Kahlert, Maria
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Abstract
We examined in situ the fate of N in the epilithon and a grazer community in the N-limited rocky littoral of Lake Erken, Sweden. The grazer community consisted of the sessile caddisfly larva Tinodes waeneri (L.) plus its gallery. The gallery consisted of a web that is spun by the larva plus the microorganisms (mostly algae) closely associated with the web. We applied N-15 in the field and recorded N-15 uptake and retention time. The galleries took up N-15 faster from the overlying water and retained N-15 1 wk longer than the surrounding epilithon. These results supported our hypothesis that effective N use through the Tinodes community by recycling may alleviate N limitation and enhance biomass production of the gallery algae.
Keywords
nutrient recycling; nitrogen; littoral; Tinodes waeneri; nutrient limitation; epilithon
Published in
Journal of the North American Benthological Society
1999, volume: 18, number: 3, pages: 363-369
Publisher: NORTH AMER BENTHOLOGICAL SOC
SLU Authors
UKÄ Subject classification
Environmental Sciences and Nature Conservation
Fish and Aquacultural Science
Publication identifier
- DOI: https://doi.org/10.2307/1468449
Permanent link to this page (URI)
https://res.slu.se/id/publ/23313