Acoustic micronektonic distribution is structured by macroscale oceanographic processes across 20–50°S latitudes in the South-Western Indian Ocean

Autor: Nolwenn Behagle, Gildas Roudaut, Tim E. Ryan, Patrice Brehmer, Yves Cherel, Erwan Josse, Cédric Cotté, Olivier Gauthier

Publikováno v: Deep Sea Research Part I: Oceanographic Research Papers
Deep Sea Research Part I: Oceanographic Research Papers, Elsevier, 2016, 113, pp.20-32. ⟨10.1016/j.dsr.2015.12.007⟩
Deep Sea Research Part I: Oceanographic Research Papers, 2016, 110, pp.20-32. ⟨10.1016/j.dsr.2015.12.007⟩
Deep Sea Research Part I: Oceanographic Research Papers, Elsevier, 2016, 110, pp.20-32. ⟨10.1016/j.dsr.2015.12.007⟩

International audience; Micronekton constitutes the largest unexploited marine biomass worldwide. It is one of the most conspicuous and ecologically important components of the still poorly known mesopelagic ecosystem. Acoustic data were collected fr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05f1c0ba83c58c993ce2a4df63dae332
https://doi.org/10.1016/j.dsr.2015.12.007

The Mozambique channel : mesoscale dynamics and ecosystem responses

Autor: J. A. Huggett, Hans M. Verheye, S. Ockhuis, Gildas Roudaut, Anne Lebourges-Dhaussy, Erwan Josse

Publikováno v: Deep Sea Research Part II: Topical Studies in Oceanography
Deep Sea Research Part II: Topical Studies in Oceanography, Elsevier, 2014, 100, pp.136--152. ⟨10.1016/j.dsr2.2013.10.022⟩

International audience; Two surveys were conducted in the Mozambique Channel in November 2009 and April/May 2010 to study the influence of mesoscale eddies on the zooplanktonic component of the ecosystem. Three complementary methods were used to samp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03858538cb7c861a56dc0387a8759198
https://doi.org/10.1016/j.dsr2.2013.10.022

Convergence and divergence between two multibeam sonars (SIMRAD SM20 and RESON SeaBat 6012) used to extract the spatial, morphologic and energy parameters of fish schools

Autor: Jean Guillard, Y. Perrot, Erwan Josse

Publikováno v: Fisheries Research
Fisheries Research, Elsevier, 2010, 106 (3), pp.378-385. ⟨10.1016/j.fishres.2010.09.007⟩

International audience; n situ three-dimensional (3D) fish school descriptors were compared using two multibeam sonars, a Simrad SM20 200-kHz and a Reson SeaBat 6012 455-kHz, deployed together in a lake to observe same fish schools simultaneously. Sc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f2e368dd68ed0bde4515227c2af42b2
https://doi.org/10.1016/j.fishres.2010.09.007

Adaptation of fisheries sonar for monitoring schools of large pelagic fish: dependence of schooling behaviour on fish finding efficiency

Autor: Vasilis Trygonis, John Dalen, Stratis Georgakarakos, Erwan Josse, Patrice Brehmer

Publikováno v: Aquatic Living Resources
Aquatic Living Resources, EDP Sciences, 2007, 20 (4), pp.377-384. ⟨10.1051/alr:2008016⟩

International audience; Multibeam omnidirectional sonars are tools currently used by fishers, but also allow the monitoring of pelagic fish schools surrounding a platform. Multibeam processing methods now offer improved capacities for raw data storag

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f497358c23449fca4a33ab99fb9a9ed
https://doi.org/10.1051/alr:2008016

IEEE/OES Acoustics in Underwater Geosciences Symposium (RIO Acoustics)

Autor: Olivier Gauthier, Guy Duhamel, Gildas Roudaut, Yves Cherel, Patrice Brehmer, Tim Rayan, Erwan Josse, Cédric Cotté, Nolwenn Behagle

In this work scientific echosounder were used hull mounted onboard R/V Marion Dufresne II to scrutinize the vertical distribution of micronekton according to water masses characteristics along transect which were discriminated with spatial remote sen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::361d12f0d0ba8e08f2d13f40a252f64e
http://www.documentation.ird.fr/hor/fdi:010067521