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Summer oxygen depletion in a diked New England estuary

Estuaries

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Abstract

The diked and freshened Herring River estuary (Wellfleet, Massachusetts) experiences regular summer hypoxia and one- to three-week periods of main stream anoxia, often accompanied by fish kills. Stream hypoxia results from the temperature-dependent increase in oxygen demand of organic matter released by diked salt marsh deposits; periods of total anoxia are induced by heavy rains which increase the runoff of wetland organic matter. Historic reductions in tidal flushing have extended the low salinity region of the estuary normally characterized by high organic loads and minimal flushing. Recurrent main stream anoxia has depressed both migratory and resident aquatic fauna.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Summer oxygen depletion in a diked New England estuary
Series title:
Estuaries
Volume
14
Issue:
2
Year Published:
1991
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
122-129
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Estuaries
First page:
122
Last page:
129
Number of Pages:
8