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Effects of waterfowl and fish on submerged vegetation and macroinvertebrates

Marklund, Ola LU ; Sandsten, Håkan LU ; Hansson, Lars-Anders LU and Blindow, I (2002) In Freshwater Biology 47(11). p.2049-2059
Abstract
1. With the aim to assess the combined and separate effects of waterfowl and fish on submerged vegetation and macroinvertebrates, we performed a replicated selective exclosure study in a shallow, eutrophic lake in southern Sweden. Our results are presented together with a literature review of the effects of fish and waterfowl on macroinvertebrates and submerged vegetation. 2. Based on our experiment and on published data, we conclude that waterfowl normally will reduce submerged vegetation only at high waterfowl densities, at very low vegetation densities, or in the colonisation phase of the vegetation. 3. Further, we conclude that in shallow temperate eutrophic lakes, a naturally occurring mixed fish assemblage rarely reduces submerged... (More)
1. With the aim to assess the combined and separate effects of waterfowl and fish on submerged vegetation and macroinvertebrates, we performed a replicated selective exclosure study in a shallow, eutrophic lake in southern Sweden. Our results are presented together with a literature review of the effects of fish and waterfowl on macroinvertebrates and submerged vegetation. 2. Based on our experiment and on published data, we conclude that waterfowl normally will reduce submerged vegetation only at high waterfowl densities, at very low vegetation densities, or in the colonisation phase of the vegetation. 3. Further, we conclude that in shallow temperate eutrophic lakes, a naturally occurring mixed fish assemblage rarely reduces submerged vegetation. Unless the vegetation is very sparse, the risk of severe reduction of submerged vegetation as a result of waterfowl or fish grazing, should thereby be low. 4. Even relatively low densities of fish seem to reduce macroinvertebrate biomass, while a mixed waterfowl assemblage rarely has a significant effect on macroinvertebrate biomass. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Freshwater Biology
volume
47
issue
11
pages
2049 - 2059
publisher
Wiley-Blackwell
external identifiers
  • wos:000178848300002
  • scopus:0036828355
ISSN
0046-5070
DOI
10.1046/j.1365-2427.2002.00949.x
language
English
LU publication?
yes
id
c00143f3-f76d-4456-8615-b205900d3376 (old id 146572)
date added to LUP
2007-06-28 14:35:03
date last changed
2017-10-01 03:41:49
@article{c00143f3-f76d-4456-8615-b205900d3376,
  abstract     = {1. With the aim to assess the combined and separate effects of waterfowl and fish on submerged vegetation and macroinvertebrates, we performed a replicated selective exclosure study in a shallow, eutrophic lake in southern Sweden. Our results are presented together with a literature review of the effects of fish and waterfowl on macroinvertebrates and submerged vegetation. 2. Based on our experiment and on published data, we conclude that waterfowl normally will reduce submerged vegetation only at high waterfowl densities, at very low vegetation densities, or in the colonisation phase of the vegetation. 3. Further, we conclude that in shallow temperate eutrophic lakes, a naturally occurring mixed fish assemblage rarely reduces submerged vegetation. Unless the vegetation is very sparse, the risk of severe reduction of submerged vegetation as a result of waterfowl or fish grazing, should thereby be low. 4. Even relatively low densities of fish seem to reduce macroinvertebrate biomass, while a mixed waterfowl assemblage rarely has a significant effect on macroinvertebrate biomass.},
  author       = {Marklund, Ola and Sandsten, Håkan and Hansson, Lars-Anders and Blindow, I},
  issn         = {0046-5070},
  language     = {eng},
  number       = {11},
  pages        = {2049--2059},
  publisher    = {Wiley-Blackwell},
  series       = {Freshwater Biology},
  title        = {Effects of waterfowl and fish on submerged vegetation and macroinvertebrates},
  url          = {http://dx.doi.org/10.1046/j.1365-2427.2002.00949.x},
  volume       = {47},
  year         = {2002},
}