A review of published research on unpaved road effects on surface-water and shallow ground-water hydrology was undertaken to assist the Baca National Wildlife Refuge, Colorado, in understanding factors potentially influencing refuge ecology. Few studies were found that addressed hydrological effects of roads on a comparable area of shallow slope in a semiarid region. No study dealt with road effects on surface- and ground-water supplies to ephemeral wetlands, which on the refuge are sustained by seasonal snowmelt in neighboring mountains. Road surfaces increase runoff, reduce infiltration, and serve as a sediment source. Roadbeds can interfere with normal surface- and ground-water flows and thereby influence the quantity, timing, and duration of water movement both across landscapes and through the soil. Hydrologic effects can be localized near the road as well as widespread and distant. The number, arrangement, and effectiveness of road-drainage structures (culverts and other devices) largely determine the level of hydrologic alteration produced by a road. Undesirable changes to natural hydrologic patterns can be minimized by considering potential impacts during road design, construction, and maintenance. Road removal as a means to restore desirable hydrologic conditions to landscapes adversely affected by roads has yet to be rigorously evaluated.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071052","collaboration":"Prepared in cooperation with the U.S. Fish and Wildlife Service","usgsCitation":"Andersen, D., 2007, Road impacts on the Baca National Wildlife Refuge, Colorado, with emphasis on effects to surface- and shallow ground-water hydrology - A literature review: U.S. Geological Survey Open-File Report 2007-1052, v, 26 p., https://doi.org/10.3133/ofr20071052.","productDescription":"v, 26 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":192460,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071052.PNG"},{"id":320218,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1052/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Colorado","otherGeospatial":"Baca National Wildlife Refuge","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b28e4b07f02db6b1614","contributors":{"authors":[{"text":"Andersen, Douglas C. doug_andersen@usgs.gov","contributorId":2216,"corporation":false,"usgs":true,"family":"Andersen","given":"Douglas C.","email":"doug_andersen@usgs.gov","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":false,"id":291874,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":80156,"text":"ofr20071057 - 2007 - Herpetofaunal Inventories of the National Parks of South Florida and the Caribbean: Volume IV. Biscayne National Park","interactions":[],"lastModifiedDate":"2012-02-02T00:13:56","indexId":"ofr20071057","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1057","title":"Herpetofaunal Inventories of the National Parks of South Florida and the Caribbean: Volume IV. Biscayne National Park","docAbstract":"Amphibian declines and extinctions have been documented around the world, often in protected natural areas. Concern for this alarming trend has prompted the U.S. Geological Survey and the National Park Service to document all species of amphibians that occur within U.S. National Parks and to search for any signs that amphibians may be declining. This study, an inventory of amphibian species in Biscayne National Park, was conducted during 2002 and 2003. The goals of the project were to create a georeferenced inventory of amphibian species, use new analytical techniques to estimate proportion of sites occupied by each species, look for evidence of known stressors or problems that may lead to amphibian population decline (invasive species, disease, die-offs, and so forth), and to establish a baseline and methodology that could be used for future monitoring efforts.\r\n\r\nFour sampling methods were used to accomplish these goals. Visual encounter surveys and anuran vocalization surveys were conducted at a total of 236 visits to 37 sites in all habitats throughout Biscayne National Park to estimate the proportion of sites or proportion of area occupied (PAO) by each amphibian species in each habitat. More than 100 individuals of 7 amphibian species were detected during standard sampling, and 24 individuals of 6 species of amphibians and 37 individuals of 12 species of reptiles were encountered during opportunistic collections and nighttime road surveys used to augment the visual encounter methods for more rare or cryptic species opportunistically. The software PRESENCE was used to provide PAO estimates for each of the anuran species based on the visual encounter surveys and anuran vocalization data.\r\n\r\nAmphibian species (six native and three non-native) were documented in Biscayne National Park during this project. The proportion of area occupied estimates obtained for the six most common amphibians will serve as a comparative baseline for future monitoring efforts. There were fourteen non-marine reptile species detected during this study. The proportion of area occupied for reptile species was not estimated because there were too few encounters during this study. The methods used in this study are adequate to produce reliable estimates of the proportion of sites occupied by most anuran species. Therefore, future sampling at regular intervals could be a cost-effective way of following amphibian occupancy trends.\r\n\r\nThis study identified some threats to amphibians in Biscayne National Park, especially introduced species including the Cuban treefrog (Osteopilus septentrionalis), the marine or cane toad (Bufo marinus), and the greenhouse frog (Eleutherodactylus planirostris planirostris) that were collectively detected nearly three times as often as native species.","language":"English","publisher":"Geological Survey (U.S.)","doi":"10.3133/ofr20071057","usgsCitation":"Rice, K.G., Waddle, J., Crockett, M.E., Bugbee, C.D., Jeffery, B.M., and Percival, H.F., 2007, Herpetofaunal Inventories of the National Parks of South Florida and the Caribbean: Volume IV. Biscayne National Park: U.S. Geological Survey Open-File Report 2007-1057, 65 p,, https://doi.org/10.3133/ofr20071057.","productDescription":"65 p,","startPage":"0","endPage":"0","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":275,"text":"Florida Integrated Science Center","active":false,"usgs":true}],"links":[{"id":191613,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":10123,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1057/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a8787","contributors":{"authors":[{"text":"Rice, Kenneth G. 0000-0001-8282-1088 krice@usgs.gov","orcid":"https://orcid.org/0000-0001-8282-1088","contributorId":117,"corporation":false,"usgs":true,"family":"Rice","given":"Kenneth","email":"krice@usgs.gov","middleInitial":"G.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":291867,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Waddle, J. Hardin 0000-0003-1940-2133","orcid":"https://orcid.org/0000-0003-1940-2133","contributorId":89982,"corporation":false,"usgs":true,"family":"Waddle","given":"J. Hardin","affiliations":[],"preferred":false,"id":291872,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crockett, Marquette E.","contributorId":70067,"corporation":false,"usgs":true,"family":"Crockett","given":"Marquette","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":291870,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bugbee, Christopher D.","contributorId":73686,"corporation":false,"usgs":true,"family":"Bugbee","given":"Christopher","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":291871,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jeffery, Brian M.","contributorId":16511,"corporation":false,"usgs":false,"family":"Jeffery","given":"Brian","email":"","middleInitial":"M.","affiliations":[{"id":12557,"text":"University of Florida, FLREC","active":true,"usgs":false}],"preferred":false,"id":291869,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Percival, H. Franklin percivalf@usgs.gov","contributorId":2424,"corporation":false,"usgs":true,"family":"Percival","given":"H.","email":"percivalf@usgs.gov","middleInitial":"Franklin","affiliations":[],"preferred":true,"id":291868,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":80149,"text":"ofr20071154 - 2007 - Fort Collins Science Center: 2006 Accomplishments","interactions":[],"lastModifiedDate":"2018-10-25T19:14:54","indexId":"ofr20071154","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1154","title":"Fort Collins Science Center: 2006 Accomplishments","docAbstract":"In Fiscal Year 2006 (FY06), the U.S. Geological Survey (USGS) Fort Collins Science Center (FORT) continued research vital to U.S. Department of the Interior (DOI) science and management needs and associated USGS programmatic goals. FORT work also supported the science needs of other governmental departments and agencies as well as private cooperators. Specifically, FORT scientific research and technical assistance focused on client and partner agency needs and goals in the areas of biological information management, fisheries and aquatic systems, invasive species, status and trends of biological resources, terrestrial ecosystems, and wildlife resources. Highlights of FORT project accomplishments are described below under the USGS science program area with which each task is most closely associated.2 The work of FORT’s five branches (in 2006: Aquatic Systems and Technology Applications, Ecosystem Dynamics, Invasive Species Science, Policy Analysis and Science Assistance, and Species and Habitats of Federal Interest) often involves major partnerships with other agencies or cooperation with other USGS disciplines (Geology, Geography, Water Resources).
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20071154","usgsCitation":"2007, Fort Collins Science Center: 2006 Accomplishments: U.S. Geological Survey Open-File Report 2007-1154, iv, 25 p., https://doi.org/10.3133/ofr20071154.","productDescription":"iv, 25 p.","onlineOnly":"N","additionalOnlineFiles":"N","temporalStart":"2005-10-01","temporalEnd":"2006-09-30","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":194764,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071154.PNG"},{"id":320211,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1154/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e486ee4b07f02db50c7fa","contributors":{"editors":[{"text":"Wilson, Juliette T.","contributorId":15299,"corporation":false,"usgs":true,"family":"Wilson","given":"Juliette T.","affiliations":[],"preferred":false,"id":749933,"contributorType":{"id":2,"text":"Editors"},"rank":1}]}} ,{"id":80581,"text":"ofr20071239 - 2007 - Visitor and community survey results for Prime Hook National Wildlife Refuge: Completion report","interactions":[],"lastModifiedDate":"2016-04-20T17:42:30","indexId":"ofr20071239","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1239","title":"Visitor and community survey results for Prime Hook National Wildlife Refuge: Completion report","docAbstract":"This study was commissioned by the Northeast Region of the U.S. Fish and Wildlife Service (USFWS) in support of the Comprehensive Conservation Planning at Prime Hook National Wildlife Refuge (Prime Hook NWR or Refuge). The National Wildlife Refuge Improvement Act of 1997 (Public Law 105-57, USC668dd) mandates a Comprehensive Conservation Plan (CCP) for every refuge in the system. A refuge CCP outlines goals, objectives, and management strategies for all refuge programs over the next 15 years, while providing opportunities for compatible, wildlifedependent public uses. The plan evaluates refuge wildlife, habitat, land protection, and visitor service priorities during the planning process.
\nThe National Environmental Policy Act (NEPA; Public Law 91-190:852-859.42, U.S.C. and as Amended (P.L. 94-52 and P.L. 94-83) 42 U.S.C. 4321-4347) mandates that the CCP for each refuge must contain an analysis of social and economic conditions (the affected environment) and evaluate social and economic results from likely management scenarios. In addition, public review and comment on alternatives for future management is required. To that end, this research was conducted by the Policy Analysis and Science Assistance Branch (PASA) of the U.S. Geological Survey/Fort Collins Science Center in order to determine how current and proposed CCP planning strategies for Prime Hook NWR could affect:
\nData for this study were collected using a survey administered to visitors to Prime Hook NWR and individuals living in the communities surrounding the Refuge. Surveys were randomly distributed to both consumptive and nonconsumptive use visitors over a one year period (September 2004 to September 2005) to account for seasonal variation in Refuge use. Three hundred thirty-two visitor surveys were returned for a response rate of 80 percent with a confidence interval of ± 5.4. Surveys were also distributed to a stratified random sample of community members in adjacent and surrounding areas (Slaughter Beach, Broadkill Beach, Prime Hook Beach, Milton, Lewes, Milford, and surrounding communities). Four hundred ninety-one surveys from the overall community sample were returned for a response rate of 39 percent with a ± 4.4 confidence interval. Community member results were weighted by U.S. Census Bureau data to correct for age and gender bias, and for community proportionality.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071239","usgsCitation":"Sexton, N.R., Stewart, S., Koontz, L., Ponds, P., and Walters, K.D., 2007, Visitor and community survey results for Prime Hook National Wildlife Refuge: Completion report: U.S. Geological Survey Open-File Report 2007-1239, Report: xii, 63 p.; Appendices A-F, https://doi.org/10.3133/ofr20071239.","productDescription":"Report: xii, 63 p.; Appendices A-F","numberOfPages":"235","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":191509,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071239.PNG"},{"id":320215,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1239/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Delaware","otherGeospatial":"Prime Hook National Wildlife Refuge","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ee4b07f02db5fdb95","contributors":{"authors":[{"text":"Sexton, Natalie R.","contributorId":82750,"corporation":false,"usgs":true,"family":"Sexton","given":"Natalie","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":293013,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stewart, Susan C.","contributorId":48257,"corporation":false,"usgs":true,"family":"Stewart","given":"Susan C.","affiliations":[],"preferred":false,"id":293011,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Koontz, Lynne koontzl@usgs.gov","contributorId":2174,"corporation":false,"usgs":false,"family":"Koontz","given":"Lynne","email":"koontzl@usgs.gov","affiliations":[{"id":7016,"text":"Environmental Quality Division, National Park Service, Fort Collins, Colorado","active":true,"usgs":false}],"preferred":false,"id":293010,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ponds, Phadrea","contributorId":88788,"corporation":false,"usgs":true,"family":"Ponds","given":"Phadrea","affiliations":[],"preferred":false,"id":293014,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Walters, Katherine D.","contributorId":73288,"corporation":false,"usgs":true,"family":"Walters","given":"Katherine","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":293012,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":80161,"text":"ofr20071016 - 2007 - Oregon Spotted Frog (Rana pretiosa) movement and demography at Dilman Meadow: Implications for future monitoring","interactions":[{"subject":{"id":80161,"text":"ofr20071016 - 2007 - Oregon Spotted Frog (Rana pretiosa) movement and demography at Dilman Meadow: Implications for future monitoring","indexId":"ofr20071016","publicationYear":"2007","noYear":false,"title":"Oregon Spotted Frog (Rana pretiosa) movement and demography at Dilman Meadow: Implications for future monitoring"},"predicate":"SUPERSEDED_BY","object":{"id":70032854,"text":"70032854 - 2008 - Demography and movement in a relocated population of Oregon Spotted Frogs (Rana pretiosa): Influence of season and gender","indexId":"70032854","publicationYear":"2008","noYear":false,"title":"Demography and movement in a relocated population of Oregon Spotted Frogs (Rana pretiosa): Influence of season and gender"},"id":1}],"supersededBy":{"id":70032854,"text":"70032854 - 2008 - Demography and movement in a relocated population of Oregon Spotted Frogs (Rana pretiosa): Influence of season and gender","indexId":"70032854","publicationYear":"2008","noYear":false,"title":"Demography and movement in a relocated population of Oregon Spotted Frogs (Rana pretiosa): Influence of season and gender"},"lastModifiedDate":"2017-03-30T16:35:43","indexId":"ofr20071016","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1016","title":"Oregon Spotted Frog (Rana pretiosa) movement and demography at Dilman Meadow: Implications for future monitoring","docAbstract":"From 2001 to 2005, we studied the demography and seasonal movement of Oregon spotted frogs (Rana pretiosa) translocated into created ponds in Dilman Meadow in central Oregon. Our objectives were to inform future monitoring and management at the site, and to elucidate poorly known aspects of the species’ population ecology. Movement rates revealed complementary use of sites seasonally, with one small spring being preferred during winter that was rarely used during the rest of the year. Growth rates were significantly higher in ponds that were not used for breeding, and larger size resulted in significantly higher survival. When variation in survival by size was accounted for there was little variation among ponds in survival. Seasonal estimates of survival were lowest for males during the breeding/post-breeding redistribution period, suggesting a high cost of breeding for males. Overwintering survival for both genders was relatively high. Our study supports others in suggesting Oregon spotted frogs are specific in their overwintering habitat requirements, and that predator-free springs may be of particular value. We suggest that any future monitoring include measures of the rate of pond succession. Demographic monitoring should include metrics of both frog reproduction and survival: counts of egg masses at all ponds during spring, and capture-recapture study of survival in mid and late summer when capture rates are highest. Additional study of early life stages would be particularly useful to broaden our understanding of the species’ ecology. Specifically, adding intensive capture and marking effort after larval transformation in fall would enable a full understanding of the annual life cycle. Complete study of the annual life cycle is needed to isolate the life stages and mechanisms through which Oregon spotted frogs are affected by stressors such as nonnative predators. Dilman Meadow, which lacks many hypothesized stressors, is an important reference for isolating the life stages most responsive to management elsewhere in the species’ range.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071016","collaboration":"Prepared in cooperation with the Sunriver Nature Center","usgsCitation":"Chelgren, N.D., Pearl, C., Bowerman, J., and Adams, M.J., 2007, Oregon Spotted Frog (Rana pretiosa) movement and demography at Dilman Meadow: Implications for future monitoring: U.S. Geological Survey Open-File Report 2007-1016, 27 p., https://doi.org/10.3133/ofr20071016.","productDescription":"27 p.","numberOfPages":"27","onlineOnly":"Y","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":10024,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1016/","linkFileType":{"id":5,"text":"html"}},{"id":9972,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1016/pdf/ofr20071016.pdf","text":"Report","size":"1.2 KB","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2007-1016"},{"id":194829,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2007/1016/coverthb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aeee4b07f02db691246","contributors":{"authors":[{"text":"Chelgren, Nathan D.","contributorId":49062,"corporation":false,"usgs":true,"family":"Chelgren","given":"Nathan","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":291881,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pearl, Christopher A. 0000-0003-2943-7321","orcid":"https://orcid.org/0000-0003-2943-7321","contributorId":84316,"corporation":false,"usgs":true,"family":"Pearl","given":"Christopher A.","affiliations":[{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":false,"id":291883,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bowerman, Jay","contributorId":57024,"corporation":false,"usgs":false,"family":"Bowerman","given":"Jay","email":"","affiliations":[],"preferred":false,"id":291882,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Adams, M. J. 0000-0001-8844-042X mjadams@usgs.gov","orcid":"https://orcid.org/0000-0001-8844-042X","contributorId":3133,"corporation":false,"usgs":false,"family":"Adams","given":"M.","email":"mjadams@usgs.gov","middleInitial":"J.","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":291880,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":80480,"text":"ofr20071274 - 2007 - Aerial population estimates of wild horses (Equus caballus) in the adobe town and salt wells creek herd management areas using an integrated simultaneous double-count and sightability bias correction technique","interactions":[],"lastModifiedDate":"2025-06-05T17:30:05.030317","indexId":"ofr20071274","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1274","displayTitle":"Aerial population estimates of wild horses (Equus caballus) in the adobe town and salt wells creek herd management areas using an integrated simultaneous double-count and sightability bias correction technique","title":"Aerial population estimates of wild horses (Equus caballus) in the adobe town and salt wells creek herd management areas using an integrated simultaneous double-count and sightability bias correction technique","docAbstract":"An aerial survey technique combining simultaneous double-count and sightability bias correction methodologies was used to estimate the population of wild horses inhabiting Adobe Town and Salt Wells Creek Herd Management Areas, Wyoming. Based on 5 surveys over 4 years, we conclude that the technique produced estimates consistent with the known number of horses removed between surveys and an annual population growth rate of 16.2 percent per year. Therefore, evidence from this series of surveys supports the validity of this survey method. Our results also indicate that the ability of aerial observers to see horse groups is very strongly dependent on skill of the individual observer, size of the horse group, and vegetation cover. It is also more modestly dependent on the ruggedness of the terrain and the position of the sun relative to the observer. We further conclude that censuses, or uncorrected raw counts, are inadequate estimates of population size for this herd. Such uncorrected counts were all undercounts in our trials, and varied in magnitude from year to year and observer to observer. As of April 2007, we estimate that the population of the Adobe Town /Salt Wells Creek complex is 906 horses with a 95 percent confidence interval ranging from 857 to 981 horses.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20071274","collaboration":"Prepared in collaboration with the U.S. Bureau of Land Management","usgsCitation":"Lubow, B., and Ransom, J.I., 2007, Aerial population estimates of wild horses (Equus caballus) in the adobe town and salt wells creek herd management areas using an integrated simultaneous double-count and sightability bias correction technique: U.S. Geological Survey Open-File Report 2007-1274, iii, 13 p., https://doi.org/10.3133/ofr20071274.","productDescription":"iii, 13 p.","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":489703,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1274/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":192044,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2007/1274/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b03e4b07f02db698e75","contributors":{"authors":[{"text":"Lubow, Bruce C.","contributorId":59520,"corporation":false,"usgs":true,"family":"Lubow","given":"Bruce C.","affiliations":[],"preferred":false,"id":292699,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ransom, Jason I. 0000-0002-5930-4004","orcid":"https://orcid.org/0000-0002-5930-4004","contributorId":71645,"corporation":false,"usgs":true,"family":"Ransom","given":"Jason","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":292700,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":80482,"text":"ofr20071282 - 2007 - Simulation of flow and habitat conditions under ice, Cache la Poudre River - January 2006","interactions":[],"lastModifiedDate":"2016-05-27T13:37:32","indexId":"ofr20071282","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1282","title":"Simulation of flow and habitat conditions under ice, Cache la Poudre River - January 2006","docAbstract":"The U.S. Forest Service authorizes the occupancy and use of Forest Service lands by various projects, including water storage facilities, under the Federal Land Policy and Management Act. Federal Land Policy and Management Act permits can be renewed at the end of their term. The U.S. Forest Service analyzes the environmental effects for the initial issuance or renewal of a permit and the terms and conditions (for example, mitigations plans) contained in the permit for the facilities. The U.S. Forest Service is preparing an environmental impact statement (EIS) to determine the conditions for the occupancy and use for Long Draw Reservoir on National Forest System administered lands. The scope of the EIS includes evaluating current operations and effects to fish habitat of an ongoing winter release of 0.283 m3 /s (10 ft3 /s) from headwater reservoirs as part of a previously issued permit. The field conditions observed during this study included this release.
\nThe U.S. Forest Service entered into an interagency agreement (05-IA-11021000-030) with the U.S. Geological Survey (USGS) Fort Collins Science Center to perform analysis of fish habitat and flow relationships in the Cache la Poudre River during winter ice-over conditions using a twodimensional hydrodynamic model. The U.S. Forest Service selected the Fort Collins Science Center for this task because of their expertise in developing two-dimensional hydraulic models for habitat modeling applications. This report transmits model results to the U.S. Forest Service to analyze the effects of alternative flow scenarios at a site on the mainstem Cache la Poudre River in Larimer County, Colorado, near Kinikinik (40° 42' 44.16\" N. lat, 105° 44' 30.70\" W. log), as shown in figure 1. It will be used in pending environmental analyses and decisions for the occupancy and use of the Arapaho-Roosevelt National Forest by water storage facilities.
\nThe water management scenarios of interest in this study are related to releasing water from Chambers and Barnes Meadows Reservoirs, based on the assumption that winter flow augmentation can increase potential fish habitat. Figure 2 shows the relationship between Chambers, Barnes Meadows, and Long Draw Reservoirs. At the time this study was proposed, existing flow simulation results showed that the channel constraints imposed by existing artificial low-head dikes would have little or no effect on the hydrodynamics of the river at the low flow levels that were to be evaluated. The Kinikinik study site contains deep pools, riffles, and runs. This diversity of habitat types made it ideal for assessing the effects of altered flow on fish habitat under ice in the main stem Cache la Poudre River. Thus, the Kinikinik site was selected for this study of winter habitat conditions.
\nThe preexisting topographic and hydrologic data collected at this site enabled data collection efforts for this study to focus on describing streamflow and ice cover during the winter months. A two-dimensional hydrodynamic model, River2D (Steffler and Blackburn, 2002), was used to simulate flow conditions under the ice cover that was observed January 24, 2006.
\nThe objectives of this study are (1) to describe the extent and thickness of ice cover, (2) simulate depth and velocity under ice at the study site for observed and reduced flows, and (3) to quantify fish habitat in this portion of the mainstem Cache la Poudre River for the current winter release schedule as well as for similar conditions without the 0.283 m3/s winter release.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071282","usgsCitation":"Waddle, T., 2007, Simulation of flow and habitat conditions under ice, Cache la Poudre River - January 2006: U.S. Geological Survey Open-File Report 2007-1282, v, 37 p., https://doi.org/10.3133/ofr20071282.","productDescription":"v, 37 p.","numberOfPages":"42","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":195516,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071282.PNG"},{"id":320217,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1282/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Colorado","otherGeospatial":"Cache la Poudre River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.90202331542969,\n 40.52267294048898\n ],\n [\n -105.90202331542969,\n 40.71863980562837\n ],\n [\n -105.42411804199219,\n 40.71863980562837\n ],\n [\n -105.42411804199219,\n 40.52267294048898\n ],\n [\n -105.90202331542969,\n 40.52267294048898\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f8e4b07f02db5f2f39","contributors":{"authors":[{"text":"Waddle, Terry","contributorId":47848,"corporation":false,"usgs":true,"family":"Waddle","given":"Terry","affiliations":[],"preferred":false,"id":292704,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":80849,"text":"ofr20071266 - 2007 - Field-based evaluations of sampling techniques to support long-term monitoring of riparian ecosystems along wadeable streams on the Colorado Plateau","interactions":[],"lastModifiedDate":"2016-05-26T16:06:14","indexId":"ofr20071266","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1266","title":"Field-based evaluations of sampling techniques to support long-term monitoring of riparian ecosystems along wadeable streams on the Colorado Plateau","docAbstract":"To better plan for and implement long-term ecological monitoring, we measured riparian vegetation and fluvial geomorphic features at pilot study sites on four wadeable perennial stream reaches, representative of drainages across the Colorado Plateau. Our primary objectives were to (1) collect field data, (2) evaluate the efficiency and effectiveness of various ecological measures and measurement techniques for riparian ecosystems, and (3) use field-based sampling to inform and refine the development of standard operating procedures for use in implementing integrated, long-term monitoring of riparian ecosystems. Ultimately, this work was aimed at providing NPS staff with some of the information and methods needed to design and implement long-term monitoring of NPS riparian resources, which is both relevant to management, and fully operational within institutional resource constraints.
\nOur results suggest that selecting sampling reaches and establishing a sampling frame of 11 transects, across a range of stream types, is feasible given a limited set of decision rules. A distinctive feature of richness across all sites was the high percentage of rare species, defined here as species having a single occurrence at a site. Rare species represented from 33 percent to 47 percent of the species total across the four pilot sites. Our data show that the two smallest quadrat sizes, 0.01 m2 and 0.1 m2 , rarely had any species that occurred in the desired frequency range and can be omitted from the monitoring protocol. Few species fell within the 30–70 percent range in the 1-m2 quadrats, but this quadrat size appears to be useful at the Tsaile Creek (CACH) site. We recommend continuing to collect information at the 1-m2 scale and reevaluating its usefulness after more data are available from different types of sites. The 10-m2 quadrat is adequate for monitoring changes in frequencies of very common species at all sites. Based on pilot study results, we conclude that at sites with low total species numbers (< 60 species), 40–60, 10-m2 quadrats, would be sufficient to characterize overall species diversity for relatively common species. At sites with higher total numbers of species (> 100), 60–80, 10-m2 quadrats would be required to characterize overall species diversity. Rare species of interest should be monitored using alternative approaches, such as a site inventory and/or mapping (see Elzinga and others, 1998). A large number of the systematically placed 10-m2 quadrats span two or more geomorphic surfaces, especially adjacent to the channel. This makes resolution of species affinities with distinct geomorphic landforms difficult. Thus, we provide an amendment to improve characterization of herbaceous and shrub species on narrow, near-channel surfaces by sampling additional 0.5-m by 1-m quadrats on those surfaces. It appears that for sites in narrow valley settings where riparian zones average less than approximately 40 m, the number of 10-m2 quadrats systematically placed on 11 transects will not provide shrub cover estimates at 20 percent precision. In such cases, additional sample reaches should be added in order to attain a minimum of 130 to 140 10-m2 shrub quadrats.
\nThe line-intercept technique can provide a relatively rapid, reach-scale quantification of proportional cover for woody vegetation and geomorphic surface types and that variance in these measures stabilizes by the eighth or ninth transect sampled. An overlay of the distribution of geomorphic surface data derived from line-intercept sampling on topographic survey information indicates that delineation of geomorphic surfaces could be done in conjunction with the topographic survey of each transect, obviating the need to record surface breaks using the line intercept. To include geomorphic surface identifications with the topographic survey, surface breaks and transitional surfaces should be included and identified in the survey, in addition to systematically placed survey points.
\nCompared to 5-m by 20-m tree quadrats, belt transects were shown to provide similar estimates of stand structure (stem density and stand basal area) in less than 30 percent of the time. Further, for the streams sampled, there were no statistically significant differences in stem density and basal area estimates between 10-m and 20-m belt transects and the smaller belts took approximately half the time to sample. There was, however, high variance associated with estimates of stand structure for infrequently occurring stems, such as large, relict or legacy riparian trees. Legacy riparian trees occurred in limited numbers at all sites sampled. A reachscale population census of these trees indicated that the 10-m belt transects tended to underestimate both stem density and basal area for these riparian forest elements and that a complete reach-scale census of legacy trees averaged less than one hour per site.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071266","collaboration":"Prepared in cooperation with the Northern and Southern Colorado Plateau Park Networks","usgsCitation":"Scott, M.L., and Reynolds, E.W., 2007, Field-based evaluations of sampling techniques to support long-term monitoring of riparian ecosystems along wadeable streams on the Colorado Plateau: U.S. Geological Survey Open-File Report 2007-1266, iv, 57 p., https://doi.org/10.3133/ofr20071266.","productDescription":"iv, 57 p.","numberOfPages":"63","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":192352,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071266.PNG"},{"id":320212,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1266/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","otherGeospatial":"Colorado Plateau","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e48b1e4b07f02db530787","contributors":{"authors":[{"text":"Scott, Michael L. scottm@usgs.gov","contributorId":1169,"corporation":false,"usgs":true,"family":"Scott","given":"Michael","email":"scottm@usgs.gov","middleInitial":"L.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":293687,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reynolds, Elizabeth W.","contributorId":89986,"corporation":false,"usgs":true,"family":"Reynolds","given":"Elizabeth","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":293688,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":80809,"text":"ofr20071353 - 2007 - Environmental effects of off-highway vehicles on Bureau of Land Management lands: A literature synthesis, annotated bibliographies, extensive bibliographies, and internet resources","interactions":[],"lastModifiedDate":"2016-05-27T13:15:35","indexId":"ofr20071353","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1353","title":"Environmental effects of off-highway vehicles on Bureau of Land Management lands: A literature synthesis, annotated bibliographies, extensive bibliographies, and internet resources","docAbstract":"This report and its associated appendixes compile and synthesize the results of a comprehensive literature and Internet search conducted in May 2006. The literature search was undertaken to uncover information regarding the effects of off-highway vehicle (OHV) use on land health, or “natural resource attributes,” and included databases archiving information from before OHVs came into existence to May 2006. Information pertaining to socioeconomic implications of OHV activities is included as well. The literature and Internet searches yielded approximately 700 peer-reviewed papers, magazine articles, agency and non-governmental reports, and internet websites regarding effects of OHV use as they relate to the Bureau of Land Management’s (BLM) standards of land health. Discussions regarding OHV effects are followed by brief syntheses of potential indicators of OHV effects, as well as OHV-effects mitigation, site-restoration techniques, and research needs.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071353","usgsCitation":"Ouren, D.S., Haas, C., Melcher, C.P., Stewart, S., Ponds, P.D., Sexton, N.R., Burris, L., Fancher, T.S., and Bowen, Z.H., 2007, Environmental effects of off-highway vehicles on Bureau of Land Management lands: A literature synthesis, annotated bibliographies, extensive bibliographies, and internet resources: U.S. Geological Survey Open-File Report 2007-1353, xvi, 225 p., https://doi.org/10.3133/ofr20071353.","productDescription":"xvi, 225 p.","numberOfPages":"241","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":193190,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071353.PNG"},{"id":320214,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1353/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a14e4b07f02db60255b","contributors":{"authors":[{"text":"Ouren, Douglas S. ourend@usgs.gov","contributorId":1931,"corporation":false,"usgs":true,"family":"Ouren","given":"Douglas","email":"ourend@usgs.gov","middleInitial":"S.","affiliations":[],"preferred":true,"id":293625,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haas, Christopher","contributorId":74465,"corporation":false,"usgs":true,"family":"Haas","given":"Christopher","affiliations":[],"preferred":false,"id":293631,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Melcher, Cynthia P. 0000-0002-8044-9689 melcherc@usgs.gov","orcid":"https://orcid.org/0000-0002-8044-9689","contributorId":5094,"corporation":false,"usgs":true,"family":"Melcher","given":"Cynthia","email":"melcherc@usgs.gov","middleInitial":"P.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":293627,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stewart, Susan C.","contributorId":48257,"corporation":false,"usgs":true,"family":"Stewart","given":"Susan C.","affiliations":[],"preferred":false,"id":293628,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ponds, Phadrea D.","contributorId":65156,"corporation":false,"usgs":true,"family":"Ponds","given":"Phadrea","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":293630,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Sexton, Natalie R.","contributorId":82750,"corporation":false,"usgs":true,"family":"Sexton","given":"Natalie","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":293632,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Burris, Lucy","contributorId":49468,"corporation":false,"usgs":true,"family":"Burris","given":"Lucy","affiliations":[],"preferred":false,"id":293629,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Fancher, Tammy S. 0000-0002-1318-3614 fanchert@usgs.gov","orcid":"https://orcid.org/0000-0002-1318-3614","contributorId":3788,"corporation":false,"usgs":true,"family":"Fancher","given":"Tammy","email":"fanchert@usgs.gov","middleInitial":"S.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":293626,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Bowen, Zachary H. 0000-0002-8656-1831 bowenz@usgs.gov","orcid":"https://orcid.org/0000-0002-8656-1831","contributorId":821,"corporation":false,"usgs":true,"family":"Bowen","given":"Zachary","email":"bowenz@usgs.gov","middleInitial":"H.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":293624,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":80804,"text":"ofr20071423 - 2007 - Preliminary testing of the role of exercise and predator recognition for bonytail and razorback sucker","interactions":[],"lastModifiedDate":"2017-12-19T19:44:26","indexId":"ofr20071423","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1423","title":"Preliminary testing of the role of exercise and predator recognition for bonytail and razorback sucker","docAbstract":"Hatchery-reared juvenile, <25-cm TL (total length), razorback suckers appeared curious and showed no sign of predator avoidance when initially placed with large (>45-cm TL) flathead catfish. Predator-naïve juveniles (20- to 25-cm TL) exhibited no discernable preference when provided areas with and without (52 percent and 48 percent, n = 16 observations; 46 percent and 54 percent, n = 20 observations) large flathead catfish. However, once predation occurred, use of predator-free areas nearly doubled in two trials (36 percent and 64 percent, n = 50 observations; 33 percent and 67 percent, n = 12 observations). A more stringent test examining available area indicated predator-savvy razorback suckers used predator-free areas (88 percent, n = 21) illustrating predator avoidance was a learned behavior.
\nRazorback suckers exercised (treatment) in water current (<0.3 m/s) for 10 weeks exhibited greater swimming stamina than unexercised, control fish. When exercised and unexercised razorback suckers were placed together with large predators in 2006, treatment fish had significantly fewer (n = 9, z = 1.69, p = 0.046) mortalities than control fish, suggesting increased stamina improved predator escape skills. Predator/prey tests comparing razorback suckers that had been previously exposed to a predation event with control fish, found treatment fish also had significantly fewer losses than predatornaïve fish (p = 0.017). Similar tests exposing predator-savvy and predator-naïve bonytail with largemouth bass showed a similar trend; predator-savvy bonytail suffered 38 percent fewer losses than control fish. However, there was not a statistically significant difference between the test groups (p = 0.143) due to small sample size. All exercise and predator exposure trials increased the survival rate of razorback sucker and bonytail compared to untreated counterparts.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071423","collaboration":"Prepared in cooperation with the U.S. Fish and Wildlife Service, Willow Beach National Fish Hatchery","usgsCitation":"Mueller, G.A., Carpenter, J., Krapfel, R., and Figiel, C., 2007, Preliminary testing of the role of exercise and predator recognition for bonytail and razorback sucker: U.S. Geological Survey Open-File Report 2007-1423, v, 37 p., https://doi.org/10.3133/ofr20071423.","productDescription":"v, 37 p.","numberOfPages":"42","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":193133,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071423.PNG"},{"id":321210,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1423/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aaee4b07f02db66c872","contributors":{"authors":[{"text":"Mueller, Gordon A.","contributorId":86420,"corporation":false,"usgs":true,"family":"Mueller","given":"Gordon","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":293613,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carpenter, Jeanette","contributorId":41513,"corporation":false,"usgs":true,"family":"Carpenter","given":"Jeanette","email":"","affiliations":[],"preferred":false,"id":293610,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Krapfel, Robert","contributorId":49057,"corporation":false,"usgs":true,"family":"Krapfel","given":"Robert","email":"","affiliations":[],"preferred":false,"id":293611,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Figiel, Chester","contributorId":65939,"corporation":false,"usgs":true,"family":"Figiel","given":"Chester","affiliations":[],"preferred":false,"id":293612,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":80451,"text":"ofr20071245 - 2007 - Understanding knowledge and perceptions of bats among residents of Fort Collins, Colorado","interactions":[],"lastModifiedDate":"2016-04-20T17:24:03","indexId":"ofr20071245","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1245","title":"Understanding knowledge and perceptions of bats among residents of Fort Collins, Colorado","docAbstract":"As regional urbanization increases in Colorado, so do interactions between humans and wildlife. Where previous habitat has been reduced due to urbanization and development, a few bat species that easily adapt to new environments now roost in homes and buildings (Kunz and Reynolds, 2003). Bats frequently serve as reservoirs of disease that have potential health consequences for humans and other mammals (Messenger and others, 2003). As bat use of buildings becomes more frequent, the incidences of bat/human contact and the risk of spreading disease also increase.
\nIn Colorado, rabies is most common in the big brown bat (Eptesicus fuscus) Pape and others, 1999), the most ubiquitous species of urban-dwelling bat in the United States (Barbour and Davis, 1969) and the most common species submitted for rabies testing in Colorado (Pape and others, 1999). An in-depth knowledge of the big brown bat - including its ecology, habitat and movements, and aspects of disease transmission - and of its interactions with humans is essential for making informed management decisions regarding this species. To balance the competing priorities of species preservation and public safety, natural resource managers and public health professionals must be able to accurately estimate citizens' knowledge, perceptions, and perceived risks regarding the bat species that use human dwellings and harbor diseases potentially dangerous to humans.
\nA recently completed five-year ecological study (2001-2005) on bats inhabiting buildings in Fort Collins, Colo., has provided much information on the basic epidemiology of rabies and on the ecology of the local bat population (Davis, Rudd, and Bowen, 2007; Ellison and others, 2007; Neubaum, Douglas, and others, in press; Neubaum, O'Shea, and Wilson, 2006; Neubaum, Wilson, and O'Shea, 2007; O'Shea, Ellison, and Stanley, 2004; Pearce and O'Shea, 2007; Pearce and others, in press; Shankar and others, 2004; Shankar and others, 2005; Wimsatt and others 2005). Research investigating the human dimensions of bats and bat/rabies relationships, however, has been very limited (Gibbins and others, 2002; Liesener and others, 2006). Herein, we report the results of a study to evaluate perceptions and knowledge of bats and rabies among residents of Fort Collins, Colo. The study resulted from collaborations between U.S. Geological Survey (USGS) bat ecologists of the Trust Species and Habitats branch, and social scientists of the Policy Analysis and Science Assistance branch, both of the USGS Fort Collins Science Center (FORT).
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071245","usgsCitation":"Sexton, N.R., and Stewart, S., 2007, Understanding knowledge and perceptions of bats among residents of Fort Collins, Colorado: U.S. Geological Survey Open-File Report 2007-1245, v, 22 p., https://doi.org/10.3133/ofr20071245.","productDescription":"v, 22 p.","numberOfPages":"27","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":190983,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071245.PNG"},{"id":320216,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1245/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7a2ee4b0b2908510d524","contributors":{"authors":[{"text":"Sexton, Natalie R.","contributorId":82750,"corporation":false,"usgs":true,"family":"Sexton","given":"Natalie","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":292604,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stewart, Susan C.","contributorId":48257,"corporation":false,"usgs":true,"family":"Stewart","given":"Susan C.","affiliations":[],"preferred":false,"id":292603,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70156270,"text":"70156270 - 2007 - A comparison of macroinvertebrate and habitat methods of data collection in the Little Colorado River Watershed, Arizona 2007","interactions":[],"lastModifiedDate":"2022-11-10T15:11:20.909057","indexId":"70156270","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":128,"text":"Open-File Report","active":false,"publicationSubtype":{"id":2}},"seriesNumber":"10-05","title":"A comparison of macroinvertebrate and habitat methods of data collection in the Little Colorado River Watershed, Arizona 2007","docAbstract":"The Arizona Department of Environmental Quality (ADEQ) and the U.S. Environmental Protection Agency (USEPA) Ecological Monitoring and Assessment Program (EMAP), use different field methods for collecting macroinvertebrate samples and habitat data for bioassessment purposes. Arizona’s Biocriteria index was developed using a riffle habitat sampling methodology, whereas the EMAP method employs a multi-habitat sampling protocol. There was a need to demonstrate comparability of these different bioassessment methodologies to allow use of the EMAP multi-habitat protocol for both statewide probabilistic assessments for integration of the EMAP data into the national (305b) assessment and for targeted in-state bioassessments for 303d determinations of standards violations and impaired aquatic life conditions. The purpose of this study was to evaluate whether the two methods yield similar bioassessment results, such that the data could be used interchangeably in water quality assessments. In this Regional EMAP grant funded project, a probabilistic survey of 30 sites in the Little Colorado River basin was conducted in the spring of 2007. Macroinvertebrate and habitat data were collected using both ADEQ and EMAP sampling methods, from adjacent reaches within these stream channels.
All analyses indicated that the two macroinvertebrate sampling methods were significantly correlated. ADEQ and EMAP samples were classified into the same scoring categories (meeting, inconclusive, violating the biocriteria standard) 82% of the time. When the ADEQ-IBI was applied to both the ADEQ and EMAP taxa lists, the resulting IBI scores were significantly correlated (r=0.91), even though only 4 of the 7 metrics in the IBI were significantly correlated. The IBI scores from both methods were significantly correlated to the percent of riffle habitat, even though the average percent riffle habitat was only 30% of the stream reach. Multivariate analyses found that the percent riffle was an important attribute for both datasets in classifying IBI scores into assessment categories.
Habitat measurements generated from EMAP and ADEQ methods were also significantly correlated; 13 of 16 habitat measures were significantly correlated (p<0.01). The visual-based percentage estimates of percent riffle and pool habitats, vegetative cover and percent canopy cover, and substrate measurements of percent fine substrate and embeddedness were all remarkably similar, given the different field methods used. A multivariate analysis identified substrate and flow conditions, as well as canopy cover as important combinations of habitat attributes affecting both IBI scores. These results indicate that similar habitat measures can be obtained using two different field sampling protocols. In addition, similar combinations of these habitat parameters were important to macroinvertebrate community condition in multivariate analyses of both ADEQ and EMAP datasets.
These results indicate the two sampling methods for macroinvertebrates and habitat data were very similar in terms of bioassessment results and stressors. While the bioassessment category was not identical for all sites, overall the assessments were significantly correlated, providing similar bioassessment results for the cold water streams used in this study. The findings of this study indicate that ADEQ can utilize either a riffle-based sampling methodology or a multi-habitat sampling approach in cold water streams as both yield similar results relative to the macroinvertebrate assemblage. These results will allow for use of either macroinvertebrate dataset to determine water quality standards compliance with the ADEQ Indexes of Biological Integrity, for which threshold values were just recently placed into the Arizona Surface Water Quality Standards. While this survey did not include warm water desert streams of Arizona, we would predict that EMAP and ADEQ sampling methodologies would provide similar bioassessment results and would not be significantly different, as we have found that the percent riffle habitat in cold and warm water perennial, wadeable streams is not significantly different. However, a comparison study of sampling methodologies in warm water streams should be conducted to confirm the predicted similarity of bioassessment results. ADEQ will continue to implement a monitoring strategy that includes probabilistic monitoring for a statewide ecological assessment of stream conditions. Conclusions from this study will guide decisions regarding the most appropriate sampling methods for future probabilistic monitoring sample plans.
","language":"English","publisher":"Arizona Department of Environmental Quality","usgsCitation":"Spindler, P., and Paretti, N.V., 2007, A comparison of macroinvertebrate and habitat methods of data collection in the Little Colorado River Watershed, Arizona 2007: Open-File Report 10-05, 44 p.","productDescription":"44 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"links":[{"id":409294,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://azdeq.gov/surface-water-reports"},{"id":306884,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","otherGeospatial":"Little Colorado River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -109.05225085860557,\n 33.997147907235785\n ],\n [\n -109.04106100464412,\n 35.15461273818636\n ],\n [\n -112.02896638603738,\n 35.17081103556828\n ],\n [\n -112.02896638603738,\n 35.05951329223615\n ],\n [\n -112.18135500293924,\n 35.01940890226042\n ],\n [\n -112.11604559569567,\n 34.930217592804965\n ],\n [\n -112.18135500293924,\n 34.76942868845617\n ],\n [\n -112.14325784871377,\n 34.675490175745026\n ],\n [\n -111.83303816430666,\n 34.39303515518253\n ],\n [\n -111.75684385585603,\n 34.410997280051035\n ],\n [\n -111.55003073291795,\n 34.42895554846932\n ],\n [\n -111.37587231360197,\n 34.35709933984734\n ],\n [\n -111.29423555454736,\n 34.42446634295791\n ],\n [\n -111.14728938824946,\n 34.384052646872874\n ],\n [\n -110.91870646289696,\n 34.29417457634274\n ],\n [\n -110.74454804358068,\n 34.177189196638395\n ],\n [\n -110.5921594266791,\n 34.16818359070621\n ],\n [\n -110.37990385313734,\n 34.01494136859705\n ],\n [\n -110.3418066989122,\n 33.8885337937307\n ],\n [\n -110.17309073019959,\n 33.90660351226566\n ],\n [\n -109.83565879277435,\n 33.94273145971013\n ],\n [\n -109.69959752768384,\n 33.93821630426183\n ],\n [\n -109.5689787131967,\n 33.96078968665205\n ],\n [\n -109.53632400957491,\n 33.59889828847642\n ],\n [\n -109.3896827960308,\n 33.56287969227705\n ],\n [\n -109.2155243767145,\n 33.71693475565631\n ],\n [\n -109.18286967309271,\n 33.93395436276049\n ],\n [\n -109.05225085860557,\n 33.997147907235785\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57fe8b41e4b0824b2d14a9d8","contributors":{"authors":[{"text":"Spindler, Patrice","contributorId":146624,"corporation":false,"usgs":false,"family":"Spindler","given":"Patrice","email":"","affiliations":[],"preferred":false,"id":568470,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Paretti, Nick V.","contributorId":146625,"corporation":false,"usgs":false,"family":"Paretti","given":"Nick","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":568471,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":86139,"text":"ofr20071425 - 2007 - Increase in nuisance blooms and geographic expansion of the freshwater diatom Didymosphenia geminata","interactions":[],"lastModifiedDate":"2016-05-27T12:54:14","indexId":"ofr20071425","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1425","title":"Increase in nuisance blooms and geographic expansion of the freshwater diatom Didymosphenia geminata","docAbstract":"The diatom Didymosphenia geminata (Lyngbye) Schmidt is emerging as an organism with an extraordinary capacity to impact stream ecosystems on a global scale. In recent years, streams in New Zealand, North America, Europe, and Asia have been colonized by unprecedented masses of “didymo” and its extracellular stalks (fig. 1). This diatom is able to dominate stream surfaces by covering up to 100 percent of substrate with thicknesses of greater than 20 cm, greatly altering physical and biological conditions within streams. This species is expanding its geographic range in North America and the rate that nuisance blooms are reported by the public and local media are increasing, yet little scientific investigation of the phenomenon in North America has been initiated.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071425","collaboration":"Prepared in cooperation with the Federation of Fly Fishers","usgsCitation":"Spaulding, S., and Elwell, E., 2007, Increase in nuisance blooms and geographic expansion of the freshwater diatom Didymosphenia geminata: U.S. Geological Survey Open-File Report 2007-1425, iv, 38 p., https://doi.org/10.3133/ofr20071425.","productDescription":"iv, 38 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":147203,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071425.PNG"},{"id":320219,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1425/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e0e4b07f02db5e449c","contributors":{"authors":[{"text":"Spaulding, S. A. 0000-0002-9787-7743","orcid":"https://orcid.org/0000-0002-9787-7743","contributorId":74390,"corporation":false,"usgs":true,"family":"Spaulding","given":"S. A.","affiliations":[],"preferred":false,"id":296928,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Elwell, E.","contributorId":169676,"corporation":false,"usgs":false,"family":"Elwell","given":"E.","email":"","affiliations":[],"preferred":false,"id":296929,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":80808,"text":"ofr20071361 - 2007 - Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative","interactions":[],"lastModifiedDate":"2018-01-01T16:59:36","indexId":"ofr20071361","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1361","title":"Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative","docAbstract":"Understanding the factors affecting migratory bird and bat populations during all three phases of their life cycle—breeding, nonbreeding, and migration—is critical to species conservation planning. This includes the need for information about these species’ responses to natural challenges, as well as information about the effects of human activities and structures. Habitats and other resources critical to migrants during passage and stopover are being destroyed, degraded, and threatened by human activities. Birds and bats are also uniquely susceptible to human use of the airspace. Wind turbines, communication and power transmission towers, and other tall structures, known to cause bird and bat mortality, are being erected or proposed in increasing numbers across the country. In addition, the potential for bird/aircraft collisions poses human safety threats. Management and regulatory agencies, conservation organizations, and industry currently lack the information they need to meet their missions and statutory responsibilities. The biological data available from various radar technologies offer a unique opportunity to learn more about the spatiotemporal distribution patterns, flight characteristics, and habitat use of “aero-fauna.”
\nRecognizing the opportunities presented by radar technologies, the U.S. Geological Survey (USGS), the U.S. Fish and Wildlife Service (USFWS), and university partners collaborated first on individual projects and then in a broader, informal “collaborative” to coordinate their radar-related research and work together to develop the suite of products needed for conservation of birds and bats. Having produced two summary documents (Sojda and others, 2005; Ruth and others, 2005), the next objective was to convene a workshop for researchers, management and regulatory agencies, and other interested parties. The focus of this initial workshop was on strengthening the existing USGS-USFWS-university partnership and expanding the “collaborative” to include new Federal agency partners. The subject matter was centered on discussing available technologies, appropriate applications, management-related needs, and ways to strengthen collaborative research and conservation efforts.
\nThe workshop opened with presentations about the history of the “radar collaborative,” a description of the workshop objectives and focuses, and a summary of resource management and regulatory needs. Scientific presentations describing current research projects or subjects followed, given by USGS scientists, as well as scientists from other Federal agencies, academia, conservation and ornithological organizations, and a private contracting firm. Presenters addressed a wide variety of management issues including siting of wind-power facilities, bird/aircraft collisions, effects of hurricanes Katrina and Rita on bird migration, bird use of Conservation Reserve Program land, defining bird migration patterns at a broad regional scale, and associating migrant birds with their stopover habitats. Presentations described a variety of radar technologies including NEXRAD weather surveillance radar, modified mobile marine radar, military tracking radar, pencil beam radar, and dual polarization radar, as well as complementary techniques and analysis methods such as acoustic monitoring, thermal imaging, artificial intelligence, and individual-based modeling.
\nKey issues, themes, and questions identified during the open discussions that followed fell into five main categories: (1) agency needs and challenges; (2) radar technology and applications—technical questions and issues; (3) tools and resources for managers and researchers; (4) standardization of protocols; and (5) collaborative opportunities. Participants identified the following management, regulatory, or business issues facing them which may be addressed with radar technologies: tall structures; wind turbines; identification and protection of key habitats; assessment of management activities; and bird/aircraft strikes. Participants frequently expressed the need for specific information about which radar technologies are best used for answering particular questions. User groups emphasized the importance of clear, defensible scientific information on which they can base their activities. In turn, researchers emphasized their need for clearly defined, specific questions from managers so that they can design and conduct the required research. Discussions about technical issues requiring further research and collaboration included target identity, ground-truthing, linking migrants to habitat, and standardized protocols for applied research.
\nWorkshop participants identified and endorsed a series of seven action items that would promote collaboration and begin to address key issues identified at the workshop:
\nAction Item #1: Establish a working subgroup to address large-scale surveillance radar standardization issues.
Action Item #2: Establish a working subgroup to address small-scale radar standardization issues.
Action Item #3: Bring management and regulatory agencies together to identify the three most important information needs for each key management issue relating to radar technologies.
Action Item #4: Develop Fact Sheet(s) to provide information about radar technology applications to migratory bird and bat conservation issues.
Action Item #5: Create a “radar collaborative” Website to provide information about radar biology applications, contacts, publications, and so forth.
Action Item #6: Formalize and expand the USGS-USFWS “radar collaborative.”
Action Item #7: Advance basic research, such as target identity and validation, which will support and improve our abilities to apply radar technologies to conservation objectives.
There was considerable interest in expanding the “radar collaborative” to include those agencies, organizations, and industries represented at the workshop. It was felt that the publication of the workshop proceedings, implementation of action items, and additional future meetings or workshops will be crucial in strengthening the “radar collaborative” effort and promoting the use of these valuable technologies for conserving migratory species.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20071361","usgsCitation":"Ruth, J.M., Manville, A., Larkin, R., Barrow, W., Johnson-Randall, L., Dawson, D.K., Diehl, R.H., Wang, Y., Sojda, R.S., Angryk, R., Klaver, R.W., Mead, R., Paxton, J., Heglund, P.J., Kirsch, E., Suarez, M.J., Robinson, L., Gauthreaux, S.A., Belser, C.G., Franke, S.J., Bruderer, B., Buler, J., Moore, F.R., Mizrahi, D.S., Fogg, R., Kelly, T., Cryan, P.M., Crum, T., Schuur, T.J., Krueper, D., Diehl, R., and Will, T., 2007, Applying radar technology to migratory bird conservation and management: Strengthening and expanding a collaborative: U.S. Geological Survey Open-File Report 2007-1361, iv, 86 p., https://doi.org/10.3133/ofr20071361.","productDescription":"iv, 86 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science 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sojda@usgs.gov","contributorId":1663,"corporation":false,"usgs":true,"family":"Sojda","given":"Richard","email":"sojda@usgs.gov","middleInitial":"S.","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":631204,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Angryk, Rafal","contributorId":169831,"corporation":false,"usgs":false,"family":"Angryk","given":"Rafal","email":"","affiliations":[{"id":13655,"text":"Montana State Univ.","active":true,"usgs":false}],"preferred":false,"id":631205,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Klaver, Robert W. 0000-0002-3263-9701 bklaver@usgs.gov","orcid":"https://orcid.org/0000-0002-3263-9701","contributorId":3285,"corporation":false,"usgs":true,"family":"Klaver","given":"Robert","email":"bklaver@usgs.gov","middleInitial":"W.","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true},{"id":222,"text":"Earth Resources 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Although BMPs have already been implemented in the watershed, some sense of their effectiveness in reducing phosphorus loading and their cost for installation and maintenance is still lacking. This report discusses both causes of nutrient loading and a wide-variety of BMPs used to treat or reduce causal factors. We specifically focused on cattle grazing as the principal land-use and causal factor for nutrient loading in the Klamath Basin above Upper Klamath Lake, Oregon. Several BMP types, including stream corridor fencing, riparian buffer strips and constructed wetlands, seem to have potential for reducing phosphorus loading that may result from cattle grazing. However, no single BMP is likely to be the most effective in all locations or situations.
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In 1997, the United States Geological Survey’s Mineral Resources Program initiated an effort to develop national digital databases for use in mineral resource and environmental assessments. One primary activity of this effort was to compile a national digital geologic map database, utilizing state geologic maps, to support mineral resource studies in the range of 1:250,000- to 1:1,000,000-scale. Over the course of the past decade, state databases were prepared using a common standard for the database structure, fields, attributes, and data dictionaries. As of late 2006, standardized geological map databases for all conterminous (CONUS) states have been available on-line as USGS Open-File Reports. For Alaska and Hawaii, new state maps are being prepared, and the preliminary work for Alaska is being released as a series of 1:500,000-scale regional compilations. See below for a list of all published databases.
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2007 - Major and Trace-Element Data from Stream-Sediment and Rock Samples Collected in the Taylor Mountains 1:250,000-Scale Quadrangle, Alaska","interactions":[],"lastModifiedDate":"2012-02-10T00:11:45","indexId":"ofr20071196","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"2007-1196","title":"Major and Trace-Element Data from Stream-Sediment and Rock Samples Collected in the Taylor Mountains 1:250,000-Scale Quadrangle, Alaska","docAbstract":"In the summers of 2004, 2005, and 2006, the U.S. Geological Survey conducted a reconnaissance geochemical survey of the drainage basins throughout most of the Taylor Mountains 1:250,000-scale quadrangle, in southwestern Alaska. The purpose of the study was to locate areas of potential interest for ore minerals, provide data that may be used to determine regional-scale element baselines, and provide data for the concurrent U.S. Geological Survey geologic mapping and mineral resource assessment effort. 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