Data/hora: 10/06/2024 03:37:37

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Heureuse surprise ! Évidence photographique de la présence d’un cadavre d’animal nectonique de taille moyenne sur le plancher océanique
Autores: | Soltwedel, T; Von Juterzenka, K; Premke, K; Klages, M.
Data: | 2003-11
Ano: | 2003
Palavras-chave: | Chute; Carcasses; Océan profond; Imagerie; Nécrophage; Food-falls; Carcasses; Deep-sea; Imagery; Scavengers.
Resumo: | Although the use of deep-sea imagery considerably increased during the last decades, reports on nekton falls to the deep seafloor are very scarce. Whereas there are a few reports describing the finding of whale carcasses in the deep north-eastern and south-eastern Pacific, descriptions of invertebrate or vertebrate food-falls at centimetre to metre scale are extremely rare. After 4 years of extensive work at a deep-sea long-term station in northern polar regions (AWI-"Hausgarten"), including large-scale visual observations with various camera systems covering some 10 000 m(2) of seafloor at water depths between 1250 and 5600 m, this paper describes the first observation of a fish carcass at about 1280 m water depth, west off Svalbard. The fish skeleton had a total length of 36 cm and an approximated biomass of 0.5 kg wet weight. On the basis of in situ experiments, we estimated a very short residence time of this particular carcass of about 7 h at the bottom. The fast response of the motile deep-sea scavenger community to such events and the rapid utilisation of this kind of organic carbon supply might partly explain the extreme rarity of such an observation.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00321/43253/42984.pdf

DOI:10.1016/S0399-1784(03)00060-4

http://archimer.ifremer.fr/doc/00321/43253/

Editor: | Gauthier-villars/editions Elsevier
Formato: | application/pdf
Fonte: | Oceanologica Acta (0399-1784) (Gauthier-villars/editions Elsevier), 2003-11 , Vol. 26 , N. 5-6 , P. 623-628

Fonte:

2003 Éditions scientifiques et médicales Elsevier SAS and Ifremer/CNRS/IRD. All rights reserved.

info:eu-repo/semantics/openAccess

restricted use