How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)?
Abstract Most rivers around the Mediterranean region, regardless of size, are interrupted by human induced barriers. Although various studies have been conducted to investigate the impacts of reservoirs on undisrupted freshwater biota, what kind of effects they exert on the distribution of freshwate...
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crwiley:10.1002/rra.4013 2024-06-02T07:55:13+00:00 How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)? Yalçın Özdilek, Şükran Partal, Nurbanu Mestav, Burcu Türkiye Bilimsel ve Teknolojik Araştirma Kurumu 2022 http://dx.doi.org/10.1002/rra.4013 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.4013 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/rra.4013 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor River Research and Applications volume 38, issue 7, page 1333-1346 ISSN 1535-1459 1535-1467 journal-article 2022 crwiley https://doi.org/10.1002/rra.4013 2024-05-03T10:45:07Z Abstract Most rivers around the Mediterranean region, regardless of size, are interrupted by human induced barriers. Although various studies have been conducted to investigate the impacts of reservoirs on undisrupted freshwater biota, what kind of effects they exert on the distribution of freshwater fish assemblages with respect to the presence of invasive species remains to be answered. To attend to this research need, the Karamenderes River, which is disrupted by the Bayramiç Reservoir, was selected as the research site. Relying on the river continuum concept (RCC), we hypothesized that fish assemblages in a given river would demonstrate a gradual downstream change unless the river is interrupted by any reservoir. The ad hoc unweighted pair group method with arithmetic means (UPGMA) agglomerative hierarchical cluster analyses revealed 11 fish assemblages 100 km down the studied river, which is characterized by four environmental gradients. Besides, co‐occurrence network analyses were performed to gain a better understanding of the constructs of the observed fish assemblages. The analyses yielded two distinct clusters along the river and showed that the Bayramiç Reservoir had no decisive part in the spatial clustering of these fish assemblages. The migratory species Anguilla anguilla was found only in and around the river mouth area. The co‐occurrence network analyses indicated that the freshwater, estuarine and introduced species were observable in distinct groups. It is notable that the non‐native Cyprinus carpio and invasive Carassius gibelio were determined in the native freshwater fish species module. The research evidenced that the reservoir had a triple effect, that is, a migration barrier to migratory fish species, a donor facilitating invasion, and a cause of homogenization of river fish assemblages along the river. The results suggest that the impact of the reservoir should be assessed in view of multiple nested model and fish passageways and controlling invasive species are two contradictory ... Article in Journal/Newspaper Anguilla anguilla Wiley Online Library River Research and Applications 38 7 1333 1346 |
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English |
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Abstract Most rivers around the Mediterranean region, regardless of size, are interrupted by human induced barriers. Although various studies have been conducted to investigate the impacts of reservoirs on undisrupted freshwater biota, what kind of effects they exert on the distribution of freshwater fish assemblages with respect to the presence of invasive species remains to be answered. To attend to this research need, the Karamenderes River, which is disrupted by the Bayramiç Reservoir, was selected as the research site. Relying on the river continuum concept (RCC), we hypothesized that fish assemblages in a given river would demonstrate a gradual downstream change unless the river is interrupted by any reservoir. The ad hoc unweighted pair group method with arithmetic means (UPGMA) agglomerative hierarchical cluster analyses revealed 11 fish assemblages 100 km down the studied river, which is characterized by four environmental gradients. Besides, co‐occurrence network analyses were performed to gain a better understanding of the constructs of the observed fish assemblages. The analyses yielded two distinct clusters along the river and showed that the Bayramiç Reservoir had no decisive part in the spatial clustering of these fish assemblages. The migratory species Anguilla anguilla was found only in and around the river mouth area. The co‐occurrence network analyses indicated that the freshwater, estuarine and introduced species were observable in distinct groups. It is notable that the non‐native Cyprinus carpio and invasive Carassius gibelio were determined in the native freshwater fish species module. The research evidenced that the reservoir had a triple effect, that is, a migration barrier to migratory fish species, a donor facilitating invasion, and a cause of homogenization of river fish assemblages along the river. The results suggest that the impact of the reservoir should be assessed in view of multiple nested model and fish passageways and controlling invasive species are two contradictory ... |
author2 |
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu |
format |
Article in Journal/Newspaper |
author |
Yalçın Özdilek, Şükran Partal, Nurbanu Mestav, Burcu |
spellingShingle |
Yalçın Özdilek, Şükran Partal, Nurbanu Mestav, Burcu How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)? |
author_facet |
Yalçın Özdilek, Şükran Partal, Nurbanu Mestav, Burcu |
author_sort |
Yalçın Özdilek, Şükran |
title |
How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)? |
title_short |
How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)? |
title_full |
How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)? |
title_fullStr |
How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)? |
title_full_unstemmed |
How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)? |
title_sort |
how does a reservoir affect the fish assemblage structure in a mediterranean river (turkey)? |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/rra.4013 https://onlinelibrary.wiley.com/doi/pdf/10.1002/rra.4013 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/rra.4013 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
River Research and Applications volume 38, issue 7, page 1333-1346 ISSN 1535-1459 1535-1467 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/rra.4013 |
container_title |
River Research and Applications |
container_volume |
38 |
container_issue |
7 |
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1333 |
op_container_end_page |
1346 |
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1800747082222403584 |