Abstract
Sweet gale (Myrica gale), speckled alder (Alnus rugosa), and trembling aspen (Populus tremuloides) leaves were incubated in situ on artificial substrates in the oligotrophic acid waters of the Canadian Shield (James Bay, Quebec).
Shredders preferentially chose leafy substrates when compared to leafless controls. The biomass and total number of the main colonizing invertebrates (Chironomidae, Ephemeroptera) were greater upon alder and aspen than upon sweet gale leaves, probably because of the latter's resistance to decomposition. This resistance results in a greater period of nutriment availability allowing a continuum in the use of alimentary resources by macroinvertebrates.
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Richard, Y., Moreau, G. Utilisation des feuilles de différentes espèces d'arbres (peuplier, aulne, myrique) par la faune benthique dans des eaux oligotrophes du Bouclier canadien. Hydrobiologia 96, 77–89 (1982). https://doi.org/10.1007/BF00006280
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DOI: https://doi.org/10.1007/BF00006280