Reliable estimates of fish biomass are vital to the management of aquatic ecosystems and their associated fisheries. Acoustic and midwater trawl surveys are an efficient sampling method for estimating fish biomass in large bodies of water. To improve the precision of biomass estimates from combined acoustic and midwater trawl surveys, sampling effort should be optimally allocated within each stage of the survey design. Based on information collected during fish surveys, we developed an approach to improve the design of combined acoustic and midwater trawl surveys through stratification. Geographic strata for acoustic surveying and depth strata for midwater trawling were defined using neighbor-restricted cluster analysis, and the optimal allocation of sampling effort for each was then determined. As an example, we applied this survey stratification approach to data from lakewide acoustic and midwater trawl surveys of Lake Michigan prey fishes. Precision of biomass estimates from surveys with and without geographic stratification was compared through resampling. Use of geographic stratification with optimal sampling allocation reduced the variance of Lake Michigan acoustic biomass estimates by 77%. Stratification and optimal allocation at each stage of an acoustic and midwater trawl survey should serve to reduce the variance of the resulting biomass estimates.
","language":"English","publisher":"Taylor & Francis","doi":"10.1577/M04-216.1","issn":"02755947","usgsCitation":"Adams, J., Argyle, R., Fleischer, G., Curtis, G., and Stickel, R., 2006, Improving the design of acoustic and midwater trawl surveys through stratification, with an application to Lake Michigan prey fishes: North American Journal of Fisheries Management, v. 26, no. 3, p. 612-621, https://doi.org/10.1577/M04-216.1.","productDescription":"10 p.","startPage":"612","endPage":"621","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":236556,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209828,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M04-216.1"}],"volume":"26","issue":"3","noUsgsAuthors":false,"publicationDate":"2006-08-01","publicationStatus":"PW","scienceBaseUri":"505a397fe4b0c8380cd6193f","contributors":{"authors":[{"text":"Adams, J.V.","contributorId":94069,"corporation":false,"usgs":true,"family":"Adams","given":"J.V.","email":"","affiliations":[],"preferred":false,"id":420587,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Argyle, R.L.","contributorId":103614,"corporation":false,"usgs":true,"family":"Argyle","given":"R.L.","affiliations":[],"preferred":false,"id":420588,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fleischer, G.W.","contributorId":33281,"corporation":false,"usgs":true,"family":"Fleischer","given":"G.W.","email":"","affiliations":[],"preferred":false,"id":420584,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Curtis, G.L.","contributorId":62003,"corporation":false,"usgs":true,"family":"Curtis","given":"G.L.","email":"","affiliations":[],"preferred":false,"id":420586,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Stickel, R.G.","contributorId":61229,"corporation":false,"usgs":true,"family":"Stickel","given":"R.G.","email":"","affiliations":[],"preferred":false,"id":420585,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70028927,"text":"70028927 - 2006 - Using experimental and geospatial data to estimate regional carbon sequestration potential under no-till management","interactions":[],"lastModifiedDate":"2017-04-11T16:06:03","indexId":"70028927","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3419,"text":"Soil Science","active":true,"publicationSubtype":{"id":10}},"title":"Using experimental and geospatial data to estimate regional carbon sequestration potential under no-till management","docAbstract":"Conservation management of croplands at the plot scale has demonstrated a great potential to mitigate the greenhouse effect through sequestration of atmospheric carbon (C) into soil. This study estimated the potential of soil to sequester C through the conversion of croplands from conventional tillage (CT) to no-till (NT) in the East Central United States between 1992 and 2012. This study used the baseline soil organic C (SOC) pool (SOCP) inventory and the empirical models that describe the relationships of the SOCP under CT and NT, respectively, to their baseline SOCP in the upper 30-cm depth of soil. The baseline SOCP were obtained from the State Soil Geographic database, and the cropland distribution map was generated from the 1992 National Land Cover Database. The results indicate that if all the croplands under CT in 1992 were converted to NT, the SOCP would increase by 16.8% by 2012, which results in a total C sink of 136 Tg after 20 years. A greater sequestration rate would occur in soils with lower baseline SOCP, but the sink strength would be weaker with increasing SOCP levels. The CT-induced C sources tend to become larger in soils with higher baseline levels, which can be significantly reduced by adopting NT. We conclude that baseline SOC contents are an indicator of C sequestration potential with NT practices. ?? 2006 Lippincott Williams & Wilkins, Inc.","language":"English","publisher":"Wolters Kluwer Healt","doi":"10.1097/01.ss.0000235845.17826.f0","issn":"0038075X","usgsCitation":"Tan, Z., Lal, R., and Liu, S., 2006, Using experimental and geospatial data to estimate regional carbon sequestration potential under no-till management: Soil Science, v. 171, no. 12, p. 950-959, https://doi.org/10.1097/01.ss.0000235845.17826.f0.","productDescription":"10 p.","startPage":"950","endPage":"959","numberOfPages":"10","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":236557,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209829,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1097/01.ss.0000235845.17826.f0"}],"volume":"171","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc04ce4b08c986b32a045","contributors":{"authors":[{"text":"Tan, Z.","contributorId":60831,"corporation":false,"usgs":true,"family":"Tan","given":"Z.","email":"","affiliations":[],"preferred":false,"id":420590,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lal, R.","contributorId":18559,"corporation":false,"usgs":true,"family":"Lal","given":"R.","email":"","affiliations":[],"preferred":false,"id":420589,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Liu, S.","contributorId":93170,"corporation":false,"usgs":true,"family":"Liu","given":"S.","affiliations":[],"preferred":false,"id":420591,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70028748,"text":"70028748 - 2006 - Effects of increased feeding frequency on growth of hybrid bluegill in ponds","interactions":[],"lastModifiedDate":"2012-03-12T17:21:00","indexId":"70028748","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2885,"text":"North American Journal of Aquaculture","active":true,"publicationSubtype":{"id":10}},"title":"Effects of increased feeding frequency on growth of hybrid bluegill in ponds","docAbstract":"Increased feeding frequency has been used in aquaculture to increase growth and food conversion efficiency, and recent laboratory studies have indicated that feeding frequency could be used to reduce the size variation within groups of hybrid bluegills (F1: male bluegill Lepomis macrochirus x female green sunfish L. cyanellus). Our experiment evaluated the growth of pond-reared hybrid bluegills fed equal amounts of food either once or four times per day. We were particularly interested in reducing the size variation and increasing the percentage of harvestable-size fish (???110 g). After 194 d, there was no significant effect of feeding frequency on growth, food conversion efficiency, size variation, or percentage of harvestable-size fish.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Aquaculture","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/A05-066.1","issn":"15222055","usgsCitation":"Sager, C., and Winkelman, D., 2006, Effects of increased feeding frequency on growth of hybrid bluegill in ponds: North American Journal of Aquaculture, v. 68, no. 4, p. 313-316, https://doi.org/10.1577/A05-066.1.","startPage":"313","endPage":"316","numberOfPages":"4","costCenters":[],"links":[{"id":236544,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209818,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/A05-066.1"}],"volume":"68","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-10-01","publicationStatus":"PW","scienceBaseUri":"505a0725e4b0c8380cd5159b","contributors":{"authors":[{"text":"Sager, C.R.","contributorId":9837,"corporation":false,"usgs":true,"family":"Sager","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":419599,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Winkelman, D.L. 0000-0002-5247-0114","orcid":"https://orcid.org/0000-0002-5247-0114","contributorId":48739,"corporation":false,"usgs":true,"family":"Winkelman","given":"D.L.","affiliations":[],"preferred":false,"id":419600,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70028929,"text":"70028929 - 2006 - Alternate corrections for estimating actual wetland evapotranspiration from potential evapotranspiration","interactions":[],"lastModifiedDate":"2018-04-03T17:38:06","indexId":"70028929","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3750,"text":"Wetlands","onlineIssn":"1943-6246","printIssn":"0277-5212","active":true,"publicationSubtype":{"id":10}},"title":"Alternate corrections for estimating actual wetland evapotranspiration from potential evapotranspiration","docAbstract":"Corrections can be used to estimate actual wetland evapotranspiration (AET) from potential evapotranspiration (PET) as a means to define the hydrology of wetland areas. Many alternate parameterizations for correction coefficients for three PET equations are presented, covering a wide range of possible data-availability scenarios. At nine sites in the wetland Everglades of south Florida, USA, the relatively complex PET Penman equation was corrected to daily total AET with smaller standard errors than the PET simple and Priestley-Taylor equations. The simpler equations, however, required less data (and thus less funding for instrumentation), with the possibility of being corrected to AET with slightly larger, comparable, or even smaller standard errors. Air temperature generally corrected PET simple most effectively to wetland AET, while wetland stage and humidity generally corrected PET Priestley-Taylor and Penman most effectively to wetland AET. Stage was identified for PET Priestley-Taylor and Penman as the data type with the most correction ability at sites that are dry part of each year or dry part of some years. Finally, although surface water generally was readily available at each monitoring site, AET was not occurring at potential rates, as conceptually expected under well-watered conditions. Apparently, factors other than water availability, such as atmospheric and stomata resistances to vapor transport, also were limiting the PET rate. ?? 2006, The Society of Wetland Scientists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wetlands","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1672/0277-5212(2006)26[528:ACFEAW]2.0.CO;2","issn":"02775212","usgsCitation":"Shoemaker, W., and Sumner, D.M., 2006, Alternate corrections for estimating actual wetland evapotranspiration from potential evapotranspiration: Wetlands, v. 26, no. 2, p. 528-543, https://doi.org/10.1672/0277-5212(2006)26[528:ACFEAW]2.0.CO;2.","startPage":"528","endPage":"543","numberOfPages":"16","costCenters":[],"links":[{"id":236591,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209855,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1672/0277-5212(2006)26[528:ACFEAW]2.0.CO;2"}],"volume":"26","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e97ce4b0c8380cd482f6","contributors":{"authors":[{"text":"Shoemaker, W. Barclay bshoemak@usgs.gov","contributorId":1495,"corporation":false,"usgs":true,"family":"Shoemaker","given":"W. Barclay","email":"bshoemak@usgs.gov","affiliations":[{"id":269,"text":"FLWSC-Ft. Lauderdale","active":true,"usgs":true},{"id":156,"text":"Caribbean Water Science Center","active":true,"usgs":true}],"preferred":true,"id":420599,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sumner, D. M.","contributorId":100827,"corporation":false,"usgs":true,"family":"Sumner","given":"D.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":420600,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70028739,"text":"70028739 - 2006 - DNA damage and external lesions in brown bullheads (Ameiurus nebulosus) from contaminated habitats","interactions":[],"lastModifiedDate":"2018-10-29T10:18:47","indexId":"70028739","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"DNA damage and external lesions in brown bullheads (Ameiurus nebulosus) from contaminated habitats","docAbstract":"The Comet assay was used to compare levels of DNA damage in brown bullheads (Ameiurus nebulosus) collected from three known contaminated locations, the Cuyahoga River (OH, USA), Ashtabula River (OH, USA; both tributaries to Lake Erie, USA), and Ashumet Pond (Cape Cod, MA, USA), with brown bullheads collected from three paired reference sites, Old Woman Creek (OH, USA), Conneaut River (OH, USA; both tributaries to Lake Erie), and Great Herring Pond (mainland MA, USA), respectively. Blood was sampled from each fish, and the Comet assay was conducted on erythrocytes. The assay results demonstrate that fish from the three contaminated sites each suffered higher DNA damage compared with fish from their respective reference sites. The results also show that the genetic damage was associated with the occurrence of external lesions and deformities in fish. The Comet assay is sufficiently sensitive to detect exposure of natural fish populations to environmental levels of genotoxic contaminants.
This study explores how the relationship between flow and riparian vegetation varies along a montane river. We mapped occurrence of woody riparian plant communities along 58 km of the San Miguel River in southwestern Colorado. We determined the recurrence interval of inundation for each plant community by combining step-backwater hydraulic modeling at 4 representative reaches with Log-Pearson analysis of 4 stream gaging stations. Finally, we mapped bottomland surficial geology and used a Geographic Information System to overlay the coverages of geology and vegetation. Plant communities were distinctly arrayed along the hydrologic gradient. The Salix exigua Nuttall (sand-bar willow) community occurred mostly on surfaces with a recurrence interval of inundation shorter than 2.2 years; the Betula occidentalis Hooker (river birch) community peaked on sites with recurrence intervals of inundation between 2.2 and 4.6 years. The hydrologic position occupied by communities dominated by Populus angustifolia James (narrowleaf cottonwood) was strongly related to age of trees and species composition of understory shrubs. The fraction of riparian vegetation on surfaces historically inundated by the river decreased in the upstream direction from almost 100% near Uravan to <50% along the South Fork of the San Miguel River. In upstream reaches much of the physical disturbance necessary to maintain riparian vegetation is provided by valley-side processes including debris flows, floods from minor tributaries, landslides, and beaver activity. Where valley-side processes are important, prediction of riparian vegetation change based on alterations of river flow will be incomplete.
","language":"English","publisher":"Brigham Young University","doi":"10.3398/1527-0904(2006)66[78:TALVIW]2.0.CO;2","usgsCitation":"Friedman, J.M., Auble, G., Andrews, E., Kittel, G., Madole, R., Griffin, E., and Allred, T.M., 2006, Transverse and longitudinal variation in woody riparian vegetation along a montane river: Western North American Naturalist, v. 66, no. 1, p. 78-91, https://doi.org/10.3398/1527-0904(2006)66[78:TALVIW]2.0.CO;2.","productDescription":"p. 78-91","startPage":"78","endPage":"91","numberOfPages":"14","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":488724,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://scholarsarchive.byu.edu/wnan/vol66/iss1/7","text":"External Repository"},{"id":130095,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"66","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4de4b07f02db626cb1","contributors":{"authors":[{"text":"Friedman, Jonathan M. 0000-0002-1329-0663","orcid":"https://orcid.org/0000-0002-1329-0663","contributorId":44495,"corporation":false,"usgs":true,"family":"Friedman","given":"Jonathan","middleInitial":"M.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":322248,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Auble, G.T.","contributorId":19505,"corporation":false,"usgs":true,"family":"Auble","given":"G.T.","email":"","affiliations":[],"preferred":false,"id":322245,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Andrews, E.D.","contributorId":13922,"corporation":false,"usgs":true,"family":"Andrews","given":"E.D.","email":"","affiliations":[],"preferred":false,"id":322243,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kittel, G.","contributorId":36082,"corporation":false,"usgs":true,"family":"Kittel","given":"G.","email":"","affiliations":[],"preferred":false,"id":322247,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Madole, R.F. 0000-0002-9081-570X","orcid":"https://orcid.org/0000-0002-9081-570X","contributorId":34086,"corporation":false,"usgs":true,"family":"Madole","given":"R.F.","affiliations":[],"preferred":false,"id":322246,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Griffin, E.R.","contributorId":15143,"corporation":false,"usgs":true,"family":"Griffin","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":322244,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Allred, Tyler M.","contributorId":173170,"corporation":false,"usgs":false,"family":"Allred","given":"Tyler","email":"","middleInitial":"M.","affiliations":[{"id":27172,"text":"Allred Restoration, Inc., Tremonton, UT","active":true,"usgs":false}],"preferred":false,"id":322249,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":79555,"text":"sir20065224 - 2006 - The Amphibian Research and Monitoring Initiative (ARMI): 5-year report","interactions":[],"lastModifiedDate":"2020-01-26T11:39:48","indexId":"sir20065224","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-5224","title":"The Amphibian Research and Monitoring Initiative (ARMI): 5-year report","docAbstract":"The Amphibian Research and Monitoring Initiative (ARMI) is an innovative, multidisciplinary program that began in 2000 in response to a congressional directive for the Department of the Interior to address the issue of amphibian declines in the United States. ARMI’s formulation was cross-disciplinary, integrating U.S. Geological Survey scientists from Biology, Water, and Geography to develop a course of action (Corn and others, 2005a). The result has been an effective program with diverse, yet complementary, expertise.
\nARMI’s approach to research and monitoring is multiscale. Detailed investigations focus on a few species at selected local sites throughout the country; monitoring addresses a larger number of species over broader areas (typically, National Parks and National Wildlife Refuges); and inventories to document species occurrence are conducted more extensively across the landscape. Where monitoring is conducted, the emphasis is on an ability to draw statistically defensible conclusions about the status of amphibians. To achieve this objective, ARMI has instituted a monitoring response variable that has nationwide applicability. At research sites, ARMI focuses on studying species/environment interactions, determining causes of observed declines, and developing new techniques to sample populations and analyze data. Results from activities at all scales are provided to scientists, land managers, and policymakers, as appropriate.
\nThe ARMI program and the scientists involved contribute significantly to understanding amphibian declines at local, regional, national, and international levels. Within National Parks and National Wildlife Refuges, findings help land managers make decisions applicable to amphibian conservation. For example, the National Park Service (NPS) selected amphibians as a vital sign for several of their monitoring networks, and ARMI scientists provide information and assistance in developing monitoring methods for this NPS effort. At the national level, ARMI has had major exposure at a variety of meetings, including a dedicated symposium at the 2004 joint meetings of the Herpetologists’ League, the American Society of Ichthyologists and Herpetologists, and the Society for the Study of Amphibians and Reptiles. Several principal investigators have brought international exposure to ARMI through venues such as the World Congress of Herpetology in South Africa in 2005 (invited presentation by Dr. Gary Fellers), the Global Amphibian Summit, sponsored by the International Union for Conservation of Nature (IUCN) and Wildlife Conservation International, in Washington, D.C., 2005 (invited participation by Dr. P.S. Corn), and a special issue of the international herpetological journal Alytes focused on ARMI in 2004 (edited by Dr. C.K. Dodd, Jr.).
\nARMI research and monitoring efforts have addressed at least 7 of the 21 Threatened and Endangered Species listed by the U.S. Fish and Wildlife Service (California red-legged frog [Rana draytonii], Chiricahua leopard frog [R. chiricahuensis], arroyo toad [Bufo californicus], dusky gopher frog [Rana sevosa], mountain yellow-legged frog [R. muscosa], flatwoods salamander [Ambystoma cingulatum], and the golden coqui [Eleutherodactylus jasperi]), and 9 additional species of concern recognized by the IUCN. ARMI investigations have addressed time-sensitive research, such as emerging infectious diseases and effects on amphibians related to natural disasters like wildfire, hurricanes, and debris flows, and the effects of more constant, environmental change, like urban expansion, road development, and the use of pesticides.
\nOver the last 5 years, ARMI has partnered with an extensive list of government, academic, and private entities. These partnerships have been fruitful and have assisted ARMI in developing new field protocols and analytic tools, in using and refining emerging technologies to improve accuracy and efficiency of data handling, in conducting amphibian disease, malformation, and environmental effects research, and in implementing a network of monitoring and research sites. Accomplishments from these endeavors include more than 40 publications on amphibian status and trends, nearly 100 publications on amphibian ecology and causes of declines, and over 30 methodological publications. Several databases have emerged as a result of ARMI and its partnerships; one, a digital atlas of ranges for all U.S. amphibian species, was used by the IUCN to display amphibian distribution maps in the Global Amphibian Assessment Project.
\nGiven the scope of ARMI and the panoply of projects, findings have had implications for policy. Investigations that demonstrate amphibian declines or illuminate causes of declines provide valuable information about habitat management, environmental effects, mechanisms for the spread of disease, and human/amphibian interfaces. This information has been made available to land managers, scientists, educators, Congress and other policymakers, and the public. The support afforded ARMI by Congress has been influential in the program’s development and success. The value of ARMI’s efforts will continue to increase as we are able to extend our studies spatially and temporally to answer critical questions with more confidence. We are using ARMI’s resources efficiently and continuing to develop innovative mechanisms for leveraging resources for maximum effectiveness during challenging financial times.
\nThis report is a 5-year retrospective of the structure, methodology, progress, and contributions to the broader scientific community that have resulted from this national USGS program. We evaluate ARMI’s success to date, with regard to the challenges faced by the program and the strengths that have emerged. We chart objectives for the next 5 years that build on current accomplishments, highlight areas meriting further research, and direct efforts to overcome existing weaknesses.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20065224","usgsCitation":"Muths, E., Gallant, A.L., Campbell Grant, E., Battaglin, W.A., Green, D.E., Staiger, J.S., Walls, S., Gunzburger, M.S., and Kearney, R.F., 2006, The Amphibian Research and Monitoring Initiative (ARMI): 5-year report: U.S. Geological Survey Scientific Investigations Report 2006-5224, viii, 77 p., https://doi.org/10.3133/sir20065224.","productDescription":"viii, 77 p.","numberOfPages":"87","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":191954,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20065224.PNG"},{"id":320233,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2006/5224/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad5e4b07f02db68344c","contributors":{"authors":[{"text":"Muths, Erin 0000-0002-5498-3132","orcid":"https://orcid.org/0000-0002-5498-3132","contributorId":14012,"corporation":false,"usgs":true,"family":"Muths","given":"Erin","affiliations":[],"preferred":false,"id":290215,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gallant, Alisa L. 0000-0002-3029-6637 gallant@usgs.gov","orcid":"https://orcid.org/0000-0002-3029-6637","contributorId":2940,"corporation":false,"usgs":true,"family":"Gallant","given":"Alisa","email":"gallant@usgs.gov","middleInitial":"L.","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":290212,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Campbell Grant, Evan H. 0000-0003-4401-6496","orcid":"https://orcid.org/0000-0003-4401-6496","contributorId":23233,"corporation":false,"usgs":true,"family":"Campbell Grant","given":"Evan H.","affiliations":[],"preferred":false,"id":290216,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Battaglin, William A. 0000-0001-7287-7096 wbattagl@usgs.gov","orcid":"https://orcid.org/0000-0001-7287-7096","contributorId":1527,"corporation":false,"usgs":true,"family":"Battaglin","given":"William","email":"wbattagl@usgs.gov","middleInitial":"A.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":true,"id":290211,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Green, David E. 0000-0002-7663-1832 degreen@usgs.gov","orcid":"https://orcid.org/0000-0002-7663-1832","contributorId":3715,"corporation":false,"usgs":true,"family":"Green","given":"David","email":"degreen@usgs.gov","middleInitial":"E.","affiliations":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":true,"id":290213,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Staiger, Jennifer S. jstaiger@usgs.gov","contributorId":5915,"corporation":false,"usgs":true,"family":"Staiger","given":"Jennifer","email":"jstaiger@usgs.gov","middleInitial":"S.","affiliations":[],"preferred":true,"id":290214,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Walls, Susan C. 0000-0001-7391-9155","orcid":"https://orcid.org/0000-0001-7391-9155","contributorId":52284,"corporation":false,"usgs":true,"family":"Walls","given":"Susan C.","affiliations":[],"preferred":false,"id":290218,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Gunzburger, Margaret S.","contributorId":43449,"corporation":false,"usgs":true,"family":"Gunzburger","given":"Margaret","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":290217,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Kearney, Rick F.","contributorId":72472,"corporation":false,"usgs":true,"family":"Kearney","given":"Rick","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":290219,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":77648,"text":"fs20063088 - 2006 - \"HIP\" new software: The Hydroecological Integrity Assessment Process","interactions":[],"lastModifiedDate":"2018-01-01T16:52:26","indexId":"fs20063088","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-3088","title":"\"HIP\" new software: The Hydroecological Integrity Assessment Process","docAbstract":"Managing rivers and streams to maintain healthy aquatic ecosystems is a challenge for resource managers across the country. Demand for competing uses of water resources grows with escalating development, increasing recreational use, and the vagaries of climate and weather. For many species of concern, instream flow and associated water quality are critical for survival. Balancing ecosystem needs with proposed changes in flow regimes requires a process managers can use to determine the ecological and hydrological effects of changes in streamflow.
\nCenter (FORT) have developed the Hydroecological Integrity Assessment Process (HIP) and a suite of software tools for conducting a hydrologic classification of streams, addressing instream flow needs, and assessing past and proposed hydrologic alterations on streamflow and other ecosystem components. The HIP recognizes that streamflow is strongly related to many critical physiochemical components of rivers, such as dissolved oxygen, channel geomorphology, and habitats. Streamflow is considered a “master variable” that limits the distribution, abundance, and diversity of many aquatic plant and animal species.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs20063088","usgsCitation":"Henriksen, J., and Wilson, J.T., 2006, \"HIP\" new software: The Hydroecological Integrity Assessment Process: U.S. Geological Survey Fact Sheet 2006-3088, 2 p., https://doi.org/10.3133/fs20063088.","productDescription":"2 p.","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":121012,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_2006_3088.jpg"},{"id":320221,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2006/3088/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4900e4b0b290850eecc0","contributors":{"authors":[{"text":"Henriksen, Jim","contributorId":23638,"corporation":false,"usgs":true,"family":"Henriksen","given":"Jim","affiliations":[],"preferred":false,"id":288829,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilson, Juliette T.","contributorId":86439,"corporation":false,"usgs":true,"family":"Wilson","given":"Juliette","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":288830,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":77639,"text":"fs20063078 - 2006 - The Conservation Reserve Program: Planting for the future","interactions":[],"lastModifiedDate":"2017-10-20T10:10:16","indexId":"fs20063078","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-3078","title":"The Conservation Reserve Program: Planting for the future","docAbstract":"Proceedings are now available from a scientific and technical forum held to review ongoing and planned research, identify lessons learned, and determine future research needs for the purpose of developing a rigorous scientific basis for future CRP policy discussions.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs20063078","usgsCitation":"Hyberg, S., and Allen, A., 2006, The Conservation Reserve Program: Planting for the future: U.S. Geological Survey Fact Sheet 2006-3078, 1 p., https://doi.org/10.3133/fs20063078.","productDescription":"1 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true},{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":121251,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_2006_3078.jpg"},{"id":8387,"rank":3,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/usgspubs/sir/sir20055145","text":"The Conservation Reserve Program: planting for the future. Proceedings of a National Conference, Fort Collins, Colorado, June 6-9, 2004","linkFileType":{"id":5,"text":"html"},"linkHelpText":"Scientific Investigations Report 2005-5145"},{"id":320230,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2006/3078/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acee4b07f02db67fe8d","contributors":{"authors":[{"text":"Hyberg, Skip","contributorId":90407,"corporation":false,"usgs":true,"family":"Hyberg","given":"Skip","email":"","affiliations":[],"preferred":false,"id":288814,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Allen, Arthur 0000-0002-6061-9396","orcid":"https://orcid.org/0000-0002-6061-9396","contributorId":70870,"corporation":false,"usgs":true,"family":"Allen","given":"Arthur","email":"","affiliations":[],"preferred":false,"id":288813,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":79481,"text":"ofr20061336 - 2006 - History of the Fort Collins Science Center, U.S. Geological Survey","interactions":[],"lastModifiedDate":"2016-04-25T14:08:50","indexId":"ofr20061336","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-1336","title":"History of the Fort Collins Science Center, U.S. Geological Survey","docAbstract":"The U.S. Geological Survey’s Fort Collins Science Center (\"the Center\") has been a nucleus of research, technology development, and associated scientific activities within the Department of the Interior for more than 30 years. The Center’s historical activities are deeply rooted in federal biological resources research and its supporting disciplines, particularly as they relate to the needs of the U.S. Department of the Interior and its resource management agencies. The organizational framework and activities of the Center have changed and adapted over the years in response to shifts in the scientific issues and challenges facing the U.S. Department of the Interior and with the development of new strategies to meet these challenges. Thus, the history of the Center has been dynamic.
\nThe Center has been nested within the U.S. Geological Survey since 1996. From 1993 to 1996 the Center was a major unit of the National Biological Service (named the National Biological Survey at its inception). This was a period of great organizational flux. During that time the Center comprised multiple field stations and science functions that prior to 1993 had been scattered among the U.S. Bureau of Land Management, the U.S. Bureau of Reclamation, the National Park Service, and the U.S. Fish and Wildlife Service. In 1993, certain biological research components of these agencies were assigned to join with the National Ecology Research Center, formerly one of the major research and development hubs of the U.S. Fish and Wildlife Service. This was the year when biological resources research in the U.S. Department of the Interior was consolidated by the Secretary of the Interior, who in an April 1993 memo explaining his intentions wrote, \"Our Department has, without doubt, the best biologists in the world.\" Soon after formation of the new agency, the Center was re-named the Midcontinent Ecological Science Center, reflecting its geographic location within the new Midcontinent administrative region of the National Biological Service (the other three original administrative regions were the eastern, western, and southern). The change in name to the Fort Collins Science Center took place in 2002, soon after the center moved to new facilities on the Colorado State University Natural Resources Research Campus.
\nAt various times during the period when it was part of the National Biological Service (1993–96), the Center served as the administrative and programmatic home base for a wide number of science activities in numerous Western states (table 1). This reflected the previous fragmentation of biological and related science efforts across resource management agencies in the U.S. Department of the Interior. The organization of the 2 Center within the National Biological Service was a manifestation of the desire of the Secretary of the Interior to consolidate its biological science activities in administratively independent entities that would ensure that the science retained its objectivity. Congress later recognized the need to maintain a hierarchical independence between biological science and resource management in the Department. However, Congress also saw that the U.S. Geological Survey, with its long history of objective science support to the nation in geology, water resources, geography, and remote sensing, was a suitable alternative home for these biological science functions. Thus, in 1996 Congress transferred the biological resources functions of the National Biological Service to the U.S. Geological Survey. Detailed overviews and opinions about the history and policy issues surrounding the formation and subsequent fate of the National Biological Service can be found elsewhere (for example Cohn, 1993, 2005; Kaufman, 1993; Kreeger, 1994; Pulliam, 1995, 1998a,b; Reichhardt, 1994; Wagner, 1999)
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20061336","usgsCitation":"O'Shea, T., 2006, History of the Fort Collins Science Center, U.S. Geological Survey: U.S. Geological Survey Open-File Report 2006-1336, iii, 27 p., https://doi.org/10.3133/ofr20061336.","productDescription":"iii, 27 p.","numberOfPages":"30","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":194581,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20061336.PNG"},{"id":320224,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2006/1336/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a54e4b07f02db62bfed","contributors":{"authors":[{"text":"O'Shea, Thomas J. (compiler)","contributorId":61117,"corporation":false,"usgs":true,"family":"O'Shea","given":"Thomas J. (compiler)","affiliations":[],"preferred":false,"id":290014,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1015127,"text":"1015127 - 2006 - Ecological thresholds: The key to successful enviromental management or an important concept with no practical application?","interactions":[],"lastModifiedDate":"2018-02-21T16:16:54","indexId":"1015127","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1478,"text":"Ecosystems","active":true,"publicationSubtype":{"id":10}},"title":"Ecological thresholds: The key to successful enviromental management or an important concept with no practical application?","docAbstract":"An ecological threshold is the point at which there is an abrupt change in an ecosystem quality, property or phenomenon, or where small changes in an environmental driver produce large responses in the ecosystem. Analysis of thresholds is complicated by nonlinear dynamics and by multiple factor controls that operate at diverse spatial and temporal scales. These complexities have challenged the use and utility of threshold concepts in environmental management despite great concern about preventing dramatic state changes in valued ecosystems, the need for determining critical pollutant loads and the ubiquity of other threshold-based environmental problems. In this paper we define the scope of the thresholds concept in ecological science and discuss methods for identifying and investigating thresholds using a variety of examples from terrestrial and aquatic environments, at ecosystem, landscape and regional scales. We end with a discussion of key research needs in this area.
","language":"English","publisher":"Springer","doi":"10.1007/s10021-003-0142-z","usgsCitation":"Groffman, P., Baron, J., Blett, T., Gold, A., Goodman, I., Gunderson, L., Levinson, B., Palmer, M., Paerl, H., Peterson, G., Poff, N., Rejeski, D., Reynolds, J., Turner, M., Weathers, K., and Wiens, J., 2006, Ecological thresholds: The key to successful enviromental management or an important concept with no practical application?: Ecosystems, v. 9, no. 1, p. 1-13, https://doi.org/10.1007/s10021-003-0142-z.","productDescription":"14 p.","startPage":"1","endPage":"13","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":489983,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://digitalcommons.uri.edu/nrs_facpubs/436","text":"External 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T.","contributorId":67828,"corporation":false,"usgs":true,"family":"Blett","given":"T.","email":"","affiliations":[],"preferred":false,"id":322270,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gold, A.J.","contributorId":27822,"corporation":false,"usgs":true,"family":"Gold","given":"A.J.","email":"","affiliations":[],"preferred":false,"id":322263,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Goodman, I.","contributorId":71928,"corporation":false,"usgs":true,"family":"Goodman","given":"I.","email":"","affiliations":[],"preferred":false,"id":322271,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gunderson, L.H.","contributorId":36489,"corporation":false,"usgs":true,"family":"Gunderson","given":"L.H.","email":"","affiliations":[],"preferred":false,"id":322266,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Levinson, B.M.","contributorId":32475,"corporation":false,"usgs":true,"family":"Levinson","given":"B.M.","email":"","affiliations":[],"preferred":false,"id":322265,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Palmer, Margaret A.","contributorId":102429,"corporation":false,"usgs":false,"family":"Palmer","given":"Margaret A.","affiliations":[{"id":13383,"text":"University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, 6 Solomons, Maryland 20688","active":true,"usgs":false}],"preferred":false,"id":322273,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Paerl, H.W.","contributorId":36893,"corporation":false,"usgs":true,"family":"Paerl","given":"H.W.","email":"","affiliations":[],"preferred":false,"id":322267,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Peterson, G.D.","contributorId":102835,"corporation":false,"usgs":true,"family":"Peterson","given":"G.D.","email":"","affiliations":[],"preferred":false,"id":322274,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Poff, N.L.","contributorId":22723,"corporation":false,"usgs":true,"family":"Poff","given":"N.L.","email":"","affiliations":[],"preferred":false,"id":322262,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Rejeski, D.W.","contributorId":13574,"corporation":false,"usgs":true,"family":"Rejeski","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":322259,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Reynolds, J.F.","contributorId":28199,"corporation":false,"usgs":true,"family":"Reynolds","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":322264,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Turner, M.G.","contributorId":43708,"corporation":false,"usgs":true,"family":"Turner","given":"M.G.","email":"","affiliations":[],"preferred":false,"id":322269,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Weathers, K.C.","contributorId":41378,"corporation":false,"usgs":true,"family":"Weathers","given":"K.C.","email":"","affiliations":[],"preferred":false,"id":322268,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Wiens, J.","contributorId":81846,"corporation":false,"usgs":true,"family":"Wiens","given":"J.","affiliations":[],"preferred":false,"id":322272,"contributorType":{"id":1,"text":"Authors"},"rank":16}]}} ,{"id":79482,"text":"ofr20061267 - 2006 - 2005 annual progress report: Elk and bison grazing ecology in the Great Sand Dunes complex of lands","interactions":[],"lastModifiedDate":"2016-04-25T14:15:45","indexId":"ofr20061267","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-1267","title":"2005 annual progress report: Elk and bison grazing ecology in the Great Sand Dunes complex of lands","docAbstract":"In 2000 the U.S. Congress authorized the expansion of the former Great Sand Dunes National Monument by establishing a new Great Sand Dunes National Park and Preserve in its place, and establishing the Baca National Wildlife Refuge. The establishment of Great Sand Dunes National Park and Preserve and the new Baca National Wildlife Refuge in the San Luis Valley (SLV), Colorado was one of the most significant land conservation actions in the western U.S. in recent years. The action was a result of cooperation between the National Park Service (NPS), U.S. Fish and Wildlife Service (USFWS), Bureau of Land Management (BLM), U.S. Forest Service (USDA-FS), and The Nature Conservancy (TNC). The new national park, when fully implemented, will consist of 107,265 acres, the new national preserve 41,872 acres, and the new national wildlife refuge (USFWS lands) 92,180 acres (fig. 1). The area encompassed by this designation protects a number of natural wonders and features including a unique ecosystem of natural sand dunes, the entire watershed of surface and groundwaters that are necessary to preserve and recharge the dunes and adjacent wetlands, a unique stunted forest, and other valuable riparian vegetation communities that support a host of associated wildlife and bird species.
\nWhen the National Park was initially established, there were concerns about overconcentrations and impacts on native plant communities of the unhunted segments of a large and possibly growing elk (Cervus elaphus) population. This led to the designation of the Preserve as a compromise solution, where the elk could be harvested. The Preserve Unit, however, will not address all the ungulate management challenges. In order to reduce the current elk population, harvests of elk may need to be aggressive. But aggressive special hunts of elk to achieve population reductions can result in elk avoidance of certain areas or elk seeking refuge in areas where they cannot be hunted, while removals of whole herd segments and abandonment or alterations of migration routes can occur (Smith and Robbins, 1994; Boyce and others, 1991). Elk may seek refuge from hunting in the newly expanded Park Unit and TNC lands where they might overconcentrate and impact unique vegetation communities. In these sites of refugia, or preferred loafing sites, elk and bison could accelerate a decline in woody riparian shrubs and trees. This decline may also be due to changes in hydrology, climatic, or dunal processes, but ungulate herbivory might exacerbate the effects of those processes.
\nTo address the questions and needs of local resource managers, a multi-agency research project was initiated in 2005 to study the ecology, forage relations, and habitat relations of elk and bison in the Great Sand Dunes–Sangre de Cristo–Baca complex of lands. Meetings and discussions of what this research should include were started in 2001 with representatives from NPS, USFWS, TNC, the Colorado Division of Wildlife (CDOW), and USDA-FS/BLM. The final study plan was successfully funded in 2004 with research scheduled to start in 2005. The research was designed to encompass three major study elements: (1) animal movements and population dynamics, (2) vegetation and nutrient effects from ungulate herbivory, and (3) development of ecological models, using empirical data collected from the first two components, that will include estimates of elk carrying capacity and management scenarios for resource managers.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20061267","usgsCitation":"Schoenecker, K.A., Lubow, B., Zeigenfuss, L., and Mao, J., 2006, 2005 annual progress report: Elk and bison grazing ecology in the Great Sand Dunes complex of lands: U.S. Geological Survey Open-File Report 2006-1267, viii, 45 p., https://doi.org/10.3133/ofr20061267.","productDescription":"viii, 45 p.","numberOfPages":"53","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":190612,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20061267.PNG"},{"id":320220,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2006/1267/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Colorado","otherGeospatial":"Baca National Wildlife Refuge, Great Sand Dunes National Park and Preserve, San Luis Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.86975097656249,\n 37.54893261064109\n ],\n [\n -105.86975097656249,\n 37.913867495923746\n ],\n [\n -105.49072265625,\n 37.913867495923746\n ],\n [\n -105.49072265625,\n 37.54893261064109\n ],\n [\n -105.86975097656249,\n 37.54893261064109\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd491fe4b0b290850eee8b","contributors":{"authors":[{"text":"Schoenecker, Kate A.","contributorId":64343,"corporation":false,"usgs":true,"family":"Schoenecker","given":"Kate","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":290017,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lubow, Bruce C.","contributorId":59520,"corporation":false,"usgs":true,"family":"Lubow","given":"Bruce C.","affiliations":[],"preferred":false,"id":290016,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zeigenfuss, Linda 0000-0002-6700-8563 linda_zeigenfuss@usgs.gov","orcid":"https://orcid.org/0000-0002-6700-8563","contributorId":2079,"corporation":false,"usgs":true,"family":"Zeigenfuss","given":"Linda","email":"linda_zeigenfuss@usgs.gov","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":290015,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mao, Julie","contributorId":74460,"corporation":false,"usgs":true,"family":"Mao","given":"Julie","email":"","affiliations":[],"preferred":false,"id":290018,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":79397,"text":"ofr20061314 - 2006 - Defining ecosystem flow requirements for the Bill Williams River, Arizona","interactions":[],"lastModifiedDate":"2016-04-25T14:25:53","indexId":"ofr20061314","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-1314","title":"Defining ecosystem flow requirements for the Bill Williams River, Arizona","docAbstract":"Alteration of natural river flows resulting from the construction and operation of dams can result in substantial changes to downstream aquatic and bottomland ecosystems and undermine the long-term health of native species and communities (for general review, cf. Ward and Stanford, 1995; Baron and others, 2002; Nilsson and Svedmark, 2002). Increasingly, land and water managers are seeking ways to manage reservoir releases to produce flow regimes that simultaneously meet human needs and maintain the health and sustainability of downstream biotaa.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20061314","usgsCitation":"2006, Defining ecosystem flow requirements for the Bill Williams River, Arizona: U.S. Geological Survey Open-File Report 2006-1314, ix, 135 p., https://doi.org/10.3133/ofr20061314.","productDescription":"ix, 135 p.","numberOfPages":"144","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":190716,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20061314.PNG"},{"id":320227,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2006/1314/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Arizona","otherGeospatial":"Bill Williams River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.9666748046875,\n 34.116352469972746\n ],\n [\n -113.9666748046875,\n 35.34425514918409\n ],\n [\n -112.65380859375,\n 35.34425514918409\n ],\n [\n -112.65380859375,\n 34.116352469972746\n ],\n [\n -113.9666748046875,\n 34.116352469972746\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abbe4b07f02db67253b","contributors":{"editors":[{"text":"Shafroth, Patrick B. 0000-0002-6064-871X shafrothp@usgs.gov","orcid":"https://orcid.org/0000-0002-6064-871X","contributorId":2000,"corporation":false,"usgs":true,"family":"Shafroth","given":"Patrick","email":"shafrothp@usgs.gov","middleInitial":"B.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":627610,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Beauchamp, Vanessa B.","contributorId":39468,"corporation":false,"usgs":true,"family":"Beauchamp","given":"Vanessa","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":627611,"contributorType":{"id":2,"text":"Editors"},"rank":2}]}} ,{"id":76896,"text":"sir20065065 - 2006 - Ecology of bonytail and razorback sucker and the role of off-channel habitats in their recovery","interactions":[],"lastModifiedDate":"2016-05-27T13:29:46","indexId":"sir20065065","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-5065","title":"Ecology of bonytail and razorback sucker and the role of off-channel habitats in their recovery","docAbstract":"The bonytail and razorback sucker are two of four endangered mainstem fishes found in the Colorado River. Unlike the Colorado pikeminnow and humpback chub, wild populations of the bonytail and razorback sucker are either extirpated from the mainstem river or are nearly so. Agencies are aggressively stocking these fish and while repatriated fish spawn, their young are rapidly eaten by introduced predators. A decade of predator removal efforts has proved ineffective in restoring natural recruitment. Today, the presence of these species is totally dependent on stocking, suggesting both species are worse off today than when recovery efforts began nearly two decades ago.
\nIn contrast, both species readily produce young in ponds where nonnative predators are absent. Evidence shows they evolved with the ability to spawn in both flowing and standing water, which suggests isolated oxbow communities may have been an essential feature in their evolution and survival strategy.
\nSustainable populations during the past few decades have only occurred in isolated ponds devoid of predatory nonnative fish. Efforts to force recovery in the main channel river continue to fail due to the presence of nonnative predators that may be economically important recreational species. Off-channel sanctuaries provide research and management opportunities on a scale that are both biologically and economically realistic. Effective management of these species in small habitats appears to be the most logical approach to advance recovery in larger river reaches.
\nThis report presents new findings, updates existing information, and describes what may well represent the only practical approach to these species’ conservation and recovery. Chapter 1 provides an overview of the Colorado River system from its origin to the Gulf of California and includes a description of propagation and stocking programs which have not been described elsewhere. The report also updates what is known or suspected on the life history and ecology of these two endangered fishes. Chapter 2 describes the successful recruitment of both species at an oxbow pond on the Cibola National Wildlife Refuge in Arizona, discusses factors that contribute to completion of the life cycle of both fishes, and provides recommendations for future management of the impoundment. Chapter 3 provides historical evidence that oxbow habitats were formed historically in years of high runoff and the importance of these habitats for survival and evolution of native fishes. It also summarizes key features of habitats that can serve as sanctuaries that enhance early survival of the endangered fishes and allow the fish to complete their entire life cycles.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20065065","usgsCitation":"Mueller, G.A., 2006, Ecology of bonytail and razorback sucker and the role of off-channel habitats in their recovery: U.S. Geological Survey Scientific Investigations Report 2006-5065, viii, 64 p., https://doi.org/10.3133/sir20065065.","productDescription":"viii, 64 p.","numberOfPages":"74","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":194605,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20065065.PNG"},{"id":320226,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2006/5065/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ee4b07f02db627ab0","contributors":{"authors":[{"text":"Mueller, Gordon A.","contributorId":86420,"corporation":false,"usgs":true,"family":"Mueller","given":"Gordon","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":288111,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":79478,"text":"fs20063025 - 2006 - Surveillance for Asian H5N1 avian influenza in the United States","interactions":[],"lastModifiedDate":"2019-03-26T15:06:08","indexId":"fs20063025","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-3025","title":"Surveillance for Asian H5N1 avian influenza in the United States","docAbstract":"Increasing concern over the potential for migratory birds to introduce the Asian H5N1 strain of avian influenza to North America prompted the White House Policy Coordinating Committee for Pandemic Influenza Preparedness to request that the U.S. Departments of Agriculture (USDA) and Interior (DOI) develop a plan for the early detection of highly pathogenic avian influenza (HPAI) in the United States. To promote coordination among wildlife, agriculture, and human health agencies on HPAI surveillance efforts, the two Departments worked with representatives from the U.S. Department of Health and Human Services, the International Association of Fish and Wildlife Agencies, and the Alaska Department of Fish and Game to develop the U.S. Interagency Strategic Plan for Early Detection of Asian H5N1 Highly Pathogenic Avian Influenza in Wild Migratory Birds.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs20063025","usgsCitation":"Ip, S., and Slota, P.G., 2006, Surveillance for Asian H5N1 avian influenza in the United States: U.S. Geological Survey Fact Sheet 2006-3025, 2 p., https://doi.org/10.3133/fs20063025.","productDescription":"2 p.","costCenters":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"links":[{"id":353239,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/2006/3025/coverthb.jpg"},{"id":9022,"rank":299,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2006/3025/fs20063025.pdf","text":"Report","size":"1.19 MB","linkFileType":{"id":1,"text":"pdf"},"description":"FS 2006-3025"}],"contact":"Director, National Wildlife Health Center
U.S. Geological Survey
6006 Schroeder Road
Madison, WI 53711
Experimental observations collected during meteorological field studies conducted by the National Oceanic and Atmospheric Administration near the Russian River of coastal northern California are combined with SSM/I satellite observations offshore to examine the role of landfalling atmospheric rivers in the creation of flooding. While recent studies have documented the characteristics and importance of narrow regions of strong meridional water vapor transport over the eastern Pacific Ocean (recently referred to as atmospheric rivers), this study describes their impact when they strike the U.S. West Coast. A detailed case study is presented, along with an assessment of all 7 floods on the Russian River since the experimental data were first available in October 1997. In all 7 floods, atmospheric river conditions were present and caused heavy rainfall through orographic precipitation. Not only do atmospheric rivers play a crucial role in the global water budget, they can also lead to heavy coastal rainfall and flooding, and thus represent a key phenomenon linkingweather and climate. Copyright 2006 by the American Geophysical Union.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2006GL026689","issn":"00948276","usgsCitation":"Ralph, F., Neiman, P., Wick, G., Gutman, S., Dettinger, M.D., Cayan, D., and White, A., 2006, Flooding on California's Russian River: Role of atmospheric rivers: Geophysical Research Letters, v. 33, no. 13, https://doi.org/10.1029/2006GL026689.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":487562,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006gl026689","text":"Publisher Index Page"},{"id":237259,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210363,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006GL026689"}],"volume":"33","issue":"13","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1188e4b0c8380cd54018","contributors":{"authors":[{"text":"Ralph, F.M.","contributorId":39174,"corporation":false,"usgs":true,"family":"Ralph","given":"F.M.","email":"","affiliations":[],"preferred":false,"id":416406,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Neiman, P.J.","contributorId":14991,"corporation":false,"usgs":true,"family":"Neiman","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":416402,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wick, G.A.","contributorId":22958,"corporation":false,"usgs":true,"family":"Wick","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":416403,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gutman, S.I.","contributorId":25748,"corporation":false,"usgs":true,"family":"Gutman","given":"S.I.","email":"","affiliations":[],"preferred":false,"id":416404,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dettinger, M. D. 0000-0002-7509-7332","orcid":"https://orcid.org/0000-0002-7509-7332","contributorId":93069,"corporation":false,"usgs":false,"family":"Dettinger","given":"M.","middleInitial":"D.","affiliations":[{"id":16196,"text":"Scripps Institution of Oceanography, La Jolla, CA","active":true,"usgs":false}],"preferred":false,"id":416408,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Cayan, D.R.","contributorId":25961,"corporation":false,"usgs":false,"family":"Cayan","given":"D.R.","email":"","affiliations":[{"id":16196,"text":"Scripps Institution of Oceanography, La Jolla, CA","active":true,"usgs":false}],"preferred":false,"id":416405,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"White, A.B.","contributorId":45878,"corporation":false,"usgs":true,"family":"White","given":"A.B.","email":"","affiliations":[],"preferred":false,"id":416407,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70028067,"text":"70028067 - 2006 - Shallow stratigraphy and sedimentation history during high-frequency sea-level changes on the central California shelf","interactions":[],"lastModifiedDate":"2012-03-12T17:20:51","indexId":"70028067","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"Shallow stratigraphy and sedimentation history during high-frequency sea-level changes on the central California shelf","docAbstract":"Analyses of high-resolution seismic-reflection data and sediment cores indicate that an extensive sediment deposit on the central California continental shelf is comprised of several late-Pleistocene to Holocene age facies. Offshore of the littoral zone, in water depths of 30-90 m, a 3-6 m thick veneer of fine sediment referred to as the mid-shelf mudbelt has formed along 50-100 km of the coast. The mudbelt drapes a parasequence characterized by prograding clinoforms that in places overlies a 1-3 m thick basal transgressive lag deposit. These facies overlie a prominent erosional unconformity that extends from the shore to the outer shelf. Eighteen calibrated 14CAMS ages of marine molluscs and terrestrial wood detritus sampled in cores range 15,800 yr BP to modern indicating a postglacial age for these sediments (one >55,000 yr BP represents relict sand). We model accumulation of these facies using (1) the topography of the underlying erosional unconformity interpreted from seismic reflection profiles, (2) observed sediment facies (grain size) distribution across the shelf (a proxy for wave/current sediment partitioning), and published estimates of (3) eustatic sea-level history, and (4) regional tectonics. Our model and data indicate that deposition of the transgressive lag began during early, slow postglacial sea-level rise and that a notable change in depositional environment occurred across an area of more than 200 km2 of the outer shelf likely in response to abrupt drowning during Meltwater Pulse 1B (11,500 yr BP). We propose that rapid progradation of clinoforms may have occurred during transgression because of the unique interaction of modest rates of sediment input and tectonic uplift, variable rates of eustatic sea-level rise and a complex stepped antecedent topography.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Continental Shelf Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.csr.2006.04.001","issn":"02784343","usgsCitation":"Grossman, E.E., Eittreim, S., Field, M., and Wong, F.L., 2006, Shallow stratigraphy and sedimentation history during high-frequency sea-level changes on the central California shelf: Continental Shelf Research, v. 26, no. 10, p. 1217-1239, https://doi.org/10.1016/j.csr.2006.04.001.","startPage":"1217","endPage":"1239","numberOfPages":"23","costCenters":[],"links":[{"id":237223,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210333,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.csr.2006.04.001"}],"volume":"26","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8e3be4b08c986b3187e3","contributors":{"authors":[{"text":"Grossman, E. E.","contributorId":96046,"corporation":false,"usgs":true,"family":"Grossman","given":"E.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":416395,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eittreim, S.L.","contributorId":98730,"corporation":false,"usgs":true,"family":"Eittreim","given":"S.L.","affiliations":[],"preferred":false,"id":416396,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Field, M.E.","contributorId":27052,"corporation":false,"usgs":true,"family":"Field","given":"M.E.","affiliations":[],"preferred":false,"id":416393,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wong, F. L.","contributorId":87515,"corporation":false,"usgs":true,"family":"Wong","given":"F.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":416394,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70028064,"text":"70028064 - 2006 - Comparing mean high water and high water line shorelines: Should prosy-datum offsets be incorporated into shoreline change analysis?","interactions":[],"lastModifiedDate":"2012-03-12T17:20:41","indexId":"70028064","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2220,"text":"Journal of Coastal Research","active":true,"publicationSubtype":{"id":10}},"title":"Comparing mean high water and high water line shorelines: Should prosy-datum offsets be incorporated into shoreline change analysis?","docAbstract":"More than one type of shoreline indicator can be used in shoreline change analyses, and quantifying the effects of this practice on the resulting shoreline change rates is important. Comparison of three high water line (proxy-based) shorelines and a mean high water intercept (datum-based) shoreline collected from simultaneous aerial photographic and lidar surveys of a relatively steep reflective beach (tan ?? = 0.07), which experiences a moderately energetic wave climate (annual average Hs = 1.2 m), reveals an average horizontal offset of 18.8 m between the two types of shoreline indicators. Vertical offsets are also substantial and are correlated with foreshore beach slope and corresponding variations in wave runup. Incorporating the average horizontal offset into both a short-term, endpoint shoreline change analysis and a long-term, linear regression analysis causes rates to be shifted an average of -0.5 m/y and -0.1 m/y, respectively. The rate shift increases with increasing horizontal offset and decreasing measurement intervals and, depending on the rapidity of shoreline change rates, is responsible for varying degrees of analysis error. Our results demonstrate that under many circumstances, the error attributable to proxy-datum offsets is small relative to shoreline change rates and thus not important. Furthermore, we find that when the error associated with proxy-datum offsets is large enough to be important, the shoreline change rates themselves are not likely to be significant. A total water level model reveals that the high water line digitized by three independent coastal labs for this study was generated by a combination of large waves and a high tide several days before the collection of aerial photography. This illustrates the complexity of the high water line as a shoreline indicator and calls into question traditional definitions, which consider the high water line a wetted bound or \"marks left by the previous high tide.\".","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Coastal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2112/04-0401.1","issn":"07490208","usgsCitation":"Moore, L.J., Ruggiero, P., and List, J.H., 2006, Comparing mean high water and high water line shorelines: Should prosy-datum offsets be incorporated into shoreline change analysis?: Journal of Coastal Research, v. 22, no. 4, p. 894-905, https://doi.org/10.2112/04-0401.1.","startPage":"894","endPage":"905","numberOfPages":"12","costCenters":[],"links":[{"id":210280,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2112/04-0401.1"},{"id":237155,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f836e4b0c8380cd4cf4b","contributors":{"authors":[{"text":"Moore, L. J.","contributorId":53132,"corporation":false,"usgs":false,"family":"Moore","given":"L.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":416386,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ruggiero, P.","contributorId":25995,"corporation":false,"usgs":true,"family":"Ruggiero","given":"P.","affiliations":[],"preferred":false,"id":416385,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"List, J. H.","contributorId":70406,"corporation":false,"usgs":true,"family":"List","given":"J.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":416387,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ]}