Over the last century, land use and land cover (LULC) in the United States Corn Belt region shifted from mixed perennial and annual cropping systems to primarily annual crops. Historical LULC change impacted the annual water balance in many Midwestern basins by decreasing annual evapotranspiration (ET) and increasing streamflow and base flow. Recent expansion of the biofuel industry may lead to future LULC changes from increasing corn acreage and potential conversion of the industry to cellulosic bioenergy crops of warm or cool season grasses. In this paper, the Soil and Water Assessment Tool (SWAT) model was used to evaluate potential impacts from future LULC change on the annual and seasonal water balance of the Raccoon River watershed in west‐central Iowa. Three primary scenarios for LULC change and three scenario variants were evaluated, including an expansion of corn acreage in the watershed and two scenarios involving expansion of land using warm season and cool season grasses for ethanol biofuel. Modeling results were consistent with historical observations. Increased corn production will decrease annual ET and increase water yield and losses of nitrate, phosphorus, and sediment, whereas increasing perennialization will increase ET and decrease water yield and loss of nonpoint source pollutants. However, widespread tile drainage that exists today may limit the extent to which a mixed perennial‐annual land cover would ever resemble pre‐1940s hydrologic conditions. Study results indicate that future LULC change will affect the water balance of the watershed, with consequences largely dependent on the future LULC trajectory.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2007WR006644","usgsCitation":"Schilling, K.E., Jha, M.K., Zhang, Y., Gassman, P.W., and Wolter, C.F., 2009, Impact of land use and land cover change on the water balance of a large agricultural watershed: Historical effects and future directions: Water Resources Research, v. 45, no. 7, Article W00A09; 12 p., https://doi.org/10.1029/2007WR006644.","productDescription":"Article W00A09; 12 p.","costCenters":[],"links":[{"id":476161,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007wr006644","text":"Publisher Index Page"},{"id":245589,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"7","noUsgsAuthors":false,"publicationDate":"2008-11-19","publicationStatus":"PW","scienceBaseUri":"505a38bfe4b0c8380cd61699","contributors":{"authors":[{"text":"Schilling, Keith E.","contributorId":106429,"corporation":false,"usgs":false,"family":"Schilling","given":"Keith","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":458303,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jha, Manoj K.","contributorId":198896,"corporation":false,"usgs":false,"family":"Jha","given":"Manoj","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":458302,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zhang, You-Kuan","contributorId":203735,"corporation":false,"usgs":false,"family":"Zhang","given":"You-Kuan","email":"","affiliations":[],"preferred":false,"id":458301,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gassman, Philip W.","contributorId":33952,"corporation":false,"usgs":false,"family":"Gassman","given":"Philip","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":458300,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wolter, Calvin F.","contributorId":198897,"corporation":false,"usgs":false,"family":"Wolter","given":"Calvin","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":458299,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70036880,"text":"70036880 - 2009 - Influence of flow variability on floodplain formation and destruction, Little Missouri River, North Dakota","interactions":[],"lastModifiedDate":"2012-03-12T17:21:59","indexId":"70036880","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Influence of flow variability on floodplain formation and destruction, Little Missouri River, North Dakota","docAbstract":"Resolving observations of channel change into separate planimetric measurements of floodplain formation and destruction reveals distinct relations between these processes and the flow regime. We analyzed a time sequence of eight bottomland images from 1939 to 2003 along the Little Missouri River, North Dakota, to relate geomorphic floodplain change to flow along this largely unregulated river. At the decadal scale, floodplain formation and destruction varied independently. Destruction was strongly positively correlated with the magnitude of infrequent high flows that recur every 5-10 yr, whereas floodplain formation was negatively correlated with the magnitude of frequent low flows exceeded 80% of the time. At the century scale, however, a climatically induced decrease in peak flows has reduced the destruction rate, limiting the area made available for floodplain formation. The rate of destruction was not uniform across the floodplain. Younger surfaces were consistently destroyed at a higher rate than older surfaces, suggesting that throughput of contaminants would have occurred more rapidly than predicted by models that assume uniform residence time of sediment across the floodplain. Maps of floodplain ages produced by analysis of sequential floodplain images are similar to maps of forest ages produced through dendrochronology, confirming the assumption of dendrogeomorphic studies that riparian tree establishment in this system is limited to recent channel locations. ?? 2009 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society of America Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/B26355.1","issn":"00167606","usgsCitation":"Miller, J., and Friedman, J.M., 2009, Influence of flow variability on floodplain formation and destruction, Little Missouri River, North Dakota: Geological Society of America Bulletin, v. 121, no. 5-6, p. 752-759, https://doi.org/10.1130/B26355.1.","startPage":"752","endPage":"759","numberOfPages":"8","costCenters":[],"links":[{"id":245498,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217545,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/B26355.1"}],"volume":"121","issue":"5-6","noUsgsAuthors":false,"publicationDate":"2009-04-27","publicationStatus":"PW","scienceBaseUri":"505a3b36e4b0c8380cd62313","contributors":{"authors":[{"text":"Miller, J.R.","contributorId":86555,"corporation":false,"usgs":true,"family":"Miller","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":458273,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Friedman, Jonathan M. 0000-0002-1329-0663","orcid":"https://orcid.org/0000-0002-1329-0663","contributorId":44495,"corporation":false,"usgs":true,"family":"Friedman","given":"Jonathan","middleInitial":"M.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":458272,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036878,"text":"70036878 - 2009 - Structured decision making as a conceptual framework to identify thresholds for conservation and management","interactions":[],"lastModifiedDate":"2012-03-12T17:22:00","indexId":"70036878","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","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":"Structured decision making as a conceptual framework to identify thresholds for conservation and management","docAbstract":"Thresholds and their relevance to conservation have become a major topic of discussion in the ecological literature. Unfortunately, in many cases the lack of a clear conceptual framework for thinking about thresholds may have led to confusion in attempts to apply the concept of thresholds to conservation decisions. Here, we advocate a framework for thinking about thresholds in terms of a structured decision making process. The purpose of this framework is to promote a logical and transparent process for making informed decisions for conservation. Specification of such a framework leads naturally to consideration of definitions and roles of different kinds of thresholds in the process. We distinguish among three categories of thresholds. Ecological thresholds are values of system state variables at which small changes bring about substantial changes in system dynamics. Utility thresholds are components of management objectives (determined by human values) and are values of state or performance variables at which small changes yield substantial changes in the value of the management outcome. Decision thresholds are values of system state variables at which small changes prompt changes in management actions in order to reach specified management objectives. The approach that we present focuses directly on the objectives of management, with an aim to providing decisions that are optimal with respect to those objectives. This approach clearly distinguishes the components of the decision process that are inherently subjective (management objectives, potential management actions) from those that are more objective (system models, estimates of system state). Optimization based on these components then leads to decision matrices specifying optimal actions to be taken at various values of system state variables. Values of state variables separating different actions in such matrices are viewed as decision thresholds. Utility thresholds are included in the objectives component, and ecological thresholds may be embedded in models projecting consequences of management actions. Decision thresholds are determined by the above-listed components of a structured decision process. These components may themselves vary over time, inducing variation in the decision thresholds inherited from them. These dynamic decision thresholds can then be determined using adaptive management. We provide numerical examples (that are based on patch occupancy models) of structured decision processes that include all three kinds of thresholds. ?? 2009 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/08-0255.1","issn":"10510761","usgsCitation":"Martin, J., Runge, M., Nichols, J., Lubow, B., and Kendall, W., 2009, Structured decision making as a conceptual framework to identify thresholds for conservation and management: Ecological Applications, v. 19, no. 5, p. 1079-1090, https://doi.org/10.1890/08-0255.1.","startPage":"1079","endPage":"1090","numberOfPages":"12","costCenters":[],"links":[{"id":217517,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/08-0255.1"},{"id":245469,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"19","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9c7be4b08c986b31d409","contributors":{"authors":[{"text":"Martin, J.","contributorId":18871,"corporation":false,"usgs":true,"family":"Martin","given":"J.","affiliations":[],"preferred":false,"id":458262,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Runge, M.C. 0000-0002-8081-536X","orcid":"https://orcid.org/0000-0002-8081-536X","contributorId":49312,"corporation":false,"usgs":true,"family":"Runge","given":"M.C.","affiliations":[],"preferred":false,"id":458264,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nichols, J.D. 0000-0002-7631-2890","orcid":"https://orcid.org/0000-0002-7631-2890","contributorId":14332,"corporation":false,"usgs":true,"family":"Nichols","given":"J.D.","affiliations":[],"preferred":false,"id":458261,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lubow, B. C.","contributorId":64603,"corporation":false,"usgs":false,"family":"Lubow","given":"B. C.","affiliations":[],"preferred":false,"id":458265,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kendall, W. L. 0000-0003-0084-9891","orcid":"https://orcid.org/0000-0003-0084-9891","contributorId":32880,"corporation":false,"usgs":true,"family":"Kendall","given":"W. L.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":458263,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70037418,"text":"70037418 - 2009 - Evaluating wildlife response to coastal dune habitat restoration in san francisco, california","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037418","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1462,"text":"Ecological Restoration","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating wildlife response to coastal dune habitat restoration in san francisco, california","docAbstract":"The vast dune system that once dominated the entire western half of the San Francisco peninsula in California has been reduced to a few fragments that conserve locally threatened plant and animal species. We measured the effects of ongoing restoration efforts on wildlife abundance and diversity on one of the largest of these fragments, Fort Funston in the Golden Gate National Recreation Area. Efforts included removal of non-native species, active restoration of native dune vegetation, and restricted visitor use. We collected data regarding the composition and abundance of vegetation, birds, and ground-dwelling vertebrates on four treatments including an actively restored area with restricted visitor use, an unrestored area where visitor use had been restricted for ten years, an unrestored area where visitor use had been restricted for two years, and an unrestored area with unrestricted visitor use. Results indicated that the diversity and abundance of wildlife species, as well as the richness and cover of native plant species, were greater in the restored area than in all other sampled areas. Restricted visitor use alone had only modest positive effects on the abundance and diversity of wildlife and the richness and cover of native plant species.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Restoration","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.3368/er.27.4.439","issn":"15434079","usgsCitation":"Russell, W., Shulzitski, J., and Setty, A., 2009, Evaluating wildlife response to coastal dune habitat restoration in san francisco, california: Ecological Restoration, v. 27, no. 4, p. 439-448, https://doi.org/10.3368/er.27.4.439.","startPage":"439","endPage":"448","numberOfPages":"10","costCenters":[],"links":[{"id":245165,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217237,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3368/er.27.4.439"}],"volume":"27","issue":"4","noUsgsAuthors":false,"publicationDate":"2009-11-09","publicationStatus":"PW","scienceBaseUri":"505a0c05e4b0c8380cd529d3","contributors":{"authors":[{"text":"Russell, W.","contributorId":87785,"corporation":false,"usgs":true,"family":"Russell","given":"W.","email":"","affiliations":[],"preferred":false,"id":460964,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shulzitski, J.","contributorId":76578,"corporation":false,"usgs":true,"family":"Shulzitski","given":"J.","email":"","affiliations":[],"preferred":false,"id":460963,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Setty, A.","contributorId":72620,"corporation":false,"usgs":true,"family":"Setty","given":"A.","email":"","affiliations":[],"preferred":false,"id":460962,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70032562,"text":"70032562 - 2009 - Timing and petroleum sources for the Lower Cretaceous Mannville Group oil sands of northern Alberta based on 4-D modeling","interactions":[],"lastModifiedDate":"2012-03-12T17:21:22","indexId":"70032562","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Timing and petroleum sources for the Lower Cretaceous Mannville Group oil sands of northern Alberta based on 4-D modeling","docAbstract":"The Lower Cretaceous Mannville Group oil sands of northern Alberta have an estimated 270.3 billion m3 (BCM) (1700 billion bbl) of in-place heavy oil and tar. Our study area includes oil sand accumulations and downdip areas that partially extend into the deformation zone in western Alberta. The oil sands are composed of highly biodegraded oil and tar, collectively referred to as bitumen, whose source remains controversial. This is addressed in our study with a four-dimensional (4-D) petroleum system model. The modeled primary trap for generated and migrated oil is subtle structures. A probable seal for the oil sands was a gradual updip removal of the lighter hydrocarbon fractions as migrated oil was progressively biodegraded. This is hypothetical because the modeling software did not include seals resulting from the biodegradation of oil. Although the 4-D model shows that source rocks ranging from the Devonian-Mississippian Exshaw Formation to the Lower Cretaceous Mannville Group coals and Ostracode-zone-contributed oil to Mannville Group reservoirs, source rocks in the Jurassic Fernie Group (Gordondale Member and Poker Chip A shale) were the initial and major contributors. Kinetics associated with the type IIS kerogen in Fernie Group source rocks resulted in the early generation and expulsion of oil, as early as 85 Ma and prior to the generation from the type II kerogen of deeper and older source rocks. The modeled 50% peak transformation to oil was reached about 75 Ma for the Gordondale Member and Poker Chip A shale near the west margin of the study area, and prior to onset about 65 Ma from other source rocks. This early petroleum generation from the Fernie Group source rocks resulted in large volumes of generated oil, and prior to the Laramide uplift and onset of erosion (???58 Ma), which curtailed oil generation from all source rocks. Oil generation from all source rocks ended by 40 Ma. Although the modeled study area did not include possible western contributions of generated oil to the oil sands, the amount generated by the Jurassic source rocks within the study area was 475 BCM (2990 billion bbl). Copyright ?? 2009. The American Association of Petroleum Geologists. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Association of Petroleum Geologists Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1306/09150808060","issn":"01491","usgsCitation":"Higley, D., Lewan, M.D., Roberts, L.N., and Henry, M., 2009, Timing and petroleum sources for the Lower Cretaceous Mannville Group oil sands of northern Alberta based on 4-D modeling: American Association of Petroleum Geologists Bulletin, v. 93, no. 2, p. 203-230, https://doi.org/10.1306/09150808060.","startPage":"203","endPage":"230","numberOfPages":"28","costCenters":[],"links":[{"id":213889,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1306/09150808060"},{"id":241557,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"93","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb3e9e4b08c986b326061","contributors":{"authors":[{"text":"Higley, D.K. 0000-0001-8024-9954","orcid":"https://orcid.org/0000-0001-8024-9954","contributorId":90261,"corporation":false,"usgs":true,"family":"Higley","given":"D.K.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":436823,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lewan, M. D.","contributorId":46540,"corporation":false,"usgs":true,"family":"Lewan","given":"M.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":436821,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Roberts, L. N. R.","contributorId":53419,"corporation":false,"usgs":true,"family":"Roberts","given":"L.","email":"","middleInitial":"N. R.","affiliations":[],"preferred":false,"id":436822,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Henry, M.","contributorId":19766,"corporation":false,"usgs":true,"family":"Henry","given":"M.","affiliations":[],"preferred":false,"id":436820,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70034554,"text":"70034554 - 2009 - Troublesome toxins: Time to re-think plant-herbivore interactions in vertebrate ecology","interactions":[],"lastModifiedDate":"2012-03-12T17:21:43","indexId":"70034554","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":954,"text":"BMC Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Troublesome toxins: Time to re-think plant-herbivore interactions in vertebrate ecology","docAbstract":"Earlier models of plant-herbivore interactions relied on forms of functional response that related rates of ingestion by herbivores to mechanical or physical attributes such as bite size and rate. These models fail to predict a growing number of findings that implicate chemical toxins as important determinants of plant-herbivore dynamics. Specifically, considerable evidence suggests that toxins set upper limits on food intake for many species of herbivorous vertebrates. Herbivores feeding on toxin-containing plants must avoid saturating their detoxification systems, which often occurs before ingestion rates are limited by mechanical handling of food items. In light of the importance of plant toxins, a new approach is needed to link herbivores to their food base. We discuss necessary features of such an approach, note recent advances in herbivore functional response models that incorporate effects of plant toxins, and mention predictions that are consistent with observations in natural systems. Future ecological studies will need to address explicitly the importance of plant toxins in shaping plant and herbivore communities.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"BMC Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1186/1472-6785-9-5","issn":"14726785","usgsCitation":"Swihart, R., DeAngelis, D., Feng, Z., and Bryant, L.C., 2009, Troublesome toxins: Time to re-think plant-herbivore interactions in vertebrate ecology: BMC Ecology, v. 9, https://doi.org/10.1186/1472-6785-9-5.","costCenters":[],"links":[{"id":476343,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1186/1472-6785-9-5","text":"Publisher Index Page"},{"id":215945,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1186/1472-6785-9-5"},{"id":243782,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb898e4b08c986b327959","contributors":{"authors":[{"text":"Swihart, R.K.","contributorId":90560,"corporation":false,"usgs":true,"family":"Swihart","given":"R.K.","email":"","affiliations":[],"preferred":false,"id":446364,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"DeAngelis, D.L. 0000-0002-1570-4057","orcid":"https://orcid.org/0000-0002-1570-4057","contributorId":32470,"corporation":false,"usgs":true,"family":"DeAngelis","given":"D.L.","affiliations":[],"preferred":false,"id":446361,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Feng, Z.","contributorId":84991,"corporation":false,"usgs":true,"family":"Feng","given":"Z.","email":"","affiliations":[],"preferred":false,"id":446363,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bryant, Lee C.","contributorId":62045,"corporation":false,"usgs":false,"family":"Bryant","given":"Lee","email":"","middleInitial":"C.","affiliations":[{"id":12698,"text":"Northern Arizona University","active":true,"usgs":false}],"preferred":true,"id":446362,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70036557,"text":"70036557 - 2009 - Effects of variation in streamflow and channel structure on smallmouth bass habitat in an alluvial stream","interactions":[],"lastModifiedDate":"2012-03-12T17:22:01","indexId":"70036557","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3301,"text":"River Research and Applications","active":true,"publicationSubtype":{"id":10}},"title":"Effects of variation in streamflow and channel structure on smallmouth bass habitat in an alluvial stream","docAbstract":"We evaluated the effects of streamflow-related changes in channel shape and morphology on the quality, quantity, availability and spatial distribution of young-of-year and adult smallmouth bass Micropterus dolomieu habitat in an alluvial stream, the Baron Fork of the Illinois River, Oklahoma. We developed Habitat Suitability Criteria (HSC) for young-of-year and adult smallmouth bass to assess changes in available smallmouth bass habitat between years, and compare predicted smallmouth bass Weighted Usable Area (WUA) with observed WUA measured the following year. Following flood events between 1999 and 2000, including a record flood, changes in transect cross-sectional area ranged from 62.5% to 93.5% and channel mesohabitat overlap ranged from 29.5% to 67.0% in study three study reaches. Using Physical HABitat SIMulation (PHABSIM) system analysis, we found that both young-of-year and adult smallmouth bass habitat were differentially affected by intra- and inter-annual streamflow fluctuations. Maximum WUA for young-of-year and adults occurred at streamflows of 1.8 and 2.3m3 s-1, respectively, and WUA declined sharply for both groups at lower streamflows. For most microhabitat variables, habitat availability was similar between years. Habitat suitability criteria developed in 1999 corresponded well with observed fish locations in 2000 for adult smallmouth bass but not for young-of-year fish. Our findings suggest that annual variation in habitat availability affects the predictive ability of habitat models for young-of-year smallmouth bass more than for adult smallmouth bass. Furthermore, our results showed that despite the dynamic nature of the gravel-dominated, alluvial Baron Fork, HSC for smallmouth bass were consistent and transferable between years.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"River Research and Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/rra.1178","issn":"15351459","usgsCitation":"Jason, R.W., and Fisher, W., 2009, Effects of variation in streamflow and channel structure on smallmouth bass habitat in an alluvial stream: River Research and Applications, v. 25, no. 6, p. 661-674, https://doi.org/10.1002/rra.1178.","startPage":"661","endPage":"674","numberOfPages":"14","costCenters":[],"links":[{"id":217782,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/rra.1178"},{"id":245750,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"6","noUsgsAuthors":false,"publicationDate":"2008-06-18","publicationStatus":"PW","scienceBaseUri":"505a082fe4b0c8380cd519f0","contributors":{"authors":[{"text":"Jason, Remshardt W.","contributorId":96930,"corporation":false,"usgs":true,"family":"Jason","given":"Remshardt","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":456733,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fisher, W.L.","contributorId":87713,"corporation":false,"usgs":true,"family":"Fisher","given":"W.L.","email":"","affiliations":[],"preferred":false,"id":456732,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036863,"text":"70036863 - 2009 - Dynamics of national forests assessed using the Landsat record: Case studies in eastern United States","interactions":[],"lastModifiedDate":"2017-04-03T16:04:15","indexId":"70036863","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3254,"text":"Remote Sensing of Environment","printIssn":"0034-4257","active":true,"publicationSubtype":{"id":10}},"title":"Dynamics of national forests assessed using the Landsat record: Case studies in eastern United States","docAbstract":"The national forests (NFs) in the United States are protected areas managed for multiple purposes, and therefore are subject to both natural and anthropogenic disturbances. Monitoring forest changes arising from such disturbances and the post-disturbance recovery processes is essential for assessing the conditions of the NFs and the effectiveness of management approaches. In this study, we used time series stacks of Landsat images (LTSS) to evaluate the dynamics of seven NFs in eastern United States, including the De Soto NF, the Talladega NF, the Francis Marion NF, and the Uwharrie NF in southeastern U.S., and the Chequamegon NF, the Hiawatha NF, and the Superior NF in northern U.S. Each LTSS consisted of 12–14 Landsat images acquired for the same location, spanning from 1984 to 2006 with a nominal interval of one image every 2 years. Each LTSS was analyzed using a vegetation change tracker (VCT) algorithm to map forest disturbance. Accuracy assessments of the derived disturbance maps revealed that they had overall accuracy values of about 80%, with most of the disturbance classes having user's accuracies ranging from 70% to 95%. The producer's accuracies were generally lower, with the majority being in the range between 50% and 70%. While this may suggest that the disturbance maps could slightly underestimate disturbances, a more detailed assessment of the omission errors revealed that the majority of the disagreements were due to minor disturbances like thinning or storm damages that were identified by the image analysts but were not captured by the VCT algorithm.
The derived disturbance year maps revealed that while each of the seven NFs consisted of 90% or more forest land, significant portions of the forests were disturbed since 1984. Mapped disturbances accounted for about 30%–45% of total land area in the four NFs in southeastern U.S. and about 10%–20% in the three NFs in northern U.S. The disturbance rates were generally higher in the buffer zones surrounding each NF, and varied considerably over time. The time series approach employed in this study represents a new approach for monitoring forest resources using the Landsat or similar satellite data records. The disturbance products derived using this approach were spatially explicit and contained much more temporal details than conventional bi-temporal change products, and likely will be found more useful by many users including ecologists and resources managers. The high disturbance rates found in the southeastern U.S. suggest that this region may have a more significant role in modulating the atmospheric carbon budget than currently recognized.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.rse.2008.06.016","issn":"00344257","usgsCitation":"Huang, C., Goward, S., Schleeweis, K., Thomas, N., Masek, J.G., and Zhu, Z., 2009, Dynamics of national forests assessed using the Landsat record: Case studies in eastern United States: Remote Sensing of Environment, v. 113, no. 7, p. 1430-1442, https://doi.org/10.1016/j.rse.2008.06.016.","productDescription":"13 p.","startPage":"1430","endPage":"1442","numberOfPages":"13","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":245679,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217718,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2008.06.016"}],"volume":"113","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0434e4b0c8380cd50855","contributors":{"authors":[{"text":"Huang, C.","contributorId":65255,"corporation":false,"usgs":true,"family":"Huang","given":"C.","email":"","affiliations":[],"preferred":false,"id":458182,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goward, S.N.","contributorId":94514,"corporation":false,"usgs":true,"family":"Goward","given":"S.N.","affiliations":[],"preferred":false,"id":458184,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schleeweis, K.","contributorId":10258,"corporation":false,"usgs":true,"family":"Schleeweis","given":"K.","affiliations":[],"preferred":false,"id":458180,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Thomas, N.","contributorId":72490,"corporation":false,"usgs":true,"family":"Thomas","given":"N.","email":"","affiliations":[],"preferred":false,"id":458183,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Masek, J. G.","contributorId":105883,"corporation":false,"usgs":true,"family":"Masek","given":"J.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":458185,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zhu, Z.","contributorId":10898,"corporation":false,"usgs":true,"family":"Zhu","given":"Z.","email":"","affiliations":[],"preferred":false,"id":458181,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70037404,"text":"70037404 - 2009 - Landslide movement in southwest Colorado triggered by atmospheric tides","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037404","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2845,"text":"Nature Geoscience","active":true,"publicationSubtype":{"id":10}},"title":"Landslide movement in southwest Colorado triggered by atmospheric tides","docAbstract":"Landslides are among the most hazardous of geological processes, causing thousands of casualties and damage on the order of billions of dollars annually. The movement of most landslides occurs along a discrete shear surface, and is triggered by a reduction in the frictional strength of the surface. Infiltration of water into the landslide from rainfall and snowmelt and ground motion from earthquakes are generally implicated in lowering the frictional strength of this surface. However, solid-Earth and ocean tides have recently been shown to trigger shear sliding in other processes, such as earthquakes and glacial motion. Here we use observations and numerical modelling to show that a similar processatmospheric tidescan trigger movement in an ongoing landslide. The Slumgullion landslide, located in the SanJuan Mountains of Colorado, shows daily movement, primarily during diurnal low tides of the atmosphere. According to our model, the tidal changes in air pressure cause air and water in the sediment pores to flow vertically, altering the frictional stress of the shear surface; upward fluid flow during periods of atmospheric low pressure is most conducive to sliding. We suggest that tidally modulated changes in shear strength may also affect the stability of other landslides, and that the rapid pressure variations associated with some fast-moving storm systems could trigger a similar response. ?? 2009 Macmillan Publishers Limited. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nature Geoscience","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1038/ngeo659","issn":"17520894","usgsCitation":"Schulz, W., Kean, J., and Wang, G., 2009, Landslide movement in southwest Colorado triggered by atmospheric tides: Nature Geoscience, v. 2, no. 12, p. 863-866, https://doi.org/10.1038/ngeo659.","startPage":"863","endPage":"866","numberOfPages":"4","costCenters":[],"links":[{"id":217153,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1038/ngeo659"},{"id":245074,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"12","noUsgsAuthors":false,"publicationDate":"2009-11-01","publicationStatus":"PW","scienceBaseUri":"505a4430e4b0c8380cd66924","contributors":{"authors":[{"text":"Schulz, W.H.","contributorId":61225,"corporation":false,"usgs":true,"family":"Schulz","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":460907,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kean, J. W. 0000-0003-3089-0369","orcid":"https://orcid.org/0000-0003-3089-0369","contributorId":71679,"corporation":false,"usgs":true,"family":"Kean","given":"J. W.","affiliations":[],"preferred":false,"id":460908,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wang, G.","contributorId":11034,"corporation":false,"usgs":true,"family":"Wang","given":"G.","email":"","affiliations":[],"preferred":false,"id":460906,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036862,"text":"70036862 - 2009 - THEMIS high-resolution digital terrain: Topographic and thermophysical mapping of Gusev Crater, Mars","interactions":[],"lastModifiedDate":"2012-03-12T17:21:59","indexId":"70036862","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2317,"text":"Journal of Geophysical Research E: Planets","active":true,"publicationSubtype":{"id":10}},"title":"THEMIS high-resolution digital terrain: Topographic and thermophysical mapping of Gusev Crater, Mars","docAbstract":"We discuss a new technique to generate high-resolution digital terrain models (DTMs) and to quantitatively derive and map slope-corrected thermophysical properties such as albedo, thermal inertia, and surface temperatures. This investigation is a continuation of work started by Kirk et al. (2005), who empirically deconvolved Thermal Emission Imaging System (THEMIS) visible and thermal infrared data of this area, isolating topographic information that produced an accurate DTM. Surface temperatures change as a function of many variables such as slope, albedo, thermal inertia, time, season, and atmospheric opacity. We constrain each of these variables to construct a DTM and maps of slope-corrected albedo, slope- and albedo-corrected thermal inertia, and surface temperatures across the scene for any time of day or year and at any atmospheric opacity. DTMs greatly facilitate analyses of the Martian surface, and the MOLA global data set is not finely scaled enough (128 pixels per degree, ???0.5 km per pixel near the equator) to be combined with newer data sets (e.g., High Resolution Imaging Science Experiment, Context Camera, and Compact Reconnaissance Imaging Spectrometer for Mars at ???0.25, ???6, and ???20 m per pixel, respectively), so new techniques to derive high-resolution DTMs are always being explored. This paper discusses our technique of combining a set of THEMIS visible and thermal infrared observations such that albedo and thermal inertia variations within the scene are eliminated and only topographic variations remain. This enables us to produce a high-resolution DTM via photoclinometry techniques that are largely free of albedo-induced errors. With this DTM, THEMIS observations, and a subsurface thermal diffusion model, we generate slope-corrected maps of albedo, thermal inertia, and surface temperatures. In addition to greater accuracy, these products allow thermophysical properties to be directly compared with topography.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2008JE003292","issn":"01480227","usgsCitation":"Cushing, G., Titus, T., Soderblom, L., and Kirk, R.L., 2009, THEMIS high-resolution digital terrain: Topographic and thermophysical mapping of Gusev Crater, Mars: Journal of Geophysical Research E: Planets, v. 114, no. 7, https://doi.org/10.1029/2008JE003292.","costCenters":[],"links":[{"id":217687,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2008JE003292"},{"id":245647,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"114","issue":"7","noUsgsAuthors":false,"publicationDate":"2009-07-15","publicationStatus":"PW","scienceBaseUri":"505ba383e4b08c986b31fd2c","contributors":{"authors":[{"text":"Cushing, G.E.","contributorId":56778,"corporation":false,"usgs":true,"family":"Cushing","given":"G.E.","email":"","affiliations":[],"preferred":false,"id":458177,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Titus, T.N.","contributorId":102615,"corporation":false,"usgs":true,"family":"Titus","given":"T.N.","email":"","affiliations":[],"preferred":false,"id":458179,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Soderblom, L.A. 0000-0002-0917-853X","orcid":"https://orcid.org/0000-0002-0917-853X","contributorId":6139,"corporation":false,"usgs":true,"family":"Soderblom","given":"L.A.","affiliations":[],"preferred":false,"id":458176,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kirk, R. L.","contributorId":94698,"corporation":false,"usgs":true,"family":"Kirk","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":458178,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70036860,"text":"70036860 - 2009 - Co-seismic ruptures of the 12 May 2008, Ms 8.0 Wenchuan earthquake, Sichuan: East-west crustal shortening on oblique, parallel thrusts along the eastern edge of Tibet","interactions":[],"lastModifiedDate":"2012-03-12T17:21:59","indexId":"70036860","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"title":"Co-seismic ruptures of the 12 May 2008, Ms 8.0 Wenchuan earthquake, Sichuan: East-west crustal shortening on oblique, parallel thrusts along the eastern edge of Tibet","docAbstract":"The Ms 8.0, Wenchuan earthquake, which devastated the mountainous western rim of the Sichuan basin in central China, produced a surface rupture over 200??km-long with oblique thrust/dextral slip and maximum scarp heights of ~ 10??m. It thus ranks as one of the world's largest continental mega-thrust events in the last 150??yrs. Field investigation shows clear surface breaks along two of the main branches of the NE-trending Longmen Shan thrust fault system. The principal rupture, on the NW-dipping Beichuan fault, displays nearly equal amounts of thrust and right-lateral slip. Basin-ward of this rupture, another continuous surface break is observed for over 70??km on the parallel, more shallowly NW-dipping Pengguan fault. Slip on this latter fault was pure thrusting, with a maximum scarp height of ~ 3.5??m. This is one of the very few reported instances of crustal-scale co-seismic slip partitioning on parallel thrusts. This out-of-sequence event, with distributed surface breaks on crustal mega-thrusts, highlights regional, ~ EW-directed, present day crustal shortening oblique to the Longmen Shan margin of Tibet. The long rupture and large offsets with strong horizontal shortening that characterize the Wenchuan earthquake herald a re-evaluation of tectonic models anticipating little or no active shortening of the upper crust along this edge of the plateau, and require a re-assessment of seismic hazard along potentially under-rated active faults across the densely populated western Sichuan basin and mountains. ?? 2009 Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth and Planetary Science Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.epsl.2009.07.017","issn":"0012821X","usgsCitation":"Liu-Zeng, J., Zhang, Z., Wen, L., Tapponnier, P., Sun, J., Xing, X., Hu, G., Xu, Q., Zeng, L., Ding, L., Ji, C., Hudnut, K., and van der Woerd, J., 2009, Co-seismic ruptures of the 12 May 2008, Ms 8.0 Wenchuan earthquake, Sichuan: East-west crustal shortening on oblique, parallel thrusts along the eastern edge of Tibet: Earth and Planetary Science Letters, v. 286, no. 3-4, p. 355-370, https://doi.org/10.1016/j.epsl.2009.07.017.","startPage":"355","endPage":"370","numberOfPages":"16","costCenters":[],"links":[{"id":476250,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.1016/j.epsl.2009.07.017","text":"External Repository"},{"id":245617,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217660,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.epsl.2009.07.017"}],"volume":"286","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f67be4b0c8380cd4c7be","contributors":{"authors":[{"text":"Liu-Zeng, J.","contributorId":87397,"corporation":false,"usgs":true,"family":"Liu-Zeng","given":"J.","email":"","affiliations":[],"preferred":false,"id":458167,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zhang, Z.","contributorId":47505,"corporation":false,"usgs":true,"family":"Zhang","given":"Z.","email":"","affiliations":[],"preferred":false,"id":458163,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wen, L.","contributorId":90142,"corporation":false,"usgs":true,"family":"Wen","given":"L.","email":"","affiliations":[],"preferred":false,"id":458168,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tapponnier, P.","contributorId":47616,"corporation":false,"usgs":true,"family":"Tapponnier","given":"P.","email":"","affiliations":[],"preferred":false,"id":458164,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sun, Jielun","contributorId":33443,"corporation":false,"usgs":true,"family":"Sun","given":"Jielun","email":"","affiliations":[],"preferred":false,"id":458161,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Xing, X.","contributorId":8704,"corporation":false,"usgs":true,"family":"Xing","given":"X.","email":"","affiliations":[],"preferred":false,"id":458157,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hu, G.","contributorId":42465,"corporation":false,"usgs":true,"family":"Hu","given":"G.","email":"","affiliations":[],"preferred":false,"id":458162,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Xu, Q.","contributorId":92084,"corporation":false,"usgs":true,"family":"Xu","given":"Q.","email":"","affiliations":[],"preferred":false,"id":458169,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Zeng, L.","contributorId":56483,"corporation":false,"usgs":true,"family":"Zeng","given":"L.","email":"","affiliations":[],"preferred":false,"id":458165,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Ding, L.","contributorId":61674,"corporation":false,"usgs":true,"family":"Ding","given":"L.","email":"","affiliations":[],"preferred":false,"id":458166,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Ji, C.","contributorId":31093,"corporation":false,"usgs":true,"family":"Ji","given":"C.","email":"","affiliations":[],"preferred":false,"id":458160,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Hudnut, K.W.","contributorId":25179,"corporation":false,"usgs":true,"family":"Hudnut","given":"K.W.","email":"","affiliations":[],"preferred":false,"id":458159,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"van der Woerd, J.","contributorId":25017,"corporation":false,"usgs":true,"family":"van der Woerd","given":"J.","email":"","affiliations":[],"preferred":false,"id":458158,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}} ,{"id":70036629,"text":"70036629 - 2009 - Assessment of lake sensitivity to acidic deposition in national parks of the Rocky Mountains","interactions":[],"lastModifiedDate":"2012-12-25T14:19:24","indexId":"70036629","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","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":"Assessment of lake sensitivity to acidic deposition in national parks of the Rocky Mountains","docAbstract":"The sensitivity of high-elevation lakes to acidic deposition was evaluated in five national parks of the Rocky Mountains based on statistical relations between lake acid-neutralizing capacity concentrations and basin characteristics. Acid-neutralizing capacity (ANC) of 151 lakes sampled during synoptic surveys and basin-characteristic information derived from geographic information system (GIS) data sets were used to calibrate the statistical models. The explanatory basin variables that were considered included topographic parameters, bedrock type, and vegetation type. A logistic regression model was developed, and modeling results were cross-validated through lake sampling during fall 2004 at 58 lakes. The model was applied to lake basins greater than 1 ha in area in Glacier National Park (n = 244 lakes), Grand Teton National Park (n = 106 lakes), Great Sand Dunes National Park and Preserve (n = 11 lakes), Rocky Mountain National Park (n = 114 lakes), and Yellowstone National Park (n = 294 lakes). Lakes that had a high probability of having an ANC concentration <100 μeq/L, and therefore sensitive to acidic deposition, are located in basins with elevations >3000 m, with <30% of the catchment having northeast aspect and with >80% of the catchment bedrock having low buffering capacity. The modeling results indicate that the most sensitive lakes are located in Rocky Mountain National Park and Grand Teton National Park. This technique for evaluating the lake sensitivity to acidic deposition is useful for designing long-term monitoring plans and is potentially transferable to other remote mountain areas of the United States and the world.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Ecological Society of America","publisherLocation":"Ithaca, NY","doi":"10.1890/07-1091.1","issn":"10510761","usgsCitation":"Nanus, L., Williams, M., Campbell, K., Tonnessen, K., Blett, T., and Clow, D.W., 2009, Assessment of lake sensitivity to acidic deposition in national parks of the Rocky Mountains: Ecological Applications, v. 19, no. 4, p. 961-973, https://doi.org/10.1890/07-1091.1.","productDescription":"13 p.","startPage":"961","endPage":"973","costCenters":[{"id":639,"text":"Water Resources of the United States","active":false,"usgs":true}],"links":[{"id":476299,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1890/07-1091.1","text":"Publisher Index Page"},{"id":217845,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/07-1091.1"},{"id":245817,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado;Idaho;Montana;Wyoming","otherGeospatial":"Glacier National Park;Grand Teton National Park;Great Sand Dunes National Park And Preserve;Rocky Mountain National Park;Yellowstone National Park","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -114.48,37.66 ], [ -114.48,49.0 ], [ -105.43,49.0 ], [ -105.43,37.66 ], [ -114.48,37.66 ] ] ] } } ] }","volume":"19","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ee3ce4b0c8380cd49c3f","contributors":{"authors":[{"text":"Nanus, L.","contributorId":83239,"corporation":false,"usgs":true,"family":"Nanus","given":"L.","affiliations":[],"preferred":false,"id":457068,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Williams, M.W.","contributorId":15565,"corporation":false,"usgs":true,"family":"Williams","given":"M.W.","email":"","affiliations":[],"preferred":false,"id":457063,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Campbell, K.","contributorId":63351,"corporation":false,"usgs":false,"family":"Campbell","given":"K.","affiliations":[{"id":47665,"text":"St. Anthony Falls Laboratory, University of Minnesota, Minneapolis, MN, USA","active":true,"usgs":false}],"preferred":false,"id":457066,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tonnessen, K.A.","contributorId":30196,"corporation":false,"usgs":true,"family":"Tonnessen","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":457065,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Blett, T.","contributorId":67828,"corporation":false,"usgs":true,"family":"Blett","given":"T.","email":"","affiliations":[],"preferred":false,"id":457067,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Clow, D. W.","contributorId":23531,"corporation":false,"usgs":true,"family":"Clow","given":"D.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":457064,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70036859,"text":"70036859 - 2009 - Comparison of alternative representations of hydraulic-conductivity anisotropy in folded fractured-sedimentary rock: Modeling groundwater flow in the Shenandoah Valley (USA)","interactions":[],"lastModifiedDate":"2018-10-12T10:22:32","indexId":"70036859","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of alternative representations of hydraulic-conductivity anisotropy in folded fractured-sedimentary rock: Modeling groundwater flow in the Shenandoah Valley (USA)","docAbstract":"A numerical representation that explicitly represents the generalized three-dimensional anisotropy of folded fractured-sedimentary rocks in a groundwater model best reproduces the salient features of the flow system in the Shenandoah Valley, USA. This conclusion results from a comparison of four alternative representations of anisotropy in which the hydraulic-conductivity tensor represents the bedrock structure as (model A) anisotropic with variable strikes and dips, (model B) horizontally anisotropic with a uniform strike, (model C) horizontally anisotropic with variable strikes, and (model D) isotropic. Simulations using the US Geological Survey groundwater flow and transport model SUTRA are based on a representation of hydraulic conductivity that conforms to bedding planes in a three-dimensional structural model of the valley that duplicates the pattern of folded sedimentary rocks. In the most general representation, (model A), the directions of maximum and medium hydraulic conductivity conform to the strike and dip of bedding, respectively, while the minimum hydraulic-conductivity direction is perpendicular to bedding. Model A produced a physically realistic flow system that reflects the underlying bedrock structure, with a flow field that is significantly different from those produced by the other three models.
Condition indices are commonly used in an attempt to link body condition of birds to ecological variables of interest, including demographic attributes such as survival and reproduction. Most indices are based on body mass adjusted for structural body size, calculated as simple ratios or residuals from regressions. However, condition indices are often applied without confirming their predictive value (i.e., without being validated against measured values of fat and protein), which we term ‘unverified’ use. We evaluated the ability of a number of unverified indices frequently found in the literature to predict absolute and proportional levels of fat and protein across five species of waterfowl. Among indices we considered, those accounting for body size never predicted absolute protein more precisely than body mass, however, some indices improved predictability of fat, although the form of the best index varied by species. Further, the gain in precision by using a condition index to predict either absolute or percent fat was minimal (rise in r2≤0.13), and in many cases model fit was actually reduced. Our data agrees with previous assertions that the assumption that indices provide more precise indicators of body condition than body mass alone is often invalid. We strongly discourage the use of unverified indices, because subjectively selecting indices likely does little to improve precision and might in fact decrease predictability relative to using body mass alone.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1600-048X.2008.04462.x","issn":"09088","usgsCitation":"Schamber, J., Esler, D., and Flint, P.L., 2009, Evaluating the validity of using unverified indices of body condition: Journal of Avian Biology, v. 40, no. 1, p. 49-56, https://doi.org/10.1111/j.1600-048X.2008.04462.x.","productDescription":"8 p.","startPage":"49","endPage":"56","numberOfPages":"8","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":241484,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213823,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1600-048X.2008.04462.x"}],"volume":"40","issue":"1","noUsgsAuthors":false,"publicationDate":"2009-01-13","publicationStatus":"PW","scienceBaseUri":"505a0c01e4b0c8380cd529c5","contributors":{"authors":[{"text":"Schamber, J.L.","contributorId":92012,"corporation":false,"usgs":true,"family":"Schamber","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":436806,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Esler, Daniel 0000-0001-5501-4555 desler@usgs.gov","orcid":"https://orcid.org/0000-0001-5501-4555","contributorId":5465,"corporation":false,"usgs":true,"family":"Esler","given":"Daniel","email":"desler@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},{"id":12437,"text":"Simon Fraser University, Centre for Wildlife Ecology","active":true,"usgs":false}],"preferred":true,"id":436804,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Flint, Paul L. 0000-0002-8758-6993 pflint@usgs.gov","orcid":"https://orcid.org/0000-0002-8758-6993","contributorId":3284,"corporation":false,"usgs":true,"family":"Flint","given":"Paul","email":"pflint@usgs.gov","middleInitial":"L.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":436805,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036845,"text":"70036845 - 2009 - A constant stress-drop model for producing broadband synthetic seismograms: Comparison with the next generation attenuation relations","interactions":[],"lastModifiedDate":"2012-03-12T17:22:10","indexId":"70036845","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"A constant stress-drop model for producing broadband synthetic seismograms: Comparison with the next generation attenuation relations","docAbstract":"Broadband (0.1-20 Hz) synthetic seismograms for finite-fault sources were produced for a model where stress drop is constant with seismic moment to see if they can match the magnitude dependence and distance decay of response spectral amplitudes found in the Next Generation Attenuation (NGA) relations recently developed from strong-motion data of crustal earthquakes in tectonically active regions. The broadband synthetics were constructed for earthquakes of M 5.5, 6.5, and 7.5 by combining deterministic synthetics for plane-layered models at low frequencies with stochastic synthetics at high frequencies. The stochastic portion used a source model where the Brune stress drop of 100 bars is constant with seismic moment. The deterministic synthetics were calculated using an average slip velocity, and hence, dynamic stress drop, on the fault that is uniform with magnitude. One novel aspect of this procedure is that the transition frequency between the deterministic and stochastic portions varied with magnitude, so that the transition frequency is inversely related to the rise time of slip on the fault. The spectral accelerations at 0.2, 1.0, and 3.0 sec periods from the synthetics generally agreed with those from the set of NGA relations for M 5.5-7.5 for distances of 2-100 km. At distances of 100-200 km some of the NGA relations for 0.2 sec spectral acceleration were substantially larger than the values of the synthetics for M 7.5 and M 6.5 earthquakes because these relations do not have a term accounting for Q. At 3 and 5 sec periods, the synthetics for M 7.5 earthquakes generally had larger spectral accelerations than the NGA relations, although there was large scatter in the results from the synthetics. The synthetics showed a sag in response spectra at close-in distances for M 5.5 between 0.3 and 0.7 sec that is not predicted from the NGA relations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120080079","issn":"00371106","usgsCitation":"Frankel, A., 2009, A constant stress-drop model for producing broadband synthetic seismograms: Comparison with the next generation attenuation relations: Bulletin of the Seismological Society of America, v. 99, no. 2 A, p. 664-680, https://doi.org/10.1785/0120080079.","startPage":"664","endPage":"680","numberOfPages":"17","costCenters":[],"links":[{"id":217459,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120080079"},{"id":245409,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"99","issue":"2 A","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e396e4b0c8380cd46100","contributors":{"authors":[{"text":"Frankel, A. 0000-0001-9119-6106","orcid":"https://orcid.org/0000-0001-9119-6106","contributorId":41593,"corporation":false,"usgs":true,"family":"Frankel","given":"A.","affiliations":[],"preferred":false,"id":458117,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70036115,"text":"70036115 - 2009 - Geotechnical properties of cemented sands in steep slopes","interactions":[],"lastModifiedDate":"2012-03-12T17:22:02","indexId":"70036115","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2327,"text":"Journal of Geotechnical and Geoenvironmental Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Geotechnical properties of cemented sands in steep slopes","docAbstract":"An investigation into the geotechnical properties specific to assessing the stability of weakly and moderately cemented sand cliffs is presented. A case study from eroding coastal cliffs located in central California provides both the data and impetus for this study. Herein, weakly cemented sand is defined as having an unconfined compressive strength (UCS) of less than 100 kPa, and moderately cemented sand is defined as having UCS between 100 and 400 kPa. Testing shows that both materials fail in a brittle fashion and can be modeled effectively using linear Mohr-Coulomb strength parameters, although for weakly cemented sands, curvature of the failure envelope is more evident with decreasing friction and increasing cohesion at higher confinement. Triaxial tests performed to simulate the evolving stress state of an eroding cliff, using a reduction in confinement-type stress path, result in an order of magnitude decrease in strain at failure and a more brittle response. Tests aimed at examining the influence of wetting on steep slopes show that a 60% decrease in UCS, a 50% drop in cohesion, and 80% decrease in the tensile strength occurs in moderately cemented sand upon introduction to water. In weakly cemented sands, all compressive, cohesive, and tensile strength is lost upon wetting and saturation. The results indicate that particular attention must be given to the relative level of cementation, the effects of groundwater or surficial seepage, and the small-scale strain response when performing geotechnical slope stability analyses on these materials. ?? 2009 ASCE.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geotechnical and Geoenvironmental Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1061/(ASCE)GT.1943-5606.0000094","issn":"10900241","usgsCitation":"Collins, B., and Sitar, N., 2009, Geotechnical properties of cemented sands in steep slopes: Journal of Geotechnical and Geoenvironmental Engineering, v. 135, no. 10, p. 1359-1366, https://doi.org/10.1061/(ASCE)GT.1943-5606.0000094.","startPage":"1359","endPage":"1366","numberOfPages":"8","costCenters":[],"links":[{"id":246494,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218479,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0000094"}],"volume":"135","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a28c3e4b0c8380cd5a3b1","contributors":{"authors":[{"text":"Collins, B.D.","contributorId":57632,"corporation":false,"usgs":true,"family":"Collins","given":"B.D.","email":"","affiliations":[],"preferred":false,"id":454294,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sitar, N.","contributorId":105092,"corporation":false,"usgs":true,"family":"Sitar","given":"N.","email":"","affiliations":[],"preferred":false,"id":454295,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70037400,"text":"70037400 - 2009 - Rayleigh-wave mode separation by high-resolution linear radon transform","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037400","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Rayleigh-wave mode separation by high-resolution linear radon transform","docAbstract":"Multichannel analysis of surface waves (MASW) method is an effective tool for obtaining vertical shear wave profiles from a single non-invasive measurement. One key step of the MASW method is generation of a dispersion image and extraction of a reliable dispersion curve from raw multichannel shot records. Because different Rayleigh-wave modes normally interfere with each other in the time and space domain, it is necessary to perform mode separation and reconstruction to increase the accuracy of phase velocities determined from a dispersion image. In this paper, we demonstrate the effectiveness of high-resolution linear Radon transform (LRT) as a means of separating and reconstructing multimode, dispersive Rayleigh-wave energy. We first introduce high-resolution LRT methods and Rayleigh-wave mode separation using high-resolution LRT. Next, we use synthetic data and a real-world example to demonstrate the effectiveness of Rayleigh-wave mode separation using high-resolution LRT. Our synthetic and real-world results demonstrate that (1) high-resolution LRT successfully separates and reconstructs multimode dispersive Rayleigh-wave energy with high resolution allowing the multimode energy to be more accurately determined. The horizontal resolution of the Rayleigh-wave method can be increased by extraction of dispersion curves from a pair of traces in the mode-separated shot gather and (2) multimode separation and reconstruction expand the usable frequency range of higher mode dispersive energy, which increases the depth of investigation and provides a means for accurately determining cut-off frequencies. ?? 2009 The Authors Journal compilation ?? 2009 RAS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-246X.2009.04277.x","issn":"0956540X","usgsCitation":"Luo, Y., Xia, J., Miller, R., Xu, Y., Liu, J., and Liu, Q., 2009, Rayleigh-wave mode separation by high-resolution linear radon transform: Geophysical Journal International, v. 179, no. 1, p. 254-264, https://doi.org/10.1111/j.1365-246X.2009.04277.x.","startPage":"254","endPage":"264","numberOfPages":"11","costCenters":[],"links":[{"id":245101,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217179,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.2009.04277.x"}],"volume":"179","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a955fe4b0c8380cd81994","contributors":{"authors":[{"text":"Luo, Y.","contributorId":28417,"corporation":false,"usgs":true,"family":"Luo","given":"Y.","email":"","affiliations":[],"preferred":false,"id":460884,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Xia, J.","contributorId":63513,"corporation":false,"usgs":true,"family":"Xia","given":"J.","email":"","affiliations":[],"preferred":false,"id":460886,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, R. D.","contributorId":92693,"corporation":false,"usgs":true,"family":"Miller","given":"R. D.","affiliations":[],"preferred":false,"id":460887,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Xu, Y.","contributorId":47816,"corporation":false,"usgs":true,"family":"Xu","given":"Y.","email":"","affiliations":[],"preferred":false,"id":460885,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Liu, J.","contributorId":23672,"corporation":false,"usgs":false,"family":"Liu","given":"J.","affiliations":[],"preferred":false,"id":460883,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Liu, Q.","contributorId":17827,"corporation":false,"usgs":true,"family":"Liu","given":"Q.","email":"","affiliations":[],"preferred":false,"id":460882,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70037451,"text":"70037451 - 2009 - Urban streams across the USA: Lessons learned from studies in 9 metropolitan areas","interactions":[],"lastModifiedDate":"2021-02-04T21:34:54.194429","indexId":"70037451","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2564,"text":"Journal of the North American Benthological Society","onlineIssn":"1937-237X","printIssn":"0887-3593","active":true,"publicationSubtype":{"id":10}},"title":"Urban streams across the USA: Lessons learned from studies in 9 metropolitan areas","docAbstract":"Studies of the effects of urbanization on stream ecosystems have usually focused on single metropolitan areas. Synthesis of the results of such studies have been useful in developing general conceptual models of the effects of urbanization, but the strength of such generalizations is enhanced by applying consistent study designs and methods to multiple metropolitan areas across large geographic scales. We summarized the results from studies of the effects of urbanization on stream ecosystems in 9 metropolitan areas across the US (Boston, Massachusetts; Raleigh, North Carolina; Atlanta, Georgia; Birmingham, Alabama; Milwaukee-Green Bay, Wisconsin; Denver, Colorado; Dallas-Fort Worth, Texas; Salt Lake City, Utah; and Portland, Oregon). These studies were conducted as part of the US Geological Survey’s National Water-Quality Assessment Program and were based on a common study design and used standard sample-collection and processing methods to facilitate comparisons among study areas. All studies included evaluations of hydrology, physical habitat, water quality, and biota (algae, macroinvertebrates, fish). Four major conclusions emerged from the studies. First, responses of hydrologic, physical-habitat, water-quality, and biotic variables to urbanization varied among metropolitan areas, except that insecticide inputs consistently increased with urbanization. Second, prior land use, primarily forest and agriculture, appeared to be the most important determinant of the response of biota to urbanization in the areas we studied. Third, little evidence was found for resistance to the effects of urbanization by macroinvertebrate assemblages, even at low levels of urbanization. Fourth, benthic macroinvertebrates have important advantages for assessing the effects of urbanization on stream ecosystems relative to algae and fishes. Overall, our results demonstrate regional differences in the effects of urbanization on stream biota and suggest additional studies to elucidate the causes of these underlying differences.
","language":"English","publisher":"University of Chicago Press","doi":"10.1899/08-153.1","usgsCitation":"Brown, L.R., Cuffney, T.F., Coles, J.F., Fitzpatrick, F., McMahon, G., Steuer, J., Bell, A.H., and May, J.T., 2009, Urban streams across the USA: Lessons learned from studies in 9 metropolitan areas: Journal of the North American Benthological Society, v. 28, no. 4, p. 1051-1069, https://doi.org/10.1899/08-153.1.","productDescription":"19 p.","startPage":"1051","endPage":"1069","numberOfPages":"19","ipdsId":"IP-008405","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":466,"text":"New England Water Science Center","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":476403,"rank":1,"type":{"id":41,"text":"Open Access External Repository 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ahbell@usgs.gov","orcid":"https://orcid.org/0000-0002-7199-2145","contributorId":1752,"corporation":false,"usgs":true,"family":"Bell","given":"Amanda","email":"ahbell@usgs.gov","middleInitial":"H.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true}],"preferred":true,"id":461116,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"May, Jason T. 0000-0002-5699-2112 jasonmay@usgs.gov","orcid":"https://orcid.org/0000-0002-5699-2112","contributorId":617,"corporation":false,"usgs":true,"family":"May","given":"Jason","email":"jasonmay@usgs.gov","middleInitial":"T.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":false,"id":461112,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70037399,"text":"70037399 - 2009 - Hierarchical Bayesian analysis to incorporate age uncertainty in growth curve analysis and estimates of age from length: Florida manatee (Trichechus manatus) carcasses","interactions":[],"lastModifiedDate":"2012-03-12T17:22:09","indexId":"70037399","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1169,"text":"Canadian Journal of Fisheries and Aquatic Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Hierarchical Bayesian analysis to incorporate age uncertainty in growth curve analysis and estimates of age from length: Florida manatee (Trichechus manatus) carcasses","docAbstract":"Age estimation of individuals is often an integral part of species management research, and a number of ageestimation techniques are commonly employed. Often, the error in these techniques is not quantified or accounted for in other analyses, particularly in growth curve models used to describe physiological responses to environment and human impacts. Also, noninvasive, quick, and inexpensive methods to estimate age are needed. This research aims to provide two Bayesian methods to (i) incorporate age uncertainty into an age-length Schnute growth model and (ii) produce a method from the growth model to estimate age from length. The methods are then employed for Florida manatee (Trichechus manatus) carcasses. After quantifying the uncertainty in the aging technique (counts of ear bone growth layers), we fit age-length data to the Schnute growth model separately by sex and season. Independent prior information about population age structure and the results of the Schnute model are then combined to estimate age from length. Results describing the age-length relationship agree with our understanding of manatee biology. The new methods allow us to estimate age, with quantified uncertainty, for 98% of collected carcasses: 36% from ear bones, 62% from length.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Fisheries and Aquatic Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/F09-117","issn":"0706652X","usgsCitation":"Schwarz, L., and Runge, M., 2009, Hierarchical Bayesian analysis to incorporate age uncertainty in growth curve analysis and estimates of age from length: Florida manatee (Trichechus manatus) carcasses: Canadian Journal of Fisheries and Aquatic Sciences, v. 66, no. 10, p. 1775-1789, https://doi.org/10.1139/F09-117.","startPage":"1775","endPage":"1789","numberOfPages":"15","costCenters":[],"links":[{"id":245100,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217178,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/F09-117"}],"volume":"66","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3099e4b0c8380cd5d7a9","contributors":{"authors":[{"text":"Schwarz, L.K.","contributorId":59655,"corporation":false,"usgs":true,"family":"Schwarz","given":"L.K.","email":"","affiliations":[],"preferred":false,"id":460881,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Runge, M.C. 0000-0002-8081-536X","orcid":"https://orcid.org/0000-0002-8081-536X","contributorId":49312,"corporation":false,"usgs":true,"family":"Runge","given":"M.C.","affiliations":[],"preferred":false,"id":460880,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036844,"text":"70036844 - 2009 - Reassessment of probabilistic seismic hazard in the Marmara region","interactions":[],"lastModifiedDate":"2017-10-31T11:19:49","indexId":"70036844","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Reassessment of probabilistic seismic hazard in the Marmara region","docAbstract":"In 1999, the eastern coastline of the Marmara region (Turkey) witnessed increased seismic activity on the North Anatolian fault (NAF) system with two damaging earthquakes (M 7.4 Kocaeli and M 7.2 D??zce) that occurred almost three months apart. These events have reduced stress on the western segment of the NAF where it continues under the Marmara Sea. The undersea fault segments have been recently explored using bathymetric and reflection surveys. These recent findings helped scientists to understand the seismotectonic environment of the Marmara basin, which has remained a perplexing tectonic domain. On the basis of collected new data, seismic hazard of the Marmara region is reassessed using a probabilistic approach. Two different earthquake source models: (1) the smoothed-gridded seismicity model and (2) fault model and alternate magnitude-frequency relations, Gutenberg-Richter and characteristic, were used with local and imported ground-motion-prediction equations. Regional exposure is computed and quantified on a set of hazard maps that provide peak horizontal ground acceleration (PGA) and spectral acceleration at 0.2 and 1.0 sec on uniform firm-rock site condition (760 m=sec average shear wave velocity in the upper 30 m). These acceleration levels were computed for ground motions having 2% and 10% probabilities of exceedance in 50 yr, corresponding to return periods of about 2475 and 475 yr, respectively. The maximum PGA computed (at rock site) is 1.5g along the fault segments of the NAF zone extending into the Marmara Sea. The new maps generally show 10% to 15% increase for PGA, 0.2 and 1.0 sec spectral acceleration values across much of Marmara compared to previous regional hazard maps. Hazard curves and smooth design spectra for three site conditions: rock, soil, and soft-soil are provided for the Istanbul metropolitan area as possible tools in future risk estimates.","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120080285","issn":"00371106","usgsCitation":"Kalkan, E., Gulkan, P., Yilmaz, N., and Çelebi, M., 2009, Reassessment of probabilistic seismic hazard in the Marmara region: Bulletin of the Seismological Society of America, v. 99, no. 4, p. 2127-2146, https://doi.org/10.1785/0120080285.","productDescription":"20 p.","startPage":"2127","endPage":"2146","numberOfPages":"20","ipdsId":"IP-012613","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":245408,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217458,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120080285"}],"volume":"99","issue":"4","noUsgsAuthors":false,"publicationDate":"2009-07-29","publicationStatus":"PW","scienceBaseUri":"505a95c0e4b0c8380cd81bf4","contributors":{"authors":[{"text":"Kalkan, Erol 0000-0002-9138-9407 ekalkan@usgs.gov","orcid":"https://orcid.org/0000-0002-9138-9407","contributorId":1218,"corporation":false,"usgs":true,"family":"Kalkan","given":"Erol","email":"ekalkan@usgs.gov","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":458113,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gulkan, Polat","contributorId":78532,"corporation":false,"usgs":true,"family":"Gulkan","given":"Polat","email":"","affiliations":[],"preferred":false,"id":458116,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Yilmaz, Nazan","contributorId":198749,"corporation":false,"usgs":false,"family":"Yilmaz","given":"Nazan","email":"","affiliations":[],"preferred":false,"id":458115,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Çelebi, Mehmet 0000-0002-4769-7357 celebi@usgs.gov","orcid":"https://orcid.org/0000-0002-4769-7357","contributorId":3205,"corporation":false,"usgs":true,"family":"Çelebi","given":"Mehmet","email":"celebi@usgs.gov","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":false,"id":458114,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70034526,"text":"70034526 - 2009 - A global map of rainfed cropland areas (GMRCA) at the end of last millennium using remote sensing","interactions":[],"lastModifiedDate":"2012-03-12T17:21:42","indexId":"70034526","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2027,"text":"International Journal of Applied Earth Observation and Geoinformation","active":true,"publicationSubtype":{"id":10}},"title":"A global map of rainfed cropland areas (GMRCA) at the end of last millennium using remote sensing","docAbstract":"The overarching goal of this study was to produce a global map of rainfed cropland areas (GMRCA) and calculate country-by-country rainfed area statistics using remote sensing data. A suite of spatial datasets, methods and protocols for mapping GMRCA were described. These consist of: (a) data fusion and composition of multi-resolution time-series mega-file data-cube (MFDC), (b) image segmentation based on precipitation, temperature, and elevation zones, (c) spectral correlation similarity (SCS), (d) protocols for class identification and labeling through uses of SCS R2-values, bi-spectral plots, space-time spiral curves (ST-SCs), rich source of field-plot data, and zoom-in-views of Google Earth (GE), and (e) techniques for resolving mixed classes by decision tree algorithms, and spatial modeling. The outcome was a 9-class GMRCA from which country-by-country rainfed area statistics were computed for the end of the last millennium. The global rainfed cropland area estimate from the GMRCA 9-class map was 1.13 billion hectares (Bha). The total global cropland areas (rainfed plus irrigated) was 1.53 Bha which was close to national statistics compiled by FAOSTAT (1.51 Bha). The accuracies and errors of GMRCA were assessed using field-plot and Google Earth data points. The accuracy varied between 92 and 98% with kappa value of about 0.76, errors of omission of 2-8%, and the errors of commission of 19-36%. ?? 2008 Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Applied Earth Observation and Geoinformation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jag.2008.11.002","issn":"15698432","usgsCitation":"Biradar, C., Thenkabail, P., Noojipady, P., Li, Y., Dheeravath, V., Turral, H., Velpuri, M., Gumma, M., Gangalakunta, O., Cai, X., Xiao, X., Schull, M., Alankara, R., Gunasinghe, S., and Mohideen, S., 2009, A global map of rainfed cropland areas (GMRCA) at the end of last millennium using remote sensing: International Journal of Applied Earth Observation and Geoinformation, v. 11, no. 2, p. 114-129, https://doi.org/10.1016/j.jag.2008.11.002.","startPage":"114","endPage":"129","numberOfPages":"16","costCenters":[],"links":[{"id":216037,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jag.2008.11.002"},{"id":243876,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e409e4b0c8380cd46386","contributors":{"authors":[{"text":"Biradar, C.M.","contributorId":35563,"corporation":false,"usgs":true,"family":"Biradar","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":446210,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thenkabail, P.S.","contributorId":66071,"corporation":false,"usgs":true,"family":"Thenkabail","given":"P.S.","email":"","affiliations":[],"preferred":false,"id":446216,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Noojipady, P.","contributorId":42453,"corporation":false,"usgs":true,"family":"Noojipady","given":"P.","affiliations":[],"preferred":false,"id":446212,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Li, Y.","contributorId":41394,"corporation":false,"usgs":true,"family":"Li","given":"Y.","affiliations":[],"preferred":false,"id":446211,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dheeravath, V.","contributorId":55234,"corporation":false,"usgs":true,"family":"Dheeravath","given":"V.","affiliations":[],"preferred":false,"id":446215,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Turral, H.","contributorId":50750,"corporation":false,"usgs":true,"family":"Turral","given":"H.","affiliations":[],"preferred":false,"id":446213,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Velpuri, M. 0000-0002-6370-1926","orcid":"https://orcid.org/0000-0002-6370-1926","contributorId":7935,"corporation":false,"usgs":true,"family":"Velpuri","given":"M.","affiliations":[],"preferred":false,"id":446208,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Gumma, M.K.","contributorId":12286,"corporation":false,"usgs":true,"family":"Gumma","given":"M.K.","email":"","affiliations":[],"preferred":false,"id":446209,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Gangalakunta, O.R.P.","contributorId":84588,"corporation":false,"usgs":true,"family":"Gangalakunta","given":"O.R.P.","email":"","affiliations":[],"preferred":false,"id":446220,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Cai, X.L.","contributorId":81711,"corporation":false,"usgs":true,"family":"Cai","given":"X.L.","email":"","affiliations":[],"preferred":false,"id":446218,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Xiao, X.","contributorId":82869,"corporation":false,"usgs":true,"family":"Xiao","given":"X.","email":"","affiliations":[],"preferred":false,"id":446219,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Schull, M.A.","contributorId":70618,"corporation":false,"usgs":true,"family":"Schull","given":"M.A.","affiliations":[],"preferred":false,"id":446217,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Alankara, R.D.","contributorId":94883,"corporation":false,"usgs":true,"family":"Alankara","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":446222,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Gunasinghe, S.","contributorId":50751,"corporation":false,"usgs":true,"family":"Gunasinghe","given":"S.","email":"","affiliations":[],"preferred":false,"id":446214,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Mohideen, S.","contributorId":90130,"corporation":false,"usgs":true,"family":"Mohideen","given":"S.","email":"","affiliations":[],"preferred":false,"id":446221,"contributorType":{"id":1,"text":"Authors"},"rank":15}]}} ,{"id":70037395,"text":"70037395 - 2009 - The 20th-century development and expansion of Louisiana shelf hypoxia, Gulf of Mexico","interactions":[],"lastModifiedDate":"2023-12-07T14:37:53.298764","indexId":"70037395","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1742,"text":"Geo-Marine Letters","active":true,"publicationSubtype":{"id":10}},"title":"The 20th-century development and expansion of Louisiana shelf hypoxia, Gulf of Mexico","docAbstract":"Since systematic measurements of Louisiana continental-shelf waters were initiated in 1985, hypoxia (oxygen content <2 mg L-1) has increased considerably in an area termed the dead zone. Monitoring and modeling studies have concluded that the expansion of the Louisiana shelf dead zone is related to increased anthropogenically derived nutrient delivery from the Mississippi River drainage basin, physical and hydrographical changes of the Louisiana Shelf, and possibly coastal erosion of wetlands in southern Louisiana. In order to track the development and expansion of seasonal low-oxygen conditions on the Louisiana shelf prior to 1985, we used a specific low-oxygen foraminiferal faunal proxy, the PEB index, which has been shown statistically to represent the modern Louisiana hypoxia zone. We constructed a network of 13 PEB records with excess 210Pb-derived chronologies to establish the development of low-oxygen and hypoxic conditions over a large portion of the modern dead zone for the last 100 years. The PEB index record indicates that areas of low-oxygen bottom water began to appear in the early 1910s in isolated hotspots near the Mississippi Delta and rapidly expanded across the entire Louisiana shelf beginning in the 1950s. Since ???1950, the percentage of PEB species has steadily increased over a large portion of the modern dead zone. By 1960, subsurface low-oxygen conditions were occurring seasonally over a large part of the geographic area now known as the dead zone. The long-term trends in the PEB index are consistent with the 20th-century observational and proxy data for low oxygen and hypoxia. ?? 2009 US Government.","language":"English","publisher":"Springer","doi":"10.1007/s00367-009-0158-2","usgsCitation":"Osterman, L., Poore, R., Swarzenski, P., Senn, D., and DiMarco, S.F., 2009, The 20th-century development and expansion of Louisiana shelf hypoxia, Gulf of Mexico: Geo-Marine Letters, v. 29, no. 6, p. 405-414, https://doi.org/10.1007/s00367-009-0158-2.","productDescription":"10 p.","startPage":"405","endPage":"414","numberOfPages":"10","costCenters":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":245046,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Louisiana","otherGeospatial":"Gulf of Mexico","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -94.10236111182375,\n 29.57870136527805\n ],\n [\n -94.10236111182375,\n 27.344152892983175\n ],\n [\n -89.41789316398751,\n 27.344152892983175\n ],\n [\n -89.41789316398751,\n 29.57870136527805\n ],\n [\n -94.10236111182375,\n 29.57870136527805\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"29","issue":"6","noUsgsAuthors":false,"publicationDate":"2009-09-02","publicationStatus":"PW","scienceBaseUri":"505ba64ee4b08c986b321038","contributors":{"authors":[{"text":"Osterman, L.E.","contributorId":53836,"corporation":false,"usgs":true,"family":"Osterman","given":"L.E.","email":"","affiliations":[],"preferred":false,"id":460863,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Poore, R.Z.","contributorId":35314,"corporation":false,"usgs":true,"family":"Poore","given":"R.Z.","email":"","affiliations":[],"preferred":false,"id":460861,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":460860,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Senn, D.B.","contributorId":37178,"corporation":false,"usgs":true,"family":"Senn","given":"D.B.","affiliations":[],"preferred":false,"id":460862,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"DiMarco, Steven F.","contributorId":15435,"corporation":false,"usgs":true,"family":"DiMarco","given":"Steven","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":460859,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ]}