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GHOST MED: ASSESSMENT OF THE IMPACT OF LOST FISHING GEAR IN THE FRENCH MEDITERRANEAN SEA

Abstract : Lost and abandoned fishing gear affects all marine habitats, both coastal and offshore habitats such as bathyal habitats, including canyons. Not only professional fishing nets, longlines and fishing traps are concerned, but also recreational fishing tackle (fishing lines, lead weights, hooks, etc.). This lost gear causes various forms of negative impact including ghost fishing, that has been extensively studied for several decades. However, the lack of information on the quantification of lost gear and the assessment of impacts other than ghost fishing is critical worldwide. The aim of the Ghost Med program is (i) to quantify the lost fishing gear in the Mediterranean and characterise the habitats concerned, (ii) to address federate underwater observers and citizen science to better collect data on fishing gear loss events, (iii) to assess their impact on species and habitats, and (iv) to propose tools to managers in order to prioritize, or not, their removal. The protocol is based on an assessment of the environmental and seascape impact of the lost gear as well as the technical risks involved in its removal. Each of these parameters was measured using several criteria, such as the number of mobile species trapped in the gear, the number of fixed species damaged or uprooted and the alteration of the habitat relief. All these criteria are weighted by a score which will then be used to calculate the lost gear Removal Aid Index (RAI). This simple-to-use protocol should help Marine Area managers to determine whether gear removal should be considered. This protocol is currently used as a basis for the assessment and removal of fishing nets in France, and could be extended to all Mediterranean coasts.
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Submitted on : Friday, April 26, 2019 - 2:22:32 PM
Last modification on : Wednesday, November 3, 2021 - 6:36:20 AM

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  • HAL Id : hal-02112113, version 1

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Sandrine Ruitton, Bruno Belloni, C. Marc, Charles Boudouresque. GHOST MED: ASSESSMENT OF THE IMPACT OF LOST FISHING GEAR IN THE FRENCH MEDITERRANEAN SEA. 3rd symposium on the conservation of coralligenous and other calcareous bio-constructions, Jan 2019, Antalya, Turkey. ⟨hal-02112113⟩

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