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 sup15/supN in the field and recorded sup15/supN uptake and retention time. The galleries took up sup15/supN faster from the overlying water and retained sup15/supN 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

Published in

Journal of the North American Benthological Society
1999, Volume: 18, number: 3, pages: 363-369
Publisher: NORTH AMER BENTHOLOGICAL SOC

SLU Authors

• Kahlert, Maria

  • Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Environmental Sciences related to Agriculture and Land-use
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