Continued decline of the bladderwrack, Fucus vesiculosus, in the Archipelago Sea, northern Baltic proper.

Before the 1980s, the bladderwrack (Fucus vesiculosus) formed extensive belts along the SW coast of Finland, but already then it began to decline especially in sheltered bays of the inner archipelago. We studied underwater vegetation by scuba diving in 1993–2007. By 2007, six out of eleven sites had...

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Bibliographic Details
Main Authors: Ilppo Vuorinen, Petri Vahteri
Other Authors: PÄÄT Saaristomeren tutkimuslaitos, PÄÄT Archipelago Research Institute, 2606012
Language:English
Published: FINNISH ENVIRONMENT INST 2022
Subjects:
Boreal Environment Research
Online Access:https://www.utupub.fi/handle/10024/156010
http://www.borenv.net/BER/pdfs/preprints/Vahteri&Vuorinen.pdf
Description
Summary:Before the 1980s, the bladderwrack (Fucus vesiculosus) formed extensive belts along the SW coast of Finland, but already then it began to decline especially in sheltered bays of the inner archipelago. We studied underwater vegetation by scuba diving in 1993–2007. By 2007, six out of eleven sites had lost their Fucus belts, and sheltered bays had become refuges for the bladderwrack. In 2006–2007, we studied the effects of temperature, transparency, bottom type, shoreline orientation and location on the bladderwrack distributions and depth penetrations at 61 locations across different archipelago zones. Of these, only location indicated a possible effect.

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