RT Unpublished Material
T1 Hydrological stability and otter trophic diversity : a scale-insensitive pattern?
A1 Clavero Pineda, Miguel
A1 Prenda Marín, José
A1 Blanco Garrido, Francisco
A1 Delibes Castro, Miguel
AB Two recent works related Eurasian otter (Lutra lutra (L., 1758)) trophic patterns over large areas with thestability of aquatic ecosystems. Higher levels of instability lead to reduced availability and (or) predictability of fish,and consequently, to a decrease in fish consumption by otters. The aim of the present study is to test thesemacrogeographical patterns in otter diet at regional and local scales. We analysed otter diet in Mediterranean streamsin southwestern Iberian Peninsula where clear hydrological stability gradients (related to drainage area or distance tothe sea) could be defined. Hydrological stability was directly related to fish consumption and inversely to otter dietdiversity in terms of occurrence and biomass, both at regional and local scales. The level of stability of aquaticecosystems appears to be a critical indirect factor that modulates otter diet through its effects on fish populations.The resulting trophic patterns are maintained from local to macrogeographical scales
SN 0008-4301
YR 2008
FD 2008
LK http://hdl.handle.net/10272/2981
UL http://hdl.handle.net/10272/2981
LA eng
NO CLAVERO PINEDA, M., PRENDA MARÍN, J., BLANCO GARRIDO, F. y DELIBES CASTRO, M. "Hydrological stability and otter trophic diversity : a scale-insensitive pattern?". Canadian journal of zoology. Vol. 86, n. 10 (octubre 2008) p. 1152-1158. ISSN 0008-4301
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026