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Predicted warming and browning affect timing and magnitude of plankton phenological events in lakes: a mesocosm study

Nicolle, Alice LU ; Hallgren, Per LU ; von Einem, Jessica LU ; Kritzberg, Emma LU ; Granéli, Wilhelm LU ; Persson, Anders LU ; Brönmark, Christer LU and Hansson, Lars-Anders LU (2012) In Freshwater Biology 57(4). p.684-695
Abstract
1. Aquatic ecosystems in Northern Europe are expected to face increases in temperature and water colour (TB) in future. While effects of these factors have been studied separately, it is unknown whether and how a combination of them might affect phenological events and trophic interactions. 2. In a mesocosm study, we combined both factors to create conditions expected to arise during the coming century. We focused on quantifying effects on timing and magnitude of plankton spring phenological events and identifying possible mismatches between resources (phytoplankton) and consumers (zooplankton). 3. We found that the increases in TB had important effects on timing and abundance of different plankton groups. While increased temperature led... (More)
1. Aquatic ecosystems in Northern Europe are expected to face increases in temperature and water colour (TB) in future. While effects of these factors have been studied separately, it is unknown whether and how a combination of them might affect phenological events and trophic interactions. 2. In a mesocosm study, we combined both factors to create conditions expected to arise during the coming century. We focused on quantifying effects on timing and magnitude of plankton spring phenological events and identifying possible mismatches between resources (phytoplankton) and consumers (zooplankton). 3. We found that the increases in TB had important effects on timing and abundance of different plankton groups. While increased temperature led to an earlier peak in phytoplankton and zooplankton and a change in the relative timing of different zooplankton groups, increased water colour reduced chlorophyll-a concentrations. 4. Increased TB together benefitted cladocerans and calanoid copepods and led to stronger top-down control of algae by zooplankton. There was no sign of a mismatch between primary producers and grazers as reported from other studies. 5. Our results point towards an earlier onset of plankton spring growth in shallow lakes in future with a stronger top-down control of phytoplankton by zooplankton grazers. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
climate change, lakes, phenology, phytoplankton, spring, temperature, water colour, zooplankton
in
Freshwater Biology
volume
57
issue
4
pages
684 - 695
publisher
Wiley-Blackwell
external identifiers
  • wos:000301227000005
  • scopus:84858071076
ISSN
0046-5070
DOI
10.1111/j.1365-2427.2012.02733.x
project
BECC
language
English
LU publication?
yes
id
416c4bcf-86e4-4bda-bb96-e41453ce0367 (old id 2587630)
date added to LUP
2012-05-30 15:54:18
date last changed
2017-09-10 04:07:21
@article{416c4bcf-86e4-4bda-bb96-e41453ce0367,
  abstract     = {1. Aquatic ecosystems in Northern Europe are expected to face increases in temperature and water colour (TB) in future. While effects of these factors have been studied separately, it is unknown whether and how a combination of them might affect phenological events and trophic interactions. 2. In a mesocosm study, we combined both factors to create conditions expected to arise during the coming century. We focused on quantifying effects on timing and magnitude of plankton spring phenological events and identifying possible mismatches between resources (phytoplankton) and consumers (zooplankton). 3. We found that the increases in TB had important effects on timing and abundance of different plankton groups. While increased temperature led to an earlier peak in phytoplankton and zooplankton and a change in the relative timing of different zooplankton groups, increased water colour reduced chlorophyll-a concentrations. 4. Increased TB together benefitted cladocerans and calanoid copepods and led to stronger top-down control of algae by zooplankton. There was no sign of a mismatch between primary producers and grazers as reported from other studies. 5. Our results point towards an earlier onset of plankton spring growth in shallow lakes in future with a stronger top-down control of phytoplankton by zooplankton grazers.},
  author       = {Nicolle, Alice and Hallgren, Per and von Einem, Jessica and Kritzberg, Emma and Granéli, Wilhelm and Persson, Anders and Brönmark, Christer and Hansson, Lars-Anders},
  issn         = {0046-5070},
  keyword      = {climate change,lakes,phenology,phytoplankton,spring,temperature,water colour,zooplankton},
  language     = {eng},
  number       = {4},
  pages        = {684--695},
  publisher    = {Wiley-Blackwell},
  series       = {Freshwater Biology},
  title        = {Predicted warming and browning affect timing and magnitude of plankton phenological events in lakes: a mesocosm study},
  url          = {http://dx.doi.org/10.1111/j.1365-2427.2012.02733.x},
  volume       = {57},
  year         = {2012},
}