“It’s not possible to survey each square meter manually in the national park. That’s why I’ve done what experienced mushroom pickers do when they’re looking for chanterelles. I’ve studied what the seabed should look like in order for different benthic animals to thrive, so that we can predict where certain species might be living,” says Genoveva Gonzalez Mirelis at the Department of Marine Ecology at the University of Gothenburg.
Link to underwater film from Kosterhavet National Park:
2 million map tiles
To be able to predict where different kinds of benthic species are in Kosterhavet using computer models based on knowledge of deepsea and seabed conditions, Genoveva Gonzalez Mirelis began by dividing up the entire seabed in the national park into 15 x 15 metre squares. This gave her basic data comprising more than two million map tiles, which were divided up into different types of seabed.
Using a geographical information system, GIS, she then produced a map of the occurrence of nine different types of benthic communities in Kosterhavet, including communities that were dominated by deepwater corals and Norway lobster. The method developed by Genoveva Gonzalez Mirelis can also be used to analyse other marine areas.
Link to the interactive map:
Basic data for marine planning
In order to preserve environments and species for future generations there are special regulations within Kosterhavet National Park, for example as regards anchorage and trawling. Good management requires a marine plan that clarifies which interests have priority in different areas, which is why different regulations are needed for each zone in the park. New legislation for marine planning is expected to come into force during 2012.
“I hope that my results can contribute towards the future management of Kosterhavet National Park, so that we can continue to enjoy Koster prawns with a clear conscience for the foreseeable future.”
The thesis Spatial distribution and conservation planning of seabed biological diversity is being defended at the University of Gothenburg on 9 December. Supervisor: Mats Lindegarth.
Link to thesis: http://hdl.handle.net/2077/27954
Caption to video: In this video you can see a selection of images from stony seabeds in the Kosterfjord area, with species such as the soft corals Dead Man’s Finger (Alcyonium digitatum) and Swiftia rosea, the peacock worm Sabella pavonina, the Geodia barretti sponge, the bivalve clam Acesta excavata, deepsea anemones such as Urticina Eques and Bolocera tuediae, and the king crab (Lithodes maja).
The other half of the film shows images of deepsea coral colonies in the area Säcken; including the coral Lophelia pertusa, which lives jointly with the Mycale Lingua sponge, and the sea lily Hathrometra sarsii, which you can see swimming with its five arms.
Photo: The University of Gothenburg
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