Publications des scientifiques de l'IRD

Bertrand Arnaud, Grados D., Colas François, Bertrand Sophie, Capet X., Chaigneau Alexis, Vargas G., Mousseigne A., Fablet R. (2014). Broad impacts of fine-scale dynamics on seascape structure from zooplankton to seabirds. Nature Communications, 5, 5239 [9 p.]. ISSN 2041-1723.

Titre du document
Broad impacts of fine-scale dynamics on seascape structure from zooplankton to seabirds
Année de publication
2014
Type de document
Article référencé dans le Web of Science WOS:000343984100001
Auteurs
Bertrand Arnaud, Grados D., Colas François, Bertrand Sophie, Capet X., Chaigneau Alexis, Vargas G., Mousseigne A., Fablet R.
Source
Nature Communications, 2014, 5, 5239 [9 p.] ISSN 2041-1723
In marine ecosystems, like most natural systems, patchiness is the rule. A characteristic of pelagic ecosystems is that their 'substrate' consists of constantly moving water masses, where ocean surface turbulence creates ephemeral oases. Identifying where and when hot-spots occur and how predators manage those vagaries in their preyscape is challenging because wide-ranging observations are lacking. Here we use a unique data set, gathering high-resolution and wide-range acoustic and GPS-tracking data. We show that the upper ocean dynamics at scales less than 10 km play the foremost role in shaping the seascape from zooplankton to seabirds. Short internal waves (100 m(-1) km) play a major role, while submesoscale (similar to 1-20 km) and mesoscale (similar to 20-100 km) turbulence have a comparatively modest effect. Predicted changes in surface stratification due to global change are expected to have an impact on the number and intensity of physical structures and thus biological interactions from plankton to top predators.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Ecologie, systèmes aquatiques [036]
Description Géographique
PEROU ; PACIFIQUE
Localisation
Fonds IRD [F B010063633]
Identifiant IRD
fdi:010063633
Contact