Disentangling the complex roles of markets on coral reefs in northwest Madagascar

Rapid degradation of the world's coral reefs jeopardizes their ecological functioning and ultimately imperils the well-being of the millions of people with reef-dependent livelihoods. Ecosystem accessibility is the main driver of their conditions, with the most accessible ecosystems being most...

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Main Authors: Eva Maire, Stephanie D'agata, Catherine Aliaume, David Mouillot, Emily S. Darling, Volanirina Ramahery, Ravaka Ranaivoson, Bemahafaly Randriamanantsoa, Tantely F. Tianarisoa, Abdoul Santisy, Joshua E. Cinner
Format: Article
Language:English
Published: Resilience Alliance 2020-09-01
Series:Ecology and Society
Subjects:
Online Access:https://www.ecologyandsociety.org/vol25/iss3/art23/
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author Eva Maire
Stephanie D'agata
Catherine Aliaume
David Mouillot
Emily S. Darling
Volanirina Ramahery
Ravaka Ranaivoson
Bemahafaly Randriamanantsoa
Tantely F. Tianarisoa
Abdoul Santisy
Joshua E. Cinner
author_facet Eva Maire
Stephanie D'agata
Catherine Aliaume
David Mouillot
Emily S. Darling
Volanirina Ramahery
Ravaka Ranaivoson
Bemahafaly Randriamanantsoa
Tantely F. Tianarisoa
Abdoul Santisy
Joshua E. Cinner
author_sort Eva Maire
collection DOAJ
description Rapid degradation of the world's coral reefs jeopardizes their ecological functioning and ultimately imperils the well-being of the millions of people with reef-dependent livelihoods. Ecosystem accessibility is the main driver of their conditions, with the most accessible ecosystems being most at risk of resource depletion. People's socioeconomic conditions can change as they get further from urban centers and can profoundly influence people's relationship with the environment. However, the mechanisms through which increasing accessibility from human societies affects natural resources are still unclear. A plausible mechanism through which markets influence the environment is through the socioeconomic changes that tend to accompany accessibility. We used social and ecological data from 10 coastal communities and 31 reefs in northwest Madagascar to (i) unravel the respective influences of the local fish market and coastal communities on reef fish biomass and (ii) investigate how communities' socioeconomic and resource use characteristics change with increasing proximity to markets. We used generalized additive models to reveal that reef fish biomass is strongly related to the accessibility of both markets and local communities. We also highlight that the ways coastal communities use marine resources changes predictably with market proximity. More precisely, market proximity affects fishing gear (technique effect), wealth, and selling strategies (scale effect) of coastal communities. Our findings emphasize the need to better quantify links between markets and fishing communities through household-level surveys to implement market-based actions that could help to regulate the effect of markets on both fish stocks and fishing communities.
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spelling doaj.art-98615f4bc87a4d239e9c33cf6f2d0dd72022-12-21T21:27:05ZengResilience AllianceEcology and Society1708-30872020-09-012532310.5751/ES-11595-25032311595Disentangling the complex roles of markets on coral reefs in northwest MadagascarEva Maire0Stephanie D'agata1Catherine Aliaume2David Mouillot3Emily S. Darling4Volanirina Ramahery5Ravaka Ranaivoson6Bemahafaly Randriamanantsoa7Tantely F. Tianarisoa8Abdoul Santisy9Joshua E. Cinner10MARBEC, Univ. Montpellier, CNRS, Ifremer, IRD, Montpellier, FranceWildlife Conservation Society, Marine Conservation, Madagascar ProgramMARBEC, Univ. Montpellier, CNRS, Ifremer, IRD, Montpellier, FranceMARBEC, Univ. Montpellier, CNRS, Ifremer, IRD, Montpellier, FranceWildlife Conservation Society, Global Marine Program, Bronx, New York, USAWildlife Conservation Society, Marine Conservation, Madagascar ProgramWildlife Conservation Society, Marine Conservation, Madagascar ProgramWildlife Conservation Society, Marine Conservation, Madagascar ProgramWildlife Conservation Society, Marine Conservation, Madagascar ProgramWildlife Conservation Society, Marine Conservation, Madagascar ProgramAustralian Research Council Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD AustraliaRapid degradation of the world's coral reefs jeopardizes their ecological functioning and ultimately imperils the well-being of the millions of people with reef-dependent livelihoods. Ecosystem accessibility is the main driver of their conditions, with the most accessible ecosystems being most at risk of resource depletion. People's socioeconomic conditions can change as they get further from urban centers and can profoundly influence people's relationship with the environment. However, the mechanisms through which increasing accessibility from human societies affects natural resources are still unclear. A plausible mechanism through which markets influence the environment is through the socioeconomic changes that tend to accompany accessibility. We used social and ecological data from 10 coastal communities and 31 reefs in northwest Madagascar to (i) unravel the respective influences of the local fish market and coastal communities on reef fish biomass and (ii) investigate how communities' socioeconomic and resource use characteristics change with increasing proximity to markets. We used generalized additive models to reveal that reef fish biomass is strongly related to the accessibility of both markets and local communities. We also highlight that the ways coastal communities use marine resources changes predictably with market proximity. More precisely, market proximity affects fishing gear (technique effect), wealth, and selling strategies (scale effect) of coastal communities. Our findings emphasize the need to better quantify links between markets and fishing communities through household-level surveys to implement market-based actions that could help to regulate the effect of markets on both fish stocks and fishing communities.https://www.ecologyandsociety.org/vol25/iss3/art23/accessibilitycoral reef fisheriesfish biomassmarket accesssocial-ecological systems
spellingShingle Eva Maire
Stephanie D'agata
Catherine Aliaume
David Mouillot
Emily S. Darling
Volanirina Ramahery
Ravaka Ranaivoson
Bemahafaly Randriamanantsoa
Tantely F. Tianarisoa
Abdoul Santisy
Joshua E. Cinner
Disentangling the complex roles of markets on coral reefs in northwest Madagascar
Ecology and Society
accessibility
coral reef fisheries
fish biomass
market access
social-ecological systems
title Disentangling the complex roles of markets on coral reefs in northwest Madagascar
title_full Disentangling the complex roles of markets on coral reefs in northwest Madagascar
title_fullStr Disentangling the complex roles of markets on coral reefs in northwest Madagascar
title_full_unstemmed Disentangling the complex roles of markets on coral reefs in northwest Madagascar
title_short Disentangling the complex roles of markets on coral reefs in northwest Madagascar
title_sort disentangling the complex roles of markets on coral reefs in northwest madagascar
topic accessibility
coral reef fisheries
fish biomass
market access
social-ecological systems
url https://www.ecologyandsociety.org/vol25/iss3/art23/
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