Human impact on the fish diversity in the four largest lakes of Sweden
Degerman, Eva LU
; Hammar, Johan
; Nyberg, Per
and Svardson, Gunnar
(2001)
In Ambio: a Journal of the Human Environment
30(8).
p.522-528
- Abstract
- The four largest Swedish lakes, Vanern, Vattern, Malaren, Hjalmaren, host important commercial fisheries for char, salmon, trout, whitefish, vendace (cisco), perch, pike-perch, pike and eel, i.e. highly diverse biological resources. Case studies illustrate physical, chemical and biological impacts on some of these commercial species caused by constructions of dams and ship canals, eutrophication, and overexploitation. Although some original species have been lost and a few new species have been added, the recent human interference has basically caused major shifts in dominance of the fish community structures because of eutrophication, alterations in the abundance of eel or crayfish, and due to overfishing. The latter is in some cases... (More)
- The four largest Swedish lakes, Vanern, Vattern, Malaren, Hjalmaren, host important commercial fisheries for char, salmon, trout, whitefish, vendace (cisco), perch, pike-perch, pike and eel, i.e. highly diverse biological resources. Case studies illustrate physical, chemical and biological impacts on some of these commercial species caused by constructions of dams and ship canals, eutrophication, and overexploitation. Although some original species have been lost and a few new species have been added, the recent human interference has basically caused major shifts in dominance of the fish community structures because of eutrophication, alterations in the abundance of eel or crayfish, and due to overfishing. The latter is in some cases caused by the Great Lake Fishery Paradox--in an environment with several predators and competitors, but with ample food resources, especially salmonid fish but also species like pike-perch may adapt a life history favoring growth over sexual maturation. If harvested at a conventional size these populations will decline rapidly due to too small spawning stocks. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1122475
- author
- Degerman, Eva
LU
; Hammar, Johan
; Nyberg, Per
and Svardson, Gunnar
- organization
- publishing date
- 2001
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Ambio: a Journal of the Human Environment
- volume
- 30
- issue
- 8
- pages
- 522 - 528
- publisher
- Springer
- external identifiers
-
- pmid:11878026
- scopus:0035544430
- ISSN
- 0044-7447
- language
- English
- LU publication?
- yes
- id
- de45b8ab-d0a3-4851-bd5c-8942a6929024 (old id 1122475)
- date added to LUP
- 2016-04-01 17:07:28
- date last changed
- 2024-01-26 18:41:04
@article{de45b8ab-d0a3-4851-bd5c-8942a6929024,
abstract = {{The four largest Swedish lakes, Vanern, Vattern, Malaren, Hjalmaren, host important commercial fisheries for char, salmon, trout, whitefish, vendace (cisco), perch, pike-perch, pike and eel, i.e. highly diverse biological resources. Case studies illustrate physical, chemical and biological impacts on some of these commercial species caused by constructions of dams and ship canals, eutrophication, and overexploitation. Although some original species have been lost and a few new species have been added, the recent human interference has basically caused major shifts in dominance of the fish community structures because of eutrophication, alterations in the abundance of eel or crayfish, and due to overfishing. The latter is in some cases caused by the Great Lake Fishery Paradox--in an environment with several predators and competitors, but with ample food resources, especially salmonid fish but also species like pike-perch may adapt a life history favoring growth over sexual maturation. If harvested at a conventional size these populations will decline rapidly due to too small spawning stocks.}},
author = {{Degerman, Eva and Hammar, Johan and Nyberg, Per and Svardson, Gunnar}},
issn = {{0044-7447}},
language = {{eng}},
number = {{8}},
pages = {{522--528}},
publisher = {{Springer}},
series = {{Ambio: a Journal of the Human Environment}},
title = {{Human impact on the fish diversity in the four largest lakes of Sweden}},
volume = {{30}},
year = {{2001}},
}