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Spatial changes in zooplankton communities in a strong human-mediated river ecosystem

River damming causes a decrease in water current velocity which leads to an increase in richness and abundance of organisms atypical for running waters. Zooplankton is a representative example of such organisms. The influx of zooplankton from carp ponds is an additional factor that increases richnes...

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Autores principales: Czerniawski, Robert, Kowalska-Góralska, Monika
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6034592/
https://www.ncbi.nlm.nih.gov/pubmed/30002958
http://dx.doi.org/10.7717/peerj.5087
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author Czerniawski, Robert
Kowalska-Góralska, Monika
author_facet Czerniawski, Robert
Kowalska-Góralska, Monika
author_sort Czerniawski, Robert
collection PubMed
description River damming causes a decrease in water current velocity which leads to an increase in richness and abundance of organisms atypical for running waters. Zooplankton is a representative example of such organisms. The influx of zooplankton from carp ponds is an additional factor that increases richness and abundance of zooplankton in rivers. We hypothesized that zooplankton dispersing from the carp ponds colonize the impoundments in river and the richness of zooplankton increase in impoundments by development of new species, not observed in the upstream. The zooplankton was collected monthly from April to September of 2013 and 2014. Sampling sites were located in the Barycz river (in the lotic sections and in the dam impoundments), as well as in its tributaries, which are the outlets of carp ponds. The most changes in zooplankton richness and abundance were observed at sites located within the dam impoundments, especially in relation to the lower values of the current velocity. Since the abundance of pelagic rotifers, cladocerans and copepods in the carp pond outlets was similar to that at lower sites in the Barycz, the influence of the carp pond outlets on the abundance in the dam and lotic sections was significant. The river itself in its impounded sections provides advantageous conditions for retention and colonization by a high abundance of zooplankton dispersing from the carp ponds, and for the development of species not occurred in the upstream, which, in turn, increases richness.
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spelling pubmed-60345922018-07-12 Spatial changes in zooplankton communities in a strong human-mediated river ecosystem Czerniawski, Robert Kowalska-Góralska, Monika PeerJ Aquaculture, Fisheries and Fish Science River damming causes a decrease in water current velocity which leads to an increase in richness and abundance of organisms atypical for running waters. Zooplankton is a representative example of such organisms. The influx of zooplankton from carp ponds is an additional factor that increases richness and abundance of zooplankton in rivers. We hypothesized that zooplankton dispersing from the carp ponds colonize the impoundments in river and the richness of zooplankton increase in impoundments by development of new species, not observed in the upstream. The zooplankton was collected monthly from April to September of 2013 and 2014. Sampling sites were located in the Barycz river (in the lotic sections and in the dam impoundments), as well as in its tributaries, which are the outlets of carp ponds. The most changes in zooplankton richness and abundance were observed at sites located within the dam impoundments, especially in relation to the lower values of the current velocity. Since the abundance of pelagic rotifers, cladocerans and copepods in the carp pond outlets was similar to that at lower sites in the Barycz, the influence of the carp pond outlets on the abundance in the dam and lotic sections was significant. The river itself in its impounded sections provides advantageous conditions for retention and colonization by a high abundance of zooplankton dispersing from the carp ponds, and for the development of species not occurred in the upstream, which, in turn, increases richness. PeerJ Inc. 2018-07-03 /pmc/articles/PMC6034592/ /pubmed/30002958 http://dx.doi.org/10.7717/peerj.5087 Text en ©2018 Czerniawski and Kowalska-Góralska http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Aquaculture, Fisheries and Fish Science
Czerniawski, Robert
Kowalska-Góralska, Monika
Spatial changes in zooplankton communities in a strong human-mediated river ecosystem
title Spatial changes in zooplankton communities in a strong human-mediated river ecosystem
title_full Spatial changes in zooplankton communities in a strong human-mediated river ecosystem
title_fullStr Spatial changes in zooplankton communities in a strong human-mediated river ecosystem
title_full_unstemmed Spatial changes in zooplankton communities in a strong human-mediated river ecosystem
title_short Spatial changes in zooplankton communities in a strong human-mediated river ecosystem
title_sort spatial changes in zooplankton communities in a strong human-mediated river ecosystem
topic Aquaculture, Fisheries and Fish Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6034592/
https://www.ncbi.nlm.nih.gov/pubmed/30002958
http://dx.doi.org/10.7717/peerj.5087
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