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.
| Original language | English |
|---|---|
| Pages (from-to) | 363-369 |
| Number of pages | 7 |
| Journal | Journal of the North American Benthological Society |
| Volume | 18 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1999 |
Keywords
- nutrient recycling
- nitrogen
- littoral
- Tinodes waeneri
- nutrient limitation
- epilithon
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