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Seasonal changes of benthic communities in a temporary stream of Ibiza (Balearic Islands


Cambios estacionales de las comunidades bentonicas en un río temporal de Ibiza (Islas Baleares)
Se han estudiado los cambios estacionales de las comunidades bentonicas (diatomeas e invertebrados) en un arroyo temporal de la isla de Ibiza (Islas Baleares, Espana). Los par ˜ ametros f ´ ´ısico-qu´ımicos, ´ındices diatomologicos de calidad y algunos metricos de invertebrados se han utilizado para describir e identificar los cambios temporales que se observan en las comunidades bentonicas. Se han identificado un total de 43 taxones de diatomeas y 51 taxones de invertebrados. Unicamente 4 especies aparecen en todas las muestras: Achnanthidium minutissimum, Diploneis oblongella, Navicula veneta y Nitzschia inconspicua. La comunidad de invertebrados estuvo dominada por los ordenes Diptera, Oligochaeta y Gastropoda a lo largo del período de muestreo. Los cambios en los parametros f íısico-químicos del agua y los eventos hidrologicos determinaron la estructura de la comunidad bentonica en este río temporal.
Palabras clave: Diatomeas, Ibiza, invertebrados, isla mediterranea, ríıos temporales.

Garcia, L  et al. (2008) Limnetica, 27 (2)
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