{"refrec":{"BRefID":322746,"RR":"<b>Raddatz, J.; Titschack, J.; Frank, N.; Freiwald, A.; Conforti, A.; Osborne, A.; Skornitzke, S.; Stiller, W.; Rüggeberg, A.; Voigt, S.; Albuquerque, A.L.S.; Vertino, A.; Schröder-Ritzrau, A.; Bahr, A.</b> (2020). <i>Solenosmilia variabilis</i>-bearing cold-water coral mounds off Brazil. <i>Coral Reefs 39(1)</i>: 69-83. <a href=\"https://dx.doi.org/10.1007/s00338-019-01882-w\" target=\"_blank\">https://dx.doi.org/10.1007/s00338-019-01882-w</a>","BEntID":316217,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Coral Reefs 39(1)</i>: 69-83. <a href=\"https://dx.doi.org/10.1007/s00338-019-01882-w\" target=\"_blank\">https://dx.doi.org/10.1007/s00338-019-01882-w</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Raddatz, J.; Titschack, J.; Frank, N.; Freiwald, A.; Conforti, A.; Osborne, A.; Skornitzke, S.; Stiller, W.; Rüggeberg, A.; Voigt, S.; Albuquerque, A.L.S.; Vertino, A.; Schröder-Ritzrau, A.; Bahr, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Raddatz, J. <i>et al.</i>","Englishabstract":"Cold-water corals (CWC), dominantly <i>Desmophyllum pertusum</i> (previously <i>Lophelia pertusa</i>), and their mounds have been in the focus of marine research during the last two decades; however, little is known about the mound-forming capacity of other CWC species. Here, we present new <sup>230</sup>Th/U age constraints of the relatively rarely studied framework-building CWC <i>Solenosmilia variabilis</i> from a mound structure off the Brazilian margin combined with computed tomography (CT) acquisition. Our results show that <i>S. variabilis</i> can also contribute to mound formation, but reveal coral-free intervals of hemipelagic sediment deposits, which is in contrast to most of the previously studied CWC mound structures. We demonstrate that <i>S. variabilis</i> only occurs in short episodes of &lt; 4 kyr characterized by a coral content of up to 31&nbsp;vol%. In particular, it is possible to identify distinct clusters of enhanced aggradation rates (AR) between 54 and 80&nbsp;cm&nbsp;ka<sup>−1</sup>. The determined AR are close to the maximal growth rates of individual <i>S. variabilis</i> specimens, but are still up to one order of magnitude smaller than the AR of <i>D. pertusum</i> mounds. Periods of enhanced <i>S. variabilis</i> AR predominantly fall into glacial periods and glacial terminations that were characterized by a 60–90&nbsp;m lower sea level. The formation of nearby <i>D. pertusum</i> mounds is also associated with the last glacial termination. We suggest that the short-term periods of coral growth and mound formation benefited from enhanced organic matter supply, either from the adjacent exposed shelf and coast and/or from enhanced sea-surface productivity. This organic matter became concentrated on a deeper water-mass boundary between South Atlantic Central Water and the Antarctic Intermediate Water and may have been distributed by a stronger hydrodynamic regime. Finally, periods of enhanced coral mound formation can also be linked to advection of nutrient-rich intermediate water masses that in turn might have (directly or indirectly) further facilitated coral growth and mound formation.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"<i>Solenosmilia variabilis</i>-bearing cold-water coral mounds off Brazil","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:01.897972","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Cold-water corals; South Atlantic; Th-230; U; Computed tomography","OtherDescriptors":null,"Notes":null,"AnaPub":2020,"MonPub":null,"DateUpdate":"2020-04-14","DateCreate":"2020-04-07","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000511947300010","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s00338-019-01882-w"},"refs":null,"anarec":{"AnaID":322746,"PubliDate":2020,"Pagination":"69-83","XtraPublOfAnaID":null,"ISBN":null,"Volume":"39","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45580,"SerRR":"Coral Reefs. 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