By Martin Hovland
Because of extensive ocean backside surveys, normally for the aim of constructing oil and fuel assets, scientists understand that deep-water corals shape broad reefs and vast carbonate mounds within the chilly waters of the entire significant oceans.This e-book, written by means of Hovland (Statoil, Norway), a marine geology professional, is of substantial curiosity as a result of its many coloured images and drawings that illustrate the destinations and natural range of the reefs and piles. these within the different world-wide oceans seem to be comparable. The textual content is definitely written and the writer attracts cognizance to the necessity for conservation, basically to guard the reefs from harm by means of deep-water trawling. beneficial as supplemental examining for sessions on marine biology.Summing Up: hugely advised. educational collections, upper-level undergraduates, graduate scholars, researchers, and school.
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Extra resources for Deep-Water Coral Reefs: Unique Biodiversity Hot-Spots
20 A modern re-discovery [Ch. 6. This is a sidescan sonar record from the sedimentary basin, located upstream relative to the Fugløy reef. There is a regular pattern of pockmarks here. The pockmarks are formed by focused ﬂuid ﬂow through the seaﬂoor sediments. The empty space in the middle of the record is the water column to each side and beneath the towed sidescan sonar ﬁsh. Note that some of the pockmarks have strong acoustic reﬂections (probably from stones) in their centres. 7). They are the surface manifestation of dewatering, as if groundwater on land came to the surface in puddles (King and MacLean, 1970; Judd and Hovland, 2007).
14 A modern re-discovery [Ch. 1. A sketch made in 1990, after the ﬁrst reef had been documented by ROVs oﬀ midNorway (M. Hovland). Subsequent studies have shown that the ratio between live corals and dead is normally much less than illustrated here. For scale, a typical ROV is a couple of metres long. 2 HISTORICAL BACKGROUND During the last glacial maximum (LGM), around 18,000 years before present (ybp), most of Norway and parts of the rest of Scandinavia were covered by up to 3,000 metres of ice and snow.
The chapter ends with a review of both modern and nascent stromatolitic, possibly seep-related structures (such as in Pavillion Lake, Canada) and also the truly seep-related microbialites, like those found in Lake Van, Turkey. 2 percent of this area contains one quarter of all marine species. The corals, to say it melodramatically, represent the soul of the ocean, and the ocean is the mother of all life. 1 INTRODUCTION Norwegian and North Atlantic coral reefs are not only spectacular, but also very paradoxical, the former, because of their size (house-sized, up to hundreds of metres long, tens of metres tall), their numbers (thousands), and their proliﬁc associated fauna (up to several hundred macro-faunal species per reef ).