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Ecosystem effects of partial fish migration in lakes

Brodersen, Jakob LU ; Ådahl, Emma LU ; Brönmark, Christer LU and Hansson, Lars-Anders LU (2008) In Oikos 117(1). p.40-46
Abstract
Migration is a widespread phenomenon in many ecosystems. Most often, studies on migration have focused on how migration strategies are dependent on ecological parameters, but little attention has been paid to the top-down effect of migration on ecosystem processes. Cyprinid fish in many European lakes undergo partial migration, where a part of the population leaves the lake and enters streams for the winter. In this study, we model the effect of partial migration by fish on lower trophic levels in a lake ecosystem. Our results suggest that spring phyto- and zooplankton dynamics, including occurrences of clear-water phases, can be related to the timing and magnitude of partial migration of planktivorous fish. From our results we conclude... (More)
Migration is a widespread phenomenon in many ecosystems. Most often, studies on migration have focused on how migration strategies are dependent on ecological parameters, but little attention has been paid to the top-down effect of migration on ecosystem processes. Cyprinid fish in many European lakes undergo partial migration, where a part of the population leaves the lake and enters streams for the winter. In this study, we model the effect of partial migration by fish on lower trophic levels in a lake ecosystem. Our results suggest that spring phyto- and zooplankton dynamics, including occurrences of clear-water phases, can be related to the timing and magnitude of partial migration of planktivorous fish. From our results we conclude that partial migration can influence the dynamics of lower trophic levels in the ecosystem. Furthermore, we hypothesize that partial migration may affect the stability of alternative stable states and transitions between them. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Oikos
volume
117
issue
1
pages
40 - 46
publisher
Wiley-Blackwell
external identifiers
  • wos:000251387000006
  • scopus:36749065620
ISSN
1600-0706
DOI
10.1111/j.2007.0030-1299.16118.x
project
CAnMove
language
English
LU publication?
yes
id
0411c38a-f3ee-4f13-8ad6-6c7a0c7f7bf4 (old id 934130)
date added to LUP
2008-01-17 13:48:26
date last changed
2017-05-21 03:39:49
@article{0411c38a-f3ee-4f13-8ad6-6c7a0c7f7bf4,
  abstract     = {Migration is a widespread phenomenon in many ecosystems. Most often, studies on migration have focused on how migration strategies are dependent on ecological parameters, but little attention has been paid to the top-down effect of migration on ecosystem processes. Cyprinid fish in many European lakes undergo partial migration, where a part of the population leaves the lake and enters streams for the winter. In this study, we model the effect of partial migration by fish on lower trophic levels in a lake ecosystem. Our results suggest that spring phyto- and zooplankton dynamics, including occurrences of clear-water phases, can be related to the timing and magnitude of partial migration of planktivorous fish. From our results we conclude that partial migration can influence the dynamics of lower trophic levels in the ecosystem. Furthermore, we hypothesize that partial migration may affect the stability of alternative stable states and transitions between them.},
  author       = {Brodersen, Jakob and Ådahl, Emma and Brönmark, Christer and Hansson, Lars-Anders},
  issn         = {1600-0706},
  language     = {eng},
  number       = {1},
  pages        = {40--46},
  publisher    = {Wiley-Blackwell},
  series       = {Oikos},
  title        = {Ecosystem effects of partial fish migration in lakes},
  url          = {http://dx.doi.org/10.1111/j.2007.0030-1299.16118.x},
  volume       = {117},
  year         = {2008},
}