Title of article :
Oyster mortality in Delaware Bay: Impacts and recovery from Hurricane Irene and Tropical Storm Lee
Author/Authors :
Munroe، نويسنده , , D. and Tabatabai، نويسنده , , A. and Burt، نويسنده , , I. and Bushek، نويسنده , , D. and Powell، نويسنده , , E.N. and Wilkin، نويسنده , , J.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2013
Pages :
11
From page :
209
To page :
219
Abstract :
One predicted consequence of climate change is increasing variability of local weather extremes such as the frequency and intensity of storms. In August and September of 2011, Hurricane Irene and Tropical Storm Lee generated extreme flooding in the Delaware River watershed that produced prolonged baywide low salinity and consequent historically-high mortalities for the oyster stock in the upper reaches of Delaware Bay. The dynamics, consequences, and projections for recovery from the anomalously high oyster mortality that occurred as a consequence are reported using a combination of physical modeling, field sampling, and metapopulation dynamics modeling. Monthly mortality of 10% and 55% on the upper bay beds (Arnolds and Hope Creek respectively) exceeded the longer-term average at those locations and was associated with a continuous low salinity (<7) exposure of greater than 20 days. Population recovery projections based on metapopulation modeling suggests that recovery will take approximately 10 years for the uppermost beds. Clear understanding of the circumstances leading to this high population-level impact on oysters is important because anticipated future conditions of increased storm frequency will intensify the challenge such events pose for the management of fishery and aquaculture resources, and the siting of restoration efforts.
Keywords :
Crassostrea virginica , freshet , mortality , Salinity , hurricane , Fishery
Journal title :
Estuarine, Coastal and Shelf Science
Serial Year :
2013
Journal title :
Estuarine, Coastal and Shelf Science
Record number :
1945866
Link To Document :
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