<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Dispersal of crustacean zooplankton from a reservoir in a lowland river was observed over a relatively long distance. Zooplankton samples were collected by a unique technique from “the same water”. Large Cladocera (<italic>Daphnia cucullata and Diaphanosoma brachyurum</italic>) showed the greatest reduction in a river, but they were common over a distance of up to 130 km below a dam. These two planktonic species revealed a low potential for colonizing oxbow lakes. Eurytopic <italic>Chydorus sphaericus</italic> and <italic>Mesocyclops leuckarti</italic> transferred from the Siemianówka Reservoir had a great dispersal capacity in the Narew River and could effectively support local populations in oxbow lakes over a distance of 180 km.</p>
<p>Similarity between the crustacean communities in the river and the reservoir significantly decreased with the increasing distance from the dam. At the same time, crustacean communities in oxbow lakes were not affected by the distance from the source. Dispersal from the large source of zooplankton to local communities is a very important process but the local environmental factors such as habitat heterogeneity, aquatic vegetation and the hydrological connectivity can be strong enough to affect the structure of local crustacean communities in oxbow lakes.</p>
</abstract>

Dispersal of crustacean zooplankton from a reservoir in a lowland river was observed over a relatively long distance. Zooplankton samples were collected by a unique technique from “the same water”. Large Cladocera (Daphnia cucullata and Diaphanosoma brachyurum) showed the greatest reduction in a river, but they were common over a distance of up to 130 km below a dam. These two planktonic species revealed a low potential for colonizing oxbow lakes. Eurytopic Chydorus sphaericus and Mesocyclops leuckarti transferred from the Siemianówka Reservoir had a great dispersal capacity in the Narew River and could effectively support local populations in oxbow lakes over a distance of 180 km.
Similarity between the crustacean communities in the river and the reservoir significantly decreased with the increasing distance from the dam. At the same time, crustacean communities in oxbow lakes were not affected by the distance from the source. Dispersal from the large source of zooplankton to local communities is a very important process but the local environmental factors such as habitat heterogeneity, aquatic vegetation and the hydrological connectivity can be strong enough to affect the structure of local crustacean communities in oxbow lakes.

Microcrustacean (Cladocera, Copepoda) source-sink dynamics in a lowland river ecosystem with a dam reservoir

Department of Hydrobiology, Institute of Biology

Oceanological and Hydrobiological Studies

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Dispersal of crustacean zooplankton from a reservoir in a lowland river was observed over a relatively long distance. Zooplankton samples were collected by a...

Microcrustacean (Cladocera, Copepoda) source-sink dynamics in a lowland river ecosystem with a dam reservoir

Article Category: Original research paper

Published Online: Sep 22, 2016

Page range: 297 - 303

Received: Sep 04, 2015

Accepted: Nov 17, 2015

DOI: https://doi.org/10.1515/ohs-2016-0026

Keywords
zooplankton, metacommunity, dispersal, colonization, oxbow lakes

© 2016 Faculty of Oceanography and Geography, University of Gdańsk , Poland. All rights reserved

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Microcrustacean (Cladocera, Copepoda) source-sink dynamics in a lowland river ecosystem with a dam reservoir

Article Category: Original research paper

Published Online: Sep 22, 2016

Page range: 297 - 303

Received: Sep 04, 2015

Accepted: Nov 17, 2015

DOI: https://doi.org/10.1515/ohs-2016-0026

Keywordszooplankton, metacommunity, dispersal, colonization, oxbow lakes

© 2016 Faculty of Oceanography and Geography, University of Gdańsk , Poland. All rights reserved

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
zooplankton, metacommunity, dispersal, colonization, oxbow lakes