INVESTIGADORES
ALBARIÑO Ricardo Javier
artículos
Título:
Does predation by the introduced rainbow trout cascade down to detritus and algae in a forested small stream in Patagonia?
Autor/es:
BURIA, L.M.; ALBARIÑO, R.J.; DÍAZ VILLANUEVA, V.; MODENUTTI, B.E.; BALSEIRO, E.G.
Revista:
HYDROBIOLOGIA
Editorial:
SPRINGER
Referencias:
Año: 2010 p. 161 - 161
ISSN:
0018-8158
Resumen:
Cascade effects of an exotic predator, the rainbow trout (Oncorhynchus mykiss), on periphyton and leaf litter were analysed in a headwater, forested stream of Andean Patagonia (Argentina). We conducted seasonal field sampling and two field experiments measuring leaf litter mass, periphyton biomass and macroinvertebrate biomass in relation to the presence and absence of rainbow trout. In the field survey, the presence of trout influenced resource mass: leaf litter (60% decrease in summer, P = 0.024)and periphyton (tenfold increase in chlorophyll a, P
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