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Concepts and a methodology for evaluating environmental services from trees of small farms in Chiapas, Mexico

Marinidou, Eleni [autora] | Finegan, Bryan [autor] | Jiménez Ferrer, Guillermo [autor] | Delgado, Diego [autor] | Casanoves, Fernando [autor].
Tipo de material: Artículo ArtículoTipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Servicios ecosistémicos | Captura de carbono | Valor ecológico | Conservación de la diversidad biológicaDescriptor(es) geográficos: Selva Lacandona (Chiapas, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Journal of Environmental Management. volumen 114 (January 2013), páginas 115-124. --ISSN: 0301-4797Número de sistema: 35794Resumen:
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We propose a methodology to estimate the environmental service (ES) value of small farms in Chiapas, Mexico, involving trained farmers-promoters in field sampling. We considered the ways in which the landscape's principal organisms, the trees, contribute to ES. We proposed a species functional value (FV) index based on their functional traits and key ecological characteristics, and estimated each site's ES value using FV weighted by the dimensions and abundance of individuals in different land uses (LU). Tree contribution to carbon storage (C) was defined using species wood density and biodiversity conservation value (BD) using food and habitat provision for wildlife and species existence (non-use) value (EX). Many species and individuals had high C, as wind-dispersed species with dense wood were common, but low BD prevailed, with high BD species common only in riparian forests. Few species and fewer individuals had high EX conferred by dense wood, large size, harvesting pressure and animal dispersal, among others. High variance in value within LU types, suggested that LU is a poor estimator of ES value, and that the measurement of species FV and tree dimensions is essential. This tool accurately reflects the ecological values of farm tree cover, allowing negotiation of compensation for environmental services. This methodology could be implemented combining open-access regional traits databases and field sampling by local people, and can easily be adapted for the measurement of other ES, and to other ecological and cultural contexts. The functional ecology approach was adapted to assess environmental services. Existence (non use) value of trees was used in biodiversity service estimation. Environmental services valuation based only on land use category is questioned. Outside forest, carbon service value was high but biodiversity value low. We recognize complexity to accurately estimate environmental service supply.

Recurso en línea: https://reader.elsevier.com/reader/sd/pii/S0301479712005518?token=62254387A93483B72255060E994B90506E3DE37DD13897069AC9A566C501A12E5B43BB232A1090CC1F4C696D2689CC01&originRegion=us-east-1&originCreation=20211209181309
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Disponible para usuarios de ECOSUR con su clave de acceso

We propose a methodology to estimate the environmental service (ES) value of small farms in Chiapas, Mexico, involving trained farmers-promoters in field sampling. We considered the ways in which the landscape's principal organisms, the trees, contribute to ES. We proposed a species functional value (FV) index based on their functional traits and key ecological characteristics, and estimated each site's ES value using FV weighted by the dimensions and abundance of individuals in different land uses (LU). Tree contribution to carbon storage (C) was defined using species wood density and biodiversity conservation value (BD) using food and habitat provision for wildlife and species existence (non-use) value (EX). Many species and individuals had high C, as wind-dispersed species with dense wood were common, but low BD prevailed, with high BD species common only in riparian forests. Few species and fewer individuals had high EX conferred by dense wood, large size, harvesting pressure and animal dispersal, among others. High variance in value within LU types, suggested that LU is a poor estimator of ES value, and that the measurement of species FV and tree dimensions is essential. This tool accurately reflects the ecological values of farm tree cover, allowing negotiation of compensation for environmental services. This methodology could be implemented combining open-access regional traits databases and field sampling by local people, and can easily be adapted for the measurement of other ES, and to other ecological and cultural contexts. The functional ecology approach was adapted to assess environmental services. Existence (non use) value of trees was used in biodiversity service estimation. Environmental services valuation based only on land use category is questioned. Outside forest, carbon service value was high but biodiversity value low. We recognize complexity to accurately estimate environmental service supply. eng

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