The Davis Strait - DCE - Nationalt Center for Miljø og Energi
The Davis Strait - DCE - Nationalt Center for Miljø og Energi
The Davis Strait - DCE - Nationalt Center for Miljø og Energi
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Chaetomorpha capillaris<br />
Chaetomorpha melagonium<br />
Chlorochytrium cohnii<br />
Chlorochytrium dermatocolax<br />
Cladophora rupestris<br />
Enteromorpha compressa<br />
Enteromorpha prolifera<br />
Gomontia polyrhiza<br />
Kornmannia leptoderma<br />
Monostroma grevillei<br />
Ostreobium quekettii<br />
Pseudothrix groenlandica<br />
Percursaria percursa<br />
Pringsheimiella scutata<br />
Protomonostroma undulatum<br />
Rhizoclonium riparium<br />
Spongomorpha aeruginosa as Chlorochytrium<br />
inclusum<br />
Ulothrix flacca<br />
Ulothrix speciosa<br />
Ulvaria spelndens<br />
Urospora wormskioldii<br />
Urospora penicilli<strong>for</strong>mis<br />
Acrochaete flustrae<br />
Bolbocoleon piliferum<br />
Derbesia marina<br />
Rosenvingiella constricta<br />
Rosenvingiella polyrhiza<br />
Blidingia minima<br />
4.4 Benthos<br />
Martin Blicher (GINR) & Mikael Sejr (AU)<br />
<strong>The</strong> benthic habitat has a central role in the marine ecosystem in the Arctic,<br />
in terms of elemental cycling, ecosystem function, and biodiversity. <strong>The</strong> benthic<br />
flora is confined to a relatively narrow photic zone extending from the<br />
inter-tidal zone to approximately 40 m depth. <strong>The</strong> biomass and production<br />
of perennial kelps can be significant and the large macroalgae create specific<br />
habitats with a characteristic associated fauna. <strong>The</strong> benthic fauna is more<br />
widespread and is found at all depths and all types of substrate. <strong>The</strong> benthic<br />
fauna is often very species rich and more than 100 different species per m 2<br />
are typically found in undisturbed soft sediments (Sejr et al. 2010a, Sejr et al.<br />
2010b). Three benthic species are fished commercially in Greenland waters.<br />
<strong>The</strong> scallop (Chlamys islandica) and the snow crab (Chionoecetes opilio) live directly<br />
on the sea floor, whereas the northern shrimp (Pandalus borealis) is<br />
found closely associated with the bottom. Moreover, there have been attempts<br />
to develop commercial exploitation of blue mussels (Mytilus edulis),<br />
sea urchins (Strongylocentrotus sp.) and sea cucumbers (Cucumaria sp.).<br />
<strong>The</strong> benthic community is affected by a multitude of different biol<strong>og</strong>ical and<br />
physical parameters; with temperature, depth, food input, sediment composition,<br />
particle load, disturbance level (e.g. ice scouring) and hydr<strong>og</strong>raphical<br />
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