The variability in size structure and relative abundance (CPUE; number of fish ≥200 mm total length, LT, collected per hour of electrofishing or trammel netting) of three native Colorado River fishes, the endangered humpback chub Gila cypha, flannelmouth sucker Catostomus latipinnus and bluehead sucker Catostomus discobolus, collected from electrofishing and trammel nets was assessed to determine which gear was most appropriate to detect trends in relative abundance of adult fishes. Coefficient of variation (CV) of CPUE ranged from 210 to 566 for electrofishing and 128 to 575 for trammel netting, depending on season, diel period and species. Mean CV was lowest for trammel nets for humpback chub (P = 0·004) and tended to be lower for flannelmouth sucker (P = 0·12), regardless of season or diel period. Only one bluehead sucker >200 mm was collected with electrofishing. Electrofishing and trammel netting CPUE were not related for humpback chub (r = −0·32, P = 0·43) or flannelmouth sucker (r = −0·27, P = 0·46) in samples from the same date, location and hour set. Electrofishing collected a higher proportion of smaller (<200 mm LT) humpback chub (P < 0·001), flannelmouth suckers (P < 0·001) and bluehead suckers (P < 0·001) than trammel netting, suggesting that conclusions derived from one gear may not be the same as from the other gear. This is probably because these gears fished different habitats, which are occupied by different fish life stages. To detect a 25% change in CPUE at a power of 0·9, at least 473 trammel net sets or 1918 electrofishing samples would be needed in this 8 km reach. This unattainable amount of samples for both trammel netting and electrofishing indicates that detecting annual changes in CPUE may not be practical and analysis of long‐term data or stock assessment models using mark‐recapture methods may be needed to assess trends in abundance of Colorado River native fishes, and probably other rare fishes as well.
","language":"English","publisher":"Wiley","doi":"10.1111/j.0022-1112.2004.00575.x","usgsCitation":"Paukert, C., 2004, Comparison of electrofishing and trammel netting variability for sampling native fishes: Journal of Fish Biology, v. 65, no. 6, p. 1643-1652, https://doi.org/10.1111/j.0022-1112.2004.00575.x.","productDescription":"10 p.","startPage":"1643","endPage":"1652","numberOfPages":"10","costCenters":[],"links":[{"id":234808,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"65","issue":"6","noUsgsAuthors":false,"publicationDate":"2004-12-20","publicationStatus":"PW","scienceBaseUri":"5059f85ee4b0c8380cd4d063","contributors":{"authors":[{"text":"Paukert, C.P.","contributorId":10151,"corporation":false,"usgs":true,"family":"Paukert","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":408142,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70187740,"text":"70187740 - 2004 - Ecological overview of Kenai Fjords National Park","interactions":[],"lastModifiedDate":"2017-05-16T14:35:23","indexId":"70187740","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":691,"text":"Alaska Park Science","printIssn":"1545- 496","active":true,"publicationSubtype":{"id":10}},"title":"Ecological overview of Kenai Fjords National Park","docAbstract":"The major drivers of Kenai Fjords ecosystems are tectonics and climate. In this overview, we describe how these forces have contributed to the shaping of the lands and ecosystems of Kenai Fjords.
Physically, the park is comprised of several distinct components, set within a broader ecophysical framework that includes the Kenai Peninsula and coastal marine waters and islands. Squeezed between the Gulf of Alaska and the Kenai Mountains, the coastal zone of the park is a narrow band of exposed headlands and deep fjords. The Harding Icefield caps the Kenai Mountains above the fjords with ice estimated to be 3,000 feet (1,000 m) thick (Figure 1). Although not included in the National Park Service jurisdiction, the park is ecologically linked to the offshore marine ecosystem, and the embedded offshore islands, most of which are part of the Alaska Maritime National Wildlife Refuge, managed by the U.S. Fish and Wildlife Service.
","language":"English","publisher":"U.S. National Park Service","usgsCitation":"Spencer, P., and Irvine, G.V., 2004, Ecological overview of Kenai Fjords National Park: Alaska Park Science, v. 3, no. 1, p. 5-11.","productDescription":"7 p.","startPage":"5","endPage":"11","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":341374,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":341376,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.nps.gov/akso/nature/science/ak_park_science/PDF/2004Vol3-1/Alaska-Park-Science-Scientific-Studies-in-Kenai-Fjords-National-Park.pdf"}],"country":"United States","state":"Alaska","otherGeospatial":"Kenai Fjords National Park","volume":"3","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"591c0fcde4b0a7fdb43ddf08","contributors":{"authors":[{"text":"Spencer, Page","contributorId":62281,"corporation":false,"usgs":true,"family":"Spencer","given":"Page","email":"","affiliations":[],"preferred":false,"id":695392,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Irvine, Gail V. girvine@usgs.gov","contributorId":2368,"corporation":false,"usgs":true,"family":"Irvine","given":"Gail","email":"girvine@usgs.gov","middleInitial":"V.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":695393,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70026158,"text":"70026158 - 2004 - Constraining the slip distribution and fault geometry of the Mw 7.9, 3 November 2002, Denali fault earthquake with Interferometric Synthetic Aperture Radar and Global Positioning System data","interactions":[],"lastModifiedDate":"2015-10-26T14:47:48","indexId":"70026158","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Constraining the slip distribution and fault geometry of the Mw 7.9, 3 November 2002, Denali fault earthquake with Interferometric Synthetic Aperture Radar and Global Positioning System data","docAbstract":"The Mw 7.9, Denali fault earthquake (DFE) is the largest continental strike-slip earthquake to occur since the development of Interferometric Synthetic Aperture Radar (InSAR). We use five interferograms, constructed using radar images from the Canadian Radarsat-1 satellite, to map the surface deformation at the western end of the fault rupture. Additional geodetic data are provided by displacements observed at 40 campaign and continuous Global Positioning System (GPS) sites. We use the data to determine the geometry of the Susitna Glacier fault, thrusting on which initiated the DFE, and to determine a slip model for the entire event that is consistent with both the InSAR and GPS data. We find there was an average of 7.3 ± 0.4 m slip on the Susitna Glacier fault, between 1 and 9.5 km depth on a 29 km long fault that dips north at 41 ± 0.7° and has a surface projection close to the mapped rupture. On the Denali fault, a simple model with large slip patches finds a maximum of 8.7 ± 0.7 m of slip between the surface and 14.3 ± 0.2 km depth. A more complex distributed slip model finds a peak of 12.5 ± 0.8 m in the upper 4 km, significantly higher than the observed surface slip. We estimate a geodetic moment of 670 ± 10 × 1018 N m (Mw 7.9), consistent with seismic estimates. Lack of preseismic data resulted in an absence of InSAR coverage for the eastern half of the DFE rupture. A dedicated geodetic InSAR mission could obviate coverage problems in the future.
","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120040623","issn":"00371106","usgsCitation":"Wright, T.J., Lu, Z., and Wicks, C., 2004, Constraining the slip distribution and fault geometry of the Mw 7.9, 3 November 2002, Denali fault earthquake with Interferometric Synthetic Aperture Radar and Global Positioning System data: Bulletin of the Seismological Society of America, v. 94, no. 6, p. S175-S189, https://doi.org/10.1785/0120040623.","productDescription":"15 p.","startPage":"S175","endPage":"S189","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":234891,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"94","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fa08e4b0c8380cd4d8ba","contributors":{"authors":[{"text":"Wright, Tim J.","contributorId":84959,"corporation":false,"usgs":true,"family":"Wright","given":"Tim","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":408187,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lu, Z.","contributorId":106241,"corporation":false,"usgs":true,"family":"Lu","given":"Z.","affiliations":[],"preferred":false,"id":408188,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wicks, Charles 0000-0002-0809-1328","orcid":"https://orcid.org/0000-0002-0809-1328","contributorId":9023,"corporation":false,"usgs":true,"family":"Wicks","given":"Charles","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":408186,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1001061,"text":"1001061 - 2004 - Factors affecting the evolution of coastal wetlands of the Laurentian Great Lakes: An overview","interactions":[],"lastModifiedDate":"2017-05-04T12:47:59","indexId":"1001061","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":865,"text":"Aquatic Ecosystem Health & Management","active":true,"publicationSubtype":{"id":10}},"title":"Factors affecting the evolution of coastal wetlands of the Laurentian Great Lakes: An overview","docAbstract":"Coastal wetlands play a pivotal role in the Great Lakes ecosystem. As buffer zones between the land and open waters of the Great Lakes, they perform a variety of essential functions providing both direct and indirect anthropogenic benefits. Geology, morphology and climate are the dominant variables that influence Laurentian Great Lakes wetland development. However, anthropogenic factors are the major contributors to alteration of natural wetland processes. This paper provides an overview of natural and anthropogenic factors important in Great Lakes coastal wetland development and provides statistical information describing the Great Lakes Basin. A brief description of wetlands classification and research issues is also presented.
","language":"English","publisher":"Taylor & Francis","doi":"10.1080/14634980490461506","usgsCitation":"Mayer, T., Edsall, T., and Munawar, M., 2004, Factors affecting the evolution of coastal wetlands of the Laurentian Great Lakes: An overview: Aquatic Ecosystem Health & Management, v. 7, no. 2, p. 171-178, https://doi.org/10.1080/14634980490461506.","productDescription":"8 p.","startPage":"171","endPage":"178","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":128928,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","otherGeospatial":"Great Lakes","volume":"7","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a05e4b07f02db5f87ad","contributors":{"authors":[{"text":"Mayer, T.","contributorId":29353,"corporation":false,"usgs":true,"family":"Mayer","given":"T.","email":"","affiliations":[],"preferred":false,"id":310374,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edsall, T.","contributorId":8792,"corporation":false,"usgs":true,"family":"Edsall","given":"T.","email":"","affiliations":[],"preferred":false,"id":310373,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Munawar, M.","contributorId":79835,"corporation":false,"usgs":true,"family":"Munawar","given":"M.","email":"","affiliations":[],"preferred":false,"id":310375,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70026263,"text":"70026263 - 2004 - Dynamic rupture modeling of the transition from thrust to strike-slip motion in the 2002 Denali fault earthquake, Alaska","interactions":[],"lastModifiedDate":"2021-07-20T11:32:47.048018","indexId":"70026263","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Dynamic rupture modeling of the transition from thrust to strike-slip motion in the 2002 Denali fault earthquake, Alaska","docAbstract":"We use three-dimensional dynamic (spontaneous) rupture models to investigate the nearly simultaneous ruptures of the Susitna Glacier thrust fault and the Denali strike-slip fault. With the 1957 Mw 8.3 Gobi-Altay, Mongolia, earthquake as the only other well-documented case of significant, nearly simultaneous rupture of both thrust and strike-slip faults, this feature of the 2002 Denali fault earthquake provides a unique opportunity to investigate the mechanisms responsible for development of these large, complex events. We find that the geometry of the faults and the orientation of the regional stress field caused slip on the Susitna Glacier fault to load the Denali fault. Several different stress orientations with oblique right-lateral motion on the Susitna Glacier fault replicate the triggering of rupture on the Denali fault about 10 sec after the rupture nucleates on the Susitna Glacier fault. However, generating slip directions compatible with measured surface offsets and kinematic source inversions requires perturbing the stress orientation from that determined with focal mechanisms of regional events. Adjusting the vertical component of the principal stress tensor for the regional stress field so that it is more consistent with a mixture of strike-slip and reverse faulting significantly improves the fit of the slip-rake angles to the data. Rotating the maximum horizontal compressive stress direction westward appears to improve the fit even further.","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120040614","usgsCitation":"Aagaard, B.T., Anderson, G., and Hudnut, K., 2004, Dynamic rupture modeling of the transition from thrust to strike-slip motion in the 2002 Denali fault earthquake, Alaska: Bulletin of the Seismological Society of America, v. 94, no. 6B, p. 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Brad T. 0000-0002-8795-9833 baagaard@usgs.gov","orcid":"https://orcid.org/0000-0002-8795-9833","contributorId":192869,"corporation":false,"usgs":true,"family":"Aagaard","given":"Brad","email":"baagaard@usgs.gov","middleInitial":"T.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true},{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":false,"id":408779,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anderson, G.","contributorId":26490,"corporation":false,"usgs":true,"family":"Anderson","given":"G.","affiliations":[],"preferred":false,"id":408780,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hudnut, K.W.","contributorId":25179,"corporation":false,"usgs":true,"family":"Hudnut","given":"K.W.","email":"","affiliations":[],"preferred":false,"id":408778,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70026157,"text":"70026157 - 2004 - The estuarine chemistry and isotope systematics of 234,238U in the Amazon and Fly Rivers","interactions":[],"lastModifiedDate":"2012-03-12T17:20:31","indexId":"70026157","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","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":"The estuarine chemistry and isotope systematics of 234,238U in the Amazon and Fly Rivers","docAbstract":"Natural concentrations of 238U and ??234U values were determined in estuarine surface waters and pore waters of the Amazon and Fly (Papua New Guinea) Rivers to investigate U transport phenomena across river-dominated land-sea margins. Discharge from large, tropical rivers is a major source of dissolved and solid materials transported to the oceans, and are important in defining not only oceanic mass budgets, but also terrestrial weathering rates. On the Amazon shelf, salinity-property plots of dissolved organic carbon, pH and total suspended matter revealed two vastly contrasting water masses that were energetically mixed. In this mixing zone, the distribution of uranium was highly non-conservative and exhibited extensive removal from the water column. Uranium removal was most pronounced within a salinity range of 0-16.6, and likely the result of scavenging and flocculation reactions with inorganic (i.e., Fe/Mn oxides) and organic colloids/particles. Removal of uranium may also be closely coupled to exchange and resuspension processes at the sediment/water interface. An inner-shelf pore water profile indicated the following diagenetic processes: extensive (???1 m) zones of Fe(III) - and, to a lesser degree, Mn(IV) - reduction in the absence of significant S(II) concentrations appeared to facilitate the formation of various authigenic minerals (e.g., siderite, rhodocrosite and uraninite). The pore water dissolved 238U profile co-varied closely with Mn(II). Isotopic variations as evidenced in ??234U pore waters values from this site revealed information on the origin and history of particulate uranium. Only after a depth of about 1 m did the ??234U value approach unity (secular equilibrium), denoting a residual lattice bound uranium complex that is likely an upper-drainage basin weathering product. This suggests that the enriched ??234U values represent a riverine surface complexation product that is actively involved in Mn-Fe diagenetic cycles and surface complexation reactions. In the Fly River estuary, 238U appears to exhibit a reasonably conservative distribution as a function of salinity. The absence of observed U removal does not necessarily imply non-reactivity, but instead may record an integration of concurrent U removal and release processes. There is not a linear correlation between ??234U vs. 1/ 238U that would imply simple two component mixing. It is likely that resuspension of bottom sediments, prolonged residence times in the lower reaches of the Fly River, and energetic particle-colloid interactions contribute to the observed estuarine U distribution. The supply of uranium discharged from humid, tropical river systems to the sea appears to be foremost influenced by particle/water interactions that are ultimately governed by the particular physiographic and hydrologic characteristics of an estuary. ?? 2004 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Continental Shelf Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.csr.2004.07.025","issn":"02784343","usgsCitation":"Swarzenski, P., Campbell, P., Porcelli, D., and McKee, B., 2004, The estuarine chemistry and isotope systematics of 234,238U in the Amazon and Fly Rivers: Continental Shelf Research, v. 24, no. 19, p. 2357-2372, https://doi.org/10.1016/j.csr.2004.07.025.","startPage":"2357","endPage":"2372","numberOfPages":"16","costCenters":[],"links":[{"id":208843,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.csr.2004.07.025"},{"id":234890,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"19","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505babdae4b08c986b323107","contributors":{"authors":[{"text":"Swarzenski, P. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":49156,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.","affiliations":[],"preferred":false,"id":408183,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Campbell, P.","contributorId":99249,"corporation":false,"usgs":true,"family":"Campbell","given":"P.","email":"","affiliations":[],"preferred":false,"id":408185,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Porcelli, D.","contributorId":35912,"corporation":false,"usgs":true,"family":"Porcelli","given":"D.","email":"","affiliations":[],"preferred":false,"id":408182,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McKee, B.","contributorId":77716,"corporation":false,"usgs":true,"family":"McKee","given":"B.","email":"","affiliations":[],"preferred":false,"id":408184,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70026155,"text":"70026155 - 2004 - Observations of deep long-period (DLP) seismic events beneath Aleutian arc volcanoes; 1989-2002","interactions":[],"lastModifiedDate":"2017-03-06T14:38:04","indexId":"70026155","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Observations of deep long-period (DLP) seismic events beneath Aleutian arc volcanoes; 1989-2002","docAbstract":"Between October 12, 1989 and December 31, 2002, the Alaska Volcano Observatory (AVO) located 162 deep long-period (DLP) events beneath 11 volcanic centers in the Aleutian arc. These events generally occur at mid- to lower-crustal depths (10-45 km) and are characterized by emergent phases, extended codas, and a strong spectral peak between 1.0 and 3.0 Hz. Observed wave velocities and particle motions indicate that the dominant phases are P- and S-waves. DLP epicenters often extend over broad areas (5-20 km) surrounding the active volcanoes. The average reduced displacement of Aleutian DLPs is 26.5 cm2 and the largest event has a reduced displacement of 589 cm2 (or ML2.5). Aleutian DLP events occur both as solitary events and as sequences of events with several occurring over a period of 1-30 min. Within the sequences, individual DLPs are often separated by lower-amplitude volcanic tremor with a similar spectral character. Occasionally, volcano-tectonic earthquakes that locate at similar depths are contained within the DLP sequences.
At most, Aleutian volcanoes DLPs appear to loosely surround the main volcanic vent and occur as part of background seismicity. A likely explanation is that they reflect a relatively steady-state process of magma ascent over broad areas in the lower and middle portions of the crust. At Mount Spurr, DLP seismicity was initiated by the 1992 eruptions and then slowly declined until 1997. At Shishaldin Volcano, a short-lived increase in DLP seismicity occurred about 10 months prior to the April 19, 1999 eruption. These observations suggest a link between eruptive activity and magma flux in the mid- to lower-crust and uppermost mantle.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jvolgeores.2004.07.005","issn":"03770273","usgsCitation":"Power, J., Stihler, S., White, R., and Moran, S., 2004, Observations of deep long-period (DLP) seismic events beneath Aleutian arc volcanoes; 1989-2002: Journal of Volcanology and Geothermal Research, v. 138, no. 3-4, p. 243-266, https://doi.org/10.1016/j.jvolgeores.2004.07.005.","productDescription":"24 p.","startPage":"243","endPage":"266","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":234850,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Aleutian Arc","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -189.931640625,\n 48.69096039092549\n ],\n [\n -149.94140625,\n 48.69096039092549\n ],\n [\n -149.94140625,\n 62\n ],\n [\n -189.931640625,\n 62\n ],\n [\n -189.931640625,\n 48.69096039092549\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"138","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6a8ee4b0c8380cd7422f","contributors":{"authors":[{"text":"Power, J.A.","contributorId":20765,"corporation":false,"usgs":true,"family":"Power","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":408143,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stihler, S.D.","contributorId":42616,"corporation":false,"usgs":true,"family":"Stihler","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":408145,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"White, R.A.","contributorId":21953,"corporation":false,"usgs":true,"family":"White","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":408144,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Moran, S.C. 0000-0001-7308-9649","orcid":"https://orcid.org/0000-0001-7308-9649","contributorId":78896,"corporation":false,"usgs":true,"family":"Moran","given":"S.C.","affiliations":[],"preferred":false,"id":408146,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70026230,"text":"70026230 - 2004 - Preparation and certification of Re-Os dating reference materials: Molybdenites HLP and JDC","interactions":[],"lastModifiedDate":"2021-12-01T16:03:51.927593","indexId":"70026230","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1822,"text":"Geostandards and Geoanalytical Research","active":true,"publicationSubtype":{"id":10}},"title":"Preparation and certification of Re-Os dating reference materials: Molybdenites HLP and JDC","docAbstract":"Two Re-Os dating reference material molybdenites were prepared. Molybdenite JDC and molybdenite HLP are from a carbonate vein-type molybdenum-(lead)-uranium deposit in the Jinduicheng-Huanglongpu area of Shaanxi province, China. The samples proved to be homogeneous, based on the coefficient of variation of analytical results and an analysis of variance test. The sampling weight was 0.1 g for JDC and 0.025 g for HLP. An isotope dilution method was used for the determination of Re and Os. Sample decomposition and pre-concentration of Re and Os prior to measurement were accomplished using a variety of methods: acid digestion, alkali fusion, ion exchange and solvent extraction. Negative thermal ionisation mass spectrometry and inductively coupled plasma-mass spectrometry were used for the determination of Re and 187Os concentration and isotope ratios. The certified values include the contents of Re and Os and the model ages. For HLP, the Re content was 283.8 ± 6.2 μg g−1, 187Os was 659 ± 14 ng g−1 and the Re-Os model age was 221.4 ± 5.6 Ma. For JDC, the Re content was 17.39 ± 0.32 μg g−1, 187Os was 25.46 ± 0.60 ng g−1 and the Re-Os model age was 139.6 ± 3.8 Ma. Uncertainties for both certified reference materials are stated at the 95% level of confidence. Three laboratories (from three countries: PR. China, USA, Sweden) joined in the certification programme. These certified reference materials are primarily useful for Re-Os dating of molybdenite, sulfides, black shale, etc.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1751-908X.2004.tb01042.x","usgsCitation":"Du, A., Wu, S., Sun, D., Wang, S., Qu, W., Markey, R., Stain, H., Morgan, J., and Malinovskiy, D., 2004, Preparation and certification of Re-Os dating reference materials: Molybdenites HLP and JDC: Geostandards and Geoanalytical Research, v. 28, no. 1, p. 41-52, https://doi.org/10.1111/j.1751-908X.2004.tb01042.x.","productDescription":"12 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A.","contributorId":22542,"corporation":false,"usgs":true,"family":"Du","given":"A.","email":"","affiliations":[],"preferred":false,"id":408645,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wu, S.","contributorId":84128,"corporation":false,"usgs":true,"family":"Wu","given":"S.","email":"","affiliations":[],"preferred":false,"id":408651,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sun, D.","contributorId":35103,"corporation":false,"usgs":true,"family":"Sun","given":"D.","email":"","affiliations":[],"preferred":false,"id":408647,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wang, Shaoming","contributorId":38745,"corporation":false,"usgs":true,"family":"Wang","given":"Shaoming","email":"","affiliations":[],"preferred":false,"id":408648,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Qu, W.","contributorId":90512,"corporation":false,"usgs":true,"family":"Qu","given":"W.","email":"","affiliations":[],"preferred":false,"id":408652,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Markey, R.","contributorId":29982,"corporation":false,"usgs":true,"family":"Markey","given":"R.","email":"","affiliations":[],"preferred":false,"id":408646,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Stain, H.","contributorId":58434,"corporation":false,"usgs":true,"family":"Stain","given":"H.","email":"","affiliations":[],"preferred":false,"id":408650,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Morgan, J.","contributorId":6216,"corporation":false,"usgs":true,"family":"Morgan","given":"J.","affiliations":[],"preferred":false,"id":408644,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Malinovskiy, D.","contributorId":51505,"corporation":false,"usgs":true,"family":"Malinovskiy","given":"D.","email":"","affiliations":[],"preferred":false,"id":408649,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70185331,"text":"70185331 - 2004 - Additions to the avifauna of St Matthew Island, Bering Sea","interactions":[],"lastModifiedDate":"2018-06-20T20:14:26","indexId":"70185331","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3743,"text":"Western Birds","active":true,"publicationSubtype":{"id":10}},"title":"Additions to the avifauna of St Matthew Island, Bering Sea","docAbstract":"St. Matthew Island (60°24' N, 172°42' W) is located in the north-central Bering Sea and is renowned for its distinctive Beringian flora and fauna. Because of its central position between the coasts of Russia and Alaska, St. Matthew Island and its nearby satellites, Hall and Pinnacle islands, support a mixture of Palearctic and Nearctic avifaunas. Of special interest to North American ornithologists are the numerous Eurasian bird species that visit the islands each spring and fall. Winker et al. (2002) published the first comprehensive summary of bird records for the 125 species detected on St. Matthew Island from 1899 to 1997. Because of its remote location, however, St. Matthew Island is seldom visited, and the island's avifauna remains poorly described.
As part of an island-wide systematic survey for Rock Sandpipers (Calidris ptilocnemis) and McKay's Buntings (Plectrophenax hyperboreus), our crew of five ornithologists was present on St. Matthew Island from 25 May to 9 July 2003. In this paper we provide information for 11 bird species seen for the first time on St. Matthew Island. Phylogenetic sequence and nomenclature follow the American Ornithologists' Union (1998, 2000) and Banks et al. (2002, 2003, 2004). An annotated species list with details of observation is on file at the University of Alaska Museum, Fairbank.
","language":"English","publisher":"Western Field Ornithologists","usgsCitation":"Johnson, J., Matsuoka, S.M., Ruthrauff, D.R., Litzow, M.A., and Dementyev, M.N., 2004, Additions to the avifauna of St Matthew Island, Bering Sea: Western Birds, v. 35, no. 1, p. 50-52.","productDescription":"3 p.","startPage":"50","endPage":"52","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":337874,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":337873,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.westernfieldornithologists.org/archive/V35/journal-35-1.php","text":"Volume 35, Issue 1 on Journal's Website"}],"country":"United States","state":"Alaska","otherGeospatial":"St. Matthew Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -173.30657958984375,\n 60.142872118694264\n ],\n [\n -172.12554931640625,\n 60.142872118694264\n ],\n [\n -172.12554931640625,\n 60.72962950387011\n ],\n [\n -173.30657958984375,\n 60.72962950387011\n ],\n [\n -173.30657958984375,\n 60.142872118694264\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"35","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58d0ea1be4b0236b68f6736b","contributors":{"authors":[{"text":"Johnson, James A.","contributorId":84649,"corporation":false,"usgs":true,"family":"Johnson","given":"James A.","affiliations":[],"preferred":false,"id":685200,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Matsuoka, Steven M. 0000-0001-6415-1885 smatsuoka@usgs.gov","orcid":"https://orcid.org/0000-0001-6415-1885","contributorId":184173,"corporation":false,"usgs":true,"family":"Matsuoka","given":"Steven","email":"smatsuoka@usgs.gov","middleInitial":"M.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":685201,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ruthrauff, Daniel R. 0000-0003-1355-9156 druthrauff@usgs.gov","orcid":"https://orcid.org/0000-0003-1355-9156","contributorId":4181,"corporation":false,"usgs":true,"family":"Ruthrauff","given":"Daniel","email":"druthrauff@usgs.gov","middleInitial":"R.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":685202,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Litzow, Michael A.","contributorId":8789,"corporation":false,"usgs":true,"family":"Litzow","given":"Michael","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":685203,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dementyev, Maksim N.","contributorId":138560,"corporation":false,"usgs":false,"family":"Dementyev","given":"Maksim","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":685204,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70026229,"text":"70026229 - 2004 - Simulation of ventilation efficiency, and pre-closure temperatures in emplacement drifts at Yucca Mountain, Nevada, using Monte Carlo and composite thermal-pulse methods","interactions":[],"lastModifiedDate":"2018-06-07T16:53:44","indexId":"70026229","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Simulation of ventilation efficiency, and pre-closure temperatures in emplacement drifts at Yucca Mountain, Nevada, using Monte Carlo and composite thermal-pulse methods","docAbstract":"Predictions of waste canister and repository driftwall temperatures as functions of space and time are important to evaluate pre-closure performance of the proposed repository for spent nuclear fuel and high-level radioactive waste at Yucca Mountain, Nevada. Variations in the lithostratigraphic features in densely welded and crystallized rocks of the 12.8-million-year-old Topopah Spring Tuff, especially the porosity resulting from lithophysal cavities, affect thermal properties. A simulated emplacement drift is based on projecting lithophysal cavity porosity values 50 to 800 m from the Enhanced Characterization of the Repository Block cross drift. Lithophysal cavity porosity varies from 0.00 to 0.05 cm3/cm3 in the middle nonlithophysal zone and from 0.03 to 0.28 cm3/cm3 in the lower lithophysal zone. A ventilation model and computer program titled \"Monte Carlo Simulation of Ventilation\" (MCSIMVENT), which is based on a composite thermal-pulse calculation, simulates statistical variability and uncertainty of rock-mass thermal properties and ventilation performance along a simulated emplacement drift for a pre-closure period of 50 years. Although ventilation efficiency is relatively insensitive to thermal properties, variations in lithophysal porosity along the drift can result in a range of peak driftwall temperatures can range from 40 to 85??C for the preclosure period. Copyright ?? 2004 by ASME.","largerWorkTitle":"Proceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004","conferenceTitle":"2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT/FED 2004","conferenceDate":"11 July 2004 through 15 July 2004","conferenceLocation":"Charlotte, NC","language":"English","usgsCitation":"Case, J., and Buesch, D., 2004, Simulation of ventilation efficiency, and pre-closure temperatures in emplacement drifts at Yucca Mountain, Nevada, using Monte Carlo and composite thermal-pulse methods, in Proceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004, v. 2 B, Charlotte, NC, 11 July 2004 through 15 July 2004, p. 1109-1115.","startPage":"1109","endPage":"1115","numberOfPages":"7","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":234321,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2 B","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b90b7e4b08c986b319642","contributors":{"authors":[{"text":"Case, J.B.","contributorId":107897,"corporation":false,"usgs":true,"family":"Case","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":408643,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Buesch, D.C. 0000-0002-4978-5027","orcid":"https://orcid.org/0000-0002-4978-5027","contributorId":73633,"corporation":false,"usgs":true,"family":"Buesch","given":"D.C.","affiliations":[],"preferred":false,"id":408642,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1016417,"text":"1016417 - 2004 - Seed and vegetative production of shrubs and growth of understory conifer regeneration","interactions":[],"lastModifiedDate":"2012-02-02T00:04:51","indexId":"1016417","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2900,"text":"Northwest Science","onlineIssn":"2161-9859","printIssn":"0029-344X","active":true,"publicationSubtype":{"id":10}},"title":"Seed and vegetative production of shrubs and growth of understory conifer regeneration","docAbstract":"We observed flower and fruit production for nine understory shrub species in western Washington and Oregon and examined the relationships between shrub reproductive output and plant size, plant age, site factors, and overstory density to determine the factors that control flowering or fruiting in understory shrubs. In Washington, 50 or more shrubs or microplots (for rhizomatous species) were sampled for each of eight species. The variables examined were more useful for explaining abundance of flowers or fruit on shrubs than they were for explaining the probability that a shrub would produce flowers or fruit. Plant size was consistently the most useful predictor of flower/fruit abundance in all species; plant age was also a good predictor of abundance and was strongly correlated with plant size. Site variables (e.g., slope) and overstory competition variables (e.g., presence/absence of a canopy gap) also helped explain flower/fruit abundance for some species. At two Oregon sites, the responses of five species to four levels of thinning were observed for 2-4 yr (15 shrubs or microplots per treatment per year). Thinning increased the probability and abundance of flowering/fruiting for two species, had no effect on one species, and responses for two other species were positive but inconsistent between sites or from year to year. We believe reducing overstory density or creating canopy gaps may be useful tools for enhancing shrub size and vigor, thus, increasing the probability and abundance of fruiting in some understory shrub species.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Northwest Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Wender, B., Harrington, C., and Tappeiner, J., 2004, Seed and vegetative production of shrubs and growth of understory conifer regeneration: Northwest Science, v. 78, no. 2, p. 124-140.","productDescription":"p. 124-140","startPage":"124","endPage":"140","numberOfPages":"17","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":134201,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"78","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e486ce4b07f02db50b574","contributors":{"authors":[{"text":"Wender, B.","contributorId":102041,"corporation":false,"usgs":true,"family":"Wender","given":"B.","email":"","affiliations":[],"preferred":false,"id":324221,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harrington, C.","contributorId":21126,"corporation":false,"usgs":true,"family":"Harrington","given":"C.","email":"","affiliations":[],"preferred":false,"id":324219,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tappeiner, J. C.","contributorId":39751,"corporation":false,"usgs":true,"family":"Tappeiner","given":"J. C.","affiliations":[],"preferred":false,"id":324220,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1016288,"text":"1016288 - 2004 - Flower and fruit production of understory shrubs in western Washington and Oregon","interactions":[],"lastModifiedDate":"2012-02-02T00:04:50","indexId":"1016288","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2900,"text":"Northwest Science","onlineIssn":"2161-9859","printIssn":"0029-344X","active":true,"publicationSubtype":{"id":10}},"title":"Flower and fruit production of understory shrubs in western Washington and Oregon","docAbstract":"We observed flower and fruit production for nine understory shrub species in western Washington and Oregon and examined the relationships between shrub reproductive output and plant size, plant age, site factors, and overstory density to determine the factors that control flowering or fruiting in understory shrubs. In Washington, 50 or more shrubs or microplots (for rhizomatous species) were sampled for each of eight species. The variables examined were more useful for explaining abundance of flowers or fruit on shrubs than they were for explaining the probability that a shrub would produce flowers or fruit. Plant size was consistently the most useful predictor of flower/fruit abundance in all species; plant age was also a good predictor of abundance and was strongly correlated with plant size. Site variables (e.g., slope) and overstory competition variables (e.g., presence/absence of a canopy gap) also helped explain flower/fruit abundance for some species. At two Oregon sites, the responses of five species to four levels of thinning were observed for 2-4 yr (15 shrubs or microplots per treatment per year). Thinning increased the probability and abundance of flowering/fruiting for two species, had no effect on one species, and responses for two other species were positive but inconsistent between sites or from year to year. We believe reducing overstory density or creating canopy gaps may be useful tools for enhancing shrub size and vigor, thus, increasing the probability and abundance of fruiting in some understory shrub species.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Northwest Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Wender, B., Harrington, C., and Tappeiner, J.C., 2004, Flower and fruit production of understory shrubs in western Washington and Oregon: Northwest Science, v. 78, no. 2, p. 124-140.","productDescription":"p. 124-140","startPage":"124","endPage":"140","numberOfPages":"17","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":134336,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"78","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e478fe4b07f02db48a4e2","contributors":{"authors":[{"text":"Wender, B.","contributorId":102041,"corporation":false,"usgs":true,"family":"Wender","given":"B.","email":"","affiliations":[],"preferred":false,"id":323899,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harrington, C.","contributorId":21126,"corporation":false,"usgs":true,"family":"Harrington","given":"C.","email":"","affiliations":[],"preferred":false,"id":323898,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tappeiner, J. C. II","contributorId":103235,"corporation":false,"usgs":true,"family":"Tappeiner","given":"J.","suffix":"II","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":323900,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1016295,"text":"1016295 - 2004 - Invasion of the Bullfrogs!","interactions":[],"lastModifiedDate":"2017-11-21T19:19:19","indexId":"1016295","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3567,"text":"The Klamath Kaleidoscope","active":true,"publicationSubtype":{"id":10}},"title":"Invasion of the Bullfrogs!","docAbstract":"No abstract available.
Larval amphibians have been widely used as model organisms in studies of community ecology of freshwater systems (Morin 1983, Alford 1999). Much of this work has assumed that trophic effects of larval anurans are focused on periphyton and planktonic algae (Dickman 1968, Seale 1980, Duellman and Trueb 1986), a view that has recently been questioned. Recent experiments suggest that anuran larvae can occupy broader trophic roles than previously believed and may function as important predators in some pond communities (Petranka et al. 1994, Petranka and Kennedy 1999)
To provide information for managing the captive population of endangered Guam Micronesian kingfishers (Halcyon cinnamomina cinnamomina), four biologically relevant thermal metrics were compared among captive facilities on the United States mainland and habitats used by wild Micronesian kingfishers on the island of Pohnpei (H. c. reichenbachii), Federated States of Micronesia. Additionally, aviaries where kingfishers laid eggs were compared to those in which birds did not attempt to breed. Compared to aviaries, habitats used by wild Pohnpei kingfishers had 3.2°C higher daily maximum and minimum temperatures and the proportion of time when temperatures were in the birds' thermoneutral zone was 45% greater. No differences were found in the magnitude of temperature fluctuation in captive and wild environments. In captive environments in which birds bred, daily maximum temperatures were 2.1°C higher and temperatures were within the thermoneutral zone 25% more often than in the aviaries where the kingfishers did not breed. No differences were found in the magnitude of temperature fluctuation or the daily minimum temperature. Results suggest that the thermal environment has the potential to influence reproduction, and that consideration should be given to increasing temperatures in captive breeding facilities to improve propagation of the endangered Micronesian kingfisher.
","language":"English","publisher":"Wiley","doi":"10.1002/zoo.20010","usgsCitation":"Kesler, D.C., and Haig, S.M., 2004, Thermal characteristics of wild and captive Micronesian Kingfisher nesting habitats: Zoo Biology, v. 23, no. 4, p. 301-308, https://doi.org/10.1002/zoo.20010.","productDescription":"8 p.","startPage":"301","endPage":"308","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":134185,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Federated States of Micronesia","otherGeospatial":"Pohnpei","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -206.71874999999997,\n 1.4500404973608074\n ],\n [\n -193.095703125,\n 1.4500404973608074\n ],\n [\n -193.095703125,\n 9.362352822055605\n ],\n [\n -206.71874999999997,\n 9.362352822055605\n ],\n [\n -206.71874999999997,\n 1.4500404973608074\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"23","issue":"4","noUsgsAuthors":false,"publicationDate":"2004-07-28","publicationStatus":"PW","scienceBaseUri":"4f4e4affe4b07f02db697d72","contributors":{"authors":[{"text":"Kesler, Dylan C.","contributorId":14358,"corporation":false,"usgs":false,"family":"Kesler","given":"Dylan","email":"","middleInitial":"C.","affiliations":[{"id":6769,"text":"University of Missouri, Columbia, MO","active":true,"usgs":false}],"preferred":false,"id":323920,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haig, Susan M. 0000-0002-6616-7589 susan_haig@usgs.gov","orcid":"https://orcid.org/0000-0002-6616-7589","contributorId":719,"corporation":false,"usgs":true,"family":"Haig","given":"Susan","email":"susan_haig@usgs.gov","middleInitial":"M.","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}],"preferred":true,"id":323919,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1016360,"text":"1016360 - 2004 - Interannual variability in aboveground tree growth in Stehekin River watershed, North Cascade Range, Washington","interactions":[],"lastModifiedDate":"2012-02-02T00:04:52","indexId":"1016360","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2900,"text":"Northwest Science","onlineIssn":"2161-9859","printIssn":"0029-344X","active":true,"publicationSubtype":{"id":10}},"title":"Interannual variability in aboveground tree growth in Stehekin River watershed, North Cascade Range, Washington","docAbstract":"Many forests in the Pacific Northwest region of North America are both highly productive and sensitive to climate. The combination of productivity and sensitivity makes forests vulnerable to changes in future climate and most likely to feed back to the regional carbon cycle. We reconstructed basal area increment (BAI) for 20 yr using tree-ring increments and diameter to identify species-specific responses of 14 forested vegetation types in the Stehekin River watershed in the North Cascade Range, to interannual climatic variability. Mean basal area increment (MBAI) for the 20-yr period is low when the standard error is low, but as MBAI increases, the standard error (SE) is more variable. Growth at sites with both low SE and MBAI may be related to climatic variables, however, some forest types dominated by Douglas-fir and mountain hemlock are both productive and responsive to climatic variability. Many forests in the Pacific Northwest are dominated by Douglas-fir, a commercially important timber species, and as a result, may play a major role in the regional carbon balance. Douglas-fir and mountain hemlock forests in the eastern portion of the North Cascades should be carefully monitored and managed in the context of both changing climatic conditions and regional carbon budgets.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Northwest Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Hessl, A.E., and Peterson, D.L., 2004, Interannual variability in aboveground tree growth in Stehekin River watershed, North Cascade Range, Washington: Northwest Science, v. 78, no. 3, p. 204-213.","productDescription":"p. 204-213","startPage":"204","endPage":"213","numberOfPages":"10","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":135019,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"78","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e499ee4b07f02db5bcb2e","contributors":{"authors":[{"text":"Hessl, Amy E.","contributorId":44517,"corporation":false,"usgs":true,"family":"Hessl","given":"Amy","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":324075,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peterson, D. L.","contributorId":36484,"corporation":false,"usgs":true,"family":"Peterson","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":324074,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1016290,"text":"1016290 - 2004 - Genetic identification of spotted owls, barred owls, and their hybrids: Legal implications of hybrid identity","interactions":[],"lastModifiedDate":"2017-03-16T10:12:14","indexId":"1016290","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1321,"text":"Conservation Biology","active":true,"publicationSubtype":{"id":10}},"title":"Genetic identification of spotted owls, barred owls, and their hybrids: Legal implications of hybrid identity","docAbstract":"Recent population expansion of Barred Owls ( Strix varia) into western North America has led to concern that they may compete with and further harm the Northern Spotted Owl ( S. occidentalis caurina), which is already listed as threatened under the U.S. Endangered Species Act (ESA). Because they hybridize, there is a legal need under the ESA for forensic identification of both species and their hybrids. We used mitochondrial control-region DNA and amplified fragment-length polymorphism (AFLP) analyses to assess maternal and biparental gene flow in this hybridization process. Mitochondrial DNA sequences (524 base pairs) indicated large divergence between Barred and Spotted Owls (13.9%). Further, the species formed two distinct clades with no signs of previous introgression. Fourteen diagnostic AFLP bands also indicated extensive divergence between the species, including markers differentiating them. Principal coordinate analyses and assignment tests clearly supported this differentiation. We found that hybrids had unique genetic combinations, including AFLP markers from both parental species, and identified known hybrids as well as potential hybrids with unclear taxonomic status. Our analyses corroborated the findings of extensive field studies that most hybrids genetically sampled resulted from crosses between female Barred Owls and male Spotted Owls. These genetic markers make it possible to clearly identify these species as well as hybrids and can now be used for research, conservation, and law enforcement. Several legal avenues may facilitate future conservation of Spotted Owls and other ESA-listed species that hybridize, including the ESA similarity-of-appearance clause (section 4[e]) and the Migratory Bird Treaty Act. The Migratory Bird Treaty Act appears to be the most useful route at this time.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Conservation Biology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1523-1739.2004.00206.x","usgsCitation":"Haig, S.M., Wennerberg, L., Mullins, T., Forsman, E., and Trail, P., 2004, Genetic identification of spotted owls, barred owls, and their hybrids: Legal implications of hybrid identity: Conservation Biology, v. 18, no. 5, p. 1347-1357, https://doi.org/10.1111/j.1523-1739.2004.00206.x.","productDescription":"p. 1347-1357","startPage":"1347","endPage":"1357","numberOfPages":"11","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":134125,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"5","noUsgsAuthors":false,"publicationDate":"2004-09-28","publicationStatus":"PW","scienceBaseUri":"4f4e4b24e4b07f02db6aeb3a","contributors":{"authors":[{"text":"Haig, Susan M. 0000-0002-6616-7589 susan_haig@usgs.gov","orcid":"https://orcid.org/0000-0002-6616-7589","contributorId":719,"corporation":false,"usgs":true,"family":"Haig","given":"Susan","email":"susan_haig@usgs.gov","middleInitial":"M.","affiliations":[{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true},{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"preferred":true,"id":323904,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wennerberg, Liv","contributorId":63360,"corporation":false,"usgs":false,"family":"Wennerberg","given":"Liv","affiliations":[],"preferred":false,"id":323907,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mullins, Thomas D.","contributorId":12819,"corporation":false,"usgs":true,"family":"Mullins","given":"Thomas D.","affiliations":[],"preferred":false,"id":323905,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Forsman, E.D.","contributorId":88324,"corporation":false,"usgs":true,"family":"Forsman","given":"E.D.","email":"","affiliations":[],"preferred":false,"id":323908,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Trail, P.","contributorId":32126,"corporation":false,"usgs":true,"family":"Trail","given":"P.","email":"","affiliations":[],"preferred":false,"id":323906,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":1016355,"text":"1016355 - 2004 - A comparison of three methods for assessing raptor diet during the breeding season","interactions":[],"lastModifiedDate":"2021-11-05T15:25:26.887806","indexId":"1016355","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3779,"text":"Wildlife Society Bulletin","onlineIssn":"1938-5463","printIssn":"0091-7648","active":true,"publicationSubtype":{"id":10}},"title":"A comparison of three methods for assessing raptor diet during the breeding season","docAbstract":"Video recording of prey deliveries to nests is a new technique for collecting data on raptor diet, but no thorough comparison of results from traditional methods based on collections of prey remains and pellets has been undertaken. We compared data from these 3 methods to determine relative merits of different methods for assessing raptor diet as part of a study of the breeding-season diet of northern goshawks (Accipiter gentilis) in Southeast Alaska. We applied these methods to 5 nests during each of the northern goshawk breeding seasons of 1998 and 1999 and identified 1,540 prey from deliveries, 209 prey from remains, and 209 prey from pellets. The proportions of birds and mammals varied among techniques, as did relative proportions of prey groups and age groups. Prey remains and pellets gave the least-similar diet descriptions. Over 2-day intervals during which data were collected using all 3 methods, prey-delivery data gave more individual prey and prey categories than the 2 other sources of information. We found that prey were not directly tracked in either prey remains or pellets compared with prey delivery videography. Analysis of prey-delivery videography provided the most complete description of diet, and we recommend that studies attempting to describe diet use this technique, at least as part of their methodology.
","language":"English","publisher":"Wiley","doi":"10.2193/0091-7648(2004)32[373:ACOMFA]2.0.CO;2","usgsCitation":"Lewis, S., Fuller, M.R., and Titus, K., 2004, A comparison of three methods for assessing raptor diet during the breeding season: Wildlife Society Bulletin, v. 32, no. 2, p. 373-385, https://doi.org/10.2193/0091-7648(2004)32[373:ACOMFA]2.0.CO;2.","productDescription":"13 p.","startPage":"373","endPage":"385","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":134154,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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","language":"English","publisher":"Elsevier","doi":"10.1016/j.jaridenv.2003.12.008","usgsCitation":"Beever, E.A., and Brussard, P., 2004, Community- and landscape-level responses of reptiles and small mammals to feral-horse grazing in the Great Basin: Journal of Arid Environments, v. 59, no. 2, p. 271-297, https://doi.org/10.1016/j.jaridenv.2003.12.008.","productDescription":"27 p.","startPage":"271","endPage":"297","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":133430,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Great Basin","volume":"59","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b24e4b07f02db6ae57d","contributors":{"authors":[{"text":"Beever, Erik A. 0000-0002-9369-486X ebeever@usgs.gov","orcid":"https://orcid.org/0000-0002-9369-486X","contributorId":2934,"corporation":false,"usgs":true,"family":"Beever","given":"Erik","email":"ebeever@usgs.gov","middleInitial":"A.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":323913,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brussard, P. F.","contributorId":63335,"corporation":false,"usgs":false,"family":"Brussard","given":"P. F.","affiliations":[],"preferred":false,"id":323914,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1016389,"text":"1016389 - 2004 - Effects of constant and cyclical thermal regimes on growth and feeding of juvenile cutthroat trout of variable sizes","interactions":[],"lastModifiedDate":"2021-08-18T15:52:29.657778","indexId":"1016389","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1471,"text":"Ecology of Freshwater Fish","active":true,"publicationSubtype":{"id":10}},"title":"Effects of constant and cyclical thermal regimes on growth and feeding of juvenile cutthroat trout of variable sizes","docAbstract":"The effects of constant (12, 18, and 24 °C) and cyclical (daily variation of 15–21 and 12–24 °C) thermal regimes on the growth and feeding of Lahontan cutthroat trout (Oncorhynchus clarki henshawi) of variable sizes were examined. Higher constant temperatures (i.e., 24 °C) and more variable daily temperatures (i.e., 12–24 °C daily cycle) negatively affected growth rates. As fish mass increased (from 0.24 to 15.52 g) the effects of different thermal regimes on mass growth became more pronounced. Following 14 days exposure to the thermal regimes, feeding rates of individual fish were assessed during acute exposure (40 min) to test temperatures of 12, 18, and 24 °C. Feeding rate was depressed during acute exposure to 24 °C, but was not significantly affected by the preceding thermal regime. Our results indicate that even brief daily exposure to higher temperatures (e.g., 24 °C) can have considerable sublethal effects on cutthroat trout, and that fish size should be considered when examining the effects of temperature.
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However, conventional standards are based on simple thresholds and are therefore poorly structured to address human-caused imbalances in dynamic, natural water quality parameters, such as nutrients, sediment, and temperature. A more applicable type of water quality standarda??a a??regime standarda??a??would describe desirable distributions of conditions over space and time within a stream network. By mandating the protection and restoration of the aquatic ecosystem dynamics that are required to support beneficial uses in streams, well-designed regime standards would facilitate more effective strategies for management of natural water quality parameters.
","language":"English","publisher":"Bioone","doi":"10.1641/0006-3568(2004)054[0155:TCFRWQ]2.0.CO;2","usgsCitation":"Poole, G., Dunham, J., Keenan, D., Sauter, S., McCullough, D., Mebane, C., Lockwood, J.C., Essig, D.A., Hicks, M.P., Sturdevant, D.J., Materna, E., Spalding, M., Risley, J., and Deppman, M., 2004, The case for regime-based water quality standards: BioScience, v. 54, no. 2, p. 155-161, https://doi.org/10.1641/0006-3568(2004)054[0155:TCFRWQ]2.0.CO;2.","productDescription":"7 p.","startPage":"155","endPage":"161","numberOfPages":"7","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":478285,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1641/0006-3568(2004)054[0155:tcfrwq]2.0.co;2","text":"Publisher Index Page"},{"id":135857,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"54","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b06e4b07f02db69a1bc","contributors":{"authors":[{"text":"Poole, Geoffrey C.","contributorId":25540,"corporation":false,"usgs":true,"family":"Poole","given":"Geoffrey C.","affiliations":[],"preferred":false,"id":324156,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dunham, J. B. 0000-0002-6268-0633","orcid":"https://orcid.org/0000-0002-6268-0633","contributorId":96637,"corporation":false,"usgs":true,"family":"Dunham","given":"J. B.","affiliations":[],"preferred":false,"id":324167,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Keenan, D.M.","contributorId":43732,"corporation":false,"usgs":true,"family":"Keenan","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":324160,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sauter, S.T.","contributorId":13203,"corporation":false,"usgs":true,"family":"Sauter","given":"S.T.","email":"","affiliations":[],"preferred":false,"id":324154,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"McCullough, D.A.","contributorId":16391,"corporation":false,"usgs":true,"family":"McCullough","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":324155,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Mebane, Christopher","contributorId":82673,"corporation":false,"usgs":true,"family":"Mebane","given":"Christopher","affiliations":[],"preferred":false,"id":324164,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lockwood, Jeffrey C.","contributorId":25541,"corporation":false,"usgs":true,"family":"Lockwood","given":"Jeffrey","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":324157,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Essig, Don A.","contributorId":53356,"corporation":false,"usgs":true,"family":"Essig","given":"Don","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":324162,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Hicks, Mark P.","contributorId":77906,"corporation":false,"usgs":true,"family":"Hicks","given":"Mark","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":324163,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Sturdevant, Debra J.","contributorId":43328,"corporation":false,"usgs":true,"family":"Sturdevant","given":"Debra","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":324159,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Materna, E.J.","contributorId":91829,"corporation":false,"usgs":true,"family":"Materna","given":"E.J.","email":"","affiliations":[],"preferred":false,"id":324165,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Spalding, M.","contributorId":47730,"corporation":false,"usgs":true,"family":"Spalding","given":"M.","affiliations":[],"preferred":false,"id":324161,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Risley, John","contributorId":38128,"corporation":false,"usgs":true,"family":"Risley","given":"John","affiliations":[],"preferred":false,"id":324158,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Deppman, Marianne","contributorId":92224,"corporation":false,"usgs":true,"family":"Deppman","given":"Marianne","email":"","affiliations":[],"preferred":false,"id":324166,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":1016287,"text":"1016287 - 2004 - Seasonal movement and home range of the Mariana Common Moorhen","interactions":[],"lastModifiedDate":"2017-11-21T19:28:11","indexId":"1016287","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3551,"text":"The Condor","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal movement and home range of the Mariana Common Moorhen","docAbstract":"Adult Mariana Common Moorhens (Gallinula chloropus guami) were radio-marked on Guam (n = 25) and Saipan (n = 18) to determine home range, inter- and intraseasonal space use, and movement patterns among the Mariana Islands of Guam, Saipan, Tinian, and Rota. Birds were tracked throughout the dry and wet seasons in 2000 and 2001. During the dry season, no interisland movements were detected and most birds remained at a single wetland. However, some radio-marked adults on Guam (48%) and Saipan (11%) dispersed from their capture site to other wetland sites. Inter-and intraisland movements increased during the wet season. Interisland movement from Saipan to Tinian occurred at the onset of the wet season, although no birds were observed moving off Guam. Radio-marked adults on Guam (71%) and Saipan (70%) dispersed from their capture site to other wetlands. On Guam, moorhens moved farther in the wet season than the dry season. During the wet season frequency of movement among sites was inversely proportional to the average distance between wetlands. Guam moorhens used rivers more often during the wet season. Among nine dispersing adult moorhens captured during the wet season on Fena Reservoir, Guam, 67% returned to Fena Reservoir during the 2001 dry season. Home-range estimates on Guam averaged 3.1 ± 4.8 ha (SD) and did not differ significantly between sexes or seasons. However, during the dry season, females exhibited significantly smaller mean core areas than males.
","language":"English","publisher":"American Ornithological Society","doi":"10.1650/7376","usgsCitation":"Takano, L.L., and Haig, S.M., 2004, Seasonal movement and home range of the Mariana Common Moorhen: The Condor, v. 106, no. 3, p. 652-663, https://doi.org/10.1650/7376.","productDescription":"12 p.","startPage":"652","endPage":"663","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":478288,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1650/7376","text":"Publisher Index Page"},{"id":134411,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"106","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ce4b07f02db5fc43e","contributors":{"authors":[{"text":"Takano, Leilani L.","contributorId":149450,"corporation":false,"usgs":false,"family":"Takano","given":"Leilani","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":323897,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haig, Susan M. 0000-0002-6616-7589 susan_haig@usgs.gov","orcid":"https://orcid.org/0000-0002-6616-7589","contributorId":719,"corporation":false,"usgs":true,"family":"Haig","given":"Susan","email":"susan_haig@usgs.gov","middleInitial":"M.","affiliations":[{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true},{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"preferred":true,"id":323896,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}