Deep-Water Coral Reefs: Unique Biodiversity Hot-Spots by Martin Hovland

By Martin Hovland

Deep-water coral reefs are chanced on alongside huge sections of the outer continental cabinets and slopes of Europe, from North Cape to the Gulf of Cadiz, and since in addition they ensue alongside the Atlantic seaboard of united states, the Gulf of Mexico, off Brazil, within the Mediterranean, and rancid New Zealand, they're at present being exact by way of foreign teams of marine scientists. they've got turn into well known and opportune deep-water study objectives simply because they give interesting frontier exploration, mixed with a complete plethora of contemporary clinical tools, reminiscent of deep-sea drilling, sampling, handheld remote control surveying and documentation. in addition they symbolize well timed possibilities for extra advancements in the program of geochemistry, good isotope learn, bacterial sciences, together with DNA-sequestering, and clinical study (search for bioactive compounds). The built-in Ocean Drilling application (IODP) has prepared a deep-sea medical drilling crusade on tremendous carbonate banks off eire. as the reefs presently defy conventional marine-ecological theories, they characterize destiny study possibilities and may take pleasure in clinical scrutiny for a few years to return.

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Extra resources for Deep-Water Coral Reefs: Unique Biodiversity Hot-Spots (Springer Praxis Books Life Sciences)

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2000). Because fjord threshold moraines typically cause local current acceleration, it is suspected that the reefs preferentially build up there because of higher-than-background nutrient concentrations associated with increased nutrient flux. But, even so, a groundwater seep relationship cannot be ruled out. There are three reasons to suggest that seepage may be a factor which determines their location in fjords. 3. Photograph of resting Sebastes sp. no, 2007, Lene Buhl-Mortensen, IMR, Bergen).

Their skeletons are formed within their bodies and occur as small pieces of calcium carbonate embedded in a horny substance that can be bent. When these corals die, their remains soon dissolve, in contrast to the skeletons of stony corals. 2. Lophelia pertusa with extended tentacles (clusters of nematocysts can be seen). The polyp to the right has retracted its tentacles, probably because it has managed to get hold of prey. This fragment of a colony was sampled from a coral reef on the Sula Ridge in 1998 and)was kept alive in the aquarium, Bergen, Norway for about 3 years (photo courtesy of P.

Fjordicum) from fjords near Bergen (Norway) and (Siboglinum poseidoni ) sampled from the Skagerrak. Flu¨gel and Langhof (1983) worked on specimens dredged from a depth of 294 m in the southern Skagerrak. , 1981). Stable Sec. , 1981). After new sampling of Siboglinum poseidoni from the central Skagerrak, Schmaljohann and Flu¨gel (1987) and Schmaljohann et al. (1990) performed various culture experiments on the pogonophorans and on their endosymbionts. They managed to keep the animals alive for up to 3 months in seawater under an atmosphere of air : methane (4 : 1), confirming that S.

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