New applications of hydroacoustic methods for monitoring shallow water aquatic ecosystems: the case of mussel culture grounds
| Autor: | François Gerlotto, Yvon Guennegan, Fabien Sanguinede, Dominique Buestel, Joelle Guillard, Patrice Brehmer |
|---|---|
| Přispěvatelé: | Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]) |
| Rok vydání: | 2003 |
| Předmět: |
0106 biological sciences
Monitoring multibeam sonar fish school Artificial reef Context (language use) Aquatic Science Fish school 01 natural sciences Sonar Echo sounding MOULE Aquaculture mussel longline Hydroacoustics Sciences et techniques des pêches Littoral zone 14. Life underwater zone côtière mytilus edulis Ecosystem ComputingMilieux_MISCELLANEOUS Sciences and technics of fishery ecosystem sonar multi faisceaux business.industry 010604 marine biology & hydrobiology Aquatic ecosystem Mussel longline mer méditerranée 04 agricultural and veterinary sciences écosystème aquatique monitoring Oceanography artificial reef [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery 040102 fisheries 0401 agriculture forestry and fisheries Environmental science Multibeam sonar [SDE.BE]Environmental Sciences/Biodiversity and Ecology business |
| Zdroj: | Aquatic Living Resources Aquatic Living Resources, EDP Sciences, 2003, 16 (3), pp.333-338. ⟨10.1016/S0990-7440(03)00042-1⟩ HAL Aquatic Living Resources, EDP Sciences, 2003, 16, pp.333-338 Aquatic Living Resources (16), 333-338. (2003) Aquatic Living Resources (0990-7440) (Elsevier), 2003-07, Vol. 16, N. 3, P. 333-338 |
| ISSN: | 0990-7440 1765-2952 |
| DOI: | 10.1016/s0990-7440(03)00042-1 |
| Popis: | International audience; The development of acoustics tools and methods for monitoring anthropized ecosystems represents a new field for the application of acoustics. Monitoring such an environment was not possible with single vertical echo sounders, due to the fact that the artificial structures and the natural targets were not distinguishable. Monitoring data were collected along the French Mediterranean coastline, during five short surveys of mussel culture longline areas. Both the Reson Seabat 6012 multibeam sonar (455 kHz) and the Simrad SR 240 omnidirectional sonar (23.75 kHz) were used for target detection. The former tools allow accurate allocation of the different types of echoes to artefacts, fish schools and scattered fish. The school characteristics collected included morphological, geographical (GPS, school location), and behavioural (connections with the longlines). An acoustic survey undertaken with the same hardware near the study area allowed the comparison of fish schools and the TS distribution of individual fish in the open sea and in the mussel area. These data permitted us to evaluate the ecological impact of a mussel culture on the ecosystem, in a context of predation behaviour of fish on these longlines. Finally, the acoustic data revealed the configuration of each concession and the level of charge of each line. We discuss the applicability of this technology for in situ real time monitoring for joint management of such ecosystems. The information can allow littoral cooperative management or incorporating it into an ecosystem approach. |
| Databáze: | OpenAIRE |
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