Les bénéfices de la protection des mangroves de l’outre-mer français par le Conservatoire du littoral : une évaluation économique à l’horizon 2040

Giry, Florent; Binet, Thomas; Keurmeur, Nastasia

doi:10.4000/etudescaribeennes.10485

Cited by 5 publications

(4 citation statements)

References 29 publications

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“…Moreover, this is particularly interesting where the scientific evidence is not sufficient to support a comprehensive ES assessment as underlined by Mongruel et al (2018). In such comprehensive assessments, economic analysis generally relies on the use of benefit transfer (e.g., Giry et al, 2017;Trégarot et al, 2021), using values commonly associated to mangroves in the literature and applying them to the studied territory. Our approach enables capturing the originality of the mangroves of French Guiana regarding the ES provided, in comparison to mangroves at the global scale, and shows that the use of benefit transfer without better knowledge of these key ES and disservices along with their variability would be hazardous at best.…”

Section: Interest Of Fuzzy Cognitive Mappingmentioning

confidence: 99%

Ecosystem Services Assessment for the Conservation of Mangroves in French Guiana Using Fuzzy Cognitive Mapping

Scemama

Régnier

Blanchard

et al. 2022

Front. For. Glob. Change

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In 2016, the French government adopted a law for biodiversity, setting an objective of protecting 55,000 hectares of mangroves. This objective is particularly important to French Guiana, which shelters almost 60% of French mangrove ecosystems, and where mangroves occupy three quarters of the coastline. The coast of French Guiana is also where issues associated with demographic and economic dynamics concentrate. There is thus a need to plan for an economic development that is compatible with the objective of protecting mangrove ecosystems. Ecosystem services (ES) assessment can support such decision-making, informing on the costs and benefits associated with alternative mangrove conservation strategies. While the many services provided by mangrove ecosystems are well documented worldwide, the extent to which these can be encountered in the specific case of French Guiana is currently only very partially known. Relying on the Fuzzy cognitive mapping (FCM) approach, we collected and compared the perception of multiple and heterogeneous groups of stakeholders, of the functioning of the mangrove social-ecological system at the scale of French Guiana. Results, allow to identify mangroves ES and threats particularly influenced by the high sedimentary dynamism of the shoreline. This generates two distinct components of the mangrove social-ecological system: mud banks where ecosystem services are spatially and temporally unstable, and associated with perceived constraints for key coastal activities, and estuarine mangroves where the ecosystem services usually described in the literature on mangroves can be found. Disservices associated with mangrove ecosystems were also identified as a key interaction. This can inform the research needs that should support sustainable development trajectories, fully accounting for the protection of French Guianese mangrove ecosystems.

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Section: Interest Of Fuzzy Cognitive Mappingmentioning

confidence: 99%

Ecosystem Services Assessment for the Conservation of Mangroves in French Guiana Using Fuzzy Cognitive Mapping

Scemama

Régnier

Blanchard

et al. 2022

Front. For. Glob. Change

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show abstract

“…(Lebigre, 1983), composition conforme à la faible diversité spécifique des mangroves du Gabon (Spalding, 1997). Les mangroves sont considérées comme l'un des écosystèmes les plus productifs en termes de services écosystémiques (Giry et al, 2017). Dans l'Arc d'émeraude, elles assurent de nombreux services dont la fourniture en ressources halieutiques commercialisables (David et Cillaurren, 2018).…”

Section: Site D'étudeunclassified

Estimations, à partir de séries d’images LANDSAT, des évolutions de stocks de carbone de différentes formations en milieu équatorial côtier - cas de Libreville au Gabon

Me¹,

Pennober²,

Révillion³

et al. 2022

RFPT

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Le rôle des forêts dans la séquestration du carbone est important dans un contexte de changement climatique. Dans cet article, il est question d’effectuer une évaluation du stock de carbone dans la région de Libreville à partir des données de télédétection sur une période allant de 2001 à 2018. Cette évaluation des stocks de carbone végétal est basée essentiellement sur l’imagerie optique Landsat. En amont, une première analyse visant à produire une cartographie d’occupation du sol entre 2001 et 2018 a été effectuée. Ces résultats préliminaires ont par la suite été utilisés en tant que proxy pour l’évaluation des stocks de carbone en utilisant comme base les classes végétales de forêts terrestres et forêts de mangroves. La valeur moyenne de stock de carbone contenue dans chaque classe est issue des travaux bibliographiques réalisés majoritairement dans la même zone d’étude. La valeur totale du stock de carbone a été estimée à 70 913 018 ± 896 et à 68 340 383 ± 927 tonnes respectivement en 2001 et en 2018.

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“…The pioneering submerged front surface at high tide is estimated, whilst the amount of fish caught at low tide allows the estimate of fish biomass per unit area. The monetary value is often calculated based on the market price of fish (Failler et al, 2010;Giry et al, 2017;Trégarot et al, 2017) and the catchable fish biomass . In this study, we used the estimate of fish biomass production through fish farming instead, and accordingly valued the fish biomass production service through the replacement cost method as follow:…”

Section: Fish Biomass Productionmentioning

confidence: 99%

Mangrove ecological services at the forefront of coastal change in the French overseas territories

Trégarot

Caillaud²,

Cornet

et al. 2021

Science of The Total Environment

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Les bénéfices de la protection des mangroves de l’outre-mer français par le Conservatoire du littoral : une évaluation économique à l’horizon 2040

Cited by 5 publications

References 29 publications

Ecosystem Services Assessment for the Conservation of Mangroves in French Guiana Using Fuzzy Cognitive Mapping

Ecosystem Services Assessment for the Conservation of Mangroves in French Guiana Using Fuzzy Cognitive Mapping

Estimations, à partir de séries d’images LANDSAT, des évolutions de stocks de carbone de différentes formations en milieu équatorial côtier - cas de Libreville au Gabon

Mangrove ecological services at the forefront of coastal change in the French overseas territories

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