Spatio-temporal distribution and ecological preferences of coexisting hydropsychid species (Trichoptera) in two Mediterranean river basins (S Spain)

Prenda Marín, José; Toja Santillana, Julia; Gallardo Mayenco, Alfonso

Author

Prenda Marín, José ; Toja Santillana, Julia; Gallardo Mayenco, Alfonso
Publication Date

1998
Citation

GALLARDO-MAYENCO, A., PRENDA MARÍN, J., TOJA SANTILLANA, J.: “Spatio-temporal distribution and ecological preferences of coexisting hydropsychid species (Trichoptera) in two Mediterranean river basins (S Spain)”. International Review of Hydrobiology, vol. 83, n. 2, 1998, pp. 123–134. WILEY-V C H VERLAG GMBH. ISSN 1434-2944.
Abstract

The hydropsychids of two Mediterranean river basins in southern Spain (Guadaira and Guadalete) were investigated from January 1988 to January 1989. The distribution of hydropsychids along an environmental gradient related to altitude varied depending on species. Two distinct species assemblages were observed, one located in the lower altitude sites (the "downstream assemblage" comprising Hydropsyche pictetorum, Hydropsyche exocellata and Cheumatopsyche lepida) and the other in the upper-most areas (the "upstream assemblage" comprising Hydropsyche punica, Hydropsyche infernalis, Hydropsyche instabilis), which displayed a statistically significant preference for this type of habitat. Finally, H. pictetorum, selected the lowest sites. From a temporal point of view most species displayed a high variability in density dynamics between sites, suggesting a strong plasticity in life-cycle phenology.
URI

http://hdl.handle.net/10272/4179

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Fichero	Tamaño	Formato	Ver	Description
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Spatio-temporal distribution and ecological preferences of coexisting hydropsychid species (Trichoptera) in two Mediterranean river basins (S Spain)

Author

Prenda Marín, José UHU Authority

; Toja Santillana, Julia; Gallardo Mayenco, Alfonso

Publication Date

1998

Citation

GALLARDO-MAYENCO, A., PRENDA MARÍN, J., TOJA SANTILLANA, J.: “Spatio-temporal distribution and ecological preferences of coexisting hydropsychid species (Trichoptera) in two Mediterranean river basins (S Spain)”. International Review of Hydrobiology, vol. 83, n. 2, 1998, pp. 123–134. WILEY-V C H VERLAG GMBH. ISSN 1434-2944.

Abstract

The hydropsychids of two Mediterranean river basins in southern Spain (Guadaira and Guadalete) were investigated from January 1988 to January 1989. The distribution of hydropsychids along an environmental gradient related to altitude varied depending on species. Two distinct species assemblages were observed, one located in the lower altitude sites (the "downstream assemblage" comprising Hydropsyche pictetorum, Hydropsyche exocellata and Cheumatopsyche lepida) and the other in the upper-most areas (the "upstream assemblage" comprising Hydropsyche punica, Hydropsyche infernalis, Hydropsyche instabilis), which displayed a statistically significant preference for this type of habitat. Finally, H. pictetorum, selected the lowest sites. From a temporal point of view most species displayed a high variability in density dynamics between sites, suggesting a strong plasticity in life-cycle phenology.