Sources of carbon and sulfur nutrition for consumers in three meromictic lakes of New York State.
The trophic importance of bacterioplankton as a source of carbon and sulfur nutrition for consumers in  meromictic lakes was tested using stable carbon (delta 13C) and sulfur (delta 34S) isotopic measurements.  Studies in three lakes near Syracuse, New York, showed that most consumers ultimately derive their C and S nutrition from a mixture of terrestrial detritus, phytoplankton, and littoral vegetation, rather than from bacterioplankton.  Food webs in these meromictic lakes are thus similar to those in other lakes that lack dense populations of bacterioplankton.
Fry
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Department of Biology, Indiana University, Bloomington 47405, USA.
D000818:Animals; D002244:Carbon / Q000032:analysis* / Q000378:metabolism; D002247:Carbon Isotopes; D019414:Chlorobi; D002841:Chromatiaceae; D017753:Ecosystem; D005399:Fishes; D005618:Fresh Water; D008027:Light; D009518:New York; D010933:Plankton; D010944:Plants; D013431:Sulfates / Q000032:analysis / Q000378:metabolism; D013440:Sulfides / Q000032:analysis / Q000378:metabolism; D013455:Sulfur / Q000032:analysis* / Q000378:metabolism; D013460:Sulfur Isotopes; D013696:Temperature; D014871:Water Microbiology
D002247:Carbon Isotopes; D013431:Sulfates; D013440:Sulfides; D013460:Sulfur Isotopes; D013455:Sulfur; D002244:Carbon