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Lake browning counteracts cyanobacteria responses to nutrients: Evidence from phytoplankton dynamics in large enclosure experiments and comprehensive observational data.
Lyche Solheim, Anne; Gundersen, Hege; Mischke, Ute; Skjelbred, Birger; Nejstgaard, Jens C; Guislain, Alexis L N; Sperfeld, Erik; Giling, Darren P; Haande, Sigrid; Ballot, Andreas; Moe, S Jannicke; Stephan, Susanne; Walles, Tim J W; Jechow, Andreas; Minguez, Laetitia; Ganzert, Lars; Hornick, Thomas; Hansson, Truls Hveem; Stratmann, Cleo N; Järvinen, Marko; Drakare, Stina; Carvalho, Laurence; Grossart, Hans-Peter; Gessner, Mark O; Berger, Stella A.
Afiliación
  • Lyche Solheim A; Norwegian Institute for Water Research (NIVA), Oslo, Norway.
  • Gundersen H; Norwegian Institute for Water Research (NIVA), Oslo, Norway.
  • Mischke U; Department of Ecohydrology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany.
  • Skjelbred B; Norwegian Institute for Water Research (NIVA), Oslo, Norway.
  • Nejstgaard JC; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Guislain ALN; Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany.
  • Sperfeld E; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Giling DP; Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany.
  • Haande S; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Ballot A; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Moe SJ; Norwegian Institute for Water Research (NIVA), Oslo, Norway.
  • Stephan S; Norwegian Institute for Water Research (NIVA), Oslo, Norway.
  • Walles TJW; Norwegian Institute for Water Research (NIVA), Oslo, Norway.
  • Jechow A; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Minguez L; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Ganzert L; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Hornick T; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Hansson TH; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Stratmann CN; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Järvinen M; Norwegian Institute for Water Research (NIVA), Oslo, Norway.
  • Drakare S; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Carvalho L; Department of Plankton and Microbial Ecology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Stechlin, Germany.
  • Grossart HP; Finnish Environment Institute (SYKE), Helsinki, Finland.
  • Gessner MO; Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
  • Berger SA; Norwegian Institute for Water Research (NIVA), Oslo, Norway.
Glob Chang Biol ; 30(1): e17013, 2024 Jan.
Article en En | MEDLINE | ID: mdl-37994377
Lakes worldwide are affected by multiple stressors, including climate change. This includes massive loading of both nutrients and humic substances to lakes during extreme weather events, which also may disrupt thermal stratification. Since multi-stressor effects vary widely in space and time, their combined ecological impacts remain difficult to predict. Therefore, we combined two consecutive large enclosure experiments with a comprehensive time-series and a broad-scale field survey to unravel the combined effects of storm-induced lake browning, nutrient enrichment and deep mixing on phytoplankton communities, focusing particularly on potentially toxic cyanobacterial blooms. The experimental results revealed that browning counteracted the stimulating effect of nutrients on phytoplankton and caused a shift from phototrophic cyanobacteria and chlorophytes to mixotrophic cryptophytes. Light limitation by browning was identified as the likely mechanism underlying this response. Deep-mixing increased microcystin concentrations in clear nutrient-enriched enclosures, caused by upwelling of a metalimnetic Planktothrix rubescens population. Monitoring data from a 25-year time-series of a eutrophic lake and from 588 northern European lakes corroborate the experimental results: Browning suppresses cyanobacteria in terms of both biovolume and proportion of the total phytoplankton biovolume. Both the experimental and observational results indicated a lower total phosphorus threshold for cyanobacterial bloom development in clearwater lakes (10-20 µg P L-1 ) than in humic lakes (20-30 µg P L-1 ). This finding provides management guidance for lakes receiving more nutrients and humic substances due to more frequent extreme weather events.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fitoplancton / Cianobacterias País/Región como asunto: Asia Idioma: En Revista: Glob Chang Biol Año: 2024 Tipo del documento: Article País de afiliación: Noruega Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fitoplancton / Cianobacterias País/Región como asunto: Asia Idioma: En Revista: Glob Chang Biol Año: 2024 Tipo del documento: Article País de afiliación: Noruega Pais de publicación: Reino Unido