family":"Colgan","given":"Joseph","email":"jcolgan@usgs.gov","middleInitial":"P.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":850931,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70162452,"text":"70162452 - 2008 - Environmental presence and persistence of pharmaceuticals: An overview","interactions":[],"lastModifiedDate":"2018-09-05T07:14:51","indexId":"70162452","displayToPublicDate":"2008-01-01T13:45:00","publicationYear":"2008","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Environmental presence and persistence of pharmaceuticals: An overview","docAbstract":"Emerging contaminants (ECs) in the environment – that is, chemicals with domestic, municipal, industrial, or agricultural sources that are not commonly monitored but may have the potential for adverse environmental effects – is a rapidly growing field of research. The use of “emerging” is not intended to infer that the presence of these compounds in the environment is new. These chemicals have been released into the environment as long as they have been in production or, in the case of hormones and other endogenous compounds, since the rise of animal life. What is emerging is the interest by the scientific and lay communities in the presence of these chemicals in the environment, the analytical capabilities required for detection, and the subtle effects that very small concentrations of these chemicals appear to have on aquatic biota. In December 2006, Environmental Science & Technology devoted an entire special issue (volume 40, number 23) to the topic of ECs, illustrating the increased interest in the subject. Within the EGs, one particular class that has seen a substantial increase in research over the past 10 years is pharmaceuticals and personal-care products (PPCPs). This increased research interest can be demonstrated by several means, including requests for proposals from funding agencies, but the clearest indication of a focused effort to understand the introduction, transformation, and potential health and environmental effects of PPCPs and ECs, in general, is the number of published reports. This increase can be shown by examining six environmental journals that regularly publish PPCP-related papers – Chemosphere, Environmental Science & Technology, Environmental Toxicology and Chemistry, Science of the Total Environment, Water Research, and Water Science and Technology. In 1998 there were 22 papers published on pharmaceuticals, antibiotics, or drugs in these 6 journals; by 2006, this number increased sixfold to 132 papers (Figure 1.1).
This growth can be attributed to a number of factors. The presence of pharmaceuticals in surface-water samples from Europe and the United States was documented in several sentinel papers. These ground-breaking works encouraged other scientists to examine the rivers, streams, lakes, and reservoirs in their regions for such chemicals. In addition, the intense public attention paid to news reports on the environmental detections of these chemicals and possible effects of aquatic life has made this issue visible to the wastewater-treatment, drinking-water treatment, and regulatory communities. This has driven the funding bodies associated with these communities to fund studies or request proposals that address the presence, fate, and effects of PPCPs in aquatic systems. The release of the first comprehensive reconnaissance of pharmaceuticals and other wastewater contaminants in the United States provides an example of the intense media interest in this topic. Within 6 days on online publication of this study, 72 newspapers across the United States had published articles describing the results, either locally written or based on international media syndicate reports. There also was substantial concurrent coverage by local and national radio and television outlets, including the Cable News Network, ABC World News Tonight, and National Public Radio. A substantial fraction of these news stories may be attributable to press releases and media briefings prior to publication. However, the interest by television and print journalists in reporting the results of a peer-reviewed journal article to the general public was motivated by the recognition that describing the presence of PPCPs in water supplies would be of interest to the public. To better convey the results of the study published by Koplin et al. to the public, a separate general-interest fact sheet was published to summarize the important points of the study. Because PPCPs are commonly and widely used by individuals, there is likely a preexisting, personal identification with these compounds that does not occur for the wide range of other organic and inorganic contaminants whose presence in the environment has previously been described. This greater public “name recognition” makes itself known through the media to the regulatory and technical community and has prompted interest in sponsoring research that defines the composition and concentrations of PPCPs in potential sources and their fate and effects following relase into the environment.
Independent of the drivers that potentially fuel the interest in studies of PPCPs, it is clear that PPCP research has grown beyond surface-water studies to examine issues such as:
• Presence in other matrices, such as groundwater, landfill leachates, sediments, and biosolids.
• Environmental transport and fate in surface water, groundwater, and soils amended with reclaimed water or biosolids.
• PPCP source elucidation, such as wastewater treatment plant (WWTP) effluents, confined animal feeding operations (CAFOs), and aquaculture.
• Removal during wastewater and drinking-water treatment.
• Effects on aquatic ecosystems, terrestrial ecosystems, and human health.
The chapters in this book provide an extensive examination of current environmental pharmaceutical research and are divided into three sections: “Occurrence and Analysis of Pharmaceuticals in the Environment,” “Environment Fate and Transformations of Veterinary Pharmaceuticals,” and “treatment of Pharmaceuticals in Drinking Water and Wastewater.” The purpose of this introductory overview chapter is to outline current (2004-2006) knowledge about the presence and concentration of PPCPs as described in the published literature. Previous reviews should be consulted for discussions on pre-2004 publications. Those reviews will provide the reader with a comprehensive introduction to the topic of PPCPs in the environment. This chapter describes the sources of PPCPs and other organic contaminants often associated with human wastewater into the environment, the range of concentrations present in various environmental compartments, and the potential routes of removal/sequestration. An overview of the sources and fate of veterinary pharmaceuticals will be discussed in Chapter 5, “Fate and Transport of Veterinary Medicines in the Soil Environment.”
Healthy riparian ecosystems in arid and semi-arid regions exhibit shifting patterns of vegetation in response to periodic flooding. Their conditions also depend upon the amount of grazing and other human uses. Taking advantage of these system properties, we developed and tested an approach that utilizes historical Landsat data to track changes in the patterns of greenness (Normalized Difference Vegetation Index) within riparian zones. We tested the approach in the Upper San Pedro River of southeastern Arizona of the US, an unimpounded river system that flows north into the US from northern Mexico. We evaluated changes in the pattern of greenness in the San Pedro River National Conservation Area (SPRNCA), an area protected from grazing and development since 1988, and in a relatively unprotected area north of the SPRNCA (NA). The SPRNCA exhibited greater positive changes in greenness than did the NA. The SPRNCA also exhibited larger, more continuous patches of positive change than did the NA. These pattern differences may reflect greater pressures from grazing and urban sprawl in the NA than in the SPRNCA, as well as differences in floodplain width, depth to ground water, and base geology. The SPRNCA has greater amounts of ground and surface water available to support a riparian gallery forest than does the NA, and this may have influenced changes during the study period.
Estimates of the direction of greenness change (positive or negative) from satellite imagery were similar to estimates derived from aerial photography, except in areas where changes were from one type of shrub community to another, and in areas with agriculture. Change estimates in these areas may be more difficult because of relatively low greenness values, and because of differences in soil moisture, sun-angle, and crop rotations among the dates of data collection. The potential for applying a satellite-based, greenness change approach to evaluate riparian ecosystem condition over broad geographic areas is also discussed.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.ecolind.2007.01.001","usgsCitation":"Jones, K.B., Edmonds, C.M., Slonecker, E.T., Wickham, J., Neale, A., Wade, T., Riitters, K.H., and Kepner, W., 2008, Detecting changes in riparian habitat conditions based on patterns of greenness change: A case study from the Upper San Pedro River Basin, USA: Ecological Indicators, v. 8, no. 1, p. 89-99, https://doi.org/10.1016/j.ecolind.2007.01.001.","productDescription":"11 p.","startPage":"89","endPage":"99","costCenters":[{"id":242,"text":"Eastern Geographic Science Center","active":true,"usgs":true}],"links":[{"id":365378,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","otherGeospatial":"Upper San Pedro River Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -110.59,\n 31.335\n ],\n [\n -110.59,\n 31.8\n ],\n [\n -109.86328125,\n 31.8\n ],\n [\n -109.86328125,\n 31.335\n ],\n [\n -110.59,\n 31.335\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"8","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Jones, K. Bruce","contributorId":66105,"corporation":false,"usgs":true,"family":"Jones","given":"K.","email":"","middleInitial":"Bruce","affiliations":[],"preferred":false,"id":765729,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edmonds, Curtis M.","contributorId":206574,"corporation":false,"usgs":false,"family":"Edmonds","given":"Curtis","email":"","middleInitial":"M.","affiliations":[{"id":6914,"text":"U.S. Environmental Protection Agency","active":true,"usgs":false}],"preferred":false,"id":765730,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Slonecker, E. Terrence 0000-0002-5793-0503 tslonecker@usgs.gov","orcid":"https://orcid.org/0000-0002-5793-0503","contributorId":168591,"corporation":false,"usgs":true,"family":"Slonecker","given":"E.","email":"tslonecker@usgs.gov","middleInitial":"Terrence","affiliations":[{"id":36171,"text":"National Civil Applications Center","active":true,"usgs":true},{"id":242,"text":"Eastern Geographic Science Center","active":true,"usgs":true}],"preferred":true,"id":765731,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wickham, James","contributorId":140259,"corporation":false,"usgs":false,"family":"Wickham","given":"James","affiliations":[{"id":12657,"text":"EPA NEIC","active":true,"usgs":false}],"preferred":false,"id":765732,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Neale, Anne","contributorId":43275,"corporation":false,"usgs":true,"family":"Neale","given":"Anne","email":"","affiliations":[],"preferred":false,"id":765733,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wade, Timothy G.","contributorId":48845,"corporation":false,"usgs":true,"family":"Wade","given":"Timothy G.","affiliations":[],"preferred":false,"id":765734,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Riitters, Kurt H. 0000-0003-3901-4453","orcid":"https://orcid.org/0000-0003-3901-4453","contributorId":139788,"corporation":false,"usgs":false,"family":"Riitters","given":"Kurt","email":"","middleInitial":"H.","affiliations":[{"id":36400,"text":"US Forest Service","active":true,"usgs":false}],"preferred":false,"id":765735,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Kepner, William","contributorId":9214,"corporation":false,"usgs":true,"family":"Kepner","given":"William","affiliations":[],"preferred":false,"id":765736,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70047404,"text":"pp175024 - 2008 - Hazard information management during the autumn 2004 reawakening of Mount St. Helens volcano, Washington","interactions":[],"lastModifiedDate":"2019-06-03T08:42:58","indexId":"pp175024","displayToPublicDate":"2008-01-01T10:26:00","publicationYear":"2008","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1750-24","displayTitle":"Hazard information management during the autumn 2004 reawakening of Mount St. Helens volcano, Washington: Chapter 24 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006","title":"Hazard information management during the autumn 2004 reawakening of Mount St. Helens volcano, Washington","docAbstract":"The 2004 reawakening of Mount St. Helens quickly \ncaught the attention of government agencies as well as the \ninternational news media and the public. Immediate concerns \nfocused on a repeat of the catastrophic landslide and blast \nevent of May 18, 1980, which remains a vivid memory for \nmany individuals. Within several days of the onset of accelerating seismicity, media inquiries increased exponentially. \nPersonnel at the U.S. Geological Survey, the Pacific Northwest \nSeismic Network, and the Gifford Pinchot National Forest \nsoon handled hundreds of press inquiries and held several \npress briefings per day. About one week into the event, a \nJoint Information Center was established to help maintain a \nconsistent hazard message and to provide a centralized information source about volcanic activity, hazards, area closures, \nand media briefings. Scientists, public-affairs specialists, and \npersonnel from emergency-management, health, public-safety, \nand land-management agencies answered phones, helped in \npress briefings and interviews, and managed media access to \ncolleagues working on science and safety issues. For scientists, in addition to managing the cycle of daily fieldwork, \nchallenges included (1) balancing accurate interpretations of \ndata under crisis conditions with the need to share information quickly, (2) articulating uncertainties for a variety of volcanic \nscenarios, (3) minimizing scientific jargon, and (4) frequently \nupdating and effectively distributing talking points. Success \nof hazard information management during a volcanic crisis \ndepends largely on scientists’ clarity of communication and \nthorough preplanning among interagency partners. All parties \nmust commit to after-action evaluation and improvement of \ncommunication plans, incorporating lessons learned during \neach event.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006 (Professional Paper 1750)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/pp175024","collaboration":"This report is Chapter 24 in A volcano rekindled: the renewed eruption of Mount St. Helens, 2004-2006. For more information, see: Professional Paper 1750","usgsCitation":"Driedger, C.L., Neal, C., Knappenberger, T.H., Needham, D.H., Harper, R., and Steele, W.P., 2008, Hazard information management during the autumn 2004 reawakening of Mount St. Helens volcano, Washington: U.S. Geological Survey Professional Paper 1750-24, 15 p., https://doi.org/10.3133/pp175024.","productDescription":"15 p.","startPage":"505","endPage":"519","numberOfPages":"15","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":276007,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/pp175024.png"},{"id":276003,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/1750/"},{"id":276004,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/1750/chapters/pp2008-1750_chapter24.pdf"}],"country":"United States","state":"Washington","otherGeospatial":"Mount St. Helens","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -122.238678,46.161175 ], [ -122.238678,46.233792 ], [ -122.131489,46.233792 ], [ -122.131489,46.161175 ], [ -122.238678,46.161175 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5200c963e4b009d47a4c238a","contributors":{"editors":[{"text":"Sherrod, David R. 0000-0001-9460-0434 dsherrod@usgs.gov","orcid":"https://orcid.org/0000-0001-9460-0434","contributorId":527,"corporation":false,"usgs":true,"family":"Sherrod","given":"David","email":"dsherrod@usgs.gov","middleInitial":"R.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":509509,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Scott, William E. 0000-0001-8156-979X wescott@usgs.gov","orcid":"https://orcid.org/0000-0001-8156-979X","contributorId":1725,"corporation":false,"usgs":true,"family":"Scott","given":"William","email":"wescott@usgs.gov","middleInitial":"E.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":509511,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Stauffer, Peter H. pstauffe@usgs.gov","contributorId":1219,"corporation":false,"usgs":true,"family":"Stauffer","given":"Peter","email":"pstauffe@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":true,"id":509510,"contributorType":{"id":2,"text":"Editors"},"rank":3}],"authors":[{"text":"Driedger, Carolyn L. 0000-0002-4011-4112 driedger@usgs.gov","orcid":"https://orcid.org/0000-0002-4011-4112","contributorId":537,"corporation":false,"usgs":true,"family":"Driedger","given":"Carolyn","email":"driedger@usgs.gov","middleInitial":"L.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":481953,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Neal, Christina A. 0000-0002-7697-7825","orcid":"https://orcid.org/0000-0002-7697-7825","contributorId":82660,"corporation":false,"usgs":true,"family":"Neal","given":"Christina A.","affiliations":[],"preferred":false,"id":481957,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Knappenberger, Tom H.","contributorId":33209,"corporation":false,"usgs":true,"family":"Knappenberger","given":"Tom","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":481955,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Needham, Deborah H.","contributorId":12357,"corporation":false,"usgs":true,"family":"Needham","given":"Deborah","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":481954,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Harper, Robert B.","contributorId":42515,"corporation":false,"usgs":true,"family":"Harper","given":"Robert B.","affiliations":[],"preferred":false,"id":481956,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Steele, William P.","contributorId":92952,"corporation":false,"usgs":true,"family":"Steele","given":"William","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":481958,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70030546,"text":"70030546 - 2008 - Probabilistic seismic hazard in the San Francisco Bay area based on a simplified viscoelastic cycle model of fault interactions","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70030546","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Probabilistic seismic hazard in the San Francisco Bay area based on a simplified viscoelastic cycle model of fault interactions","docAbstract":"We construct a viscoelastic cycle model of plate boundary deformation that includes the effect of time-dependent interseismic strain accumulation, coseismic strain release, and viscoelastic relaxation of the substrate beneath the seismogenic crust. For a given fault system, time-averaged stress changes at any point (not on a fault) are constrained to zero; that is, kinematic consistency is enforced for the fault system. The dates of last rupture, mean recurrence times, and the slip distributions of the (assumed) repeating ruptures are key inputs into the viscoelastic cycle model. This simple formulation allows construction of stress evolution at all points in the plate boundary zone for purposes of probabilistic seismic hazard analysis (PSHA). Stress evolution is combined with a Coulomb failure stress threshold at representative points on the fault segments to estimate the times of their respective future ruptures. In our PSHA we consider uncertainties in a four-dimensional parameter space: the rupture peridocities, slip distributions, time of last earthquake (for prehistoric ruptures) and Coulomb failure stress thresholds. We apply this methodology to the San Francisco Bay region using a recently determined fault chronology of area faults. Assuming single-segment rupture scenarios, we find that fature rupture probabilities of area faults in the coming decades are the highest for the southern Hayward, Rodgers Creek, and northern Calaveras faults. This conclusion is qualitatively similar to that of Working Group on California Earthquake Probabilities, but the probabilities derived here are significantly higher. Given that fault rupture probabilities are highly model-dependent, no single model should be used to assess to time-dependent rupture probabilities. We suggest that several models, including the present one, be used in a comprehensive PSHA methodology, as was done by Working Group on California Earthquake Probabilities.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research B: Solid Earth","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2007JB005227","issn":"01480","usgsCitation":"Pollitz, F., and Schwartz, D.P., 2008, Probabilistic seismic hazard in the San Francisco Bay area based on a simplified viscoelastic cycle model of fault interactions: Journal of Geophysical Research B: Solid Earth, v. 113, no. 5, https://doi.org/10.1029/2007JB005227.","costCenters":[],"links":[{"id":476717,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007jb005227","text":"Publisher Index Page"},{"id":239595,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212156,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007JB005227"}],"volume":"113","issue":"5","noUsgsAuthors":false,"publicationDate":"2008-05-24","publicationStatus":"PW","scienceBaseUri":"505a8c9de4b0c8380cd7e7b6","contributors":{"authors":[{"text":"Pollitz, F. F.","contributorId":108280,"corporation":false,"usgs":true,"family":"Pollitz","given":"F. F.","affiliations":[],"preferred":false,"id":427598,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schwartz, David P. 0000-0001-5193-9200","orcid":"https://orcid.org/0000-0001-5193-9200","contributorId":52968,"corporation":false,"usgs":true,"family":"Schwartz","given":"David","middleInitial":"P.","affiliations":[],"preferred":false,"id":427597,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70031895,"text":"70031895 - 2008 - Composition and quality of coals in the Huaibei Coalfield, Anhui, China","interactions":[],"lastModifiedDate":"2012-03-12T17:21:26","indexId":"70031895","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2302,"text":"Journal of Geochemical Exploration","active":true,"publicationSubtype":{"id":10}},"title":"Composition and quality of coals in the Huaibei Coalfield, Anhui, China","docAbstract":"The Huaibei Coalfield, Anhui Province, China, is one of the largest coalfields in China. The coals of Permian age are used mainly for power generation. Coal compositions and 47 trace elements of the No. 10 Coal of the Shanxi Formation, the No. 7, 5, and 4 Coals of the Lower Shihezi Formation, and the No. 3 Coal of the Upper Shihezi Formation from the Huaibei Coalfield were studied. The results indicate that the Huaibei coals have low ash, moisture, and sulfur contents, but high volatile matter and calorific value. The ash yield increases stratigraphically upwards, but the volatile matter and total sulfur contents show a slight decrease from the lower to upper seams. Magmatic intrusion into the No. 5 Coal resulted in high ash, volatile matter, and calorific value, but low moisture value in the coal. Among the studied 47 trace elements, Ba, Co, Cr, Cu, Hg, Mo, Ni, Pb, Sb, Th, U, V, and Zn are of environmental concerns. Four elements Hg, Mo, Zn, and Sb are clearly enriched in the coals as compared with the upper continental crust. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geochemical Exploration","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.gexplo.2007.11.002","issn":"03756742","usgsCitation":"Zheng, L., Liu, G., Wang, L., and Chou, C.L., 2008, Composition and quality of coals in the Huaibei Coalfield, Anhui, China: Journal of Geochemical Exploration, v. 97, no. 2-3, p. 59-68, https://doi.org/10.1016/j.gexplo.2007.11.002.","startPage":"59","endPage":"68","numberOfPages":"10","costCenters":[],"links":[{"id":214868,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.gexplo.2007.11.002"},{"id":242624,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"2-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f921e4b0c8380cd4d453","contributors":{"authors":[{"text":"Zheng, Lingyun","contributorId":68495,"corporation":false,"usgs":true,"family":"Zheng","given":"Lingyun","email":"","affiliations":[],"preferred":false,"id":433627,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liu, Gaisheng","contributorId":15158,"corporation":false,"usgs":true,"family":"Liu","given":"Gaisheng","email":"","affiliations":[],"preferred":false,"id":433625,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wang, L.","contributorId":76904,"corporation":false,"usgs":true,"family":"Wang","given":"L.","email":"","affiliations":[],"preferred":false,"id":433628,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chou, C. L.","contributorId":32655,"corporation":false,"usgs":false,"family":"Chou","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":433626,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031851,"text":"70031851 - 2008 - Non-spore forming eubacteria isolated at an altitude of 20,000 m in Earth's atmosphere: extended incubation periods needed for culture-based assays","interactions":[],"lastModifiedDate":"2014-08-27T09:35:44","indexId":"70031851","displayToPublicDate":"2008-01-01T00:00:00","publicationYear":"2008","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":667,"text":"Aerobiologia","active":true,"publicationSubtype":{"id":10}},"title":"Non-spore forming eubacteria isolated at an altitude of 20,000 m in Earth's atmosphere: extended incubation periods needed for culture-based assays","docAbstract":"On 13 August 2004, an atmospheric sample was collected at an altitude of 20,000 m along a west to east transect over the continental United States by NASA’s Stratospheric and Cosmic Dust Program. This sample was then shipped to the US Geological Survey’s Global Desert Dust program for microbiological analyses. This sample, which was plated on a low nutrient agar to determine if cultivable microorganisms were present, produced 590 small yellow to off-white colonies after approximately 7 weeks of incubation at room-temperature. Of 50 colonies selected for identification using 16S rRNA sequencing, 41 belonged to the family Micrococcaceae, seven to the family Microbacteriaceae, one to the genus Staphylococcus, and one to the genus Brevibacterium. All of the isolates identified were non-spore-forming pigmented bacteria, and their presence in this sample illustrate that it is not unusual to recover viable microbes at extreme altitudes. Additionally, the extended period required to initiate growth demonstrates the need for lengthy incubation periods when analyzing high-altitude samples for cultivable microorganisms.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Aerobiologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer","doi":"10.1007/s10453-007-9078-7","issn":"03935965","usgsCitation":"Griffin, D.W., 2008, Non-spore forming eubacteria isolated at an altitude of 20,000 m in Earth's atmosphere: extended incubation periods needed for culture-based assays: Aerobiologia, v. 24, no. 1, p. 19-25, https://doi.org/10.1007/s10453-007-9078-7.","productDescription":"7 p.","startPage":"19","endPage":"25","numberOfPages":"7","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":214770,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10453-007-9078-7"},{"id":242520,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-11-07","publicationStatus":"PW","scienceBaseUri":"505a6766e4b0c8380cd732ef","contributors":{"authors":[{"text":"Griffin, Dale W. 0000-0003-1719-5812 dgriffin@usgs.gov","orcid":"https://orcid.org/0000-0003-1719-5812","contributorId":2178,"corporation":false,"usgs":true,"family":"Griffin","given":"Dale","email":"dgriffin@usgs.gov","middleInitial":"W.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":433441,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}