The Interactive Role of Hydrocarbon Seeps, Hydrothermal Vents and Intermediate Antarctic/Mediterranean Water Masses on the Distribution of Some Vulnerable Deep-Sea Habitats in Mid Latitude NE Atlantic Ocean

  1. Somoza, Luis
  2. Rueda, José L.
  3. Sánchez-Guillamón, Olga
  4. Medialdea, Teresa
  5. Rincón-Tomás, Blanca
  6. González, Francisco J.
  7. Palomino, Desirée
  8. Madureira, Pedro
  9. López-Pamo, Enrique
  10. Fernández-Salas, Luis M.
  11. Santofimia, Esther
  12. León, Ricardo
  13. Marino, Egidio
  14. Fernández-Puga, María del Carmen
  15. Vázquez, Juan T.
Revista:
Oceans

ISSN: 2673-1924

Año de publicación: 2021

Volumen: 2

Número: 2

Páginas: 351-385

Tipo: Artículo

DOI: 10.3390/OCEANS2020021 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Oceans

Resumen

In this work, we integrate five case studies harboring vulnerable deep-sea benthic habitatsin different geological settings from mid latitude NE Atlantic Ocean (24–42◦ N). Data and images ofspecific deep-sea habitats were acquired with Remoted Operated Vehicle (ROV) sensors (temperature,salinity, potential density, O2, CO2, and CH4). Besides documenting some key vulnerable deep-seahabitats, this study shows that the distribution of some deep-sea coral aggregations (including scler-actinians, gorgonians, and antipatharians), deep-sea sponge aggregations and other deep-sea habitatsare influenced by water masses’ properties. Our data support that the distribution of scleractinianreefs and aggregations of other deep-sea corals, from subtropical to north Atlantic could be dependentof the latitudinal extents of the Antarctic Intermediate Waters (AAIW) and the Mediterranean Out-flow Waters (MOW). Otherwise, the distribution of some vulnerable deep-sea habitats is influenced,at the local scale, by active hydrocarbon seeps (Gulf of Cádiz) and hydrothermal vents (El Hierro,Canary Island). The co-occurrence of deep-sea corals and chemosynthesis-based communities hasbeen identified in methane seeps of the Gulf of Cádiz. Extensive beds of living deep-sea mussels(Bathymodiolus mauritanicus) and other chemosymbiotic bivalves occur closely to deep-sea coralaggregations (e.g., gorgonians, black corals) that colonize methane-derived authigenic carbonates.

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