Abstract：
:Transformation of the river catchment and the river bed cause significant changes in the functioning of river ecosystems. The main effects of anthropogenic transformations are hydrological changes, such as lower current velocity or an increase of nutrient content, and higher temperature. Zooplankton reacts rapidly to the new environmental conditions in rivers, increasing its richness and abundance. We tried to answer two questions: what type of catchment use has a greater influence on the zooplankton communities in a river and how do dam impoundments influence the zooplankton communities downstream? The study was conducted in the Corgo river (drainage of the Douro river, Northern Portugal) at 17 sampling sites in the lotic, free-flowing sections. Crustaceans present in the Corgo can attain relatively high densities in the rural section, which offers them better trophic conditions. The urban catchment use and the presence of dams have a greater impact on the rotifer density and the increase of zooplankton density downstream. The results of this study confirm that zooplankton properties allow for the evaluation of the degree of river-bed transformation.
journal_name
Int J Environ Res Public Healthauthors
Sługocki Ł,Czerniawski R,Kowalska-Góralska M,Senze M,Reis A,Carrola JS,Teixeira CAdoi
10.3390/ijerph16010020subject
Has Abstractpub_date
2018-12-21 00:00:00issue
1eissn
1661-7827issn
1660-4601pii
ijerph16010020journal_volume
16pub_type
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