{"title":"Agricultural land use affects the beta diversity of fish assemblages in subtropical headwater streams in China","authors":"Jialing Qiao, Ziyu Yang, Ling Chu, Yunzhi Yan","doi":"10.1007/s10641-023-01494-y","DOIUrl":null,"url":null,"abstract":"<p>Headwater streams, located upstream of the river network, play a crucial role in river ecosystems. However, the increasing conversion of natural habitats into agricultural land leads to extensive alterations in landscape composition, posing serious threats to natural stream ecosystems and biodiversity. This research focuses on the headwater streams of the Xin’an River in the Wannan Mountains, China. The study merged information on habitat conditions from two types of habitats (disturbed and natural segments) to evaluate the impact of agricultural land use on the beta diversity of fish assemblages. The results indicated that the disturbed segments exhibited intermediate land-use intensities, slightly higher habitat heterogeneities, and a higher number of native invasive species compared to the natural segments. Differences in local-scale habitat conditions and regional-scale land use drove the species composition discrepancy (taxonomic beta diversity) between disturbed and natural segments. This study provides evidence of how agricultural land use impacts fish assemblage diversity in headwater streams and underscores the significance of sustainable management and conservation for preserving endemic assemblages in these streams.</p>","PeriodicalId":11799,"journal":{"name":"Environmental Biology of Fishes","volume":"9 1","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Biology of Fishes","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s10641-023-01494-y","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Headwater streams, located upstream of the river network, play a crucial role in river ecosystems. However, the increasing conversion of natural habitats into agricultural land leads to extensive alterations in landscape composition, posing serious threats to natural stream ecosystems and biodiversity. This research focuses on the headwater streams of the Xin’an River in the Wannan Mountains, China. The study merged information on habitat conditions from two types of habitats (disturbed and natural segments) to evaluate the impact of agricultural land use on the beta diversity of fish assemblages. The results indicated that the disturbed segments exhibited intermediate land-use intensities, slightly higher habitat heterogeneities, and a higher number of native invasive species compared to the natural segments. Differences in local-scale habitat conditions and regional-scale land use drove the species composition discrepancy (taxonomic beta diversity) between disturbed and natural segments. This study provides evidence of how agricultural land use impacts fish assemblage diversity in headwater streams and underscores the significance of sustainable management and conservation for preserving endemic assemblages in these streams.
期刊介绍:
Environmental Biology of Fishes is an international journal that publishes original studies on the ecology, life history, epigenetics, behavior, physiology, morphology, systematics and evolution of marine and freshwater fishes. Empirical and theoretical papers are published that deal with the relationship between fishes and their external and internal environment, whether natural or unnatural. The journal concentrates on papers that advance the scholarly understanding of life and draw on a variety of disciplines in reaching this understanding.
Environmental Biology of Fishes publishes original papers, review papers, brief communications, editorials, book reviews and special issues. Descriptions and submission requirements of these article types can be found in the Instructions for Authors.