The High Resolution Stereo Camera (HRSC) has been orbiting the planet Mars since January 2004 onboard the European Space Agency (ESA) Mars Express mission and delivers imagery which is being used for topographic mapping of the planet. The HRSC team has conducted a systematic inter-comparison of different alternatives for the production of high resolution digital terrain models (DTMs) from the multi look HRSC push broom imagery. Based on carefully chosen test sites the test participants have produced DTMs which have been subsequently analysed in a quantitative and a qualitative manner. This paper reports on the results obtained in this test.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Planetary and Space Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.pss.2007.07.006","issn":"00320633","usgsCitation":"Heipke, C., Oberst, J., Albertz, J., Attwenger, M., Dorninger, P., Dorrer, E., Ewe, M., Gehrke, S., Gwinner, K., Hirschmuller, H., Kim, J., Kirk, R.L., Mayer, H., Muller, J., Rengarajan, R., Rentsch, M., Schmidt, R., Scholten, F., Shan, J., Spiegel, M., Wahlisch, M., and Neukum, G., 2007, Evaluating planetary digital terrain models-The HRSC DTM test: Planetary and Space Science, v. 55, no. 14, p. 2173-2191, https://doi.org/10.1016/j.pss.2007.07.006.","productDescription":"19 p.","startPage":"2173","endPage":"2191","numberOfPages":"19","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":477132,"rank":1,"type":{"id":41,"text":"Open Access External Repository 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R.","contributorId":38777,"corporation":false,"usgs":true,"family":"Schmidt","given":"R.","affiliations":[],"preferred":false,"id":432659,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Scholten, F.","contributorId":100175,"corporation":false,"usgs":true,"family":"Scholten","given":"F.","email":"","affiliations":[],"preferred":false,"id":432669,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Shan, J.","contributorId":33532,"corporation":false,"usgs":true,"family":"Shan","given":"J.","email":"","affiliations":[],"preferred":false,"id":432658,"contributorType":{"id":1,"text":"Authors"},"rank":19},{"text":"Spiegel, M.","contributorId":26515,"corporation":false,"usgs":true,"family":"Spiegel","given":"M.","email":"","affiliations":[],"preferred":false,"id":432655,"contributorType":{"id":1,"text":"Authors"},"rank":20},{"text":"Wahlisch, M.","contributorId":62831,"corporation":false,"usgs":true,"family":"Wahlisch","given":"M.","affiliations":[],"preferred":false,"id":432663,"contributorType":{"id":1,"text":"Authors"},"rank":21},{"text":"Neukum, G.","contributorId":105443,"corporation":false,"usgs":true,"family":"Neukum","given":"G.","email":"","affiliations":[],"preferred":false,"id":432672,"contributorType":{"id":1,"text":"Authors"},"rank":22}]}} ,{"id":70031685,"text":"70031685 - 2007 - Local and regional factors affecting atmospheric mercury speciation at a remote location","interactions":[],"lastModifiedDate":"2018-10-16T11:18:36","indexId":"70031685","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2256,"text":"Journal of Environmental Engineering and Science","active":true,"publicationSubtype":{"id":10}},"title":"Local and regional factors affecting atmospheric mercury speciation at a remote location","docAbstract":"Atmospheric concentrations of elemental (Hg0), reactive gaseous (RGM), and particulate (PHg) mercury were measured at two remote sites in the midwestern United States. Concurrent measurements of Hg0, PHg, and RGM obtained at Devil's Lake and Mt. Horeb, located approximately 65 km apart, showed that Hg0 and PHg concentrations were affected by regional, as well as local sources, while RGM was mainly impacted by local sources. Plumes reaching the Devil's Lake site from a nearby coal-fired power plant significantly impacted SO2 and RGM concentrations at Devil's Lake, but had little impact on Hg0. Our findings suggest that traditional modeling approaches to assess sources of mercury deposited that utilize source emissions and large-scale grids may not be sufficient to predict mercury deposition at sensitive locations due to the importance of small-scale sources and processes. We suggest the use of a receptor-based monitoring to better understand mercury source-receptor relationships.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental Engineering and Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/S07-005","issn":"14962551","usgsCitation":"Manolopoulos, H., Schauer, J., Purcell, M., Rudolph, T., Olson, M.L., Rodger, B., and Krabbenhoft, D., 2007, Local and regional factors affecting atmospheric mercury speciation at a remote location: Journal of Environmental Engineering and Science, v. 6, no. 5, p. 491-501, https://doi.org/10.1139/S07-005.","productDescription":"11 p.","startPage":"491","endPage":"501","numberOfPages":"11","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239835,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212362,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/S07-005"}],"country":"United States","state":"Wisconsin","volume":"6","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a48d7e4b0c8380cd6817a","contributors":{"authors":[{"text":"Manolopoulos, H.","contributorId":74573,"corporation":false,"usgs":true,"family":"Manolopoulos","given":"H.","email":"","affiliations":[],"preferred":false,"id":432688,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schauer, J.J.","contributorId":93262,"corporation":false,"usgs":true,"family":"Schauer","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":432690,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Purcell, M.D.","contributorId":104707,"corporation":false,"usgs":true,"family":"Purcell","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":432691,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rudolph, T.M.","contributorId":13803,"corporation":false,"usgs":true,"family":"Rudolph","given":"T.M.","email":"","affiliations":[],"preferred":false,"id":432685,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Olson, Mark L.","contributorId":149743,"corporation":false,"usgs":false,"family":"Olson","given":"Mark","email":"","middleInitial":"L.","affiliations":[{"id":17808,"text":"University of Illinois, Champaign","active":true,"usgs":false}],"preferred":false,"id":432686,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Rodger, B.","contributorId":28429,"corporation":false,"usgs":true,"family":"Rodger","given":"B.","email":"","affiliations":[],"preferred":false,"id":432687,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Krabbenhoft, David P. 0000-0003-1964-5020 dpkrabbe@usgs.gov","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":118001,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"David P.","email":"dpkrabbe@usgs.gov","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":false,"id":432689,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70031630,"text":"70031630 - 2007 - Consistency of L4 TM absolute calibration with respect to the L5 TM sensor based on near-simultaneous image acquisition","interactions":[],"lastModifiedDate":"2022-05-17T16:27:34.255739","indexId":"70031630","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Consistency of L4 TM absolute calibration with respect to the L5 TM sensor based on near-simultaneous image acquisition","docAbstract":"The Landsat archive provides more than 35 years of uninterrupted multispectral remotely sensed data of Earth observations. Since 1972, Landsat missions have carried different types of sensors, from the Return Beam Vidicon (RBV) camera to the Enhanced Thematic Mapper Plus (ETM+). However, the Thematic Mapper (TM) sensors on Landsat 4 (L4) and Landsat 5 (L5), launched in 1982 and 1984 respectively, are the backbone of an extensive archive. Effective April 2, 2007, the radiometric calibration of L5 TM data processed and distributed by the U.S. Geological Survey (USGS) Center for Earth Resources Observation and Science (EROS) was updated to use an improved lifetime gain model, based on the instrument's detector response to pseudo-invariant desert site data and cross-calibration with the L7 ETM+. However, no modifications were ever made to the radiometric calibration procedure of the Landsat 4 (L4) TM data. The L4 TM radiometric calibration procedure has continued to use the Internal Calibrator (IC) based calibration algorithms and the post calibration dynamic ranges, as previously defined. To evaluate the \"current\" absolute accuracy of these two sensors, image pairs from the L5 TM and L4 TM sensors were compared. The number of coincident image pairs in the USGS EROS archive is limited, so the scene selection for the cross-calibration studies proved to be a challenge. Additionally, because of the lack of near-simultaneous images available over well-characterized and traditionally used calibration sites, alternate sites that have high reflectance, large dynamic range, high spatial uniformity, high sun elevation, and minimal cloud cover were investigated. The alternate sites were identified in Yuma, Iraq, Egypt, Libya, and Algeria. The cross-calibration approach involved comparing image statistics derived from large common areas observed eight days apart by the two sensors. This paper summarizes the average percent differences in reflectance estimates obtained between the two sensors. The work presented in this paper is a first step in understanding the current performance of L4 TM absolute calibration and potentially serves as a platform to revise and improve the radiometric calibration procedures implemented for the processing of L4 TM data.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of SPIE - The International Society for Optical Engineering","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Earth Observing Systems XII","conferenceDate":"Aug 26-28, 2007","conferenceLocation":"San Diego, CA","language":"English","publisher":"SPIE","doi":"10.1117/12.734208","usgsCitation":"Chander, G., Helder, D., Malla, R., Micijevic, E., and Mettler, C.J., 2007, Consistency of L4 TM absolute calibration with respect to the L5 TM sensor based on near-simultaneous image acquisition, in Proceedings of SPIE - The International Society for Optical Engineering, v. 6677, San Diego, CA, Aug 26-28, 2007, 66770F, https://doi.org/10.1117/12.734208.","productDescription":"66770F","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240076,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6677","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fa00e4b0c8380cd4d87d","contributors":{"authors":[{"text":"Chander, G.","contributorId":51449,"corporation":false,"usgs":true,"family":"Chander","given":"G.","affiliations":[],"preferred":false,"id":432423,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Helder, D. L. 0000-0002-7379-4679","orcid":"https://orcid.org/0000-0002-7379-4679","contributorId":51496,"corporation":false,"usgs":true,"family":"Helder","given":"D. L.","affiliations":[],"preferred":false,"id":432424,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Malla, R.","contributorId":9866,"corporation":false,"usgs":true,"family":"Malla","given":"R.","email":"","affiliations":[],"preferred":false,"id":432422,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Micijevic, E. 0000-0002-3828-9239","orcid":"https://orcid.org/0000-0002-3828-9239","contributorId":59939,"corporation":false,"usgs":true,"family":"Micijevic","given":"E.","affiliations":[],"preferred":false,"id":432425,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mettler, C. J.","contributorId":65670,"corporation":false,"usgs":true,"family":"Mettler","given":"C.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":432426,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70031610,"text":"70031610 - 2007 - Sorted bed forms as self-organized patterns: 2. complex forcing scenarios","interactions":[],"lastModifiedDate":"2014-08-22T10:49:48","indexId":"70031610","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2318,"text":"Journal of Geophysical Research F: Earth Surface","active":true,"publicationSubtype":{"id":10}},"title":"Sorted bed forms as self-organized patterns: 2. complex forcing scenarios","docAbstract":"We employ a numerical model to study the development of sorted bed forms under a variety of hydrodynamic and sedimentary conditions. Results indicate that increased variability in wave height decreases the growth rate of the features and can potentially give rise to complicated, a priori unpredictable, behavior. This happens because the system responds to a change in wave characteristics by attempting to self-organize into a patterned seabed of different geometry and spacing. The new wavelength might not have enough time to emerge before a new change in wave characteristics occurs, leading to less regular seabed configurations. The new seabed configuration is also highly dependent on the preexisting morphology, which further limits the possibility of predicting future behavior. For the same reasons, variability in the mean current magnitude and direction slows down the growth of features and causes patterns to develop that differ from classical sorted bed forms. Spatial variability in grain size distribution and different types of net sediment aggradation/degradation can also result in the development of sorted bed forms characterized by a less regular shape. Numerical simulations qualitatively agree with observed geometry (spacing and height) of sorted bed forms. Also in agreement with observations is that at shallower depths, sorted bed forms are more likely to be affected by changes in the forcing conditions, which might also explain why, in shallow waters, sorted bed forms are described as ephemeral features. Finally, simulations indicate that the different sorted bed form shapes and patterns observed in the field might not necessarily be related to diverse physical mechanisms. Instead, variations in sorted bed form characteristics may result from variations in local hydrodynamic and/or sedimentary conditions.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research F: Earth Surface","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1029/2006JF000666","issn":"01480227","usgsCitation":"Coco, G., Murray, A.B., Green, M.O., Thieler, E.R., and Hume, T., 2007, Sorted bed forms as self-organized patterns: 2. complex forcing scenarios: Journal of Geophysical Research F: Earth Surface, v. 112, no. F3, F03016; 14 p., https://doi.org/10.1029/2006JF000666.","productDescription":"F03016; 14 p.","numberOfPages":"14","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":477232,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jf000666","text":"Publisher Index Page"},{"id":212272,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006JF000666"},{"id":239734,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"F3","noUsgsAuthors":false,"publicationDate":"2007-08-14","publicationStatus":"PW","scienceBaseUri":"505b9313e4b08c986b31a295","contributors":{"authors":[{"text":"Coco, Giovanni","contributorId":84978,"corporation":false,"usgs":true,"family":"Coco","given":"Giovanni","affiliations":[],"preferred":false,"id":432324,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Murray, A. 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Robert 0000-0003-4311-9717 rthieler@usgs.gov","orcid":"https://orcid.org/0000-0003-4311-9717","contributorId":2488,"corporation":false,"usgs":true,"family":"Thieler","given":"E.","email":"rthieler@usgs.gov","middleInitial":"Robert","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":432320,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hume, T.M.","contributorId":10567,"corporation":false,"usgs":true,"family":"Hume","given":"T.M.","email":"","affiliations":[],"preferred":false,"id":432322,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70031015,"text":"70031015 - 2007 - Evidence for a physical linkage between galactic cosmic rays and regional climate time series","interactions":[],"lastModifiedDate":"2012-03-12T17:21:05","indexId":"70031015","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":661,"text":"Advances in Space Research","active":true,"publicationSubtype":{"id":10}},"title":"Evidence for a physical linkage between galactic cosmic rays and regional climate time series","docAbstract":"The effects of solar variability on regional climate time series were examined using a sequence of physical connections between total solar irradiance (TSI) modulated by galactic cosmic rays (GCRs), and ocean and atmospheric patterns that affect precipitation and streamflow. The solar energy reaching the Earth's surface and its oceans is thought to be controlled through an interaction between TSI and GCRs, which are theorized to ionize the atmosphere and increase cloud formation and its resultant albedo. High (low) GCR flux may promote cloudiness (clear skies) and higher (lower) albedo at the same time that TSI is lowest (highest) in the solar cycle which in turn creates cooler (warmer) ocean temperature anomalies. These anomalies have been shown to affect atmospheric flow patterns and ultimately affect precipitation over the Midwestern United States. This investigation identified a relation among TSI and geomagnetic index aa (GI-AA), and streamflow in the Mississippi River Basin for the period 1878-2004. The GI-AA was used as a proxy for GCRs. The lag time between the solar signal and streamflow in the Mississippi River at St. Louis, Missouri is approximately 34 years. The current drought (1999-2007) in the Mississippi River Basin appears to be caused by a period of lower solar activity that occurred between 1963 and 1977. There appears to be a solar \"fingerprint\" that can be detected in climatic time series in other regions of the world, with each series having a unique lag time between the solar signal and the hydroclimatic response. A progression of increasing lag times can be spatially linked to the ocean conveyor belt, which may transport the solar signal over a time span of several decades. The lag times for any one region vary slightly and may be linked to the fluctuations in the velocity of the ocean conveyor belt.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Advances in Space Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.asr.2007.02.079","issn":"02731177","usgsCitation":"Perry, C.A., 2007, Evidence for a physical linkage between galactic cosmic rays and regional climate time series: Advances in Space Research, v. 40, no. 3, p. 353-364, https://doi.org/10.1016/j.asr.2007.02.079.","startPage":"353","endPage":"364","numberOfPages":"12","costCenters":[],"links":[{"id":211619,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.asr.2007.02.079"},{"id":238938,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"40","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d30e4b0c8380cd52e79","contributors":{"authors":[{"text":"Perry, C. A.","contributorId":106149,"corporation":false,"usgs":true,"family":"Perry","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":429645,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70033014,"text":"70033014 - 2007 - Vertical spatial sensitivity and exploration depth of low-induction-number electromagnetic-induction instruments","interactions":[],"lastModifiedDate":"2018-04-02T15:24:51","indexId":"70033014","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3674,"text":"Vadose Zone Journal","active":true,"publicationSubtype":{"id":10}},"title":"Vertical spatial sensitivity and exploration depth of low-induction-number electromagnetic-induction instruments","docAbstract":"Vertical spatial sensitivity and effective depth of exploration (d e) of low-induction-number (LIN) instruments over a layered soil were evaluated using a complete numerical solution to Maxwell's equations. Previous studies using approximate mathematical solutions predicted a vertical spatial sensitivity for instruments operating under LIN conditions that, for a given transmitter-receiver coil separation (s), coil orientation, and transmitter frequency, should depend solely on depth below the land surface. When not operating under LIN conditions, vertical spatial sensitivity and de also depend on apparent soil electrical conductivity (??a) and therefore the induction number (??). In this new evaluation, we determined the range of ??a and ?? values for which the LIN conditions hold and how de changes when they do not. Two-layer soil models were simulated with both horizontal (HCP) and vertical (VCP) coplanar coil orientations. Soil layers were given electrical conductivity values ranging from 0.1 to 200 mS m-1. As expected, de decreased as ??a increased. Only the least electrically conductive soil produced the de expected when operating under LIN conditions. For the VCP orientation, this was 1.6s, decreasing to 0.8s in the most electrically conductive soil. For the HCP orientation, de decreased from 0.76s to 0.51s. Differences between this and previous studies are attributed to inadequate representation of skin-depth effect and scattering at interfaces between layers. When using LIN instruments to identify depth to water tables, interfaces between soil layers, and variations in salt or moisture content, it is important to consider the dependence of de on ??a. ?? Soil Science Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Vadose Zone Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2136/vzj2006.0120","issn":"15391663","usgsCitation":"Callegary, J., Ferre, T., and Groom, R., 2007, Vertical spatial sensitivity and exploration depth of low-induction-number electromagnetic-induction instruments: Vadose Zone Journal, v. 6, no. 1, p. 158-167, https://doi.org/10.2136/vzj2006.0120.","startPage":"158","endPage":"167","numberOfPages":"10","costCenters":[],"links":[{"id":476982,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.503.2650","text":"External Repository"},{"id":240711,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213118,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2136/vzj2006.0120"}],"volume":"6","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc242e4b08c986b32aa15","contributors":{"authors":[{"text":"Callegary, J.B.","contributorId":71769,"corporation":false,"usgs":true,"family":"Callegary","given":"J.B.","affiliations":[],"preferred":false,"id":438977,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ferre, T.P.A.","contributorId":196167,"corporation":false,"usgs":false,"family":"Ferre","given":"T.P.A.","email":"","affiliations":[],"preferred":false,"id":438975,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Groom, R.W.","contributorId":59634,"corporation":false,"usgs":true,"family":"Groom","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":438976,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031696,"text":"70031696 - 2007 - Petrology and tectonics of Phanerozoic continent formation: From island arcs to accretion and continental arc magmatism","interactions":[],"lastModifiedDate":"2023-07-12T11:22:01.220955","indexId":"70031696","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Petrology and tectonics of Phanerozoic continent formation: From island arcs to accretion and continental arc magmatism","docAbstract":"Mesozoic continental arcs in the North American Cordillera were examined here to establish a baseline model for Phanerozoic continent formation. We combine new trace-element data on lower crustal xenoliths from the Mesozoic Sierra Nevada Batholith with an extensive grid-based geochemical map of the Peninsular Ranges Batholith, the southern equivalent of the Sierras. Collectively, these observations give a three-dimensional view of the crust, which permits the petrogenesis and tectonics of Phanerozoic crust formation to be linked in space and time. Subduction of the Farallon plate beneath North America during the Triassic to early Cretaceous was characterized by trench retreat and slab rollback because old and cold oceanic lithosphere was being subducted. This generated an extensional subduction zone, which created fringing island arcs just off the Paleozoic continental margin. However, as the age of the Farallon plate at the time of subduction decreased, the extensional environment waned, allowing the fringing island arc to accrete onto the continental margin. With continued subduction, a continental arc was born and a progressively more compressional environment developed as the age of subducting slab continued to young. Refinement into a felsic crust occurred after accretion, that is, during the continental arc stage, wherein a thickened crustal and lithospheric column permitted a longer differentiation column. New basaltic arc magmas underplate and intrude the accreted terrane, suture, and former continental margin. Interaction of these basaltic magmas with pre-existing crust and lithospheric mantle created garnet pyroxenitic mafic cumulates by fractional crystallization at depth as well as gabbroic and garnet pyroxenitic restites at shallower levels by melting of pre-existing lower crust. The complementary felsic plutons formed by these deep-seated differentiation processes rose into the upper crust, stitching together the accreted terrane, suture and former continental margin. The mafic cumulates and restites, owing to their high densities, eventually foundered into the mantle, leaving behind a more felsic crust. Our grid-based sampling allows us to estimate an unbiased average upper crustal composition for the Peninsular Ranges Batholith. Major and trace-element compositions are very similar to global continental crust averaged over space and time, but in detail, the Peninsular Ranges are slightly lower in compatible to mildly incompatible elements, MgO, Mg#, V, Sc, Co, and Cr. The compositional similarities suggest a strong arc component in global continental crust, but the slight discrepancies suggest that additional crust formation processes are also important in continent formation as a whole. Finally, the delaminated Sierran garnet pyroxenites have some of the lowest U/Pb ratios ever measured for silicate rocks. Such material, if recycled and stored in the deep mantle, would generate a reservoir with very unradiogenic Pb, providing one solution to the global Pb isotope paradox.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.epsl.2007.09.025","issn":"0012821X","usgsCitation":"Lee, C., Morton, D.M., Kistler, R.W., and Baird, A.K., 2007, Petrology and tectonics of Phanerozoic continent formation: From island arcs to accretion and continental arc magmatism: Earth and Planetary Science Letters, v. 263, no. 3-4, p. 370-387, https://doi.org/10.1016/j.epsl.2007.09.025.","productDescription":"18 p.","startPage":"370","endPage":"387","numberOfPages":"18","costCenters":[],"links":[{"id":240007,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"263","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a782be4b0c8380cd7865b","contributors":{"authors":[{"text":"Lee, C.-T.A.","contributorId":20549,"corporation":false,"usgs":true,"family":"Lee","given":"C.-T.A.","email":"","affiliations":[],"preferred":false,"id":432729,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Morton, D. M.","contributorId":54608,"corporation":false,"usgs":true,"family":"Morton","given":"D.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":432731,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kistler, R. W.","contributorId":36112,"corporation":false,"usgs":true,"family":"Kistler","given":"R.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":432730,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Baird, A. K.","contributorId":65148,"corporation":false,"usgs":true,"family":"Baird","given":"A.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":432732,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031590,"text":"70031590 - 2007 - Characterisation and modelling of washover fans","interactions":[],"lastModifiedDate":"2014-08-22T14:16:01","indexId":"70031590","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Characterisation and modelling of washover fans","docAbstract":"Pre- and post-storm topography and aerial photography, collected in regions where new washover fans were formed, were studied to determine the extent of morphologic, vegetative and anthropogenic control on washover shape and extent. When overwash is funnelled through a gap in a dune ridge and then spreads laterally on the back barrier, decelerating and depositing sediment, it forms washover fans. Fans were shown to primarily occur at pre-existing gaps in the foredune. During overwash, these gaps, or overwash throats, widened and deepened. The shape and extent of the fan was shown to depend on not only the pre-storm topography, but also the existence of beach tracks, roads and other anthropogenic influences and vegetation. The cross-shore overwash profile change model by Larson et al. and Donnelly et al. was modified to include pre-storm throat widths and a lateral spreading angle estimated from the pre-storm topography as inputs and tested using cross-shore profiles through the fan centres. These new inputs make the model more generalised, such that the calibrated model is applicable to a wider range of cross-shore profiles.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceLocation":"New Orleans, LA","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/40926(239)162","isbn":"0784409269; 9780784409268","usgsCitation":"Donnelly, C., and Sallenger, A., 2007, Characterisation and modelling of washover fans, in Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, p. 2061-2073, https://doi.org/10.1061/40926(239)162.","productDescription":"13 p.","startPage":"2061","endPage":"2073","numberOfPages":"13","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":212508,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40926(239)162"},{"id":240001,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"5059f489e4b0c8380cd4bd94","contributors":{"authors":[{"text":"Donnelly, Chantal","contributorId":74955,"corporation":false,"usgs":true,"family":"Donnelly","given":"Chantal","email":"","affiliations":[],"preferred":false,"id":432240,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sallenger, Asbury H. Jr.","contributorId":27458,"corporation":false,"usgs":true,"family":"Sallenger","given":"Asbury H.","suffix":"Jr.","affiliations":[],"preferred":false,"id":432239,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70033017,"text":"70033017 - 2007 - Spatial correlation of shear-wave velocity in the San Francisco Bay Area sediments","interactions":[],"lastModifiedDate":"2023-10-06T12:00:28.083895","indexId":"70033017","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3418,"text":"Soil Dynamics and Earthquake Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Spatial correlation of shear-wave velocity in the San Francisco Bay Area sediments","docAbstract":"Ground motions recorded within sedimentary basins are variable over short distances. One important cause of the variability is that local soil properties are variable at all scales. Regional hazard maps developed for predicting site effects are generally derived from maps of surficial geology; however, recent studies have shown that mapped geologic units do not correlate well with the average shear-wave velocity of the upper 30 m, Vs(30). We model the horizontal variability of near-surface soil shear-wave velocity in the San Francisco Bay Area to estimate values in unsampled locations in order to account for site effects in a continuous manner. Previous geostatistical studies of soil properties have shown horizontal correlations at the scale of meters to tens of meters while the vertical correlations are on the order of centimeters. In this paper we analyze shear-wave velocity data over regional distances and find that surface shear-wave velocity is correlated at horizontal distances up to 4 km based on data from seismic cone penetration tests and the spectral analysis of surface waves. We propose a method to map site effects by using geostatistical methods based on the shear-wave velocity correlation structure within a sedimentary basin. If used in conjunction with densely spaced shear-wave velocity profiles in regions of high seismic risk, geostatistical methods can produce reliable continuous maps of site effects.
Pollen and ostracode evidence from lacustrine sediments underlying modern Tampa Bay, Florida, document frequent and abrupt climatic and hydrological events superimposed on deglacial warming in the subtropics. Radiocarbon chronology on well-preserved mollusk shells and pollen residue from core MD02-2579 documents continuous sedimentation in a variety of non-marine habitats in a karst-controlled basin from 20 ka to 11.5 ka.
\nDuring the last glacial maximum (LGM), much drier and cooler-than-modern conditions are indicated by pollen assemblages enriched in Chenopodiaceae and Carya, with rare Pinus (< 10%). Pinus pollen increased to 20–40% during the warming of the initial deglaciation (∼ 17.2 ka), reaching near modern abundance (60–80%) during warmer, moister climates of the Bølling/Allerød interval (14.7–12.9 ka). Within the Bølling/Allerød, centennial-scale dry events corresponding to the Older Dryas and Intra-Allerød Cold Period indicate rapid vegetation response (< 50 years) to climate variability. The Younger Dryas (12.9–11.6 ka) was characterized by two distinct phases: slightly drier than the peak Bølling/Allerød between 12.9 and 12.3 ka and much drier from 12.3 to 11.5 ka. The Tampa Bay record of deglacial atmospheric temperature and moisture can be correlated with other paleoclimate records in the North Atlantic region and has implications for climate-forcing by ice-sheet fluctuation, thermohaline circulation, and atmospheric circulation.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaeogeography, Palaeoclimatology, Palaeoecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.palaeo.2007.04.016","issn":"00310182","usgsCitation":"Willard, D., Bernhardt, C., Brooks, G.R., Cronin, T.M., Edgar, T., and Larson, R., 2007, Deglacial climate variability in central Florida, USA: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 251, no. 3-4, p. 366-382, https://doi.org/10.1016/j.palaeo.2007.04.016.","productDescription":"17 p.","startPage":"366","endPage":"382","numberOfPages":"17","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":211592,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.palaeo.2007.04.016"},{"id":238905,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","volume":"251","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fe51e4b0c8380cd4ec7c","contributors":{"authors":[{"text":"Willard, Debra A. 0000-0003-4878-0942","orcid":"https://orcid.org/0000-0003-4878-0942","contributorId":85982,"corporation":false,"usgs":true,"family":"Willard","given":"Debra A.","affiliations":[],"preferred":false,"id":429639,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bernhardt, C.E.","contributorId":65554,"corporation":false,"usgs":true,"family":"Bernhardt","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":429637,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brooks, G. R.","contributorId":96312,"corporation":false,"usgs":true,"family":"Brooks","given":"G.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":429640,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cronin, T. M. 0000-0002-2643-0979","orcid":"https://orcid.org/0000-0002-2643-0979","contributorId":42613,"corporation":false,"usgs":true,"family":"Cronin","given":"T.","email":"","middleInitial":"M.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":false,"id":429636,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Edgar, T.","contributorId":70595,"corporation":false,"usgs":true,"family":"Edgar","given":"T.","email":"","affiliations":[],"preferred":false,"id":429638,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Larson, R.","contributorId":30438,"corporation":false,"usgs":true,"family":"Larson","given":"R.","affiliations":[],"preferred":false,"id":429635,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70031739,"text":"70031739 - 2007 - Comparison of local- to regional-scale estimates of ground-water recharge in Minnesota, USA","interactions":[],"lastModifiedDate":"2023-10-03T11:20:41.383437","indexId":"70031739","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of local- to regional-scale estimates of ground-water recharge in Minnesota, USA","docAbstract":"Regional ground-water recharge estimates for Minnesota were compared to estimates made on the basis of four local- and basin-scale methods. Three local-scale methods (unsaturated-zone water balance, water-table fluctuations (WTF) using three approaches, and age dating of ground water) yielded point estimates of recharge that represent spatial scales from about 1 to about 1000 m2. A fourth method (RORA, a basin-scale analysis of streamflow records using a recession-curve-displacement technique) yielded recharge estimates at a scale of 10–1000s of km2. The RORA basin-scale recharge estimates were regionalized to estimate recharge for the entire State of Minnesota on the basis of a regional regression recharge (RRR) model that also incorporated soil and climate data. Recharge rates estimated by the RRR model compared favorably to the local and basin-scale recharge estimates. RRR estimates at study locations were about 41% less on average than the unsaturated-zone water-balance estimates, ranged from 44% greater to 12% less than estimates that were based on the three WTF approaches, were about 4% less than the age dating of ground-water estimates, and were about 5% greater than the RORA estimates. Of the methods used in this study, the WTF method is the simplest and easiest to apply. Recharge estimates made on the basis of the UZWB method were inconsistent with the results from the other methods. Recharge estimates using the RRR model could be a good source of input for regional ground-water flow models; RRR model results currently are being applied for this purpose in USGS studies elsewhere.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2006.10.010","issn":"00221694","usgsCitation":"Delin, G., Healy, R.W., Lorenz, D., and Nimmo, J., 2007, Comparison of local- to regional-scale estimates of ground-water recharge in Minnesota, USA: Journal of Hydrology, v. 334, no. 1-2, p. 231-249, https://doi.org/10.1016/j.jhydrol.2006.10.010.","productDescription":"19 p.","startPage":"231","endPage":"249","numberOfPages":"19","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":392,"text":"Minnesota Water Science Center","active":true,"usgs":true}],"links":[{"id":239641,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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R.","affiliations":[],"preferred":false,"id":432923,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031740,"text":"70031740 - 2007 - Ensuring confidence in radionuclide-based sediment chronologies and bioturbation rates","interactions":[],"lastModifiedDate":"2017-08-29T14:01:16","indexId":"70031740","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1587,"text":"Estuarine, Coastal and Shelf Science","active":true,"publicationSubtype":{"id":10}},"title":"Ensuring confidence in radionuclide-based sediment chronologies and bioturbation rates","docAbstract":"Sedimentary records of naturally occurring and fallout-derived radionuclides are widely used as tools for estimating both the ages of recent sediments and rates of sedimentation and bioturbation. Developing these records to the point of data interpretation requires careful sample collection, processing, analysis and data modeling. In this work, we document a number of potential pitfalls that can impact sediment core records and their interpretation. This paper is not intended as an exhaustive treatment of these potential problems. Rather, the emphasis is on potential problems that are not well documented in the literature, as follows: (1) the mere sampling of sediment cores at a resolution that is too coarse can result in an apparent diffusive mixing of the sedimentary record at rates comparable to diffusive bioturbation rates observed in many locations; (2) 210Pb profiles in slowly accumulating sediments can easily be misinterpreted to be driven by sedimentation, when in fact bioturbation is the dominant control. Multiple isotopes of different half lives and/or origin may help to distinguish between these two possible interpretations; (3) apparent mixing can occur due simply to numerical artifacts inherent in the finite difference approximations of the advection diffusion equation used to model sedimentation and bioturbation. Model users need to be aware of this potential problem. Solutions to each of these potential pitfalls are offered to ensure the best possible sediment age estimates and/or sedimentation and bioturbation rates can be obtained.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.ecss.2006.09.006","issn":"02727714","usgsCitation":"Crusius, J., and Kenna, T.C., 2007, Ensuring confidence in radionuclide-based sediment chronologies and bioturbation rates: Estuarine, Coastal and Shelf Science, v. 71, no. 3-4, p. 537-544, https://doi.org/10.1016/j.ecss.2006.09.006.","productDescription":"8 p.","startPage":"537","endPage":"544","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":477154,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1912/1603","text":"External Repository"},{"id":239642,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a097ee4b0c8380cd51f43","contributors":{"authors":[{"text":"Crusius, John 0000-0003-2554-0831 jcrusius@usgs.gov","orcid":"https://orcid.org/0000-0003-2554-0831","contributorId":2155,"corporation":false,"usgs":true,"family":"Crusius","given":"John","email":"jcrusius@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":432925,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kenna, Timothy C.","contributorId":36754,"corporation":false,"usgs":true,"family":"Kenna","given":"Timothy","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":432926,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70031587,"text":"70031587 - 2007 - A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70031587","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1539,"text":"Environmental Geology","active":true,"publicationSubtype":{"id":10}},"title":"A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change","docAbstract":"Excessive nitrate-nitrogen (nitrate) loss from agricultural watersheds is an environmental concern. A common conservation practice to improve stream water quality is to retire vulnerable row croplands to grass. In this paper, a groundwater travel time model based on a geographic information system (GIS) analysis of readily available soil and topographic variables was used to evaluate the time needed to observe stream nitrate concentration reductions from conversion of row crop land to native prairie in Walnut Creek watershed, Iowa. Average linear groundwater velocity in 5-m cells was estimated by overlaying GIS layers of soil permeability, land slope (surrogates for hydraulic conductivity and gradient, respectively) and porosity. Cells were summed backwards from the stream network to watershed divide to develop a travel time distribution map. Results suggested that groundwater from half of the land planted in prairie has reached the stream network during the 10 years of ongoing water quality monitoring. The mean travel time for the watershed was estimated to be 10.1 years, consistent with results from a simple analytical model. The proportion of land in the watershed and subbasins with prairie groundwater reaching the stream (10-22%) was similar to the measured reduction of stream nitrate (11-36%). Results provide encouragement that additional nitrate reductions in Walnut Creek are probable in the future as reduced nitrate groundwater from distal locations discharges to the stream network in the coming years. The high spatial resolution of the model (5-m cells) and its simplicity may make it potentially applicable for land managers interested in communicating lag time issues to the public, particularly related to nitrate concentration reductions over time. ?? 2007 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00254-007-0659-0","issn":"09430105","usgsCitation":"Schilling, K.E., and Wolter, C., 2007, A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change: Environmental Geology, v. 53, no. 2, p. 433-443, https://doi.org/10.1007/s00254-007-0659-0.","startPage":"433","endPage":"443","numberOfPages":"11","costCenters":[],"links":[{"id":212479,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00254-007-0659-0"},{"id":239969,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-02-14","publicationStatus":"PW","scienceBaseUri":"5059e2dee4b0c8380cd45ccf","contributors":{"authors":[{"text":"Schilling, K. E.","contributorId":61982,"corporation":false,"usgs":true,"family":"Schilling","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":432232,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wolter, C.F.","contributorId":23301,"corporation":false,"usgs":true,"family":"Wolter","given":"C.F.","email":"","affiliations":[],"preferred":false,"id":432231,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70029767,"text":"70029767 - 2007 - Pyroclastic activity at home plate in Gusev crater, Mars","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029767","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Pyroclastic activity at home plate in Gusev crater, Mars","docAbstract":"Home Plate is a layered plateau in Gusev crater on Mars. It is composed of clastic rocks of moderately altered alkali basalt composition, enriched in some highly volatile elements. A coarse-grained lower unit lies under a finer-grained upper unit. Textural observations indicate that the lower strata were emplaced in an explosive event, and geochemical considerations favor an explosive volcanic origin over an impact origin. The lower unit likely represents accumulation of pyroclastic materials, whereas the upper unit may represent eolian reworking of the same pyroclastic materials.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1126/science.1139045","issn":"00368075","usgsCitation":"Squyres, S.W., Aharonson, O., Clark, B.C., Cohen, B.A., Crumpler, L., de Souza, P., Farrand, W.H., Gellert, R., Grant, J., Grotzinger, J., Haldemann, A.F., Johnson, J.R., Klingelhofer, G., Lewis, K., Li, R., McCoy, T., McEwen, A.S., McSween, H., Ming, D.W., Moore, J.N., Morris, R., Parker, T.J., Rice, J.W., Ruff, S., Schmidt, M., Schroder, C., Soderblom, L., and Yen, A., 2007, Pyroclastic activity at home plate in Gusev crater, Mars: Science, v. 316, no. 5825, p. 738-742, https://doi.org/10.1126/science.1139045.","startPage":"738","endPage":"742","numberOfPages":"5","costCenters":[],"links":[{"id":477085,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://resolver.caltech.edu/CaltechAUTHORS:20130211-132009215","text":"External Repository"},{"id":212771,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1126/science.1139045"},{"id":240309,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"316","issue":"5825","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9059e4b0c8380cd7fca3","contributors":{"authors":[{"text":"Squyres, S. 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A.","contributorId":34239,"corporation":false,"usgs":true,"family":"Cohen","given":"B.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":424200,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Crumpler, L.","contributorId":59545,"corporation":false,"usgs":true,"family":"Crumpler","given":"L.","email":"","affiliations":[],"preferred":false,"id":424208,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"de Souza, P.A.","contributorId":57579,"corporation":false,"usgs":true,"family":"de Souza","given":"P.A.","affiliations":[],"preferred":false,"id":424207,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Farrand, W. H.","contributorId":64372,"corporation":false,"usgs":true,"family":"Farrand","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":424210,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Gellert, Ralf","contributorId":35049,"corporation":false,"usgs":false,"family":"Gellert","given":"Ralf","email":"","affiliations":[{"id":12660,"text":"University of Guelph","active":true,"usgs":false}],"preferred":false,"id":424201,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Grant, J.","contributorId":53929,"corporation":false,"usgs":true,"family":"Grant","given":"J.","affiliations":[],"preferred":false,"id":424204,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Grotzinger, J.P.","contributorId":76053,"corporation":false,"usgs":true,"family":"Grotzinger","given":"J.P.","affiliations":[],"preferred":false,"id":424214,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Haldemann, A. F. 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S.","contributorId":11317,"corporation":false,"usgs":true,"family":"McEwen","given":"A.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":424194,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"McSween, H.Y.","contributorId":64370,"corporation":false,"usgs":true,"family":"McSween","given":"H.Y.","affiliations":[],"preferred":false,"id":424209,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Ming, D. 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Jr.","contributorId":53040,"corporation":false,"usgs":true,"family":"Rice","given":"J.","suffix":"Jr.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":424203,"contributorType":{"id":1,"text":"Authors"},"rank":23},{"text":"Ruff, S.","contributorId":104610,"corporation":false,"usgs":true,"family":"Ruff","given":"S.","affiliations":[],"preferred":false,"id":424218,"contributorType":{"id":1,"text":"Authors"},"rank":24},{"text":"Schmidt, M.","contributorId":11746,"corporation":false,"usgs":true,"family":"Schmidt","given":"M.","affiliations":[],"preferred":false,"id":424195,"contributorType":{"id":1,"text":"Authors"},"rank":25},{"text":"Schroder, C.","contributorId":67201,"corporation":false,"usgs":true,"family":"Schroder","given":"C.","affiliations":[],"preferred":false,"id":424211,"contributorType":{"id":1,"text":"Authors"},"rank":26},{"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":424192,"contributorType":{"id":1,"text":"Authors"},"rank":27},{"text":"Yen, A.","contributorId":76054,"corporation":false,"usgs":true,"family":"Yen","given":"A.","affiliations":[],"preferred":false,"id":424215,"contributorType":{"id":1,"text":"Authors"},"rank":28}]}} ,{"id":70030327,"text":"70030327 - 2007 - Effect of tidal fluctuations on contaminant transfer to the ocean","interactions":[],"lastModifiedDate":"2012-03-12T17:21:02","indexId":"70030327","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Effect of tidal fluctuations on contaminant transfer to the ocean","docAbstract":"Variable-density groundwater flow was simulated to examine the effects that tide has on the coastward migration of a contaminant through a freshwater/saltwater interface and toward a coastal ocean boundary. Simulated ocean tides did not significantly affect the total contaminant mass input to the ocean; however, the difference in tidal and non-tidal simulated concentrations could be as much as 15%. It may be possible to numerically approximate the tidal-driven hydraulic transients in transport models that do not explicitly include tides by locally increasing dispersivity. Copyright ?? 2007 IAHS Press.","largerWorkTitle":"IAHS-AISH Publication","conferenceTitle":"International Symposium: A New Focus on Groundwater - Seawater Interactions - 24th General Assembly of the In","conferenceDate":"2 July 2007 through 13 July 2007","conferenceLocation":"Perugia","language":"English","issn":"01447","isbn":"9781901502046","usgsCitation":"Licata, I., Langevin, C., and Dausman, A., 2007, Effect of tidal fluctuations on contaminant transfer to the ocean, in IAHS-AISH Publication, no. 312, Perugia, 2 July 2007 through 13 July 2007, p. 334-340.","startPage":"334","endPage":"340","numberOfPages":"7","costCenters":[],"links":[{"id":239442,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"issue":"312","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0625e4b0c8380cd51105","contributors":{"authors":[{"text":"Licata, I.L.","contributorId":27260,"corporation":false,"usgs":true,"family":"Licata","given":"I.L.","email":"","affiliations":[],"preferred":false,"id":426710,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Langevin, C.D.","contributorId":25976,"corporation":false,"usgs":true,"family":"Langevin","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":426709,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dausman, A.M.","contributorId":99373,"corporation":false,"usgs":true,"family":"Dausman","given":"A.M.","affiliations":[],"preferred":false,"id":426711,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70029701,"text":"70029701 - 2007 - Hierarchical spatiotemporal matrix models for characterizing invasions","interactions":[],"lastModifiedDate":"2013-02-23T08:47:12","indexId":"70029701","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1039,"text":"Biometrics","active":true,"publicationSubtype":{"id":10}},"title":"Hierarchical spatiotemporal matrix models for characterizing invasions","docAbstract":"The growth and dispersal of biotic organisms is an important subject in ecology. Ecologists are able to accurately describe survival and fecundity in plant and animal populations and have developed quantitative approaches to study the dynamics of dispersal and population size. Of particular interest are the dynamics of invasive species. Such nonindigenous animals and plants can levy significant impacts on native biotic communities. Effective models for relative abundance have been developed; however, a better understanding of the dynamics of actual population size (as opposed to relative abundance) in an invasion would be beneficial to all branches of ecology. In this article, we adopt a hierarchical Bayesian framework for modeling the invasion of such species while addressing the discrete nature of the data and uncertainty associated with the probability of detection. The nonlinear dynamics between discrete time points are intuitively modeled through an embedded deterministic population model with density-dependent growth and dispersal components. Additionally, we illustrate the importance of accommodating spatially varying dispersal rates. The method is applied to the specific case of the Eurasian Collared-Dove, an invasive species at mid-invasion in the United States at the time of this writing. ?? 2006, The International Biometric Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biometrics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1541-0420.2006.00725.x","issn":"0006341X","usgsCitation":"Hooten, M., Wikle, C.K., Dorazio, R., and Royle, J., 2007, Hierarchical spatiotemporal matrix models for characterizing invasions: Biometrics, v. 63, no. 2, https://doi.org/10.1111/j.1541-0420.2006.00725.x.","costCenters":[],"links":[{"id":240414,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212857,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1541-0420.2006.00725.x"}],"volume":"63","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-01-23","publicationStatus":"PW","scienceBaseUri":"505a30a6e4b0c8380cd5d815","contributors":{"authors":[{"text":"Hooten, M.B.","contributorId":50261,"corporation":false,"usgs":true,"family":"Hooten","given":"M.B.","email":"","affiliations":[],"preferred":false,"id":423917,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wikle, C. K.","contributorId":57975,"corporation":false,"usgs":true,"family":"Wikle","given":"C.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":423918,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dorazio, R.M. 0000-0003-2663-0468","orcid":"https://orcid.org/0000-0003-2663-0468","contributorId":23475,"corporation":false,"usgs":true,"family":"Dorazio","given":"R.M.","affiliations":[],"preferred":false,"id":423916,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Royle, J. Andrew 0000-0003-3135-2167","orcid":"https://orcid.org/0000-0003-3135-2167","contributorId":96221,"corporation":false,"usgs":true,"family":"Royle","given":"J. Andrew","affiliations":[],"preferred":false,"id":423919,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70031567,"text":"70031567 - 2007 - Biotic and abiotic controls of argentine ant invasion success at local and landscape scales","interactions":[],"lastModifiedDate":"2012-03-12T17:21:09","indexId":"70031567","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Biotic and abiotic controls of argentine ant invasion success at local and landscape scales","docAbstract":"Although the ecological success of introduced species hinges on biotic interactions and physical conditions, few experimental studies - especially on animals - have simultaneously investigated the relative importance of both types of factors. The lack of such research may stem from the common assumption that native and introduced species exhibit similar environmental tolerances. Here we combine experimental and spatial modeling approaches (1) to determine the relative importance of biotic and abiotic controls of Argentine ant (Linepithema humile) invasion success, (2) to examine how the importance of these factors changes with spatial scale in southern California (USA), and (3) to assess how Argentine ants differ from native ants in their environmental tolerances. A factorial field experiment that combined native ant removal with irrigation revealed that Argentine ants failed to invade any dry plots (even those lacking native ants) but readily invaded all moist plots. Native ants slowed the spread of Argentine ants into irrigated plots but did not prevent invasion. In areas without Argentine ants, native ant species showed variable responses to irrigation. At the landscape scale, Argentine ant occurrence was positively correlated with minimum winter temperature (but not precipitation), whereas native ant diversity increased with precipitation and was negatively correlated with minimum winter temperature. These results are of interest for several reasons. First, they demonstrate that fine-scale differences in the physical environment can eclipse biotic resistance from native competitors in determining community susceptibility to invasion. Second, our results illustrate surprising complexities with respect to how the abiotic factors limiting invasion can change with spatial scale, and third, how native and invasive species can differ in their responses to the physical environment. Idiosyncratic and scale-dependent processes complicate attempts to forecast where introduced species will occur and how their range limits may shift as a result of climate change. ?? 2007 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/07-0122.1","issn":"00129658","usgsCitation":"Menke, S., Fisher, R., Jetz, W., and Holway, D., 2007, Biotic and abiotic controls of argentine ant invasion success at local and landscape scales: Ecology, v. 88, no. 12, p. 3164-3173, https://doi.org/10.1890/07-0122.1.","startPage":"3164","endPage":"3173","numberOfPages":"10","costCenters":[],"links":[{"id":477123,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1890/07-0122.1","text":"Publisher Index Page"},{"id":212630,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/07-0122.1"},{"id":240145,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f1a0e4b0c8380cd4ad48","contributors":{"authors":[{"text":"Menke, S.B.","contributorId":78938,"corporation":false,"usgs":true,"family":"Menke","given":"S.B.","email":"","affiliations":[],"preferred":false,"id":432155,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fisher, Robert N. 0000-0002-2956-3240","orcid":"https://orcid.org/0000-0002-2956-3240","contributorId":51675,"corporation":false,"usgs":true,"family":"Fisher","given":"Robert N.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":432154,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jetz, W.","contributorId":101458,"corporation":false,"usgs":true,"family":"Jetz","given":"W.","affiliations":[],"preferred":false,"id":432156,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Holway, D.A.","contributorId":31581,"corporation":false,"usgs":true,"family":"Holway","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":432153,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70032923,"text":"70032923 - 2007 - Ecological linkages between headwaters and downstream ecosystems: Transport of organic matter, invertebrates, and wood down headwater channels","interactions":[],"lastModifiedDate":"2012-03-12T17:21:37","indexId":"70032923","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Ecological linkages between headwaters and downstream ecosystems: Transport of organic matter, invertebrates, and wood down headwater channels","docAbstract":"Headwater streams make up a large proportion of the total length and watershed area of fluvial networks, and are partially characterized by the large volume of organic matter (large wood, detritus, and dissolved organic matter) and invertebrate inputs from the riparian forest, relative to stream size. Much of those inputs are exported to downstream reaches through time where they potentially subsidize river communities. The relative rates, timing, and conversion processes that carry inputs from small streams to downstream reaches are reasonably well quantified. For example, larger particles are converted to smaller particles, which are more easily exported. Also, dissolved organic matter and surface biofilms are converted to larger particles which can be more easily intercepted by consumers. However, the quality of these materials as it affects biological activity downstream is not well known, nor is the extent to which timing permits biological use of those particles. These ecological unknowns need to be resolved. Further, land uses may disrupt and diminish material transport to downstream reaches by removing sources (e.g., forest harvest), by affecting transport and decomposition processes (e.g., flow regulation, irrigation, changes in biotic communities), and by altering mechanisms of storage within headwaters (e.g., channelization). We present conceptual models of energy and nutrient fluxes that outline small stream processes and pathways important to downstream communities, and we identify informational gaps that, if filled, could significantly advance the understanding of linkages between headwater streams and larger rivers. The models, based on empirical evidence and best professional judgment, suggest that navigable waters are significantly influenced by headwater streams through hydrological and ecological connectivities, and land use can dramatically influence these natural connectivities, impacting downstream riverine ecosystems. ?? 2007 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2007.00007.x","issn":"1093474X","usgsCitation":"Wipfli, M., Richardson, J., and Naiman, R., 2007, Ecological linkages between headwaters and downstream ecosystems: Transport of organic matter, invertebrates, and wood down headwater channels: Journal of the American Water Resources Association, v. 43, no. 1, p. 72-85, https://doi.org/10.1111/j.1752-1688.2007.00007.x.","startPage":"72","endPage":"85","numberOfPages":"14","costCenters":[],"links":[{"id":213232,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2007.00007.x"},{"id":240837,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-01-26","publicationStatus":"PW","scienceBaseUri":"505a0558e4b0c8380cd50d78","contributors":{"authors":[{"text":"Wipfli, M.S.","contributorId":51963,"corporation":false,"usgs":true,"family":"Wipfli","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":438540,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Richardson, J.S.","contributorId":80642,"corporation":false,"usgs":true,"family":"Richardson","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":438541,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Naiman, R.J.","contributorId":14354,"corporation":false,"usgs":true,"family":"Naiman","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":438539,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70033122,"text":"70033122 - 2007 - A field test of the centrifugal community organization model using psammophilic gerbils in Israel's southern coastal plain","interactions":[],"lastModifiedDate":"2012-03-12T17:21:34","indexId":"70033122","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1604,"text":"Evolutionary Ecology Research","active":true,"publicationSubtype":{"id":10}},"title":"A field test of the centrifugal community organization model using psammophilic gerbils in Israel's southern coastal plain","docAbstract":"Background: An optimal habitat selection model called centrifugal community organization (CCO) predicts that species, although they have the same primary habitat, may co-exist owing to their ability to use different secondary habitats. Goal: Test the predictions of CCO with field experiments. Species: The Egyptian sand gerbil (40 g), Gerbillus pyramidum, and Allenby's gerbil (25 g), G. andersoni allenbyi. Site: Ashdod sand dunes in the southern coastal plain of Israel. Three sandy habitats are present: shifting, semi-stabilized, and stabilized sand. Gerbils occupied all three habitats. Methods: We surveyed rodent abundance, activity levels, and foraging behaviour while experimentally removing G. pyramidum. Results: Three predictions of the CCO model were supported. Both species did best in the semi-stabilized habitat. However, they differed in their secondary habitats. Gerbillus pyramidum preferred the shifting sand habitat, whereas G. a. allenbyi preferred the stabilized habitat. Habitat selection by both species depended on density. However, in contrast to CCO, G. pyramidum dominated the core habitat and excluded G. a. allenbyi. We term this variant of CCO, 'asymmetric CCO'. Conclusions: The fundamental feature of CCO appears valid: co-existence may result not because of what each competing species does best, but because of what they do as a back-up. But in contrast to the prediction of the original CCO model, all dynamic traces of interaction can vanish if the system includes interference competition. ?? 2007 Gideon Wasserberg.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Evolutionary Ecology Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"15220613","usgsCitation":"Wasserberg, G., Kotler, B., Morris, D., and Abramsky, Z., 2007, A field test of the centrifugal community organization model using psammophilic gerbils in Israel's southern coastal plain: Evolutionary Ecology Research, v. 9, no. 2, p. 299-311.","startPage":"299","endPage":"311","numberOfPages":"13","costCenters":[],"links":[{"id":240783,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e3d7e4b0c8380cd46256","contributors":{"authors":[{"text":"Wasserberg, Gideon","contributorId":31185,"corporation":false,"usgs":true,"family":"Wasserberg","given":"Gideon","email":"","affiliations":[],"preferred":false,"id":439461,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kotler, B.P.","contributorId":33908,"corporation":false,"usgs":true,"family":"Kotler","given":"B.P.","affiliations":[],"preferred":false,"id":439462,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Morris, D.W.","contributorId":94078,"corporation":false,"usgs":true,"family":"Morris","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":439464,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Abramsky, Z.","contributorId":88928,"corporation":false,"usgs":true,"family":"Abramsky","given":"Z.","email":"","affiliations":[],"preferred":false,"id":439463,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70032922,"text":"70032922 - 2007 - Evaluation of the status of anurans on a refuge in suburban Maryland","interactions":[],"lastModifiedDate":"2012-03-12T17:21:37","indexId":"70032922","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2334,"text":"Journal of Herpetology","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of the status of anurans on a refuge in suburban Maryland","docAbstract":"Because many anurans have well-defined breeding seasons and male anurans produce loud advertisement calls, surveys of these breeding choruses are believed to provide a dependable means of monitoring population trends. The Patuxent Research Refuge initiated such a calling survey in the spring of 1997, which uses volunteers to collect anuran (frog and toad) calling survey data. The primary goal of initiating the calling surveys at the Patuxent Refuge was to obtain baseline information on anuran populations, such as species occurrence, frequency of occurrence, and relative abundance over time. In this paper, we used the calling survey data to develop models for the \"proportion of area occupied\" by individual anuran species, a method in which analysis is focused on the proportion of sites that are occupied by a species, instead of the number of individuals present in the population. This type of analysis is ideal for use in large-scale monitoring programs focused on species that are difficult to count, such as anurans or birds. We considered models for proportion of area occupied that allow for imperfect detection (that is, a species may be present but go undetected during sampling) by incorporating parameters that describe detection probability and the response of detection probability to various environmental and sampling covariates. Our results indicate that anuran populations on the Patuxent Research Refuge have high rates of occupancy compared to areas nearby and that extinction and colonization rates are stable. The potential uses for \"proportion of area occupied\" analyses are far-reaching and will allow for more accurate quantification of data and better-informed management decisions for calling surveys on a larger scale. Copyright 2007 Society for the Study of Amphibians and Reptiles.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Herpetology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1670/0022-1511(2007)41[52:EOTSOA]2.0.CO;2","issn":"00221511","usgsCitation":"Brander, S., Royle, J., and Eames, M., 2007, Evaluation of the status of anurans on a refuge in suburban Maryland: Journal of Herpetology, v. 41, no. 1, p. 52-60, https://doi.org/10.1670/0022-1511(2007)41[52:EOTSOA]2.0.CO;2.","startPage":"52","endPage":"60","numberOfPages":"9","costCenters":[],"links":[{"id":213231,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1670/0022-1511(2007)41[52:EOTSOA]2.0.CO;2"},{"id":240836,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0cf4e4b0c8380cd52d71","contributors":{"authors":[{"text":"Brander, S.M.","contributorId":45431,"corporation":false,"usgs":true,"family":"Brander","given":"S.M.","email":"","affiliations":[],"preferred":false,"id":438536,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Royle, J. Andrew 0000-0003-3135-2167","orcid":"https://orcid.org/0000-0003-3135-2167","contributorId":96221,"corporation":false,"usgs":true,"family":"Royle","given":"J. Andrew","affiliations":[],"preferred":false,"id":438538,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Eames, M.","contributorId":70094,"corporation":false,"usgs":true,"family":"Eames","given":"M.","email":"","affiliations":[],"preferred":false,"id":438537,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70031211,"text":"70031211 - 2007 - Potential hazards of environmental contaminants to avifauna residing in the Chesapeake Bay estuary","interactions":[],"lastModifiedDate":"2017-01-03T13:35:04","indexId":"70031211","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Potential hazards of environmental contaminants to avifauna residing in the Chesapeake Bay estuary","docAbstract":"A search of the Contaminant Exposure and Effects-Terrestrial Vertebrates (CEE-TV) database revealed that 70% of the 839 Chesapeake Bay records deal with avian species. Studies conducted on waterbirds in the past 15 years indicate that organochlorine contaminants have declined in eggs and tissues, although p,p'-DDE, total polychlorinated biphenyls (PCBs) and coplanar PCB congeners may still exert sublethal and reproductive effects in some locations. There have been numerous reports of avian die-off events related to organophosphorus and carbamate pesticides. More contemporary contaminants (e.g., alkylphenols, ethoxylates, perfluorinated compounds, polybrominated diphenyl ethers) are detectable in bird eggs in the most industrialized portions of the Bay, but interpretation of these data is difficult because adverse effect levels are incompletely known for birds. Two moderaterized oil spills resulted in the death of several hundred birds, and about 500 smaller spill events occur annually in the watershed. With the exception of lead, concentrations of cadmium, mercury, and selenium in eggs and tissues appear to be below toxic thresholds for waterbirds. Fishing tackle and discarded plastics, that can entangle and kill young and adults, are prevalent in nests in some Bay tributaries. It is apparent that exposure and potential effects of several classes of contaminants (e.g., dioxins, dibenzofurans, rodenticides, pharmaceuticals, personal care products, lead shot, and some metals) have not been systematically examined in the past 15 years, highlighting the need for toxicological evaluation of birds found dead, and perhaps an avian ecotoxicological monitoring program. Although oil spills, spent lead shot, some pesticides, and industrial pollutants occasionally harm Chesapeake avifauna, contaminants no longer evoke the population level effects that were observed in Ospreys (Pandion haliaetus) and Bald Eagles (Haliaeetus leucocephalus) through the 1970s.","language":"English","publisher":"The Waterbird Society","doi":"10.1675/1524-4695(2007)030[0063:PHOECT]2.0.CO;2","issn":"15244695","usgsCitation":"Rattner, B.A., and McGowan, P.C., 2007, Potential hazards of environmental contaminants to avifauna residing in the Chesapeake Bay estuary: Waterbirds, v. 30, no. sp1, p. 63-81, https://doi.org/10.1675/1524-4695(2007)030[0063:PHOECT]2.0.CO;2.","productDescription":"19 p.","startPage":"63","endPage":"81","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":238983,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211655,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1675/1524-4695(2007)030[0063:PHOECT]2.0.CO;2"}],"volume":"30","issue":"sp1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7f34e4b0c8380cd7a9ae","contributors":{"authors":[{"text":"Rattner, Barnett A. 0000-0003-3676-2843 brattner@usgs.gov","orcid":"https://orcid.org/0000-0003-3676-2843","contributorId":4142,"corporation":false,"usgs":true,"family":"Rattner","given":"Barnett","email":"brattner@usgs.gov","middleInitial":"A.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":430547,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGowan, Peter C.","contributorId":13867,"corporation":false,"usgs":false,"family":"McGowan","given":"Peter","email":"","middleInitial":"C.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":430546,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70033124,"text":"70033124 - 2007 - Evaluation and comparison of gross primary production estimates for the Northern Great Plains grasslands","interactions":[],"lastModifiedDate":"2018-02-21T15:40:52","indexId":"70033124","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Evaluation and comparison of gross primary production estimates for the Northern Great Plains grasslands","docAbstract":"Two spatially-explicit estimates of gross primary production (GPP) are available for the Northern Great Plains. An empirical piecewise regression (PWR) GPP model was developed from flux tower measurements to map carbon flux across the region. The Moderate Resolution Imaging Spectrometer (MODIS) GPP model is a process-based model that uses flux tower data to calibrate its parameters. Verification and comparison of the regional PWR GPP and the global MODIS GPP are important for the modeling of grassland carbon flux. This study compared GPP estimates from PWR and MODIS models with five towers in the grasslands. Among them, PWR GPP and MODIS GPP showed a good agreement with tower-based GPP at three towers. The global MODIS GPP, however, did not agree well with tower-based GPP at two other towers, probably because of the insensitivity of MODIS model to regional ecosystem and climate change and extreme soil moisture conditions. Cross-validation indicated that the PWR model is relatively robust for predicting regional grassland GPP. However, the PWR model should include a wide variety of flux tower data as the training data sets to obtain more accurate results.
In addition, GPP maps based on the PWR and MODIS models were compared for the entire region. In the northwest and south, PWR GPP was much higher than MODIS GPP. These areas were characterized by the higher water holding capacity with a lower proportion of C4 grasses in the northwest and a higher proportion of C4 grasses in the south. In the central and southeastern regions, PWR GPP was much lower than MODIS GPP under complicated conditions with generally mixed C3/C4 grasses. The analysis indicated that the global MODIS GPP model has some limitations on detecting moisture stress, which may have been caused by the facts that C3 and C4 grasses are not distinguished, water stress is driven by vapor pressure deficit (VPD) from coarse meteorological data, and MODIS land cover data are unable to differentiate the sub-pixel cropland components.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.rse.2006.08.012","issn":"00344257","usgsCitation":"Zhang, L., Wylie, B.K., Loveland, T.R., Fosnight, E.A., Tieszen, L.L., Ji, L., and Gilmanov, T., 2007, Evaluation and comparison of gross primary production estimates for the Northern Great Plains grasslands: Remote Sensing of Environment, v. 106, no. 2, p. 173-189, https://doi.org/10.1016/j.rse.2006.08.012.","productDescription":"17 p.","startPage":"173","endPage":"189","numberOfPages":"17","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240817,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213213,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2006.08.012"}],"volume":"106","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0c05e4b0c8380cd529d7","contributors":{"authors":[{"text":"Zhang, Li","contributorId":98139,"corporation":false,"usgs":true,"family":"Zhang","given":"Li","affiliations":[],"preferred":false,"id":439467,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wylie, Bruce K. 0000-0002-7374-1083 wylie@usgs.gov","orcid":"https://orcid.org/0000-0002-7374-1083","contributorId":750,"corporation":false,"usgs":true,"family":"Wylie","given":"Bruce","email":"wylie@usgs.gov","middleInitial":"K.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":439469,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Loveland, Thomas R. 0000-0003-3114-6646 loveland@usgs.gov","orcid":"https://orcid.org/0000-0003-3114-6646","contributorId":140256,"corporation":false,"usgs":true,"family":"Loveland","given":"Thomas","email":"loveland@usgs.gov","middleInitial":"R.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":439471,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fosnight, Eugene A. 0000-0002-8557-3697 fosnight@usgs.gov","orcid":"https://orcid.org/0000-0002-8557-3697","contributorId":2961,"corporation":false,"usgs":true,"family":"Fosnight","given":"Eugene","email":"fosnight@usgs.gov","middleInitial":"A.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":439468,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tieszen, Larry L. tieszen@usgs.gov","contributorId":2831,"corporation":false,"usgs":true,"family":"Tieszen","given":"Larry","email":"tieszen@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":true,"id":439466,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ji, Lei 0000-0002-6133-1036 lji@usgs.gov","orcid":"https://orcid.org/0000-0002-6133-1036","contributorId":2832,"corporation":false,"usgs":true,"family":"Ji","given":"Lei","email":"lji@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":439472,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Gilmanov, Tagir","contributorId":6351,"corporation":false,"usgs":true,"family":"Gilmanov","given":"Tagir","affiliations":[],"preferred":false,"id":439470,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70029717,"text":"70029717 - 2007 - Latin hypercube approach to estimate uncertainty in ground water vulnerability","interactions":[],"lastModifiedDate":"2012-03-12T17:21:39","indexId":"70029717","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Latin hypercube approach to estimate uncertainty in ground water vulnerability","docAbstract":"A methodology is proposed to quantify prediction uncertainty associated with ground water vulnerability models that were developed through an approach that coupled multivariate logistic regression with a geographic information system (GIS). This method uses Latin hypercube sampling (LHS) to illustrate the propagation of input error and estimate uncertainty associated with the logistic regression predictions of ground water vulnerability. Central to the proposed method is the assumption that prediction uncertainty in ground water vulnerability models is a function of input error propagation from uncertainty in the estimated logistic regression model coefficients (model error) and the values of explanatory variables represented in the GIS (data error). Input probability distributions that represent both model and data error sources of uncertainty were simultaneously sampled using a Latin hypercube approach with logistic regression calculations of probability of elevated nonpoint source contaminants in ground water. The resulting probability distribution represents the prediction intervals and associated uncertainty of the ground water vulnerability predictions. The method is illustrated through a ground water vulnerability assessment of the High Plains regional aquifer. Results of the LHS simulations reveal significant prediction uncertainties that vary spatially across the regional aquifer. Additionally, the proposed method enables a spatial deconstruction of the prediction uncertainty that can lead to improved prediction of ground water vulnerability. ?? 2007 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2006.00298.x","issn":"0017467X","usgsCitation":"Gurdak, J., McCray, J., Thyne, G., and Qi, S., 2007, Latin hypercube approach to estimate uncertainty in ground water vulnerability: Ground Water, v. 45, no. 3, p. 348-361, https://doi.org/10.1111/j.1745-6584.2006.00298.x.","startPage":"348","endPage":"361","numberOfPages":"14","costCenters":[],"links":[{"id":213084,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2006.00298.x"},{"id":240673,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-03-20","publicationStatus":"PW","scienceBaseUri":"505a4580e4b0c8380cd6738a","contributors":{"authors":[{"text":"Gurdak, J.J.","contributorId":35119,"corporation":false,"usgs":true,"family":"Gurdak","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":423983,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCray, J.E.","contributorId":31985,"corporation":false,"usgs":true,"family":"McCray","given":"J.E.","affiliations":[],"preferred":false,"id":423982,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thyne, G.","contributorId":20983,"corporation":false,"usgs":true,"family":"Thyne","given":"G.","affiliations":[],"preferred":false,"id":423981,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Qi, S.L.","contributorId":76140,"corporation":false,"usgs":true,"family":"Qi","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":423984,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70171391,"text":"70171391 - 2007 - Eutrophication study at the Panjiakou-Daheiting Reservoir system, northern Hebei Province, People's Republic of China: Chlorophyll-a model and sources of phosphorus and nitrogen","interactions":[],"lastModifiedDate":"2018-09-13T16:44:10","indexId":"70171391","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":680,"text":"Agricultural Water Management","active":true,"publicationSubtype":{"id":10}},"title":"Eutrophication study at the Panjiakou-Daheiting Reservoir system, northern Hebei Province, People's Republic of China: Chlorophyll-a model and sources of phosphorus and nitrogen","docAbstract":"Concentrations, loads, and sources of nitrate and total phosphorus were investigated at the Panjiakou and Daheiting Reservoir system in northern Hebei Province, People's Republic of China. The Luan He River is the primary source of water to these reservoirs, and the upstream watershed has a mix of land uses including agriculture, forest, and one large urban center. The reservoirs have a primary use for storage of drinking water and partially supply Tianjin City with its annual needs. Secondary uses include flood control and aqua culture (fish cages). The response of the reservoir system from phosphorus input, with respect to chlorophyll-a production from algae, was fitted to a model of normalized phosphorus loading that regresses the average summer-time chlorophyll-a concentration to the average annual phosphorus concentration of the reservoir. Comparison of the normalized phosphorus loading and chlorophyll-a response of this system to other reservoirs throughout the world indicate a level of eutrophication that will require up to an approximate 5–10-fold decrease in annual phosphorus load to bring the system to a more acceptable level of algal productivity. Isotopes of nitrogen and oxygen in dissolved nitrate were measured from the headwater streams and at various locations along the major rivers that provide the majority of water to these reservoirs. Those isotopic measurements indicate that the sources of nitrate change from natural background in the rivers to animal manure and septic waste upstream of the reservoir. Although the isotopic measurements suggest that animal and septic wastes are a primary source of nutrients, measurements of the molar ratio of nitrogen to phosphorus are more indicative of row-cropping practices. Options for reduction of nutrient loads include changing the management practices of the aqua culture, installation of new sewage treatment systems in the large urbanized area of the upper watershed, and agricultural management practices that would reduce the loading of nutrients and soil erosion from that land use.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.agwat.2007.08.002","usgsCitation":"Domagalski, J.L., Lin, C., Luo, Y., Kang, J., Wang, S., Brown, L.R., and Munn, M.D., 2007, Eutrophication study at the Panjiakou-Daheiting Reservoir system, northern Hebei Province, People's Republic of China: Chlorophyll-a model and sources of phosphorus and nitrogen: Agricultural Water Management, v. 94, no. 1-3, p. 43-53, https://doi.org/10.1016/j.agwat.2007.08.002.","productDescription":"11 p.","startPage":"43","endPage":"53","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":321872,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"94","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"574eb5c6e4b0ee97d51a83b6","contributors":{"authors":[{"text":"Domagalski, Joseph L. 0000-0002-6032-757X joed@usgs.gov","orcid":"https://orcid.org/0000-0002-6032-757X","contributorId":1330,"corporation":false,"usgs":true,"family":"Domagalski","given":"Joseph","email":"joed@usgs.gov","middleInitial":"L.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":630846,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lin, Chao","contributorId":169724,"corporation":false,"usgs":false,"family":"Lin","given":"Chao","email":"","affiliations":[],"preferred":false,"id":630847,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Luo, Yang","contributorId":89585,"corporation":false,"usgs":true,"family":"Luo","given":"Yang","email":"","affiliations":[],"preferred":false,"id":630848,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kang, Jie","contributorId":72265,"corporation":false,"usgs":true,"family":"Kang","given":"Jie","email":"","affiliations":[],"preferred":false,"id":630849,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wang, Shaoming","contributorId":38745,"corporation":false,"usgs":true,"family":"Wang","given":"Shaoming","email":"","affiliations":[],"preferred":false,"id":630850,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brown, Larry R. 0000-0001-6702-4531 lrbrown@usgs.gov","orcid":"https://orcid.org/0000-0001-6702-4531","contributorId":1717,"corporation":false,"usgs":true,"family":"Brown","given":"Larry","email":"lrbrown@usgs.gov","middleInitial":"R.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":630851,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Munn, Mark D. 0000-0002-7154-7252 mdmunn@usgs.gov","orcid":"https://orcid.org/0000-0002-7154-7252","contributorId":976,"corporation":false,"usgs":true,"family":"Munn","given":"Mark","email":"mdmunn@usgs.gov","middleInitial":"D.","affiliations":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"preferred":true,"id":630852,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ]}