Homeostatic Characteristics of Single Species Fish Stocks in Arctic Lakes
The results of investigations on the fish stocks of seven Arctic lakes covering a period of 23 yr are described. These lakes have remained largely undisturbed since their formation in late glacial times; all but one are completely autonomous and of comparatively small size. Such lakes provide a uniq...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1983
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Online Access: | http://dx.doi.org/10.1139/f83-125 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-125 |
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crcansciencepubl:10.1139/f83-125 2023-12-17T10:23:46+01:00 Homeostatic Characteristics of Single Species Fish Stocks in Arctic Lakes Johnson, Lionel 1983 http://dx.doi.org/10.1139/f83-125 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-125 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 40, issue 7, page 987-1024 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1983 crcansciencepubl https://doi.org/10.1139/f83-125 2023-11-19T13:38:51Z The results of investigations on the fish stocks of seven Arctic lakes covering a period of 23 yr are described. These lakes have remained largely undisturbed since their formation in late glacial times; all but one are completely autonomous and of comparatively small size. Such lakes provide a unique opportunity for the development and testing of conceptual models. In all cases the only fish species present is Arctic charr, Salvelinus alpinus. Length frequency distributions derived from gillnet catch curves are shown to be, within reasonable limits, representative of the actual populations in the lake, and not artifacts of the sampling procedure. Length frequency curves show a unimodal or bimodal distribution and this structure, in the absence of perturbation, appears to remain constant indefinitely. Individuals are of great age but age-at-length is highly variable. Age and size structure are shown to be comparable with the age and size structure of the dominant tree species in a climax forest; it is concluded that forces of great generality fashion these configurations. It is hypothesized that all species tend to move towards a state of least energy dissipation; this can be most readily seen in the dominant species at the climax in an autonomous system. The dominant species is characterized by large individual size, a high degree of uniformity, high total biomass, great mean age, indeterminate age-at-death, and a low incidence of replacement stock. After severe perturbation it is shown that the charr stock returns to a state of least dissipation without oscillation. Absence of oscillation during the return to the initial state, combined with the long-term stability shown in control lakes, indicates the presence of an effective damping mechanism; this in turn indicates the existence of organization within the stock as a whole. Organization develops through an interactive mechanism described under the doctrine of homeokinesis, which is responsible for energy equipartitioning and the maintenance of uniformity. ... Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Fisheries and Aquatic Sciences 40 7 987 1024 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Johnson, Lionel Homeostatic Characteristics of Single Species Fish Stocks in Arctic Lakes |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The results of investigations on the fish stocks of seven Arctic lakes covering a period of 23 yr are described. These lakes have remained largely undisturbed since their formation in late glacial times; all but one are completely autonomous and of comparatively small size. Such lakes provide a unique opportunity for the development and testing of conceptual models. In all cases the only fish species present is Arctic charr, Salvelinus alpinus. Length frequency distributions derived from gillnet catch curves are shown to be, within reasonable limits, representative of the actual populations in the lake, and not artifacts of the sampling procedure. Length frequency curves show a unimodal or bimodal distribution and this structure, in the absence of perturbation, appears to remain constant indefinitely. Individuals are of great age but age-at-length is highly variable. Age and size structure are shown to be comparable with the age and size structure of the dominant tree species in a climax forest; it is concluded that forces of great generality fashion these configurations. It is hypothesized that all species tend to move towards a state of least energy dissipation; this can be most readily seen in the dominant species at the climax in an autonomous system. The dominant species is characterized by large individual size, a high degree of uniformity, high total biomass, great mean age, indeterminate age-at-death, and a low incidence of replacement stock. After severe perturbation it is shown that the charr stock returns to a state of least dissipation without oscillation. Absence of oscillation during the return to the initial state, combined with the long-term stability shown in control lakes, indicates the presence of an effective damping mechanism; this in turn indicates the existence of organization within the stock as a whole. Organization develops through an interactive mechanism described under the doctrine of homeokinesis, which is responsible for energy equipartitioning and the maintenance of uniformity. ... |
format |
Article in Journal/Newspaper |
author |
Johnson, Lionel |
author_facet |
Johnson, Lionel |
author_sort |
Johnson, Lionel |
title |
Homeostatic Characteristics of Single Species Fish Stocks in Arctic Lakes |
title_short |
Homeostatic Characteristics of Single Species Fish Stocks in Arctic Lakes |
title_full |
Homeostatic Characteristics of Single Species Fish Stocks in Arctic Lakes |
title_fullStr |
Homeostatic Characteristics of Single Species Fish Stocks in Arctic Lakes |
title_full_unstemmed |
Homeostatic Characteristics of Single Species Fish Stocks in Arctic Lakes |
title_sort |
homeostatic characteristics of single species fish stocks in arctic lakes |
publisher |
Canadian Science Publishing |
publishDate |
1983 |
url |
http://dx.doi.org/10.1139/f83-125 http://www.nrcresearchpress.com/doi/pdf/10.1139/f83-125 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 40, issue 7, page 987-1024 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f83-125 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
40 |
container_issue |
7 |
container_start_page |
987 |
op_container_end_page |
1024 |
_version_ |
1785560183063183360 |