{"refrec":{"BRefID":325645,"RR":"<b>Riehl, T.; Wölfl, A.-C.; Augustin, N.; Devey, C.W.; Brandt, A.</b> (2020). Discovery of widely available abyssal rock patches reveals overlooked habitat type and prompts rethinking deep-sea biodiversity. <i>Proc. Natl. Acad. Sci. U.S.A. 117(27)</i>: 15450-15459. <a href=\"https://dx.doi.org/10.1073/pnas.1920706117\" target=\"_blank\">https://dx.doi.org/10.1073/pnas.1920706117</a>","BEntID":319122,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Proc. Natl. Acad. Sci. U.S.A. 117(27)</i>: 15450-15459. <a href=\"https://dx.doi.org/10.1073/pnas.1920706117\" target=\"_blank\">https://dx.doi.org/10.1073/pnas.1920706117</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Riehl, T.; Wölfl, A.-C.; Augustin, N.; Devey, C.W.; Brandt, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Riehl, T. <i>et al.</i>","Englishabstract":"Habitat heterogeneity and species diversity are often linked. On the deep seafloor, sediment variability and hard-substrate availability influence geographic patterns of species richness and turnover. The assumption of a generally homogeneous, sedimented abyssal seafloor is at odds with the fact that the faunal diversity in some abyssal regions exceeds that of shallow-water environments. Here we show, using a ground-truthed analysis of multibeam sonar data, that the deep seafloor may be much rockier than previously assumed. A combination of bathymetry data, ruggedness, and backscatter from a trans-Atlantic corridor along the Vema Fracture Zone, covering crustal ages from 0 to 100 Ma, show rock exposures occurring at all crustal ages. Extrapolating to the whole Atlantic, over 260,000 km<sup>2</sup> of rock habitats potentially occur along Atlantic fracture zones alone, significantly increasing our knowledge about abyssal habitat heterogeneity. 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