文章基本信息

标题：Factors Affecting Macroinvertebrate Distribution in a Mediterranean Intermittent Stream
本地全文：下载
作者：Alessio Fonnesu ; Letizia Sabetta ; Alberto Basset 等
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：2005
卷号：20
期号：4
页码：641-647
DOI：10.1080/02705060.2005.9664786
出版社：Taylor & Francis
摘要：The relative influence of water regime and other environmental factors on the organization of benthic macroinvertebrates was studied over three years in a small intermittent river basin (River Pula) in Sardinia. The intermittent nature of the led to high spatial and temporal variability of abiotic characteristics. Twenty-eight invertebrate taxa accounted for 90% of the sampled individuals; and of there four (Chironominae, Caenis luctuosa, Diamesinae, Protonemura ichnusae) accounted for more than 50% of the total density. Canonical correspondence analysis showed that 34.6% of the biological variance was accounted for by abiotic factors and that different environmental features, including sediment structure and stream order, had a larger influence on benthic macroinvertebrate distribution and abundance than the intermittent water regime, even though local drought events completely disrupted the macroinvertebrate community.