Title :

A spatio-temporal ecosystem model to simulate fishing management plans: A case of study in the Gulf of Gabes (Tunisia)

Author(s) :

Halouani, Ghassen [Auteur]
Ecosystèmes et Ressources Aquatiques [UR03AGRO1]
Laboratoire des Sciences de l'Environnement Marin (LEMAR) [LEMAR]
Abdou, Khaled [Auteur]
Ecosystèmes et Ressources Aquatiques [UR03AGRO1]
Laboratoire des Sciences de l'Environnement Marin (LEMAR) [LEMAR]
Hattab, Tarek [Auteur]
Ecologie et Dynamique des Systèmes Anthropisés - UMR CNRS 7058 UPJV [EDYSAN]
Romdhane, Mohamed Salah [Auteur]
Ecosystèmes et Ressources Aquatiques [UR03AGRO1]
Lasram, Frida Ben Rais [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Université du Littoral Côte d'Opale [ULCO]
Le Loc’h, François [Auteur]
Laboratoire des Sciences de l'Environnement Marin (LEMAR) [LEMAR]
Institut de Recherche pour le Développement [IRD]

Journal title :

Marine Policy

Pages :

62-72

Publisher :

Elsevier

Publication date :

2016-07

ISSN :

0308-597X

English keyword(s) :

ecopath
ecosim
Ecospace
Ecosystem model
exploited ecosystems
fisheries management
Fishery management
Fishing regulation
Gulf of Gabes
impacts
patterns
sea
ACL

HAL domain(s) :

Sciences de l'environnement/Biodiversité et Ecologie

English abstract : [en]

The Gulf of Gabes located in southern Tunisia is one of the most productive ecosystems in the Mediterranean Sea. Despite its ecological importance, it is subject to high fishing pressure affecting the different components ...
Show more >The Gulf of Gabes located in southern Tunisia is one of the most productive ecosystems in the Mediterranean Sea. Despite its ecological importance, it is subject to high fishing pressure affecting the different components of the ecosystem. Given the multispecies, multigear nature of the fishery, there is a need to manage trade-offs between environmental and economic objectives. In this study, an Ecospace model was developed based on the previously constructed Ecopath model of the Gulf of Gabes and calibrated for the period 1995-2008 to investigate the response of the ecosystem to a set of alternative spatial management scenarios. These scenarios were derived from the current fishery regulation owing the important interest expressed by local fishery managers to assess new management measures. The results showed for each management scenario how bottom trawling and coastal fishing impact the different trophic groups and the complexity of interaction between these two fishing activities. Furthermore, spatially explicit simulations were performed to identify regions where the management measures are effective. Results suggested that for some trophic groups, these regions are well-defined which would be interesting to propose more accurate spatial measures. Finally, several indicators were calculated to evaluate the proposed management plans and provide managers with a straightforward set of decision rules to describe the potential trade-offs and fulfill both fisheries and conservation management objectives in the context of an ecosystem approach. The decision rules were based on observed trends to reduce uncertainty relative to the model complexity and provide consistent advice to decision makers.Show less >

Language :

Anglais

Popular science :

Non

Comment :

00001 ăWOS:000377228800007

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL

Submission date :

2024-01-06T03:57:34Z