Detailed visual seabed survey at drilling site 7218/11-1
Detailed visual seabed survey at drilling site 7218/11-1
Detailed visual seabed survey at drilling site 7218/11-1
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Figure7. Over4 tonnesof sponges(presumablyaccidentally)collectedin a trawl duringa researchexpeditionto<br />
the Tromsøflaket, northern Norway in 2007. Image: Norwegian Research Institute<br />
(http://www.imr.no/tokt/toktomtaler/ okosystemtoktet/toktdagbok_2007/dekket_fullt_av_svamp/nb -no).<br />
TheNorwegianseafloorand habit<strong>at</strong> mappingprogrammeMAREANOhascharacterizedspongebeds<br />
asa habit<strong>at</strong> on the Tromsøflaket(seewww.mareano.no– <strong>at</strong> time of writing, spongemap facility out<br />
of order on web<strong>site</strong>).Densespongeaggreg<strong>at</strong>ionsare knownglobally.Geodiaspongebedshavebeen<br />
well documentedalsoin the north-westernAtlantic(Canada;Figure8).<br />
Figure 8. Geodia sponge assemblagein the Northwest Atlantic. Image: Northwest Atlantic Fisheries<br />
Organis<strong>at</strong>ion).<br />
In European w<strong>at</strong>ers, <strong>at</strong>tention has been raised by OSPARto dense, habit<strong>at</strong>-forming sponge<br />
associ<strong>at</strong>ions(Figure9).<br />
Akvaplan-niva AS, 9296 Tromsø<br />
14 www.akvaplan.niva.no
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