Gang Li, Baozhu Pan, Yue Chen, Xu Han, Xing Liu, Yitong Ding, Zijie Yang
{"title":"高泥沙负荷削弱了氮营养物对大陆尺度河流浮游动物多样性的影响","authors":"Gang Li, Baozhu Pan, Yue Chen, Xu Han, Xing Liu, Yitong Ding, Zijie Yang","doi":"10.1016/j.jenvman.2025.124876","DOIUrl":null,"url":null,"abstract":"<div><div>Suspended sediment is a major factor driving biodiversity in sediment-laden rivers. However, the composition of aquatic communities and their diversity responses to sediment–nutrient interactions in large-scale sediment-laden rivers are largely unexplored. This study investigated the distribution patterns of zooplankton communities in the main stream of the Yellow River, China. Samples were collected in 41 sampling sections spanning from the river source to the estuary. Based on the sediment concentration of water samples, the study area was divided into a low-sediment region (region 1) and a sediment-laden region (region 2). A total of 164 species were identified in zooplankton samples, with significantly higher species number and density in region 2 compared to region 1. Non-metric multidimensional scaling and analysis of similarities revealed pronounced differences in zooplankton community composition across regions. Despite the prominent contribution of spatial factors to community variations, environmental filtering played a non-negligible role. Nitrogen nutrients emerged as overarching environmental factors shaping zooplankton communities in region 1. In addition to nitrogen nutrients, total suspended solids and turbidity also strongly affected zooplankton communities in region 2. High sediment load weakened the positive effects of nitrogen nutrients on zooplankton diversity. Notably, the sediment effect did not result in species loss, but led to an earlier nitrogen limitation on community diversity. This study provides mechanistic insight into zooplankton community dynamics in a continental-scale sediment-laden river system, unveiling the response patterns of aquatic communities to suspended sediment.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"379 ","pages":"Article 124876"},"PeriodicalIF":8.4000,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High sediment load weakens the effects of nitrogen nutrients on zooplankton diversity in a continental-scale river\",\"authors\":\"Gang Li, Baozhu Pan, Yue Chen, Xu Han, Xing Liu, Yitong Ding, Zijie Yang\",\"doi\":\"10.1016/j.jenvman.2025.124876\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Suspended sediment is a major factor driving biodiversity in sediment-laden rivers. However, the composition of aquatic communities and their diversity responses to sediment–nutrient interactions in large-scale sediment-laden rivers are largely unexplored. This study investigated the distribution patterns of zooplankton communities in the main stream of the Yellow River, China. Samples were collected in 41 sampling sections spanning from the river source to the estuary. Based on the sediment concentration of water samples, the study area was divided into a low-sediment region (region 1) and a sediment-laden region (region 2). A total of 164 species were identified in zooplankton samples, with significantly higher species number and density in region 2 compared to region 1. Non-metric multidimensional scaling and analysis of similarities revealed pronounced differences in zooplankton community composition across regions. Despite the prominent contribution of spatial factors to community variations, environmental filtering played a non-negligible role. Nitrogen nutrients emerged as overarching environmental factors shaping zooplankton communities in region 1. In addition to nitrogen nutrients, total suspended solids and turbidity also strongly affected zooplankton communities in region 2. High sediment load weakened the positive effects of nitrogen nutrients on zooplankton diversity. Notably, the sediment effect did not result in species loss, but led to an earlier nitrogen limitation on community diversity. This study provides mechanistic insight into zooplankton community dynamics in a continental-scale sediment-laden river system, unveiling the response patterns of aquatic communities to suspended sediment.</div></div>\",\"PeriodicalId\":356,\"journal\":{\"name\":\"Journal of Environmental Management\",\"volume\":\"379 \",\"pages\":\"Article 124876\"},\"PeriodicalIF\":8.4000,\"publicationDate\":\"2025-03-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Environmental Management\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0301479725008527\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Environmental Management","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0301479725008527","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
High sediment load weakens the effects of nitrogen nutrients on zooplankton diversity in a continental-scale river
Suspended sediment is a major factor driving biodiversity in sediment-laden rivers. However, the composition of aquatic communities and their diversity responses to sediment–nutrient interactions in large-scale sediment-laden rivers are largely unexplored. This study investigated the distribution patterns of zooplankton communities in the main stream of the Yellow River, China. Samples were collected in 41 sampling sections spanning from the river source to the estuary. Based on the sediment concentration of water samples, the study area was divided into a low-sediment region (region 1) and a sediment-laden region (region 2). A total of 164 species were identified in zooplankton samples, with significantly higher species number and density in region 2 compared to region 1. Non-metric multidimensional scaling and analysis of similarities revealed pronounced differences in zooplankton community composition across regions. Despite the prominent contribution of spatial factors to community variations, environmental filtering played a non-negligible role. Nitrogen nutrients emerged as overarching environmental factors shaping zooplankton communities in region 1. In addition to nitrogen nutrients, total suspended solids and turbidity also strongly affected zooplankton communities in region 2. High sediment load weakened the positive effects of nitrogen nutrients on zooplankton diversity. Notably, the sediment effect did not result in species loss, but led to an earlier nitrogen limitation on community diversity. This study provides mechanistic insight into zooplankton community dynamics in a continental-scale sediment-laden river system, unveiling the response patterns of aquatic communities to suspended sediment.
期刊介绍:
The Journal of Environmental Management is a journal for the publication of peer reviewed, original research for all aspects of management and the managed use of the environment, both natural and man-made.Critical review articles are also welcome; submission of these is strongly encouraged.