STABLE-ISOTOPE ANALYSIS OF CANVASBACK WINTER DIET IN UPPER CHESAPEAKE BAY

A major decline in submerged aquatic vegetation (SAV) in Chesapeake Bay has altered the diet of wintering Canvasbacks (Aythya valisineria) from historically plant to a combination of benthic animal foods, especially the ubiquitous Baltic clam (Macoma balthica), supplemented with anthropogenic corn (...

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Veröffentlicht in:	The Auk 2001-10, Vol.118 (4), p.1008-1017
Hauptverfasser:	Haramis, G. Michael, Jorde, Dennis G, Macko, Stephen A, Walker, Jane L
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal and plant ecology Animal, plant and microbial ecology Animals Anthropogenic factors Aquatic plants Autoecology Aves Benthos Biological and medical sciences Birds Blood Celery Clams Corn Diet Ducks Feeding. Feeding behavior Food Fractionation Fundamental and applied biological sciences. Psychology Isotopes Ornithology Signatures Tubers Vertebrata Vertebrates: anatomy and physiology, studies on body, several organs or systems Winter
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