The Trophic Significance of Epilithic Algal Production in a Fertilized Tundra River Ecosystem

Fertilization of a pristine tundra river with phosphorus and nitrogen changed the nitrogen and carbon stable isotope ratios in epilithic algae. Determination of δ15N and δ13C values in consumers allowed this algal organic matter to be traced in the food web for several kilometers downstream of the f...

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Veröffentlicht in:	Limnology and oceanography 1993-06, Vol.38 (4), p.872-878
Hauptverfasser:	Peterson, Bruce, Fry, Brian, Deegan, Linda, Hershey, Anne
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult insects Algae Animal and plant ecology Animal, plant and microbial ecology Aquatic insects Biological and medical sciences Fertilization Fresh water ecosystems Freshwater Freshwater fishes Fundamental and applied biological sciences. Psychology Insect larvae Isotopes Marine Nitrogen Quaternary ammonium compounds Synecology Tundras
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