Assessing the effects of climate change on Baltic Sea macroalgae : implications for the foundation species Fucus vesiculosus L.
Marine macroalgae are important foundation species on rocky shores. The large, habitat-forming species, in particular support a variety of associated flora and fauna. The Baltic Sea is naturally species-poor due to brackish water, and perennial, large macroalgae such as Fucus vesiculosus have high e...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/238810 2023-08-20T04:09:02+02:00 Assessing the effects of climate change on Baltic Sea macroalgae : implications for the foundation species Fucus vesiculosus L. Takolander, Antti University of Helsinki, Faculty of Biological and Environmental Sciences, Organismal and Evolutionary Biology Research Programme Doctoral Programme in Wildlife Biology Tvärminne Zoological Station, University of Helsinki Helsingin yliopisto, bio- ja ympäristötieteellinen tiedekunta Luonnonvaraisten eliöiden tutkimuksen tohtoriohjelma Helsingfors universitet, bio- och miljövetenskapliga fakulteten Doktorandprogrammet i forskning om vilda organismer 2018-08-20T07:07:10Z application/pdf http://hdl.handle.net/10138/238810 eng eng Helsingin yliopisto Helsingfors universitet University of Helsinki 978-951-51-4426-3 http://hdl.handle.net/10138/238810 URN:ISBN:978-951-51-4426-3 Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. ekologia evoluutiobiologia meribiologia Opinnäyte Text Doctoral dissertation (article-based) Artikkeliväitöskirja Artikelavhandling doctoralThesis 2018 ftunivhelsihelda 2023-07-28T06:09:22Z Marine macroalgae are important foundation species on rocky shores. The large, habitat-forming species, in particular support a variety of associated flora and fauna. The Baltic Sea is naturally species-poor due to brackish water, and perennial, large macroalgae such as Fucus vesiculosus have high ecological importance and are characterized as foundation species in hard substrate bottoms. In the Baltic Sea, climate change has been predicted to result in elevated seawater temperatures, declining salinity, caused by increases in rainfall, coastal eutrophication and ocean acidification (OA). These changes may be harmful for macroalgae either directly or through interacting effects. This thesis investigates the potential effects of climate change on the Baltic macroalgae, focusing on the foundation species Fucus vesiculosus. Several ecosystem-level effects emerge from the results of Chapter I. The predicted changes brought about by climate change, declining salinity, increasing eutrophication and more frequent heat waves will likely be highly harmful for perennial foundation species such as brown (e.g. fucoid) and red algae, and favour fast-growing, green filamentous species. This can cause alterations in rocky shore ecosystems especially in the northern areas of the Baltic Sea. The experiments assessed in the systematic literature review of Chapter I allowed estimation of the fundamental abiotic niche of F. vesiculosus in relation to temperature and salinity. F. vesiculosus had a broad temperature optima for growth around 15 oC. Growth rate declined in salinities under 20, which are prevalent in the Baltic Sea. The experiments assessed covered temperature and salinity conditions which are not found in the Baltic under present climate, but may occur in the future, and thus yield important information on potential responses of F. vesiculosus under climate change. The experiments conducted in this thesis showed that the effects of short-term heat waves on F. vesiculosus were more severe under low salinity. Even short ... Doctoral or Postdoctoral Thesis Ocean acidification Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
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Open Polar |
collection |
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
ekologia evoluutiobiologia meribiologia |
spellingShingle |
ekologia evoluutiobiologia meribiologia Takolander, Antti Assessing the effects of climate change on Baltic Sea macroalgae : implications for the foundation species Fucus vesiculosus L. |
topic_facet |
ekologia evoluutiobiologia meribiologia |
description |
Marine macroalgae are important foundation species on rocky shores. The large, habitat-forming species, in particular support a variety of associated flora and fauna. The Baltic Sea is naturally species-poor due to brackish water, and perennial, large macroalgae such as Fucus vesiculosus have high ecological importance and are characterized as foundation species in hard substrate bottoms. In the Baltic Sea, climate change has been predicted to result in elevated seawater temperatures, declining salinity, caused by increases in rainfall, coastal eutrophication and ocean acidification (OA). These changes may be harmful for macroalgae either directly or through interacting effects. This thesis investigates the potential effects of climate change on the Baltic macroalgae, focusing on the foundation species Fucus vesiculosus. Several ecosystem-level effects emerge from the results of Chapter I. The predicted changes brought about by climate change, declining salinity, increasing eutrophication and more frequent heat waves will likely be highly harmful for perennial foundation species such as brown (e.g. fucoid) and red algae, and favour fast-growing, green filamentous species. This can cause alterations in rocky shore ecosystems especially in the northern areas of the Baltic Sea. The experiments assessed in the systematic literature review of Chapter I allowed estimation of the fundamental abiotic niche of F. vesiculosus in relation to temperature and salinity. F. vesiculosus had a broad temperature optima for growth around 15 oC. Growth rate declined in salinities under 20, which are prevalent in the Baltic Sea. The experiments assessed covered temperature and salinity conditions which are not found in the Baltic under present climate, but may occur in the future, and thus yield important information on potential responses of F. vesiculosus under climate change. The experiments conducted in this thesis showed that the effects of short-term heat waves on F. vesiculosus were more severe under low salinity. Even short ... |
author2 |
University of Helsinki, Faculty of Biological and Environmental Sciences, Organismal and Evolutionary Biology Research Programme Doctoral Programme in Wildlife Biology Tvärminne Zoological Station, University of Helsinki Helsingin yliopisto, bio- ja ympäristötieteellinen tiedekunta Luonnonvaraisten eliöiden tutkimuksen tohtoriohjelma Helsingfors universitet, bio- och miljövetenskapliga fakulteten Doktorandprogrammet i forskning om vilda organismer |
format |
Doctoral or Postdoctoral Thesis |
author |
Takolander, Antti |
author_facet |
Takolander, Antti |
author_sort |
Takolander, Antti |
title |
Assessing the effects of climate change on Baltic Sea macroalgae : implications for the foundation species Fucus vesiculosus L. |
title_short |
Assessing the effects of climate change on Baltic Sea macroalgae : implications for the foundation species Fucus vesiculosus L. |
title_full |
Assessing the effects of climate change on Baltic Sea macroalgae : implications for the foundation species Fucus vesiculosus L. |
title_fullStr |
Assessing the effects of climate change on Baltic Sea macroalgae : implications for the foundation species Fucus vesiculosus L. |
title_full_unstemmed |
Assessing the effects of climate change on Baltic Sea macroalgae : implications for the foundation species Fucus vesiculosus L. |
title_sort |
assessing the effects of climate change on baltic sea macroalgae : implications for the foundation species fucus vesiculosus l. |
publisher |
Helsingin yliopisto |
publishDate |
2018 |
url |
http://hdl.handle.net/10138/238810 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
978-951-51-4426-3 http://hdl.handle.net/10138/238810 URN:ISBN:978-951-51-4426-3 |
op_rights |
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty. Publikationen är skyddad av upphovsrätten. Den får läsas och skrivas ut för personligt bruk. Användning i kommersiellt syfte är förbjuden. This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. |
_version_ |
1774721686355050496 |