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22.05.2014 |
| Dato | tir 03 jun |
| Tid | 15:00 — 16:00 |
| Sted | Arctic Research Centre (ARC), C.F. Møllers Allé 8, building 1110, room 214 |
Presentation by Dorte Krause-Jensen, Department of Bioscience, Aarhus
Warming and associated melting of sea-ice increase the illumination of coastal Arctic seafloors and set the scene for expansion of vegetated habitats. With a special focus on Greenland, the presentation addresses the potential role of coastal Arctic vegetated ecosystems in a warmer future as a contribution to understanding effects of climate change in coastal Arctic ecosystems. The results and ideas were initiated through international collaboration in the EU FP7-project 'Arctic Tipping Points'.
The study explores vegetation response along natural spatio-temporal gradients in water temperature and sea-ice cover to identify relationships between vegetation response and climatic variables and on this basis predict the future role of vegetated habitats in the Arctic. Patterns in distribution, abundance, production and phenology of tidal macroalgae, seagrasses and kelp forests were identified along Greenland's extended coastline from high-Arctic to subarctic conditions and further compared to temperate systems.
The findings suggest a northward expansion and increased importance of the coastal vegetation in a warmer future with vegetation abundance matching that in South though the growth season starts later and the biomass turnover is slower in the Arctic.