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Contribution to the seaweed flora of Sweden: New or otherwise interesting records from the west coast

Artikel i vetenskaplig tidskrift
Författare Jan Karlsson
Mats Kuylenstierna
Per Åberg
Publicerad i Acta Phytogeographica Suecica
Volym 78
Sidor 49-63
ISSN 0084-5914
Publiceringsår 1992
Publicerad vid Botaniska institutionen, marin botanik
Sidor 49-63
Språk en
Ämneskategorier Marin ekologi, Biologiska vetenskaper, Ekologi

Sammanfattning

Records of attached seaweeds new to the flora of Sweden and records of very rare or otherwise interesting species from the west coast are presented with notes on their morphology, distribution and ecology. Platoma bairdii, Schmitzia hiscockiana, Sphaerococcus coronopifolius, Cryptopleura ramosa, Hypoglossum hypoglossoides, Delamarea attenuata, Sargassum muticum and Protomonostroma undulatum are additions to the flora recorded during the last twenty years. Twenty-four very rare or otherwise interesting species are also listed. Some species previously considered as rare, and some of the new finds, were found to be common. Proposed explanations for the increasing amount of records are: ( 1 ) methodological reasons (diving vs. dredging); (2) increased number of visits to wave-exposed habitats; (3) the occurrence of favourable years resulting in higher abundances. Several species are considered as genuinely rare in their entire geographical distribution area, while some have their present northern distribution boundary at the Swedish west coast.

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