Population stability in salmon species: effects of population size and female reproductive allocation
Summary Population stability (i.e. level of temporal variation in population abundance) is linked commonly to levels of environmental disturbances. However, populations may also differ in their propensity to dampen or amplify the effects of exogenous forces. Here time‐series of population estimates...
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crwiley:10.1046/j.1365-2656.2003.00752.x 2024-06-02T08:13:18+00:00 Population stability in salmon species: effects of population size and female reproductive allocation Einum, Sigurd Fleming, Ian A. Côté, Isabelle M. Reynolds, John D. 2003 http://dx.doi.org/10.1046/j.1365-2656.2003.00752.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2656.2003.00752.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2656.2003.00752.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Animal Ecology volume 72, issue 5, page 811-821 ISSN 0021-8790 1365-2656 journal-article 2003 crwiley https://doi.org/10.1046/j.1365-2656.2003.00752.x 2024-05-03T11:45:26Z Summary Population stability (i.e. level of temporal variation in population abundance) is linked commonly to levels of environmental disturbances. However, populations may also differ in their propensity to dampen or amplify the effects of exogenous forces. Here time‐series of population estimates were used to test for such differences among 104 populations of six salmon species. At the species level, Atlantic ( Salmo salar L.), chinook ( Oncorhynchus tshawytscha Walbaum) and coho salmon ( O. kisutch W) were less variable than sockeye ( O. nerka W) and pink salmon ( O. gorbuscha W). Chum salmon ( O. keta W) was more similar to sockeye and pink salmon. These differences may be related in part to differences in body size, and hence susceptibility to adverse environmental conditions, at the time when they migrate to the sea or lakes. At the population level no effect of fecundity on variability was found, in contrast to findings for marine fishes, nor of egg size. Whereas substantial differences in the temporal stability of environmental factors among geographically close populations may over‐ride any effects of fecundity or egg size in fresh water, this is less likely in the marine environment where spatial autocorrelations of environmental variability are more pronounced. Variation in population sizes was related positively to the duration of time‐series when using standard deviations of ln‐transformed population estimates, and also when using linearly detrended population variation, suggesting non‐linear long‐term abundance trends in salmon populations that extend beyond the 7‐year period of the shortest time‐series. When controlling for differences among species, stability increased with increasing population size, and it is hypothesized that this is due to large populations having a more complex spatial and genetic structure than small populations due to wider spatial distribution. The effects of population size on stability, as well as differences in stability among species, suggest that population‐ and ... Article in Journal/Newspaper Pink salmon Salmo salar Wiley Online Library Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) Journal of Animal Ecology 72 5 811 821 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Summary Population stability (i.e. level of temporal variation in population abundance) is linked commonly to levels of environmental disturbances. However, populations may also differ in their propensity to dampen or amplify the effects of exogenous forces. Here time‐series of population estimates were used to test for such differences among 104 populations of six salmon species. At the species level, Atlantic ( Salmo salar L.), chinook ( Oncorhynchus tshawytscha Walbaum) and coho salmon ( O. kisutch W) were less variable than sockeye ( O. nerka W) and pink salmon ( O. gorbuscha W). Chum salmon ( O. keta W) was more similar to sockeye and pink salmon. These differences may be related in part to differences in body size, and hence susceptibility to adverse environmental conditions, at the time when they migrate to the sea or lakes. At the population level no effect of fecundity on variability was found, in contrast to findings for marine fishes, nor of egg size. Whereas substantial differences in the temporal stability of environmental factors among geographically close populations may over‐ride any effects of fecundity or egg size in fresh water, this is less likely in the marine environment where spatial autocorrelations of environmental variability are more pronounced. Variation in population sizes was related positively to the duration of time‐series when using standard deviations of ln‐transformed population estimates, and also when using linearly detrended population variation, suggesting non‐linear long‐term abundance trends in salmon populations that extend beyond the 7‐year period of the shortest time‐series. When controlling for differences among species, stability increased with increasing population size, and it is hypothesized that this is due to large populations having a more complex spatial and genetic structure than small populations due to wider spatial distribution. The effects of population size on stability, as well as differences in stability among species, suggest that population‐ and ... |
format |
Article in Journal/Newspaper |
author |
Einum, Sigurd Fleming, Ian A. Côté, Isabelle M. Reynolds, John D. |
spellingShingle |
Einum, Sigurd Fleming, Ian A. Côté, Isabelle M. Reynolds, John D. Population stability in salmon species: effects of population size and female reproductive allocation |
author_facet |
Einum, Sigurd Fleming, Ian A. Côté, Isabelle M. Reynolds, John D. |
author_sort |
Einum, Sigurd |
title |
Population stability in salmon species: effects of population size and female reproductive allocation |
title_short |
Population stability in salmon species: effects of population size and female reproductive allocation |
title_full |
Population stability in salmon species: effects of population size and female reproductive allocation |
title_fullStr |
Population stability in salmon species: effects of population size and female reproductive allocation |
title_full_unstemmed |
Population stability in salmon species: effects of population size and female reproductive allocation |
title_sort |
population stability in salmon species: effects of population size and female reproductive allocation |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1046/j.1365-2656.2003.00752.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2656.2003.00752.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2656.2003.00752.x |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) ENVELOPE(-130.143,-130.143,54.160,54.160) |
geographic |
Keta Sockeye |
geographic_facet |
Keta Sockeye |
genre |
Pink salmon Salmo salar |
genre_facet |
Pink salmon Salmo salar |
op_source |
Journal of Animal Ecology volume 72, issue 5, page 811-821 ISSN 0021-8790 1365-2656 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-2656.2003.00752.x |
container_title |
Journal of Animal Ecology |
container_volume |
72 |
container_issue |
5 |
container_start_page |
811 |
op_container_end_page |
821 |
_version_ |
1800736746600660992 |