Spatiotemporal Distribution and Assemblages of Fishes below the Lowermost Dam in Protected Reach in the Yangtze River Main Stream: Implications for River Management.
Identifieur interne : 000032 ( Main/Exploration ); précédent : 000031; suivant : 000033Spatiotemporal Distribution and Assemblages of Fishes below the Lowermost Dam in Protected Reach in the Yangtze River Main Stream: Implications for River Management.
Auteurs : Junyi Li [République populaire de Chine] ; Hui Zhang [République populaire de Chine] ; Danqing Lin [République populaire de Chine] ; Jinming Wu [République populaire de Chine] ; Chengyou Wang [République populaire de Chine] ; Xuan Xie [République populaire de Chine] ; Qiwei Wei [République populaire de Chine]Source :
- BioMed research international [ 2314-6141 ] ; 2016.
English descriptors
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Abstract
Now more and more ecologists concern about the impacts of dam construction on fish. However, studies of fishes downstream Gezhouba Dam were rarely reported except Chinese sturgeon (Acipenser sinensis Gray). In this study, catch investigations and five hydroacoustic detections were completed from 2015 to 2016 to understand the distribution, size, and categories of fishes and their relationship with the environmental factors below Gezhouba Dam in protected reach in the Yangtze River main stream. Results showed significant differences in fish distribution and TS (target strength) between wet and flood seasons. Mean TS in five hydroacoustic detections were -59.98 dB, -54.70 dB, -56.16 dB, -57.90 dB, and -59.17 dB, respectively, and dominant fish species are Coreius guichenoti (Bleeker), Siniperca chuatsi (Basilewsky), and Pelteobagrus vachelli (Richardson). In the longitudinal direction, fish preferred to stay in some specific sections like reaches 2, 4, 7, 8, 11, and 16. Since hydrology factors change greatly in different seasons, environmental characteristics vary along the reaches, and human activities play an important role in the fish behavior, it is concluded that great cross-season changes in hydrology lead to the differences in TS and fish assemblages and that geography characteristics, especially channel geography, together with human activities influence fish longitudinal distribution. This finding provides basic knowledge of spatiotemporal distribution and assemblages of fishes in the extended reaches downstream Gezhouba Dam. In addition, it offers implications for river management. It could also serve as reference of future research on fish habitat.
DOI: 10.1155/2016/4290793
PubMed: 27843943
Affiliations:
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Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>College of Life Science, Southwest University, Chongqing, China; Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Zhang, Hui" sort="Zhang, Hui" uniqKey="Zhang H" first="Hui" last="Zhang">Hui Zhang</name><affiliation wicri:level="1"><nlm:affiliation>Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Lin, Danqing" sort="Lin, Danqing" uniqKey="Lin D" first="Danqing" last="Lin">Danqing Lin</name><affiliation wicri:level="1"><nlm:affiliation>College of Life Science, Southwest University, Chongqing, China; Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>College of Life Science, Southwest University, Chongqing, China; Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Wu, Jinming" sort="Wu, Jinming" uniqKey="Wu J" first="Jinming" last="Wu">Jinming Wu</name><affiliation wicri:level="1"><nlm:affiliation>Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Wang, Chengyou" sort="Wang, Chengyou" uniqKey="Wang C" first="Chengyou" last="Wang">Chengyou Wang</name><affiliation wicri:level="1"><nlm:affiliation>Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Xie, Xuan" sort="Xie, Xuan" uniqKey="Xie X" first="Xuan" last="Xie">Xuan Xie</name><affiliation wicri:level="1"><nlm:affiliation>College of Life Science, Southwest University, Chongqing, China; Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>College of Life Science, Southwest University, Chongqing, China; Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author><author><name sortKey="Wei, Qiwei" sort="Wei, Qiwei" uniqKey="Wei Q" first="Qiwei" last="Wei">Qiwei Wei</name><affiliation wicri:level="1"><nlm:affiliation>Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan</wicri:regionArea><wicri:noRegion>Wuhan</wicri:noRegion></affiliation></author></analytic><series><title level="j">BioMed research international</title><idno type="eISSN">2314-6141</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>China</term><term>Ecosystem</term><term>Environmental Monitoring</term><term>Fisheries</term><term>Fishes</term><term>Humans</term><term>Rivers</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>China</term><term>Ecosystem</term><term>Environmental Monitoring</term><term>Fisheries</term><term>Fishes</term><term>Humans</term><term>Rivers</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Now more and more ecologists concern about the impacts of dam construction on fish. However, studies of fishes downstream Gezhouba Dam were rarely reported except Chinese sturgeon (Acipenser sinensis Gray). In this study, catch investigations and five hydroacoustic detections were completed from 2015 to 2016 to understand the distribution, size, and categories of fishes and their relationship with the environmental factors below Gezhouba Dam in protected reach in the Yangtze River main stream. Results showed significant differences in fish distribution and TS (target strength) between wet and flood seasons. Mean TS in five hydroacoustic detections were -59.98 dB, -54.70 dB, -56.16 dB, -57.90 dB, and -59.17 dB, respectively, and dominant fish species are Coreius guichenoti (Bleeker), Siniperca chuatsi (Basilewsky), and Pelteobagrus vachelli (Richardson). In the longitudinal direction, fish preferred to stay in some specific sections like reaches 2, 4, 7, 8, 11, and 16. Since hydrology factors change greatly in different seasons, environmental characteristics vary along the reaches, and human activities play an important role in the fish behavior, it is concluded that great cross-season changes in hydrology lead to the differences in TS and fish assemblages and that geography characteristics, especially channel geography, together with human activities influence fish longitudinal distribution. This finding provides basic knowledge of spatiotemporal distribution and assemblages of fishes in the extended reaches downstream Gezhouba Dam. In addition, it offers implications for river management. It could also serve as reference of future research on fish habitat.</div></front></TEI><affiliations><list><country><li>République populaire de Chine</li></country></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Li, Junyi" sort="Li, Junyi" uniqKey="Li J" first="Junyi" last="Li">Junyi Li</name></noRegion><name sortKey="Lin, Danqing" sort="Lin, Danqing" uniqKey="Lin D" first="Danqing" last="Lin">Danqing Lin</name><name sortKey="Wang, Chengyou" sort="Wang, Chengyou" uniqKey="Wang C" first="Chengyou" last="Wang">Chengyou Wang</name><name sortKey="Wei, Qiwei" sort="Wei, Qiwei" uniqKey="Wei Q" first="Qiwei" last="Wei">Qiwei Wei</name><name sortKey="Wu, Jinming" sort="Wu, Jinming" uniqKey="Wu J" first="Jinming" last="Wu">Jinming Wu</name><name sortKey="Xie, Xuan" sort="Xie, Xuan" uniqKey="Xie X" first="Xuan" last="Xie">Xuan Xie</name><name sortKey="Zhang, Hui" sort="Zhang, Hui" uniqKey="Zhang H" first="Hui" last="Zhang">Hui Zhang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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