5 Messinian Salinity Crisis: What Happened to Cold-Water Corals?

Freiwald, André

doi:10.1007/978-3-319-91608-8_5

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…Mauritania is a major upwelling region with a post-glacial oceanography less appropriate for reef-forming scleractinian development, in comparison with the oceanography during glacial times, or at the current northern latitudes [29,64].…”

Section: Discussionmentioning

confidence: 99%

The Mauritanian Slope (NE Atlantic) Has No Desert:Swiftia phaeton(Holaxonia: Plexauridae) Shaping Coral Gardens

Sampaio¹,

Beuck²,

Menezes³

et al. 2023

Corals - Habitat Formers in the Anthropocene

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Swiftia Duchassaing & Michelotti, 1864, is often found sparse in the NE Atlantic Ocean and Mediterranean Sea. When the cruise MSM 16/3 “PHAETON” filmed the upper bathyal off Mauritania in 2010, the first dense populations dominated by Swiftia were discovered in the NE Atlantic Ocean, co-occurring with the framework-forming scleractinians Desmophyllum pertusum (Linnaeus, 1758) and Madrepora oculata Linnaeus, 1758. Remotely operated vehicle (ROV) video annotation from two canyons and two coral mounds considered Swiftia phaeton Sampaio, Beuck & Freiwald, 2022 presence, size class and abundance as well as substrate and geomorphology of the seafloor. Coral gardens definition included abundance and size of the species. Dense and very dense mono- and multispecific coral gardens dominated by S. phaeton were mapped between 20°24′N and 17°54′N in 470–640 m depth. The resilience of these coral gardens off Mauritania is mainly linked to the presence of hard substrate available to settle and to the exposition of currents rich in food. Still, these ecosystems are located inside a hydrocarbon exploration area off Mauritania and where fisheries occur since the 1960s. Sedimentation plumes caused by both activities can travel and impact on settlement, development, and survival of these populations. Hence, these vulnerable “oases” should be protected.

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Section: Discussionmentioning

confidence: 99%

The Mauritanian Slope (NE Atlantic) Has No Desert:Swiftia phaeton(Holaxonia: Plexauridae) Shaping Coral Gardens

Sampaio¹,

Beuck²,

Menezes³

et al. 2023

Corals - Habitat Formers in the Anthropocene

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“…2), with mostly sediment cover at the mound foot, coral rubble at the lower flank, dead-coral frameworks on the higher flank, and living corals at the summit (e.g. Cathalot et al, 2015;Davies et al, 2009;Genin et al, 1986;De Clippele et al, 2021;Vertino et al, 2014;Freiwald and Roberts, 2005;Dorschel et al, 2005). van der found self-organized regular patterns in reef cover on the Logachev cold-water coral mounds, with overall reef cover varying along the transects.…”

Section: Coral Mound Ecosystem Engineering Causes Self-organized Reef...mentioning

confidence: 99%

Building your own mountain: the effects, limits, and drawbacks of cold-water coral ecosystem engineering

van der Kaaden,

Maier,

Chen

et al. 2024

Biogeosciences

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Abstract. Framework-forming cold-water corals (CWCs) are ecosystem engineers that build mounds in the deep sea that can be up to several hundred metres high. The effect of the presence of cold-water coral mounds on their surroundings is typically difficult to separate from environmental factors that are not affected by the mounds. We investigated the environmental control on and the importance of ecosystem engineering for cold-water coral reefs using annotated video transect data, spatial variables (MEMs), and hydrodynamic model outputs in a redundancy analysis and with variance partitioning. Using available hydrodynamic simulations with cold-water coral mounds and simulations where the mounds were artificially removed, we investigated the effect of coral mound ecosystem engineering on the spatial configuration of reef habitat and discriminated which environmental factors are and which are not affected by the mounds. We find that downward velocities in winter, related to non-engineered environmental factors, e.g. deep winter mixing and dense-water cascading, cause substantial differences in reef cover at the broadest spatial scale (20–30 km). Such hydrodynamic processes that stimulate the food supply towards the corals in winter seem more important for the reefs than cold-water coral mound engineering or similar hydrodynamic processes in summer. While the ecosystem-engineering effect of cold-water corals is frequently discussed, our results also highlight the importance of non-engineered environmental processes. We further find that, due to the interaction between the coral mound and the water flow, different hydrodynamic zones are found on coral mounds that likely determine the typical benthic zonations of coral rubble at the mound foot, the dead coral framework on the mound flanks, and the living corals near the summit. Moreover, we suggest that a so-called Massenerhebung effect (well known for terrestrial mountains) exists, meaning that benthic zonation depends on the location of the mound rather than on the height above the seafloor or water depth. Our finding that ecosystem engineering determines the configuration of benthic habitats on cold-water coral mounds implies that cold-water corals cannot grow at deeper depths on the mounds to avoid the adverse effects of climate change.

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Bryozoan faunas at the Tortonian-Messinian transition. A palaeoenvironmental case study from Crete Island, eastern Mediterranean

et al. 2021

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Geodiversitas est indexé dans / Geodiversitas is indexed in:-Science Citation Index Expanded (SciSearch ® ) -ISI Alerting Services ® -Current Contents ® / Physical, Chemical, and Earth Sciences® -Scopus ® Geodiversitas est distribué en version électronique par / Geodiversitas is distributed electronically by: -BioOne ® (http://www.bioone.org)Les articles ainsi que les nouveautés nomenclaturales publiés dans Geodiversitas sont référencés par / Articles and nomenclatural novelties published in Geodiversitas are referenced by: -ZooBank ® (http://zoobank.org)

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5 Messinian Salinity Crisis: What Happened to Cold-Water Corals?

Cited by 3 publications

References 23 publications

The Mauritanian Slope (NE Atlantic) Has No Desert:Swiftia phaeton(Holaxonia: Plexauridae) Shaping Coral Gardens

The Mauritanian Slope (NE Atlantic) Has No Desert:Swiftia phaeton(Holaxonia: Plexauridae) Shaping Coral Gardens

Building your own mountain: the effects, limits, and drawbacks of cold-water coral ecosystem engineering

Bryozoan faunas at the Tortonian-Messinian transition. A palaeoenvironmental case study from Crete Island, eastern Mediterranean

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