Are fish populations in temperate streams affected by crayfish? - A field survey and prospects
Degerman, E ; Nilsson, Anders LU
; Nyström, Per
LU
; Nilsson, Erika
LU
and Olsson, Karin
LU
(2007)
In Environmental Biology of Fishes
78(3).
p.231-239
- Abstract
- Fish populations may be affected by predation and competition from various types of organisms, among which crayfish have been suggested as important actors. We here present results from stream surveys, suggesting that neither native noble, Astacus astacus, nor introduced signal crayfish, Pacifastacus leniusculus, necessarily affect fish population densities in temperate stream communities. Comparisons of fish densities within stream sites between years with absence and presence of crayfish showed no effect of either crayfish species. A further analysis of changes in fish densities between periods without and with crayfish in low, intermediate and high densities revealed that crayfish density did neither have an effect on fish densities.... (More)
- Fish populations may be affected by predation and competition from various types of organisms, among which crayfish have been suggested as important actors. We here present results from stream surveys, suggesting that neither native noble, Astacus astacus, nor introduced signal crayfish, Pacifastacus leniusculus, necessarily affect fish population densities in temperate stream communities. Comparisons of fish densities within stream sites between years with absence and presence of crayfish showed no effect of either crayfish species. A further analysis of changes in fish densities between periods without and with crayfish in low, intermediate and high densities revealed that crayfish density did neither have an effect on fish densities. Our study is one of exceptionally few that consider the above aspects in long-term perspectives in natural systems, and we discuss that previously reported divergent results of cray. sh effects on. sh may be highly dependent on specific species and methods used, and that the effects of cray. sh on. sh populations deserve further attention to enable reliable predictions of community processes in streams. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/167163
- author
- Degerman, E
; Nilsson, Anders
LU
; Nyström, Per
LU
; Nilsson, Erika
LU
and Olsson, Karin
LU
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Environmental Biology of Fishes
- volume
- 78
- issue
- 3
- pages
- 231 - 239
- publisher
- Springer
- external identifiers
-
- wos:000244190500011
- scopus:33846991582
- ISSN
- 0378-1909
- DOI
- 10.1007/s10641-006-0041-1
- language
- English
- LU publication?
- yes
- id
- af1e00de-bbb1-41d7-ab8e-6aae7cd66e8c (old id 167163)
- date added to LUP
- 2016-04-01 12:33:08
- date last changed
- 2024-01-09 00:31:02
@article{af1e00de-bbb1-41d7-ab8e-6aae7cd66e8c,
abstract = {{Fish populations may be affected by predation and competition from various types of organisms, among which crayfish have been suggested as important actors. We here present results from stream surveys, suggesting that neither native noble, Astacus astacus, nor introduced signal crayfish, Pacifastacus leniusculus, necessarily affect fish population densities in temperate stream communities. Comparisons of fish densities within stream sites between years with absence and presence of crayfish showed no effect of either crayfish species. A further analysis of changes in fish densities between periods without and with crayfish in low, intermediate and high densities revealed that crayfish density did neither have an effect on fish densities. Our study is one of exceptionally few that consider the above aspects in long-term perspectives in natural systems, and we discuss that previously reported divergent results of cray. sh effects on. sh may be highly dependent on specific species and methods used, and that the effects of cray. sh on. sh populations deserve further attention to enable reliable predictions of community processes in streams.}},
author = {{Degerman, E and Nilsson, Anders and Nyström, Per and Nilsson, Erika and Olsson, Karin}},
issn = {{0378-1909}},
language = {{eng}},
number = {{3}},
pages = {{231--239}},
publisher = {{Springer}},
series = {{Environmental Biology of Fishes}},
title = {{Are fish populations in temperate streams affected by crayfish? - A field survey and prospects}},
url = {{http://dx.doi.org/10.1007/s10641-006-0041-1}},
doi = {{10.1007/s10641-006-0041-1}},
volume = {{78}},
year = {{2007}},
}