egime shifts in a shallow lake over 12 years: Consequences for taxonomic and functional diversities, and ecosystem multifunctionalit

Autor(es):Mostrar menos -

Moi, Dieison A. ^[1] ; Romero, Gustavo Q. ^[2] ; Jeppesen, Erik ^{[3, 4, 5, 6]} ; Kratina, Pavel ^[7] ; Alves, Diego C. ^{[1, 8]} ; Antiqueira, Pablo A. P. ^[2] ; de Mello, Franco Teixeira ^[9] ; Figueiredo, Bruno R. S. ^[10] ; Bonecker, Claudia C. ^[1] ; Pires, Aliny P. F. ^[11] ; Braghin, Louizi S. M. ^[1] ; Mormul, Roger P. ^[1]

Afiliação do(s) autor(es):Mostrar menos -

^[1] State Univ Maringa UEM, Ctr Biol Sci CCB, Dept Biol DBI, Grad Program Ecol Inland Water Ecosyst PEA, Maringa, Parana - Brazil

^[2] Univ Campinas UNICAMP, Inst Biol, Dept Anim Biol, Lab Multitroph Interact & Biodivers, Campinas - Brazil

^[3] Sino Danish Ctr Educ & Res SDC, Beijing - Peoples R China

^[4] Middle East Tech Univ, Dept Biol Sci, Limnol Lab, Ankara - Turkey

^[5] Middle East Tech Univ, Ctr Ecosyst Res & Implementat, Ankara - Turkey

^[6] Aarhus Univ, Dept Biosci, Silkeborg - Denmark

^[7] Queen Mary Univ London, Sch Biol & Behav Sci, London - England

^[8] Univ Estadual Maringa, Ctr Ciencias Exatas, Dept Estat, Maringa, Parana - Brazil

^[9] Univ Republ, Dept Ecol & Gest Ambiental CURE, Maldonado - Uruguay

^[10] Univ Fed Santa Catarina, Dept Ecol & Zool, Florianopolis, SC - Brazil

^[11] Univ Estado Rio de Janeiro, Rio De Janeiro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Animal Ecology; v. 91, n. 3, p. 551-565, MAR 2022.
• Citações Web of Science: 0

Resumo

Under increasing nutrient loading, shallow lakes may shift from a state of clear water dominated by submerged macrophytes to a turbid state dominated by phytoplankton or a shaded state dominated by floating macrophytes. How such regime shifts mediate the relationship between taxonomic and functional diversities (FD) and lake multifunctionality is poorly understood. We employed a detailed database describing a shallow lake over a 12-year period during which the lake has displayed all the three states (clear, turbid and shaded) to investigate how species richness, FD of fish and zooplankton, ecosystem multifunctionality and five individual ecosystem functions (nitrogen and phosphorus concentrations, standing fish biomass, algae production and light availability) differ among states. We also evaluated how the relationship between biodiversity (species richness and FD) and multifunctionality is affected by regime shifts. We showed that species richness and the FD of fish and zooplankton were highest during the clear state. The clear state also maintained the highest values of multifunctionality as well as standing fish biomass production, algae biomass and light availability, whereas the turbid and shaded states had higher nutrient concentrations. Functional diversity was the best predictor of multifunctionality. The relationship between FD and multifunctionality was strongly positive during the clear state, but such relationship became flatter after the shift to the turbid or shaded state. Our findings illustrate that focusing on functional traits may provide a more mechanistic understanding of how regime shifts affect biodiversity and the consequences for ecosystem functioning. Regime shifts towards a turbid or shaded state negatively affect the taxonomic diversity and FD of fish and zooplankton, which in turn impairs the multifunctionality of shallow lakes. (AU)

• Processo FAPESP: 19/08474-8 - Ecossistemas aquáticos continentais sob mudanças climáticas: impactos em múltiplos níveis de organização
• Beneficiário: Gustavo Quevedo Romero
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático
• Processo FAPESP: 17/26243-8 - Eventos extremos de precipitação e seus efeitos sobre a estrutura de comunidades e funcionamento ecossistêmico
• Beneficiário: Pablo Augusto Poleto Antiqueira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/12225-0 - Unificando determinantes ambientais e espaciais da estrutura de redes tróficas em escalas espaciais
• Beneficiário: Gustavo Quevedo Romero
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Regular