水生生物学报2026，Vol.50Issue(5)：121-133,13.DOI:10.3724/1000-3207.2025.2025.0372
高原湖泊营养来源对大型底栖动物β多样性的影响——以扎陵湖、鄂陵湖流域为例
THE IMPACT OF NUTRIENT SOURCES ON THE BETA DIVERSITY PATTERNS OF MACROZOOBENTHOS IN PLATEAU LAKES:A CASE STUDY OF THE ZHALING LAKE AND ELING LAKE BASINS
摘要
Abstract
To explore the influence of nutrient sources on the beta diversity patterns of macrozoobenthic communities in plateau lakes,a quantitative survey of macrozoobenthos and their nutrient sources was conducted in the Zhaling Lake and Eling Lake basins from 2022 to 2024 in the dry and wet seasons.A total of 108 taxa belonging to 8 orders,39 fami-lies were collected.Overall,the lake,habitat,season,and their interactions showed no significant effects on zooben-thos species richness(P>0.05).However,total beta-diversity was relatively high and primarily driven by turnover component.We used parameters in water(chlorophyll a,phytoplankton,total nitrogen,total phosphorus)and catch-ment characteristics(vegetation coverage,altitude differences,precipitation)to quantify allochthonous inputs and autochthonous nutrients.The Chl.a was significantly higher in the wet season than that in the dry season(P<0.001),and the allochthonous input in the littoral zone of Eling Lake was significantly higher than that in the river region(P<0.01).The Random Forest model indicated that allochthonous nutrient had a stronger correlation with the beta-diversity of the macrozoobenthic community.Allochthonous inputs outweighed autochthonous nutrients in both river and littoral zones during the wet season.In contrast,during the dry season in littoral zone,the importance of autochthonous nutrients such as chlorophyll a and total phosphorus increased significantly,revealing a co-dominant pattern driven by internal and external sources.The total beta diversity and its turnover component exhibited greater sensitivity to allochthonous input,while nestedness in river zone during the wet season also showed certain responsiveness to autochthonous nut-rient.These findings provide fundamental scientific support for the ecological management of plateau lake ecosystems.关键词
黄河源/β多样性/内源营养/外源输入/大型底栖动物Key words
Source region of the Yellow River/Beta diversity/Autochthonous nutrient/Allochthonous input/Macro-zoobenthos分类
资源环境引用本文复制引用
何滢池,和雅静,吴俊燕,赵永晶,徐东坡,匡箴,王洪铸,崔永德..高原湖泊营养来源对大型底栖动物β多样性的影响——以扎陵湖、鄂陵湖流域为例[J].水生生物学报,2026,50(5):121-133,13.基金项目
农业农村部财政专项"黄河渔业资源与环境调查"资助Supported by the Project of Yellow River Fisheries Resources and Envi-ronment Investigation from the MARA,P.R.China （）
