Fishing restrictions is the essential protection method of the Saimaa ringed seal
The Saimaa ringed seal (Pusa hispida saimensis) is an endemic relict of the last ice age that inhabits a fragmented freshwater Lake Saimaa in Finland. This small seal population (current population size ca. 370-380 individuals) is one of the most endangered seals in the world. The high mortality rat...
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Open Science Centre, University of Jyväskylä
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ftjyvaeskylaenun:oai:jyx.jyu.fi:123456789/62013 2023-05-15T18:03:47+02:00 Fishing restrictions is the essential protection method of the Saimaa ringed seal Koskela, Jouni Auttila, Miina Tiilikainen, Raisa Sipilä, Tero 2018 text/html fulltext https://doi.org/10.17011/conference/eccb2018/107605 http://urn.fi/ eng eng Open Science Centre, University of Jyväskylä https://peerageofscience.org/conference/eccb2018/107605/ ECCB2018: 5th European Congress of Conservation Biology. 12th - 15th of June 2018, Jyväskylä, Finland Koskela, J., Auttila, M., Tiilikainen, R. and Sipilä, T. (2018). Fishing restrictions is the essential protection method of the Saimaa ringed seal. 5th European Congress of Conservation Biology. doi:10.17011/conference/eccb2018/107605 doi:10.17011/conference/eccb2018/107605 http://urn.fi/ CC BY 4.0 © the Authors, 2018 openAccess http://creativecommons.org/licenses/by/4.0/ CC-BY Article http://purl.org/eprint/type/ConferenceItem conference paper not in proceedings publishedVersion conferenceObject 2018 ftjyvaeskylaenun https://doi.org/10.17011/conference/eccb2018/107605 2021-09-23T20:20:05Z The Saimaa ringed seal (Pusa hispida saimensis) is an endemic relict of the last ice age that inhabits a fragmented freshwater Lake Saimaa in Finland. This small seal population (current population size ca. 370-380 individuals) is one of the most endangered seals in the world. The high mortality rate of young seals due to by-catch mortality of fishing and insufficient snow conditions during breeding season are the most serious threats to the population. The fishing restrictions are the main short-term conservation measures of the Saimaa ringed seal. Springtime fishing restrictions have been set to reduce by-catch mortality of weaned pups. Certain fishing methods which can kill also adult seals, are totally forbidden in the main parts of the Saimaa ringed seal’s distribution area. The fishing restriction areas that covered about 13% of the Lake Saimaa in 2007, increased covering 61% of the lake in 2016. At the same time the seal population size has increased from around 260 to 360 individuals, and the annual pup production from ca. 50 pups to over 80 pups. Altogether, the fishing restrictions is the effective method to diminish mortality of especially juvenile Saimaa ringed seals. However, the pre-weaning pup mortality of the ringed seal has increased in 21st century due to poor snow conditions induced by climate change. Although the new methods to decrease the pre-weaning mortality are being developed and implemented in the current LIFE Saimaa seal project, global warming is a growing threat to the juvenile survival of the seal. Therefore, the fishing restrictions is the essential conservation method also in the future. peerReviewed Article in Journal/Newspaper Pusa hispida ringed seal JYX - Jyväskylä University Digital Archive Proceedings of the 5th European Congress of Conservation Biology |
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Open Polar |
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JYX - Jyväskylä University Digital Archive |
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ftjyvaeskylaenun |
language |
English |
description |
The Saimaa ringed seal (Pusa hispida saimensis) is an endemic relict of the last ice age that inhabits a fragmented freshwater Lake Saimaa in Finland. This small seal population (current population size ca. 370-380 individuals) is one of the most endangered seals in the world. The high mortality rate of young seals due to by-catch mortality of fishing and insufficient snow conditions during breeding season are the most serious threats to the population. The fishing restrictions are the main short-term conservation measures of the Saimaa ringed seal. Springtime fishing restrictions have been set to reduce by-catch mortality of weaned pups. Certain fishing methods which can kill also adult seals, are totally forbidden in the main parts of the Saimaa ringed seal’s distribution area. The fishing restriction areas that covered about 13% of the Lake Saimaa in 2007, increased covering 61% of the lake in 2016. At the same time the seal population size has increased from around 260 to 360 individuals, and the annual pup production from ca. 50 pups to over 80 pups. Altogether, the fishing restrictions is the effective method to diminish mortality of especially juvenile Saimaa ringed seals. However, the pre-weaning pup mortality of the ringed seal has increased in 21st century due to poor snow conditions induced by climate change. Although the new methods to decrease the pre-weaning mortality are being developed and implemented in the current LIFE Saimaa seal project, global warming is a growing threat to the juvenile survival of the seal. Therefore, the fishing restrictions is the essential conservation method also in the future. peerReviewed |
format |
Article in Journal/Newspaper |
author |
Koskela, Jouni Auttila, Miina Tiilikainen, Raisa Sipilä, Tero |
spellingShingle |
Koskela, Jouni Auttila, Miina Tiilikainen, Raisa Sipilä, Tero Fishing restrictions is the essential protection method of the Saimaa ringed seal |
author_facet |
Koskela, Jouni Auttila, Miina Tiilikainen, Raisa Sipilä, Tero |
author_sort |
Koskela, Jouni |
title |
Fishing restrictions is the essential protection method of the Saimaa ringed seal |
title_short |
Fishing restrictions is the essential protection method of the Saimaa ringed seal |
title_full |
Fishing restrictions is the essential protection method of the Saimaa ringed seal |
title_fullStr |
Fishing restrictions is the essential protection method of the Saimaa ringed seal |
title_full_unstemmed |
Fishing restrictions is the essential protection method of the Saimaa ringed seal |
title_sort |
fishing restrictions is the essential protection method of the saimaa ringed seal |
publisher |
Open Science Centre, University of Jyväskylä |
publishDate |
2018 |
url |
https://doi.org/10.17011/conference/eccb2018/107605 http://urn.fi/ |
genre |
Pusa hispida ringed seal |
genre_facet |
Pusa hispida ringed seal |
op_relation |
https://peerageofscience.org/conference/eccb2018/107605/ ECCB2018: 5th European Congress of Conservation Biology. 12th - 15th of June 2018, Jyväskylä, Finland Koskela, J., Auttila, M., Tiilikainen, R. and Sipilä, T. (2018). Fishing restrictions is the essential protection method of the Saimaa ringed seal. 5th European Congress of Conservation Biology. doi:10.17011/conference/eccb2018/107605 doi:10.17011/conference/eccb2018/107605 http://urn.fi/ |
op_rights |
CC BY 4.0 © the Authors, 2018 openAccess http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.17011/conference/eccb2018/107605 |
container_title |
Proceedings of the 5th European Congress of Conservation Biology |
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1766174798301364224 |