Cooperative Research Units

Home

Programs L2 Landing Page

Filter Total Items: 2,921
Publication Thumbnail
Year Published: 2011

Microhabitat use and seasonal movements of hatchery-reared and wild shortnose sturgeon in the Savannah River, South Carolina--Georgia

Radio and acoustic telemetry were used to monitor the seasonal movement of hatchery-reared and wild shortnose sturgeon (622-927 mm total length) in the Savannah River. Diploid, and sterile hatchery-reared shortnose sturgeon, and wild shortnose sturgeon showed apparent similar seasonal patterns of movement within the river. We were unable to detect...

Trested, D.G.; Ware, K.M.; Bakal, R.; Isely, J.J.
Trested D. Microhabitat use and seasonal movements of hatchery-reared and wild shortnose sturgeon in the Savannah River, South Carolina - Georgia Seasonal movements of hatchery-reared and wild shortnose sturgeon. Journal of applied ichthyology. 2011-04;27:454-461.

Publication Thumbnail
Year Published: 2011

Identification and evaluation of shark bycatch in Georgia’s commercial shrimp trawl fishery with implications for management

Many US states have recreational and commercial fisheries that occur in nursery areas occupied by subadult sharks and can potentially affect their survival. Georgia is one of few US states without a directed commercial shark fishery, but the state has a large, nearshore penaeid shrimp trawl fishery in which small sharks occur as bycatch. During...

Belcher, C.N.; Jennings, Cecil A.
BELCHER C. Identification and evaluation of shark bycatch in Georgia’s commercial shrimp trawl fishery with implications for management IDENTIFICATION AND EVALUATION OF SHARK BYCATCH. Fisheries management and ecology. 2011-04;18:104-112.

Publication Thumbnail
Year Published: 2011

Implications of community concordance for assessing stream integrity at three nested spatial scales in Minnesota, U.S.A.

1. Fish and invertebrate assemblage data collected from 670 stream sites in Minnesota (U.S.A.) were used to calculate concordance across three nested spatial scales (statewide, ecoregion and catchment). Predictive taxa richness models, calibrated using the same data, were used to evaluate whether concordant communities exhibited similar trends in...

Dolph, Christine L.; Huff, David D.; Chizinski, Christopher J.; Vondracek, Bruce C.

Publication Thumbnail
Year Published: 2011

Development and assessment of a landscape-scale ecological threat index for the Lower Colorado River Basin

Anthropogenic disturbances impact freshwater biota but are rarely incorporated into conservation planning due to the difficulties in quantifying threats. There is currently no widely accepted method to quantify disturbances, and determining how to measure threats to upstream catchments using disturbance metrics can be time consuming and subjective...

Paukert, Craig P.; Pitts, K.L.; Whittier, Joanna B.; Olden, Julian D.
Paukert C. Development and assessment of a landscape-scale ecological threat index for the Lower Colorado River Basin. Ecological indicators. 2011;11:304-310.

Publication Thumbnail
Year Published: 2011

Effects of spatial disturbance on common loon nest site selection and territory success

The common loon (Gavia immer) breeds during the summer on northern lakes and water bodies that are also often desirable areas for aquatic recreation and human habitation. In northern New England, we assessed how the spatial nature of disturbance affects common loon nest site selection and territory success. We found through classification and...

McCarthy, Kyle P.; DeStefano, Stephen

Publication Thumbnail
Year Published: 2011

FishTraits: a database of ecological and life-history traits of freshwater fishes of the United States

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.

Publication Thumbnail
Year Published: 2011

Survival and harvest-related mortality of white-tailed deer in Massachusetts

We monitored 142 radiocollared adult (≥1.0 yr old) white‐tailed deer (Odocoileus virginianus) in 3 study areas of Massachusetts, USA, to estimate annual survival and mortality due to legal hunting. We then applied these rates to deer harvest information to estimate deer population trends over time, and compared these to trends derived solely from...

McDonald, J.E.; DeStefano, Stephen; Gaughan, C.; Mayer, M.; Woytek, W.A.; Christensen, S.; Fuller, T.K.

Publication Thumbnail
Year Published: 2011

Age, growth, mortality, and abundance of lake sturgeon in the Grasse River, New York, USA

An increased understanding of lake sturgeon (Acipenser fulvescens) population dynamics is a key requirement for successful management efforts. Little is known regarding the Grasse River population of lake sturgeon except that it is one of a few populations in New York State where spawning has been documented. Thus our purpose was to assess the...

Trested, D.G.; Isely, J.J.
Trested D. Age, growth, mortality, and abundance of lake sturgeon in the Grasse River, New York, USA Age, growth, mortality, and abundance of lake sturgeon. Journal of applied ichthyology. 2011-02;27:13-19.

Publication Thumbnail
Year Published: 2011

Assessing the effects of catch and release regulations on a quality adfluvial brook trout population using a computer based age-structure model

Assessing the Effects of Catch-and-Release Regulations on a Brook Trout Population Using an Age-Structured Model: North American Journal of Fisheries Management: Vol 30, No 6 var _prum=[['id','54ff88bcabe53dc41d1004a5'],['mark','firstbyte',(new Date()).getTime()]];(function(){var s=document.getElementsByTagName('script')[0],p=document....

Risley, Casey A.L. ; Zydlewski, Joseph D.

Publication Thumbnail
Year Published: 2011

Influence of Physiochemical and watershed characteristics on mercury concentration in walleye, Sander vitreus, M.

Elevated mercury concentration has been documented in a variety of fish and is a growing concern for human consumption. Here, we explore the influence of physiochemical and watershed attributes on mercury concentration in walleye (Sander vitreus, M.) from natural, glacial lakes in South Dakota. Regression analysis showed that water quality...

Hayer, Cari-Ann; Chipps, Steven R.; Stone, James J.

Publication Thumbnail
Year Published: 2011

Postfledging survival of Grasshopper Sparrows in grasslands managed with fire and grazing

More accurate estimates of survival after nestlings fledge are needed for population models to be parameterized and population dynamics to be understood during this vulnerable life stage. The period after fledging is the time when chicks learn to fly, forage, and hide from predators. We monitored postfledging survival, causespecific mortality, and...

Hovick, Torre J.; Miller, James R.; Koford, Rolf R.; Engle, David M.; Debinski, Diane M.

Publication Thumbnail
Year Published: 2011

Nest success of northern bobwhite on managed and unmanaged landscapes in southeast Iowa

Range‐wide declines in northern bobwhite populations (Colinus virginianus) have been attributed to concomitant loss of breeding habitat. Bobwhite management efforts to restore this habitat resource can be informed by empirical studies of associations between breeding success and multi‐scale habitat attributes. We compared bobwhite nest success in...

Potter, Lisa M.; Otis, David L.; Bogenschutz, Todd R.