Effects of warming on the structure of aquatic communities in tropical bromeliad microecosystems.

Autor: Progênio M; Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais Universidade Estadual de Maringá (UEM) Maringá Paraná Brazil., Antiqueira PAP; Programa de Pós-Graduação em Ecologia, Instituto de Biologia (IB) Universidade Estadual de Campinas (UNICAMP) Campinas São Paulo Brazil., Oliveira FR; Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais Universidade Estadual de Maringá (UEM) Maringá Paraná Brazil., Meira BR; Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais Universidade Estadual de Maringá (UEM) Maringá Paraná Brazil.; Departamento de Biodiversidade, Evolução e Ambiente Universidade Federal de Ouro Preto (UFOP) Ouro Preto Minas Gerais Brazil., Lansac-Tôha FM; Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais Universidade Estadual de Maringá (UEM) Maringá Paraná Brazil., Rodrigues LC; Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais Universidade Estadual de Maringá (UEM) Maringá Paraná Brazil.; Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura Universidade Estadual de Maringá (UEM) Maringá Paraná Brazil., Romero GQ; Departamento de Biologia Animal, Instituto de Biologia (IB) Universidade Estadual de Campinas (UNICAMP) Campinas São Paulo Brazil., Nash LN; School of Biological and Behavioural Sciences Queen Mary University of London London UK., Kratina P; School of Biological and Behavioural Sciences Queen Mary University of London London UK., Velho LFM; Programa de Pós-graduação em Ecologia de Ambientes Aquáticos Continentais Universidade Estadual de Maringá (UEM) Maringá Paraná Brazil.; Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura Universidade Estadual de Maringá (UEM) Maringá Paraná Brazil.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2023 Feb 22; Vol. 13 (2), pp. e9824. Date of Electronic Publication: 2023 Feb 22 (Print Publication: 2023).
DOI: 10.1002/ece3.9824
Abstrakt: Freshwaters are among the most vulnerable ecosystems to climate warming, with projected temperature increases over the coming decades leading to significant losses of aquatic biodiversity. Experimental studies that directly warm entire natural ecosystems in the tropics are needed, for understanding the disturbances on aquatic communities. Therefore, we conducted an experiment to test the impacts of predicted future warming on density, alpha diversity, and beta diversity of freshwater aquatic communities, inhabiting natural microecosystems-Neotropical tank bromeliads. Aquatic communities within the tanks bromeliads were experimentally exposed to warming, with temperatures ranging from 23.58 to 31.72°C. Linear regression analysis was used to test the impacts of warming. Next, distance-based redundancy analysis was performed to assess how warming might alter total beta diversity and its components. This experiment was conducted across a gradient of habitat size (bromeliad water volume) and availability of detrital basal resources. A combination of the highest detritus biomass and higher experimental temperatures resulted in the greatest density of flagellates. However, the density of flagellates declined in bromeliads with higher water volume and lower detritus biomass. Moreover, the combination of the highest water volume and high temperature reduced density of copepods. Finally, warming changed microfauna species composition, mostly through species substitution ( β repl component of total beta-diversity). These findings indicate that warming strongly structures freshwater communities by reducing or increasing densities of different aquatic communities groups. It also enhances beta-diversity, and many of these effects are modulated by habitat size or detrital resources.
Competing Interests: The authors declare that they have no conflict of interest.
(© 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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