Human land-uses homogenize stream assemblages and reduce animal biomass production.

Autor: Moi DA; Graduate Program in Ecology of Inland Water Ecosystems (PEA), Department of Biology (DBI), Center of Biological Sciences (CCB), State University of Maringá (UEM), Maringa, Brazil., Barrios M; Departamento de Ecología y Gestión Ambiental CURE, Universidad de la República, Maldonado, Uruguay., Tesitore G; Departamento de Ecología y Gestión Ambiental CURE, Universidad de la República, Maldonado, Uruguay., Burwood M; Departamento de Ecología y Gestión Ambiental CURE, Universidad de la República, Maldonado, Uruguay., Romero GQ; Laboratory of Multitrophic Interactions and Biodiversity, Department of Animal Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil., Mormul RP; Graduate Program in Ecology of Inland Water Ecosystems (PEA), Department of Biology (DBI), Center of Biological Sciences (CCB), State University of Maringá (UEM), Maringa, Brazil., Kratina P; School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK., Juen L; Programa de Pós-graduação em Ecologia-Universidade Federal do Pará/Embrapa, Instituto de Ciências Biológicas, Belém, PA, Brazil.; Laboratory of Ecology and Conservation (LABECO), Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil., Michelan TS; Programa de Pós-graduação em Ecologia-Universidade Federal do Pará/Embrapa, Instituto de Ciências Biológicas, Belém, PA, Brazil.; Laboratory of Ecology and Conservation (LABECO), Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil., Montag LFA; Programa de Pós-graduação em Ecologia-Universidade Federal do Pará/Embrapa, Instituto de Ciências Biológicas, Belém, PA, Brazil.; Laboratory of Ecology and Conservation (LABECO), Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil., Cruz GM; Laboratory of Ecology and Conservation (LABECO), Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil., García-Girón J; Geography Research Unit, University of Oulu, Oulu, Finland.; Department of Biodiversity and Environmental Management, University of León, León, Spain., Heino J; Geography Research Unit, University of Oulu, Oulu, Finland., Hughes RM; Amnis Opes Institute, Corvallis, Oregon, USA.; Department of Fisheries, Wildlife, & Conservation Sciences, Oregon State University, Corvallis, Oregon, USA., Figueiredo BRS; Department of Ecology and Zoology, Federal University of Santa Catarina, Florianopolis, SC, Brazil., Teixeira de Mello F; Departamento de Ecología y Gestión Ambiental CURE, Universidad de la República, Maldonado, Uruguay.
Jazyk: angličtina
Zdroj: The Journal of animal ecology [J Anim Ecol] 2023 Jun; Vol. 92 (6), pp. 1176-1189. Date of Electronic Publication: 2023 Apr 11.
DOI: 10.1111/1365-2656.13924
Abstrakt: Human land-use change is a major threat to natural ecosystems worldwide. Nonetheless, the effects of human land-uses on the structure of plant and animal assemblages and their functional characteristics need to be better understood. Furthermore, the pathways by which human land uses affect ecosystem functions, such as biomass production, still need to be clarified. We compiled a unique dataset of fish, arthropod and macrophyte assemblages from 61 stream ecosystems in two Neotropical biomes: Amazonian rainforest and Uruguayan grasslands. We then tested how the cover of agriculture, pasture, urbanization and afforestation affected the taxonomic richness and functional diversity of those three species assemblages, and the consequences of these effects for animal biomass production. Single trait categories and functional diversity were evaluated, combining recruitment and life-history, resource and habitat-use, and body size. The effects of intensive human land-uses on taxonomic and functional diversities were as strong as other drivers known to affect biodiversity, such as local climate and environmental factors. In both biomes, the taxonomic richness and functional diversity of animal and macrophyte assemblages decreased with increasing cover of agriculture, pasture, and urbanization. Human land-uses were associated with functional homogenization of both animal and macrophyte assemblages. Human land-uses reduced animal biomass through direct and indirect pathways mediated by declines in taxonomic and functional diversities. Our findings indicate that converting natural ecosystems to supply human demands results in species loss and trait homogenization across multiple biotic assemblages, ultimately reducing animal biomass production in streams.
(© 2023 The Authors. Journal of Animal Ecology © 2023 British Ecological Society.)
Databáze: MEDLINE
Externí odkaz: