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| Content Provider | Springer Nature Link |
|---|---|
| Author | Perbiche Neves, Gilmar gueira, Marcos Gomes |
| Copyright Year | 2012 |
| Abstract | Copepod assemblages from two cascade reservoirs were analyzed during two consecutive years. The upstream reservoir (Chavantes) is a storage system with a high water retention time (WRT of 400 days), and the downstream one (Salto Grande) is a run-of-river system with only 1.5 days WRT. Copepod composition, richness, abundance, and diversity were correlated with the limnological variables and the hydrological and morphometric features. Standard methods were employed for zooplankton sampling and analysis (vertical 50-μm net hauls and counting under a stereomicroscope). Two hypotheses were postulated and confirmed through the data obtained: (1) compartmentalization is more pronounced in the storage reservoir and determines the differences in the copepod assemblage structure; and (2) the assemblages are more homogeneous in the run-of-river reservoir, where the abundance decreases because of the predominance of washout effects. For both reservoirs, the upstream zone is more distinctive. In addition, in the smaller reservoir the influence of the input from tributaries is stronger (turbid waters). Richness did not differ significantly among seasons, but abundance was higher in the run-of-river reservoir during summer. |
| Starting Page | 187 |
| Ending Page | 198 |
| Page Count | 12 |
| File Format | |
| ISSN | 00188158 |
| Journal | Hydrobiologia |
| Volume Number | 707 |
| Issue Number | 1 |
| e-ISSN | 15735117 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2012-12-27 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Calanoida Cyclopoida Zooplankton Paranapanema River Storage reservoir Run-of-river reservoir Freshwater & Marine Ecology Ecology Zoology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Aquatic Science |
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