Influence of local and landscape environmental factors on alpha and beta diversity of macroinvertebrates in Andean rivers

作     者：DIAZ-ROJAS Camila A PEDROZA-RAMOS Adriana X BARRERA-HERRERA July A ROA-FUENTES Camilo A DIAZ-ROJAS Camila A;PEDROZA-RAMOS Adriana X;BARRERA-HERRERA July A;ROA-FUENTES Camilo A

作者机构：Ecology Unit in Aquatic Systems Research GroupPedagogical and Technological University of ColombiaUPTCAvenida Central del Norte 39-115TunjaBoyacáColombia 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2023年第20卷第9期

页      面：2487-2501页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 0713[理学-生态学] 

基　　金：part the research project"Importancia de las variables locales y de paisaje sobre las comunidades de peces y macroinvertebrados bentónicos de sistemas lóticos andinos"(SGI 2955)financed by the Ministry of Science,Technology and Innovation of Colombia(MINCIENCIAS)with resources from the Fondo Nacional de Patrimonio Autónomo para el Financiamiento de la Ciencia endorsed by the Universidad Pedagógica y Tecnológica de Colombia ethics committee(Acta No 06 del 12 de agosto de 2019) 

主　　题：Andean lotic systems Andean agroecosystems Instream habitat Landcover Turnover Nestedness 

摘      要：Research on macroinvertebrate community structure in Andean rivers has been oriented towards describing patterns of alpha and gamma diversity by taking into account environmental predictors at local spatial scales(e.g.,micro-and mesohabitats).However,the patterns of beta diversity and the importance of landscape-scale variables have been evaluated to a lesser *** objective of this study was to describe the patterns of alpha and beta diversity of benthic macroinvertebrates in the Andean rivers of the Orinoco basin and their relationship with local and landscape environmental variation.A stratified random sampling of macroinvertebrates was carried out at 40 sites(comprising an altitudinal range of between 500 and 2900 m.a.s.l.),local and landscape variables were *** results showed that the variation of alpha diversity was influenced by local and landscape variables,which are directly and indirectly related to the contribution of sediments,substrate composition and flow velocity,providing a heterogeneity of *** beta diversity was explained by the combined effect of local and landscape *** the beta diversity phenomena,turnover was predominant while nestedness presented a minor contribution and both were explained in greater proportion by local descriptors and some landscape variables,specifically those of a geomorphological *** results concur with the view of an environmental and spatial hierarchy within the river habitat and highlight the influence of multiple scales on macroinvertebrate *** above suggests that both local and landscape scales must necessarily be considered for environmental management and the conservation of Andean lotic ecosystems.