DOI: 10.1111/gcb.13095
论文题名: Warming accelerates termination of a phytoplankton spring bloom by fungal parasites
作者: Frenken T. ; Velthuis M. ; de Senerpont Domis L.N. ; Stephan S. ; Aben R. ; Kosten S. ; van Donk E. ; Van de Waal D.B.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期: 1 起始页码: 299
结束页码: 309
语种: 英语
英文关键词: Bacteria
; Chytrid
; Climate change
; Ecological stoichiometry
; Epidemic
; Rotifer phenology
; Synedra
; Zoospores
Scopus关键词: bacterium
; climate change
; climate effect
; fungus
; global warming
; parasite
; phenology
; phytoplankton
; stoichiometry
; Bacillariophyta
; Keratella
; Synedra
; chlorophyll
; chlorophyll a
; fresh water
; phosphorus
; animal
; bacterium
; Chytridiomycetes
; climate change
; diatom
; food chain
; growth, development and aging
; isolation and purification
; microbiology
; phytoplankton
; population dynamics
; Rotifera
; season
; temperature
; zooplankton
; Animals
; Bacteria
; Chlorophyll
; Chytridiomycota
; Climate Change
; Diatoms
; Food Chain
; Fresh Water
; Phosphorus
; Phytoplankton
; Population Dynamics
; Rotifera
; Seasons
; Temperature
; Zooplankton
英文摘要: Climate change is expected to favour infectious diseases across ecosystems worldwide. In freshwater and marine environments, parasites play a crucial role in controlling plankton population dynamics. Infection of phytoplankton populations will cause a transfer of carbon and nutrients into parasites, which may change the type of food available for higher trophic levels. Some phytoplankton species are inedible to zooplankton, and the termination of their population by parasites may liberate otherwise unavailable carbon and nutrients. Phytoplankton spring blooms often consist of large diatoms inedible for zooplankton, but the zoospores of their fungal parasites may serve as a food source for this higher trophic level. Here, we investigated the impact of warming on the fungal infection of a natural phytoplankton spring bloom and followed the response of a zooplankton community. Experiments were performed in ca. 1000 L indoor mesocosms exposed to a controlled seasonal temperature cycle and a warm (+4 °C) treatment in the period from March to June 2014. The spring bloom was dominated by the diatom Synedra. At the peak of infection over 40% of the Synedra population was infected by a fungal parasite (i.e. a chytrid) in both treatments. Warming did not affect the onset of the Synedra bloom, but accelerated its termination. Peak population density of Synedra tended to be lower in the warm treatments. Furthermore, Synedra carbon: phosphorus stoichiometry increased during the bloom, particularly in the control treatments. This indicates enhanced phosphorus limitation in the control treatments, which may have constrained chytrid development. Timing of the rotifer Keratella advanced in the warm treatments and closely followed chytrid infections. The chytrids' zoospores may thus have served as an alternative food source to Keratella. Our study thus emphasizes the importance of incorporating not only nutrient limitation and grazing, but also parasitism in understanding the response of plankton communities towards global warming. © 2016 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61530
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, Wageningen, Netherlands; Department of Aquatic Ecology and Water Quality Management, Wageningen University, P.O. Box 47, Wageningen, Netherlands; Department of Aquatic Ecology and Environmental Biology, Institute for Water and Wetland Research, Radboud University, P.O. Box 9010, Nijmegen, Netherlands; Department of Biology, University of Utrecht, P.O. Box 80.056, Utrecht, Netherlands
Recommended Citation:
Frenken T.,Velthuis M.,de Senerpont Domis L.N.,et al. Warming accelerates termination of a phytoplankton spring bloom by fungal parasites[J]. Global Change Biology,2016-01-01,22(1)