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Abstracts - S12 Bentisk økologi
84. Status and trends of Zostera marina in the Limfjorden
Paula Canal-Vergés, Ditte B Tørring, Carsten Formsgaard, Jens Kjerulf Petersen
Dansk Skaldyrcenter (DSC) pc@skaldyrcenter.dk, dt@skaldyrcenter.dk, cf@skaldyrcenter.dk,
jkp@skaldyrcenter.dk
Seagrass species are considered the main key indicator for water quality in Danish coastal waters.
Therefore eelgrass population dynamics have been on focus for the past decades. Eelgrass is known
to be sensitive to a wide variety of environmental factors such as nitrogen load, oxygen availability,
light availability or physical stress. Nevertheless at present it has not been found a specific
parameter which predicts/correlates/determines the fitness of eelgrass in all its geographical
distribution. Therefore, we postulate a multifactorial system rather than a simple correlation to
predict eelgrass development and distribution in the field. We will use the Limfjorden eelgrass
population as a study case. In this multifactorial approach, all known factors affecting eelgrass are
plotted and analyzed together with the current eelgrass distribution at Limfjorden. The aim of such
tool it is to prospect areas with potential for eelgrass recolonization, and to try to identify the main
factors affecting this concrete eelgrass population.
Program 17. danske havforskermøde, 108