Wang Luyao, Hua Qi, Zhang Yuhai, Yin Hong, Hu Maolin, Wang Sheng
{"title":"鄱阳湖-长江水道鱼类群落多样性及其与水位波动的关系","authors":"Wang Luyao, Hua Qi, Zhang Yuhai, Yin Hong, Hu Maolin, Wang Sheng","doi":"10.1002/eco.70096","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Poyang Lake, with an obviously fluctuating water level, is connected to the Yangtze River by only one important waterway. To understand how water level fluctuation drives fish community diversity in this waterway, 12 indices across three dimensions (species diversity, taxonomic diversity and functional diversity) were calculated. Meanwhile, redundancy analysis (RDA) and generalized additive models (GAM) were used to evaluate the response of fish community diversity to water level fluctuations. We collected 63 fish species belonging to 7 orders, 13 families and 39 genera, with Cypriniformes being the dominant order. According to RDA, habitat changes driven by water level fluctuations were the primary factors underlying the shifts in fish community diversity. The GAM model further revealed that water level changes directly impacted the diversity of the fish community, leading to a decrease in the taxonomic distinctness index but an increase in species diversity, taxonomic diversity and functional diversity. Particularly, the number of species, the variation in the taxonomic distinctness index and the functional richness index exhibited highly significant correlations with water levels (<i>p</i> < 0.001). Therefore, high water levels were the primary and crucial factor in maintaining the fish community diversity in the waterway connecting Poyang Lake and the Yangtze River. These results could provide a scientific basis for the conservation and management of the fishery resources in the water body and provide important guidance to strengthen the protection and management of the lake ecosystem.</p>\n </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 5","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Fish Community Diversity and Its Relationships With Water-Level Fluctuations in the Waterway Connecting Poyang Lake and the Yangtze River\",\"authors\":\"Wang Luyao, Hua Qi, Zhang Yuhai, Yin Hong, Hu Maolin, Wang Sheng\",\"doi\":\"10.1002/eco.70096\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>Poyang Lake, with an obviously fluctuating water level, is connected to the Yangtze River by only one important waterway. To understand how water level fluctuation drives fish community diversity in this waterway, 12 indices across three dimensions (species diversity, taxonomic diversity and functional diversity) were calculated. Meanwhile, redundancy analysis (RDA) and generalized additive models (GAM) were used to evaluate the response of fish community diversity to water level fluctuations. We collected 63 fish species belonging to 7 orders, 13 families and 39 genera, with Cypriniformes being the dominant order. According to RDA, habitat changes driven by water level fluctuations were the primary factors underlying the shifts in fish community diversity. The GAM model further revealed that water level changes directly impacted the diversity of the fish community, leading to a decrease in the taxonomic distinctness index but an increase in species diversity, taxonomic diversity and functional diversity. Particularly, the number of species, the variation in the taxonomic distinctness index and the functional richness index exhibited highly significant correlations with water levels (<i>p</i> < 0.001). Therefore, high water levels were the primary and crucial factor in maintaining the fish community diversity in the waterway connecting Poyang Lake and the Yangtze River. These results could provide a scientific basis for the conservation and management of the fishery resources in the water body and provide important guidance to strengthen the protection and management of the lake ecosystem.</p>\\n </div>\",\"PeriodicalId\":55169,\"journal\":{\"name\":\"Ecohydrology\",\"volume\":\"18 5\",\"pages\":\"\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2025-08-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ecohydrology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/eco.70096\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecohydrology","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/eco.70096","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
Fish Community Diversity and Its Relationships With Water-Level Fluctuations in the Waterway Connecting Poyang Lake and the Yangtze River
Poyang Lake, with an obviously fluctuating water level, is connected to the Yangtze River by only one important waterway. To understand how water level fluctuation drives fish community diversity in this waterway, 12 indices across three dimensions (species diversity, taxonomic diversity and functional diversity) were calculated. Meanwhile, redundancy analysis (RDA) and generalized additive models (GAM) were used to evaluate the response of fish community diversity to water level fluctuations. We collected 63 fish species belonging to 7 orders, 13 families and 39 genera, with Cypriniformes being the dominant order. According to RDA, habitat changes driven by water level fluctuations were the primary factors underlying the shifts in fish community diversity. The GAM model further revealed that water level changes directly impacted the diversity of the fish community, leading to a decrease in the taxonomic distinctness index but an increase in species diversity, taxonomic diversity and functional diversity. Particularly, the number of species, the variation in the taxonomic distinctness index and the functional richness index exhibited highly significant correlations with water levels (p < 0.001). Therefore, high water levels were the primary and crucial factor in maintaining the fish community diversity in the waterway connecting Poyang Lake and the Yangtze River. These results could provide a scientific basis for the conservation and management of the fishery resources in the water body and provide important guidance to strengthen the protection and management of the lake ecosystem.
期刊介绍:
Ecohydrology is an international journal publishing original scientific and review papers that aim to improve understanding of processes at the interface between ecology and hydrology and associated applications related to environmental management.
Ecohydrology seeks to increase interdisciplinary insights by placing particular emphasis on interactions and associated feedbacks in both space and time between ecological systems and the hydrological cycle. Research contributions are solicited from disciplines focusing on the physical, ecological, biological, biogeochemical, geomorphological, drainage basin, mathematical and methodological aspects of ecohydrology. Research in both terrestrial and aquatic systems is of interest provided it explicitly links ecological systems and the hydrologic cycle; research such as aquatic ecological, channel engineering, or ecological or hydrological modelling is less appropriate for the journal unless it specifically addresses the criteria above. Manuscripts describing individual case studies are of interest in cases where broader insights are discussed beyond site- and species-specific results.