Montes submarinos en el océano Pacífico suroriental y biodiversidad en el cordón de Juan Fernández, Chile

Translated title of the contribution: Seamounts in the southeastern Pacific Ocean and biodiversity on Juan Fernandez seamounts, Chile

Eleuterio Yáñez, CLAUDIO SILVA GALLINATO, Rodrigo Vega, Fernando Espíndola, Lorena Álvarez, Nelson Silva, Sergio Palma, Sergio Salinas, Eduardo Menschel, Verena Häussermann, Daniela Soto, Nadín Ramírez

Research output: Contribution to journalReview articlepeer-review

21 Scopus citations

Abstract

Seamounts are vulnerable marine ecosystems. In Chile, information on these ecosystems is quite scarce; thus, a compilation of information on their geographical distribution and biodiversity is presented herein. A total of 118 seamounts distributed in the Chilean EEZ are identified and characterized. Additionally, an in situ assessment was carried out on the Juan Fernandez seamounts 1 and 2 (JF1 and JF2), which were also oceanographically characterized. Phytoplankton, zooplankton, and marine invertebrate samples were collected and an exploratory fishing survey was executed using different gears. According to the bibliographical review, a total of 82 species have been collected on the JF1 and JF2 seamounts, highlighting findings of black coral species caught in lobster traps at the Juan Fernandez Archipelago. Submarine images of the marine substrate at JF1 and JF2 reveal characteristics attributable to the impact of bottom dredges, coinciding with the information obtained from the trawling fleet. The fishing activity was carried out primarily at JF2 (4,667 km of trawling). The monthly fishing effort increased considerably in 2002, 2003, and 2005, reaching values above 500 km of trawling and, thus, modifying the spatial structure of the resource aggregates on the JF2 seamount.

Translated title of the contributionSeamounts in the southeastern Pacific Ocean and biodiversity on Juan Fernandez seamounts, Chile
Original languageSpanish
Pages (from-to)555-570
Number of pages16
JournalLatin American Journal of Aquatic Research
Volume37
Issue number3
DOIs
StatePublished - 1 Jan 2009

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