Document of dataset 4076

Dataset record

Type

Dataset

DOI

https://www.doi.org/10.14284/58

title in English

Dataset of the multidisciplinary research surveys in the seamounts of Ewing and Valdivia Bank (Walvis Ridge) - SE Atlantic

Description in English

The three multidisciplinary research surveys on board the R/V Vizconde de Eza (Secretaría General de Pesca Marítima) were performed in the seamounts of Ewing and Valdivia Bank (Walvis Ridge) as a collaborative work between Spain and Namibia trough the Instituto Español de Oceanografía (IEO) and the National Marine Information and Research Centre of Swakopmund (NatMIRC). Studies on biodiversity, acoustic and geophysics, hydrography, and seabird and cetacean observations were conducted. A total of 15 823 km² were surveyed with a multibeam echosounder and 1462 km of seismic profiles, using an ultra-high resolution parametric sounder. The depth ranged between 218 m at the outcrop in the South-eastern sector of Valdivia Bank and 3000 m in the southern part of our study. A total of 210 species of fish, 60 crustaceans and 32 cephalopods were recorded. Species diversity increased by depth and four assemblages by depth strata were found: shallower (200-300 m); slope (300 - 800 m); upper deep (800 - 1300 m); and deep (1300 - 2000 m).

Abstract in English

The dataset is the result of the sampling conducted between 2008 and 2010 on the R/V Vizconde de Eza.

License

https://spdx.org/licenses/CC-BY-ND-4.0.html

bibliographicCitation

López-Abellán, L. J.; Sarralde Vizuete, R.; 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

Release date

Mar 29 2013 12:00AM