Geochemical and physical constraints for the occurrence of living cold-water corals.

Flögel, Sascha, Dullo, Wolf-Christian , Pfannkuche, Olaf, Kiriakoulakis, K. and Rüggeberg, Andres (2014) Geochemical and physical constraints for the occurrence of living cold-water corals. Deep-Sea Research Part II-Topical Studies in Oceanography, 99 . pp. 16-26. DOI 10.1016/j.dsr2.2013.06.006.

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Abstract

Cold-water coral communities cover a wide range of possible habitats in terms of latitude, ocean basins, and depth, with ongoing studies continually expanding occurrences in various regions of the global ocean. A range of factors determines the formation of cold-water coral reefs, such as physical, hydrochemical, and biological (e.g. food supply) factors. Recently, more and more modeling studies have emerged using a variety of mathematical approaches have emerged including environmental niche factor analysis (ENFA) and predictive habitat suitability models. However, only few studies have attempted to characterize the underlying suite of hydro-biogeochemical and physical constraints of cold-water coral reefs and to differentiate between pristine reef growth vs. sites with reduced or no coral occurrences. This study concentrates on new data and a compilation of existing data sets on the physical and chemical properties in the NE Atlantic and the Mediterranean. It explores the influence of ambient bottom waters and its characteristics on living cold-water reefs and mounds formed by Lophelia pertusa. Several questions are addressed: (1) what are the physical and geochemical boundary conditions of living cold-water corals? (2) Do these geochemical parameters correlate with proposed physical prerequisites? (3) Is there a general difference in the signature of living and dead coral sites?

Document Type: Article
Additional Information: WOS:000332194500003
Keywords: Cold-water corals; Boundary conditions; Biogeochemistry; DIC; M61/1; M61/3; M84/5; POS316; POS325; POS346; POS434; POS438; MSM01/3; MSM16/3; AL232; POSEIDON; ALKOR; Meteor; Maria S. Merian, ROV PHOCA
Research affiliation: OceanRep > SFB 754 > A7
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
OceanRep > SFB 754
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/j.dsr2.2013.06.006
ISSN: 0967-0645
Expeditions/Models/Experiments:
Date Deposited: 22 Oct 2013 12:39
Last Modified: 06 Sep 2017 12:21
URI: http://oceanrep.geomar.de/id/eprint/22197

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