Journal
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
Volume 285, Issue 1876, Pages -Publisher
ROYAL SOC
DOI: 10.1098/rspb.2017.2349
Keywords
Baltic sea; biodiversity; coastal ecosystems; grazing; isostatic rebound; shore meadow
Categories
Funding
- strategic research program EkoKlim at Stockholm University
- Swedish research council Formas [2015-1065]
- Swedish Research Council
- Swedish Environmental Protection Agency through the Swedish LifeWatch Project [829-2009-6278]
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Semi-natural grasslands have been severely affected by agricultural land-use change. However, the isostatic land adjustment following deglaciation in the Northern Hemisphere means that new land is continually being created in coastal areas. We modelled isostatic adjustment during the last 4000 years in a region of the Baltic coast to estimate the emergence of potential grassland habitat. We also compared the alpha and beta diversity of existing managed and abandoned coastal meadows, and assessed their contribution to biodiversity at landscape scales. We estimated that half the 7866 km(2) of emerging land had the potential to become coastal meadow habitat, which is an order of magnitude larger than the total area of all valuable semi-natural grassland in the study region today. The small area of managed coastal habitat remaining was found to have a disproportionate influence on the richness of threatened species at landscape scales, but our results also show that continued management is essential for the maintenance of grassland biodiversity. Our combination of approaches identifies uplifted coastal meadows as an additional original niche for grassland plant species, while highlighting that low-intensity disturbance through grassland management is essential for the maintenance of diversity at multiple scales.
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