Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast Atlantic

The CTD data used for model validation are available at the IEO marine geospatial information Walvis Ridge viewer open repository (https://www.ieo.es/es/ideo). The benthos data from the Spanish-Namibian surveys are available from the Ocean Biodiversity Information System (OBIS) at https://www.gbif.o...

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Autores: Mohn, Christian, Schwarzkopf, Franziska U., García, Patricia Jiménez, Orejas, Covadonga, Huvenne, Veerle A.I., Schumacher, Mia, Pérez-Rodríguez, Irene, Sarralde-Vizuete, Roberto, López-Abellán, Luis J., Dale, Andrew C., Devey, Colin, Hansen, Jørgen L.S., Møller, Eva Friis, Biastoch, Arne
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/392573
Acceso en línea:http://hdl.handle.net/10261/392573
https://api.elsevier.com/content/abstract/scopus_id/85214430941
Access Level:acceso abierto
Palabra clave:Cold-water corals
Near-bottom currents
Seamounts
Sponges
Tidal dynamics
Walvis Ridge
id ES_0ba961ff476a13252c8277bcdf2ca6dd
oai_identifier_str oai:digital.csic.es:10261/392573
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast Atlantic
title Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast Atlantic
spellingShingle Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast Atlantic
Mohn, Christian
Cold-water corals
Near-bottom currents
Seamounts
Sponges
Tidal dynamics
Walvis Ridge
title_short Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast Atlantic
title_full Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast Atlantic
title_fullStr Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast Atlantic
title_full_unstemmed Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast Atlantic
title_sort Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast Atlantic
dc.creator.none.fl_str_mv Mohn, Christian
Schwarzkopf, Franziska U.
García, Patricia Jiménez
Orejas, Covadonga
Huvenne, Veerle A.I.
Schumacher, Mia
Pérez-Rodríguez, Irene
Sarralde-Vizuete, Roberto
López-Abellán, Luis J.
Dale, Andrew C.
Devey, Colin
Hansen, Jørgen L.S.
Møller, Eva Friis
Biastoch, Arne
author Mohn, Christian
author_facet Mohn, Christian
Schwarzkopf, Franziska U.
García, Patricia Jiménez
Orejas, Covadonga
Huvenne, Veerle A.I.
Schumacher, Mia
Pérez-Rodríguez, Irene
Sarralde-Vizuete, Roberto
López-Abellán, Luis J.
Dale, Andrew C.
Devey, Colin
Hansen, Jørgen L.S.
Møller, Eva Friis
Biastoch, Arne
author_role author
author2 Schwarzkopf, Franziska U.
García, Patricia Jiménez
Orejas, Covadonga
Huvenne, Veerle A.I.
Schumacher, Mia
Pérez-Rodríguez, Irene
Sarralde-Vizuete, Roberto
López-Abellán, Luis J.
Dale, Andrew C.
Devey, Colin
Hansen, Jørgen L.S.
Møller, Eva Friis
Biastoch, Arne
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Mohn, Christian [0000-0002-4331-1365]
Schwarzkopf, Franziska U. [0000-0002-2747-8456]
Pérez-Rodríguez, Irene [0000-0002-4743-0038]
López-Abellán, Luis J. [0000-0002-2250-6913]
Dale, Andrew C. [0000-0002-9256-7770]
Devey, Colin [0000-0002-0930-7274]
Møller, Eva Friis [0000-0002-7640-3514]
Biastoch, Arne [0000-0003-3946-4390]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Cold-water corals
Near-bottom currents
Seamounts
Sponges
Tidal dynamics
Walvis Ridge
topic Cold-water corals
Near-bottom currents
Seamounts
Sponges
Tidal dynamics
Walvis Ridge
description The CTD data used for model validation are available at the IEO marine geospatial information Walvis Ridge viewer open repository (https://www.ieo.es/es/ideo). The benthos data from the Spanish-Namibian surveys are available from the Ocean Biodiversity Information System (OBIS) at https://www.gbif.org/dataset/c3fa13f7-14bd-4f14-9bd5-4f959860f63b. The ROMS-AGRIF model used in this study is now frozen and replaced by the CROCO project (https://www.croco-ocean.org/history/). The CROCO model includes all the functionalities of ROMS_AGRIF and added additional features (e.g., non-hydrostatic kernel). The tidal forcing data (OTIS-TPXO) and atmospheric forcing data (COADS) can be downloaded from https://www.croco-ocean.org/download/.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/392573
https://api.elsevier.com/content/abstract/scopus_id/85214430941
url http://hdl.handle.net/10261/392573
https://api.elsevier.com/content/abstract/scopus_id/85214430941
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Canarias, (COC)
Centro Oceanográfico de Vigo, (COV)
Centro Oceanográfico de Gijón, (COG)
López-Abellán, Luis J.; Sarralde-Vizuete, Roberto; González Jiménez, J. F.; Centro Oceanográfico de Canarias – IEO, Spain; 2015; Dataset of the multidisciplinary research surveys in the seamounts of Ewing and Valdivia Bank (Walvis Ridge)-SE Atlantic [Dataset]; https://dx.doi.org/10.14284/58
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1029/2024JC021667
https://doi.org/10.1029/2024JC021667
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
John Wiley & Sons
publisher.none.fl_str_mv American Geophysical Union
John Wiley & Sons
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Dynamics of Near-Bottom Currents in Cold-Water Coral and Sponge Areas at Valdivia Bank and Ewing Seamount, Southeast AtlanticMohn, ChristianSchwarzkopf, Franziska U.García, Patricia JiménezOrejas, CovadongaHuvenne, Veerle A.I.Schumacher, MiaPérez-Rodríguez, IreneSarralde-Vizuete, RobertoLópez-Abellán, Luis J.Dale, Andrew C.Devey, ColinHansen, Jørgen L.S.Møller, Eva FriisBiastoch, ArneCold-water coralsNear-bottom currentsSeamountsSpongesTidal dynamicsWalvis RidgeThe CTD data used for model validation are available at the IEO marine geospatial information Walvis Ridge viewer open repository (https://www.ieo.es/es/ideo). The benthos data from the Spanish-Namibian surveys are available from the Ocean Biodiversity Information System (OBIS) at https://www.gbif.org/dataset/c3fa13f7-14bd-4f14-9bd5-4f959860f63b. The ROMS-AGRIF model used in this study is now frozen and replaced by the CROCO project (https://www.croco-ocean.org/history/). The CROCO model includes all the functionalities of ROMS_AGRIF and added additional features (e.g., non-hydrostatic kernel). The tidal forcing data (OTIS-TPXO) and atmospheric forcing data (COADS) can be downloaded from https://www.croco-ocean.org/download/.This study investigates near-bottom currents and physical processes from simulations with the hydrodynamic model ROMS-AGRIF at two seamounts of the northeast Walvis Ridge to obtain valuable insights about drivers of observed occurrences of benthic suspension feeders (cnidarians and sponges) in this data-poor area. The spatial resolution in each model area was increased across two levels of nested grids from 1,500 m to 500 m resolution with 32 stretched terrain-following (s-) layers in the vertical with high resolution close to the bottom. The parent grids receive initial and boundary conditions from the basin-scale model INALT20 and from solutions of the OTIS inverse tidal model. The model topography is based on GEBCO data with local refinements from multi-beam data collected during different surveys in 2008, 2009, and 2010. Increasing model resolution is an important advancement for precisely evaluating the intrinsic dynamics within challenging rough terrain. We examined how near-bottom currents vary over space and time and investigated potential links between observed Cnidarian and Porifera occurrences and ranges of physical variables and processes. We identified a close link between physical processes and species distributions and suggested that physical processes such as kinetic energy dissipation and internal wave dynamics may be considered in future research as proxies of food supply to benthic suspension feeders. Such mechanistic variables may also be used to supplement more traditional descriptors such as water mass and terrain properties in species distribution models, thus enhancing our ability to predict the occurrence of benthic communities characterized by cnidarians and sponges.This study has received funding from the European Union's Horizon 2020 Research and Innovation Programme under grant agreement no. 818123 (iAtlantic). The results of this study reflect only the author's view, and the European Union cannot be held responsible for any use that may be made of the information contained therein. This publication has been supported by the COST ACTION Marine Animal Forests of the World (MAF-WORLD), CA20102, supported by COST (European Cooperation in Science and Technology). CM, VAIH, and CO acknowledge cofunding of this work through a Fellowship at the Hanse-Wissenschaftskolleg Institute for Advanced Study, Delmenhorst, Germany. CM acknowledges additional support by the Aarhus University Research Foundation through the AUFF NOVA programme (contract no. AUFF-E−2021-9-33) for the project ‘Motion and commotion at Great Meteor Seamount’. The authors are grateful for the very helpful comments and suggestions on the manuscript provided by Dr. Lisa Skein (National Oceanography Centre, UK) and two anonymous reviewers.Peer reviewedAmerican Geophysical UnionJohn Wiley & SonsMohn, Christian [0000-0002-4331-1365]Schwarzkopf, Franziska U. [0000-0002-2747-8456]Pérez-Rodríguez, Irene [0000-0002-4743-0038]López-Abellán, Luis J. [0000-0002-2250-6913]Dale, Andrew C. [0000-0002-9256-7770]Devey, Colin [0000-0002-0930-7274]Møller, Eva Friis [0000-0002-7640-3514]Biastoch, Arne [0000-0003-3946-4390]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/392573https://api.elsevier.com/content/abstract/scopus_id/85214430941reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Canarias, (COC)Centro Oceanográfico de Vigo, (COV)Centro Oceanográfico de Gijón, (COG)López-Abellán, Luis J.; Sarralde-Vizuete, Roberto; González Jiménez, J. F.; Centro Oceanográfico de Canarias – IEO, Spain; 2015; Dataset of the multidisciplinary research surveys in the seamounts of Ewing and Valdivia Bank (Walvis Ridge)-SE Atlantic [Dataset]; https://dx.doi.org/10.14284/58The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1029/2024JC021667https://doi.org/10.1029/2024JC021667Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3925732026-05-22T06:33:51Z
score 15,81155

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