Sponge grounds, also known as sponge aggregations, are intertidal to deep-sea habitats formed by large accumulations of sponges (glass sponges and/or demosponges), often dominated by a few massive species. Sponge grounds were already reported more than 150 years ago,[1] but the habitat was first fully recognized, studied and described in detail around the Faroe Islands during the inter-Nordic BIOFAR 1 programme 1987–90.[2] These were called Ostur (meaning "cheese" and referring to the appearance of the sponges) by the local fishermen and this name has to some extent entered the scientific literature.[1] Sponge grounds were later found elsewhere in the Northeast Atlantic[3] and in the Northwest Atlantic,[4] as well as near Antarctica.[1] They are now known from many other places worldwide and recognized as key marine habitats.[5]
Sponge grounds are important habitats supporting diverse ecosystems. During a study of outer shelf and upper slope sponge grounds at the Faroe Islands, 242 invertebrate species were found in the vicinity and 115 were associated with the sponges.[6] In general, fish fauna associated with sponge grounds are poorly known, but include rockfish and gadiforms.[1] Sponge grounds are threatened, especially by bottom trawling and other fishing gear, dredging, oil and gas exploration and undersea cables, but potentially also by deep sea mining, carbon dioxide sequestration, pollution and climate change.[1]
^ abcdeHogg, Tendal, Conway, Pomponi, van Soest, Krautter, Roberts (2010). Deep-sea sponge grounds: Reservoirs of Biodiversity. UNEP-WCMC Biodiversity. Vol. 32. Cambridge, UK: UNEP-WCMC. ISBN 978-92-807-3081-4.
^Klitgaard, Anne; Tendal, Ole Secher; Westerberg, H. (1997). Mass occurrences of large sized sponges (Porifera) in Faroe Island (NE-Atlantic) shelf and slope areas: characteristics, distribution and possible causes. University of Southampton. pp. 129–142.
^Klitgaard, A. B.; Tendal, O. S. (2004-04-01). "Distribution and species composition of mass occurrences of large-sized sponges in the northeast Atlantic". Progress in Oceanography. 61 (1): 57–98. Bibcode:2004PrOce..61...57K. doi:10.1016/j.pocean.2004.06.002.
^Murillo, Francisco Javier; Muñoz, Pablo Durán; Cristobo, Javier; Ríos, Pilar; González, Concepción; Kenchington, Ellen; Serrano, Alberto (2012-11-01). "Deep-sea sponge grounds of the Flemish Cap, Flemish Pass and the Grand Banks of Newfoundland (Northwest Atlantic Ocean): Distribution and species composition". Marine Biology Research. 8 (9): 842–854. doi:10.1080/17451000.2012.682583. hdl:10508/927. ISSN 1745-1000. S2CID 83867051.
^Maldonado, Manuel; Aguilar, Ricardo; Bannister, Raymond J.; Bell, James J.; Conway, Kim W.; Dayton, Paul K.; Díaz, Cristina; Gutt, Julian; Kelly, Michelle (2015-01-01). Rossi, Sergio; Bramanti, Lorenzo; Gori, Andrea; Valle, Covadonga Orejas Saco del (eds.). Sponge Grounds as Key Marine Habitats: A Synthetic Review of Types, Structure, Functional Roles, and Conservation Concerns. Springer International Publishing. pp. 1–39. doi:10.1007/978-3-319-17001-5_24-1. hdl:10261/171671. ISBN 978-3-319-17001-5.
^Klitgaard, A.B. (1995). "The fauna associated with the outer shelf and upper slope sponges (Porifera, Demospongiae) at the Faroe Islands, Northeast Atlantic". Sarsia. 80 (1): 1–22. CiteSeerX 10.1.1.376.4604. doi:10.1080/00364827.1995.10413574.
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