Environmental factors and uncertainty in fisheries management in the northern Baltic Sea
The Baltic Sea is a geologically young, large brackish water basin, and few of the species living there have fully adapted to its special conditions. Many of the species live on the edge of their distribution range in terms of one or more environmental variables such as salinity or temperature. Envi...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/22154 2023-08-20T04:09:31+02:00 Environmental factors and uncertainty in fisheries management in the northern Baltic Sea Ympäristötekijät ja epävarmuus kalastuksen säätelyssä pohjoisella Itämerellä Uusitalo, Laura Lane, Daniel University of Helsinki, Faculty of Biosciences, Department of Biological and Environmental Sciences, Aquatic Sciences University of Helsinki, Faculty of Science, Rolf Nevanlinna Institute Helsingin yliopisto, biotieteellinen tiedekunta, bio- ja ympäristötieteiden laitos Helsingfors universitet, biovetenskapliga fakulteten, institutionen för bio- och miljövetenskaper Kuikka, Sakari 2010-11-25T13:19:36Z application/pdf http://hdl.handle.net/10138/22154 eng eng Helsingin yliopisto Helsingfors universitet University of Helsinki URN:ISBN:978-952-92-2009-0 Yliopistopaino: 2007 http://hdl.handle.net/10138/22154 URN:ISBN:978-952-10-3904-1 Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. kalataloustiede Text Doctoral dissertation (article-based) Artikkeliväitöskirja Artikelavhandling doctoralThesis 2010 ftunivhelsihelda 2023-07-28T06:27:08Z The Baltic Sea is a geologically young, large brackish water basin, and few of the species living there have fully adapted to its special conditions. Many of the species live on the edge of their distribution range in terms of one or more environmental variables such as salinity or temperature. Environmental fluctuations are know to cause fluctuations in populations abundance, and this effect is especially strong near the edges of the distribution range, where even small changes in an environmental variable can be critical to the success of a species. This thesis examines which environmental factors are the most important in relation to the success of various commercially exploited fish species in the northern Baltic Sea. It also examines the uncertainties related to fish stocks current and potential status as well as to their relationship with their environment. The aim is to quantify the uncertainties related to fisheries and environmental management, to find potential management strategies that can be used to reduce uncertainty in management results and to develop methodology related to uncertainty estimation in natural resources management. Bayesian statistical methods are utilized due to their ability to treat uncertainty explicitly in all parts of the statistical model. The results show that uncertainty about important parameters of even the most intensively studied fish species such as salmon (Salmo salar L.) and Baltic herring (Clupea harengus membras L.) is large. On the other hand, management approaches that reduce uncertainty can be found. These include utilising information about ecological similarity of fish stocks and species, and using management variables that are directly related to stock parameters that can be measured easily and without extrapolations or assumptions. Itämeri on ainutlaatuinen ja herkkä ekosysteemi. Tämä maailman suurimpiin kuuluva murtovesiallas on geologisesti nuori, ja useimmat siinä elävät lajit ovat sopeutuneet sen olosuhteisiin vain osittain. Suomen rannikon ... Doctoral or Postdoctoral Thesis Salmo salar Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
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Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
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ftunivhelsihelda |
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English |
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kalataloustiede |
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kalataloustiede Uusitalo, Laura Environmental factors and uncertainty in fisheries management in the northern Baltic Sea |
topic_facet |
kalataloustiede |
description |
The Baltic Sea is a geologically young, large brackish water basin, and few of the species living there have fully adapted to its special conditions. Many of the species live on the edge of their distribution range in terms of one or more environmental variables such as salinity or temperature. Environmental fluctuations are know to cause fluctuations in populations abundance, and this effect is especially strong near the edges of the distribution range, where even small changes in an environmental variable can be critical to the success of a species. This thesis examines which environmental factors are the most important in relation to the success of various commercially exploited fish species in the northern Baltic Sea. It also examines the uncertainties related to fish stocks current and potential status as well as to their relationship with their environment. The aim is to quantify the uncertainties related to fisheries and environmental management, to find potential management strategies that can be used to reduce uncertainty in management results and to develop methodology related to uncertainty estimation in natural resources management. Bayesian statistical methods are utilized due to their ability to treat uncertainty explicitly in all parts of the statistical model. The results show that uncertainty about important parameters of even the most intensively studied fish species such as salmon (Salmo salar L.) and Baltic herring (Clupea harengus membras L.) is large. On the other hand, management approaches that reduce uncertainty can be found. These include utilising information about ecological similarity of fish stocks and species, and using management variables that are directly related to stock parameters that can be measured easily and without extrapolations or assumptions. Itämeri on ainutlaatuinen ja herkkä ekosysteemi. Tämä maailman suurimpiin kuuluva murtovesiallas on geologisesti nuori, ja useimmat siinä elävät lajit ovat sopeutuneet sen olosuhteisiin vain osittain. Suomen rannikon ... |
author2 |
Lane, Daniel University of Helsinki, Faculty of Biosciences, Department of Biological and Environmental Sciences, Aquatic Sciences University of Helsinki, Faculty of Science, Rolf Nevanlinna Institute Helsingin yliopisto, biotieteellinen tiedekunta, bio- ja ympäristötieteiden laitos Helsingfors universitet, biovetenskapliga fakulteten, institutionen för bio- och miljövetenskaper Kuikka, Sakari |
format |
Doctoral or Postdoctoral Thesis |
author |
Uusitalo, Laura |
author_facet |
Uusitalo, Laura |
author_sort |
Uusitalo, Laura |
title |
Environmental factors and uncertainty in fisheries management in the northern Baltic Sea |
title_short |
Environmental factors and uncertainty in fisheries management in the northern Baltic Sea |
title_full |
Environmental factors and uncertainty in fisheries management in the northern Baltic Sea |
title_fullStr |
Environmental factors and uncertainty in fisheries management in the northern Baltic Sea |
title_full_unstemmed |
Environmental factors and uncertainty in fisheries management in the northern Baltic Sea |
title_sort |
environmental factors and uncertainty in fisheries management in the northern baltic sea |
publisher |
Helsingin yliopisto |
publishDate |
2010 |
url |
http://hdl.handle.net/10138/22154 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_relation |
URN:ISBN:978-952-92-2009-0 Yliopistopaino: 2007 http://hdl.handle.net/10138/22154 URN:ISBN:978-952-10-3904-1 |
op_rights |
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. |
_version_ |
1774722533765939200 |