Sammendrag
1. This paper focuses on the marine foundation eelgrass species,
Zostera marina
, along a gradient from the
northern Baltic Sea to the north-east Atlantic. This vast region supports a minimum of 1480km
2
eelgrass
(maximum
>
2100km
2
), which corresponds to more than four times the previously quanti
fi
ed area of eelgrass in
Western Europe.
2. Eelgrass meadows in the low salinity Baltic Sea support the highest diversity (4
–
6 spp.) of angiosperms
overall, but eelgrass productivity is low (
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