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Year Published: 2009
Effects of cadmium on growth, metamorphosis and gonadal sex differentiation in tadpoles of the African clawed frog, Xenopus laevis
Xenopus laevis larvae were exposed to cadmium (Cd) at 0, 1, 8. 85 or 860 mu g L(-1) in FETAX medium from 0 to 86 d postfertilization. Premetamorphic tadpoles were sampled on day 3 1; pre and prometamorphic tadpoles on day 49; and frogs (NF stage 66) between days 50 and 86. Survival, snout-vent length (SVL), tail length, total length, hindlimb...
Sharma, Bibek; Patino, ReynaldoAttribution: Cooperative Research Units
View Citation
Sharma B. Effects of cadmium on growth, metamorphosis and gonadal sex differentiation in tadpoles of the African clawed frog, Xenopus laevis. Chemosphere (Oxford). 2009-08;76:1048-1055.
Year Published: 2009
Bos grunniens and Bos mutus (Artiodactyla: Bovidae)
Bos grunniens Linnaeus, 1766, and Bos mutus (Przewalski, 1883) are the domestic and wild forms, respectively, of the bovid commonly called the yak. B. mutus inhabits remote high-elevation alpine meadows and alpine steppe in rolling to mountainous terrain in the Tibetan Plateau, and B. grunniens is maintained widely in China and other parts of...
Leslie, David M.; Schaller, George B.Attribution: Cooperative Research Units
Year Published: 2009
Carbon isotope turnover as a measure of arrival time in migratory birds
Arrival time on breeding or non-breeding areas is of interest in many ecological studies exploring fitness consequences of migratory schedules. However, in most field studies, it is difficult to precisely assess arrival time of individuals. Here, we use carbon isotope turnover in avian blood as a technique to estimate arrival time for birds...
Oppel, Steffen; Powell, Abby N.Attribution: Cooperative Research Units
Year Published: 2009
Habitat use by female mallards in the lower Mississippi alluvial valley
Mallard (Anas platyrhynchos) populations in the lower Mississippi Alluvial Valley (LMAV), USA, historically averaged 1.6 million and represented the largest concentrations of wintering mallards in North America. Effective management of this wintering population requires current information on use of habitats. Accordingly, we employed...
Davis, Bruce E.; Afton, Alan D.; Cox, Robert R.Attribution: Cooperative Research Units
View Citation
Davis, BE (Davis, Bruce E.)[ 1 ] ; Afton, AD (Afton, Alan D.)[ 2 ] ; Cox, RR (Cox, Robert R., Jr.)[ 3 ]
Year Published: 2009
Multi-state succession in wetlands: a novel use of state and transition models
The complexity of ecosystems and mechanisms of succession are often simplified by linear and mathematical models used to understand and predict system behavior. Such models often do not incorporate multivariate, nonlinear feedbacks in pattern and process that include multiple scales of organization inherent within real-world systems. Wetlands...
Zweig, Christa L.; Kitchens, Wiley M.Attribution: Cooperative Research Units
Year Published: 2009
West Virginia crayfishes (Decapoda: Cambaridae): observations on distribution, natural history, and conservation
West Virginia's crayfishes have received moderate attention since publication of Jezerinac et al.'s (1995) monograph of the state fauna. Survey efforts were initiated over the summers of 2006 and 2007 to gather voucher material for the Indiana Biological Survey's Crustacean Collection. These collections have provided new information regarding the...
Loughman, Zachary J.; Simon, Thomas P.; Welsh, Stuart A.
Year Published: 2009
Biogeography of Iberian freshwater fishes revisited: The roles of historical versus contemporary constraints
Aim The question of how much of the shared geographical distribution of biota is due to environmental vs. historical constraints remains unanswered. The aim of this paper is to disentangle the contribution of historical vs. contemporary factors to the distribution of freshwater fish species. In addition, it illustrates how quantifying the...
Filipe, Ana F.; Araújo, Miguel B.; Doadrio, Ignacio; Angermeier, Paul L.; Collares-Pereira, Maria J.
Year Published: 2009
Recovery distances of nestling Bald Eagles banded in Florida and implications for natal dispersal and philopatry
I used band recovery data to examine distances between banding and recovery locations for 154 nestling Florida Bald Eagles and discuss the implications for understanding natal dispersal and philopatry in this species. Band recoveries occurred in 23 U.S. states and five Canadian provinces between 1931–2005. Recovery distance from the natal...
Wood, Petra Bohall
Year Published: 2009
Defining optimal freshwater flow for oyster production: effects of freshet rate and magnitude of change and duration on eastern oysters and Perkinsus marinus infection
In coastal Louisiana, the development of large-scale freshwater diversion projects has led to controversy over their effects on oyster resources. Using controlled laboratory experiments in combination with a field study, we examined the effects of pulsed freshwater events (freshet) of different magnitude, duration, and rate of change on oyster...
LaPeyre, Megan K.; Gossman, B.; La Peyre, Jerome F.Attribution: Cooperative Research Units
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La Peyre, Megan K. Defining Optimal Freshwater Flow for Oyster Production: Effects of Freshet Rate and Magnitude of Change and Duration on Eastern Oysters and Perkinsus marinus Infection. Estuaries and coasts 32.3 2009: 522-534. Estuarine Research Federation. 19 Jun 2015.
Year Published: 2009
Does winter region affect spring arrival time and body mass of king eiders in northern Alaska?
Events during the non-breeding season may affect the body condition of migratory birds and influence performance during the following breeding season. Migratory birds nesting in the Arctic often rely on endogenous nutrients for reproductive efforts, and are thus potentially subject to such carry-over effects. We tested whether king eider (...
Powell, Abby N.; Oppel, Steffen
Year Published: 2009
Does mobility explain variation in colonisation and population recovery among stream fishes?
1. Colonisation and population recovery are crucial to species persistence in environmentally variable ecosystems, but are poorly understood processes. After documenting movement rates for several species of stream fish, we predicted that this variable would influence colonisation rates more strongly than local abundance, per cent occupancy, body...
Angermeier, Paul L.; Albanese, Brett; Peterson, James
Year Published: 2009
FishTraits Database
The need for integrated and widely accessible sources of species traits data to facilitate studies of ecology, conservation, and management has motivated development of traits databases for various taxa. In spite of the increasing number of traits-based analyses of freshwater fishes in the United States, no consolidated database of traits of this...
Angermeier, Paul L.; Frimpong, Emmanuel A.Attribution: Cooperative Research Units
View Citation
FishTraits Database; 2009; Web site; Angermeier, Paul L.; Frimpong. Emmanuel A.
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Locations
Cooperative Research Units Program Headquarters
12201 Sunrise Valley Dr
Reston, VA 20192
United States
Phone: (703) 648 - 4260
Fax: (703) 648 - 4269
Contacts
Minnesota Cooperative Fish and Wildlife Research Unit Leader -- Research Wildlife Biologist
Minnesota Cooperative Fish and Wildlife Research Unit
Email: dea@usgs.gov
Phone: 612-626-1222
Virginia Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Virginia Cooperative Fish and Wildlife Research Unit
Email: biota@usgs.gov
Phone: 540-231-4501
Texas Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Wildlife Biologist
Texas Cooperative Fish and Wildlife Research Unit
Email: cboal@usgs.gov
Phone: 806-834-6536
Arizona Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
Arizona Cooperative Fish and Wildlife Research Unit
Email: sbonar@usgs.gov
Phone: 520-621-1193
Oklahoma Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fisheries Biologist
Oklahoma Cooperative Fish and Wildlife Research Unit
Email: skbrewer@usgs.gov
Phone: 405-744-9841
Utah Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
Utah Cooperative Fish and Wildlife Research Unit
Email: pbudy@usgs.gov
Phone: 435-797-7564
New Mexico Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Wildlife Biologist
New Mexico Cooperative Fish and Wildlife Research Unit
Email: jwcain@usgs.gov
Phone: 575-646-3382
New Mexico Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
New Mexico Cooperative Fish and Wildlife Research Unit
Email: ccaldwel@usgs.gov
Phone: 575-646-8126
New Mexico Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Wildlife Biologist
New Mexico Cooperative Fish and Wildlife Research Unit
Email: scarleton@usgs.gov
Phone: 575-646-7196
Florida Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Wildlife Biologist
Florida Cooperative Fish and Wildlife Research Unit
Email: rayc@usgs.gov
Phone: 352-846-0545
Information Specialist
Ecosystems: Cooperative Research Units
Email: dchilds@usgs.gov
Phone: 703-648-4080
North Carolina Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Wildlife Biologist
North Carolina Cooperative Fish and Wildlife Research Unit
Email: jaime_collazo@usgs.gov
Phone: 919-515-8837
Idaho Cooperative Fish and Wildlife Research Unit Leader -- Research Wildlife Biologist
Idaho Cooperative Fish and Wildlife Research Unit
Email: cconway@usgs.gov
Phone: 208-885-6176
Administrative Officer
Ecosystems: Cooperative Research Units
Email: scoulby@usgs.gov
Phone: 703-648-4361
Administrative Program Specialist
Ecosystems: Cooperative Research Units
Email: brenda_croston@usgs.gov
Phone: 703-648-4263
Arizona Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Fish Biologist
Arizona Cooperative Fish and Wildlife Research Unit
Email: mculver@usgs.gov
Phone: 520-626-3775
Senior Program Biologist
Ecosystems: Cooperative Research Units
Email: ddennerline@usgs.gov
Phone: 706-705-6042
Pennsylvania Cooperative Fish and Wildlife Research Unit Leader -- Research Wildlife Biologist
Pennsylvania Cooperative Fish and Wildlife Research Unit
Email: drd11@usgs.gov
Phone: 814-865-4511
Vermont Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Wildlife
Vermont Cooperative Fish and Wildlife Research Unit
Email: tdonovan@usgs.gov
Phone: 802-656-2516
Oregon Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Ecologist
Oregon Cooperative Fish and Wildlife Research Unit
Email: cdugger@usgs.gov
Phone: 541-737-2473
Utah Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Wildlife Biologist
Utah Cooperative Fish and Wildlife Research Unit
Email: tce@usgs.gov
Phone: 435-797-2529
Alaska Cooperative Fish and Wildlife Research Unit Assistant Unit Leader - Fish, Research Fish Biologist
Alaska Cooperative Fish and Wildlife Research Unit
Email: jfalke@usgs.gov
Phone: 907-474-6044
Virginia Cooperative Fish and Wildlife Research Unit Unit Leader -- Research Wildlife Biologist
Virginia Cooperative Fish and Wildlife Research Unit
Email: wford@usgs.gov
Phone: 540-231-5927
New York Cooperative Fish and Wildlife Research Unit Leader -- Research Wildlife Biologist
New York Cooperative Fish and Wildlife Research Unit
Email: afuller@usgs.gov
Phone: 607-255-2841
Assistant Unit Leader -- Research Ecologist
Minnesota Cooperative Fish and Wildlife Research Unit
Email: dcf@usgs.gov
Phone: 612-625-5256
Texas Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Texas Cooperative Fish and Wildlife Research Unit
Email: tgrabowski@usgs.gov
Phone: 806-834-4388
Supervisor, Cooperative Research Units
Ecosystems: Cooperative Research Units
Email: barry_grand@usgs.gov
Phone: 344-844-4796
Alaska Cooperative Fish and Wildlife Research Unit Leader -- Research Wildlife Biologist
Alaska Cooperative Fish and Wildlife Research Unit
Email: ffdbg@usgs.gov
Phone: 907-474-5067
Montana Cooperative Fishery Research Unit Assistant Unit Leader -- Research Fish Biologist
Montana Cooperative Fishery Research Unit
Email: cguy@usgs.gov
Phone: 406-994-3491
Kansas Cooperative Fish and Wildlife Research Unit Leader -- Research Ecologist
Kansas Cooperative Fish and Wildlife Research Unit
Email: dhaukos@usgs.gov
Phone: 785-532-5761
California Cooperative Fish and Wildlife Research Unit Assistant Unit Leader - Fish
California Cooperative Fish and Wildlife Research Unit
Email: mhenderson@usgs.gov
Phone: 707-826-5644
Colorado Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Ecologist
Colorado Cooperative Fish and Wildlife Research Unit
Email: mhooten@usgs.gov
Phone: 970-491-1415
Alabama Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Alabama Cooperative Fish and Wildlife Research Unit
Email: eirwin@usgs.gov
Phone: 334-844-9190
Georgia Cooperative Fish and Wildlife Research Unit Assistant Unit Leader-Fish -- Research Fish Biologist
Georgia Cooperative Fish and Wildlife Research Unit
Email: bjirwin@usgs.gov
Phone: 706-542-0790
Wisconsin Cooperative Fishery Research Unit Assistant Unit Leader -- Research Fish Biologist
Wisconsin Cooperative Fishery Research Unit
Email: disermann@usgs.gov
Phone: 715-295-8878
Georgia Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
Georgia Cooperative Fish and Wildlife Research Unit
Email: jennings@usgs.gov
Phone: 706-542-4837
South Carolina Cooperative Fish and Wildlife Research Unit Leader -- Research Wildlife Biologist
South Carolina Cooperative Fish and Wildlife Research Unit
Email: pjodice@usgs.gov
Phone: 864-656-6190
Colorado Cooperative Fish and Wildlife Research Unit Assistant Unit Leader, Research Ecologist
Colorado Cooperative Fish and Wildlife Research Unit
Email: wkendall@usgs.gov
Phone: 970-491-7066
Louisiana Cooperative Fish and Wildlife Research Unit Leader -- Research Wildlife Biologist
Louisiana Cooperative Fish and Wildlife Research Unit
Email: sking@usgs.gov
Phone: 225-578-7564
North Carolina Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
North Carolina Cooperative Fish and Wildlife Research Unit
Email: tkwak@usgs.gov
Phone: 919-513-2696
Louisiana Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Louisiana Cooperative Fish and Wildlife Research Unit
Email: mlapeyre@usgs.gov
Phone: 225-578-4180
Wisconsin Cooperative Fishery Research Unit Assistant Unit Leader - Fish
Wisconsin Cooperative Fishery Research Unit
Email: wlarson@usgs.gov
Phone: 715-346-3150
Maine Cooperative Fish and Wildlife Research Unit Leader -- Research Wildlife Biologist
Maine Cooperative Fish and Wildlife Research Unit
Email: cyndy_loftin@usgs.gov
Phone: 207-581-2843
Oklahoma Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Fisheries
Oklahoma Cooperative Fish and Wildlife Research Unit
Email: jmlong@usgs.gov
Phone: 405-744-6342
Arkansas Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Fish Biologist
Arkansas Cooperative Fish and Wildlife Research Unit
Email: danmag@usgs.gov
Phone: 479-575-5449
Montana Cooperative Wildlife Research Unit Assistant Unit Leader -- Research Wildlife Biologist
Montana Cooperative Wildlife Research Unit
Email: tmartin@usgs.gov
Phone: 406-243-4393
Assistant Unit Leader -- Research Fish Biologist
Kansas Cooperative Fish and Wildlife Research Unit
Email: mather@usgs.gov
Phone: 413-329-2105
West Virginia Cooperative Fish and Wildlife Research Unit Unit Leader -- Research Fish Biologist
West Virginia Cooperative Fish and Wildlife Research Unit
Email: pmazik@usgs.gov
Phone: 304-293-4943
Alaska Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Ecology
Alaska Cooperative Fish and Wildlife Research Unit
Email: ffadm@usgs.gov
Phone: 907-474-6242
Physical Scientist, Business Information Systems
Office of Planning and Programming, Water Mission Area
Email: kmcswain@usgs.gov
Phone: 919-571-4022
Mississippi Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Mississippi Cooperative Fish and Wildlife Research Unit
Email: smiranda@usgs.gov
Phone: 662-325-4763
Montana Cooperative Wildlife Research Unit Leader -- Research Wildlife Biologist
Montana Cooperative Wildlife Research Unit
Email: mmitchel@usgs.gov
Phone: 406-243-4390
Vermont Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
Vermont Cooperative Fish and Wildlife Research Unit
Email: dparrish@usgs.gov
Phone: 802-656-2693
Texas Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
Texas Cooperative Fish and Wildlife Research Unit
Email: r.patino@usgs.gov
Phone: 806-834-6483
Missouri Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
Missouri Cooperative Fish and Wildlife Research Unit
Email: cpaukert@usgs.gov
Phone: 573-882-3524
Oregon Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Oregon Cooperative Fish and Wildlife Research Unit
Email: james_peterson@usgs.gov
Phone: 541-737-1963
Iowa Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Iowa Cooperative Fish and Wildlife Research Unit
Email: cpierce@usgs.gov
Phone: 515-294-3159
Nebraska Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Nebraska Cooperative Fish and Wildlife Research Unit
Email: kpope@usgs.gov
Phone: 402-472-7028
Florida Cooperative Fish and Wildlife Research Unit Leader -- Research Wildlife Biologist
Florida Cooperative Fish and Wildlife Research Unit
Email: abby_powell@usgs.gov
Phone: 352-846-0543
Idaho Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Idaho Cooperative Fish and Wildlife Research Unit
Email: mquist@usgs.gov
Phone: 208-885-4064
Wisconsin Cooperative Wildlife Research Unit Leader Research Wildlife Biologist
Wisconsin Cooperative Wildlife Research Unit
Email: caribic@usgs.gov
Phone: 608-263-6556
Tennessee Cooperative Fishery Research Unit Leader -- Research Fisheries Biologist
Tennessee Cooperative Fishery Research Unit
Email: mwrogers@usgs.gov
Phone: 931-372-3032
Missouri Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Ecologist
Missouri Cooperative Fish and Wildlife Research Unit
Email: arosenberger@usgs.gov
Phone: 573-882-9653
South Carolina Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Wildlife
South Carolina Cooperative Fish and Wildlife Research Unit
Email: bross@usgs.gov
Phone: 864-656-4141
Massachusetts Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Fish
Massachusetts Cooperative Fish and Wildlife Research Unit
Email: aroy@usgs.gov
Phone: 413-545-4895
Mississippi Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
Mississippi Cooperative Fish and Wildlife Research Unit
Email: hschramm@usgs.gov
Phone: 662-325-7495
New York Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Fish / Ecology
New York Cooperative Fish and Wildlife Research Unit
Email: ssethi@usgs.gov
Phone: 607-255-1895
South Dakota Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Ecologist
South Dakota Cooperative Fish and Wildlife Research Unit
Email: jstafford@usgs.gov
Phone: 605-688-5759
Administrative Program Specialist
Ecosystems: Cooperative Research Units
Email: mthode@usgs.gov
Phone: 703-648-4265
Supervisor, Cooperative Research Units
Ecosystems: Cooperative Research Units
Email: mtome@usgs.gov
Phone: 304-724-4411
Mississippi Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Wildlife Biologist
Mississippi Cooperative Fish and Wildlife Research Unit
Email: fvilella@usgs.gov
Phone: 662-325-0784
Pennsylvania Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Pennsylvania Cooperative Fish and Wildlife Research Unit
Email: twagner@usgs.gov
Phone: 814-865-4511
Pennsylvania Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Ecologist
Pennsylvania Cooperative Fish and Wildlife Research Unit
Email: wwalter@usgs.gov
Phone: 814-867-4763
Missouri Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Ecologist
Missouri Cooperative Fish and Wildlife Research Unit
Email: ewebb@usgs.gov
Phone: 573-882-2591
West Virginia Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
West Virginia Cooperative Fish and Wildlife Research Unit
Email: swelsh@usgs.gov
Phone: 304-293-5006
Supervisor, Cooperative Research Units
Ecosystems: Cooperative Research Units
Email: kwhalen@usgs.gov
Phone: 703-269-7711
Colorado Cooperative Fish and Wildlife Research Unit Leader -- Research Fish Biologist
Colorado Cooperative Fish and Wildlife Research Unit
Email: danaw@usgs.gov
Phone: 970-491-1414
Alaska Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Alaska Cooperative Fish and Wildlife Research Unit
Email: mwipfli@usgs.gov
Phone: 907-474-6654
West Virginia Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Wildlife Biologist
West Virginia Cooperative Fish and Wildlife Research Unit
Email: pbwood@usgs.gov
Phone: 304-293-5090
Montana Cooperative Fishery Research Unit Leader -- Research Fish Biologist
Montana Cooperative Fishery Research Unit
Email: zale@usgs.gov
Phone: 406-994-2380
Maine Cooperative Fish and Wildlife Research Unit Assistant Unit Leader -- Research Fish Biologist
Maine Cooperative Fish and Wildlife Research Unit
Email: jzydlewski@usgs.gov
Phone: 207-581-2853