Environmental and anthropogenic influences on spatiotemporal dynamics of Alosa in Chesapeake Bay tributaries
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چکیده
منابع مشابه
Hypoxia in Chesapeake Bay Tributaries: Worsening effects on Macrobenthic Community Structure in the York River
We assessed the effects of hypoxia on macrobenthic communities in the York and Rappahannock Rivers, Chesapeake Bay, in box-core samples before and after hypoxic episodes in 2003 and 2004. Hypoxia occurred in both years and was associated with a decrease in biomass and a shift in community structure toward opportunistic species in both rivers. Long-term data indicate that the frequency of hypoxi...
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Detectability, the probability of encountering a species at a sampling site, is often overlooked in fisheries research despite its potential to obscure inferences on habitat use and lead to biased estimates of abundance. We used occupancy models to explore factors affecting detectability and occupancy ( ), the probability that a species inhabits a site, for three fishes frequently captured in C...
متن کاملReproductive health of yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay.
Reduced recruitment of yellow perch has been noted for a number of years in certain urbanized watersheds (South and Severn Rivers) of the Chesapeake Bay. Other rapidly developing watersheds such as Mattawoman Creek are more recently showing evidence of reduced recruitment of anadromous fishes. In this study, we used a battery of biomarkers to better document the reproductive health of adult yel...
متن کاملPhytoplankton Productivity in the Tidal Regions of Four Chesapeake Bay (USA) Tributaries
Monthly and annual phytoplankton productivity rates of four Virginia tidal rivers were determined based on a 12-year monitoring study that included sampling stations from tidal freshwater, oligohaline, and mesohaline regions in these rivers. The mean monthly rates and range at these locations were 5.52 (Dec.) to 175.12 (Aug.) mg C m-3 h-1 for tidal freshwater, 12.21 (Jan.) to 149.90 (May) mg C ...
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a U.S. Environmental Protection Agency, Chesapeake Bay Program Office, 410 Severn Avenue, Annapolis, Maryland 21403, USA b Smithsonian Environmental Research Center, P.O. Box 28, 647 Contees Wharf Road, Edgewater, Maryland 21037-0028, USA c Virginia Institute of Marine Science, School of Marine Science, College of William and Mary, 1208 Greate Road, Gloucester Point, Virginia 23062, USA d U.S. ...
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ژورنال
عنوان ژورنال: Ecosphere
سال: 2021
ISSN: 2150-8925,2150-8925
DOI: 10.1002/ecs2.3544