Ravera F., Tarrason D., Espelta J.M. (2014) Land use change trajectories, conservation status and social importance of dry forests in Nicaragua. Environmental Conservation. : 0-0.LinkDoi: 10.1017/S0376892914000186
Interdisciplinary studies have proved the interconnectedness of history and ecology relevant to forest conservation proposals and management policies. Engaging local views and concerns in the evaluation and monitoring process can lead to more robust knowledge in the pursuit of effective conservation. This study aimed to assess the degree to which land use change trajectories influence the state of tropical dry forest conservation, as evaluated by scientists and local people. Focusing on northern Nicaragua, the research identified three historical trajectories for types and magnitude of forest disturbance. The assessment process included inventorying sites under different trajectories and integrating ecological and social indicators (namely local perceptions of biodiversity value and concern over species threat). The different land use change trajectories had no influence on the present structure of the dry forest, but strongly affected species diversity, composition and their social importance. The study provided evidence of positive species selection by farmers, which suggested a feedback loop between ecological conditions, social value and awareness of conservation. Copyright © Foundation for Environmental Conservation 2014.
Andrés P, Tarrasón D, Ravera F, Espelta JM, López K, Urrutia, JT, Rocha J (2012) La construcción de conocimiento complejo para la restauración de territorios económica y ambientalmente degradados. Un caso de aplicación a áreas ganaderas del trópico seco. (Ponencia por invitación) En: Simposio Internacional de Restauración Ecológica. Retos y Estrategias de Restauración en el Caribe Colombiano. Universidad del Atlántico. Barranquilla (Colombia). 25-27 de julio de 2012.
Tarrasón D., Urrutia J.T., Ravera F., Herrera E., Andrés P., Espelta J.M. (2010) Conservation status of tropical dry forest remnants in Nicaragua: Do ecological indicators and social perception tally?. Biodiversity and Conservation. 19: 813-827.LinkDoi: 10.1007/s10531-009-9736-x
Intensive deforestation is reducing dry tropical forest areas worldwide and increasing its fragmentation. Forest remnants can be the basis for the future recovery of this forest type if appropriate management practices are applied. This requires a better knowledge of their conservation status and the assessment of their perceived value by land users. In this study we compare the structure, species richness and diversity of different types of tropical dry forest remnants in Nicaragua and we assess their conservation status based on a new index: Social simplified Importance Value Index (SsIVI). This index summarizes both ecological indicators and the perception by local stakeholders of the conservation status of the tree species present. Results show that gallery and hillslope forest remnants have higher species richness and diversity than isolated vestigial patches. In all remnants, species richness and diversity is higher in the tree layer than in the regeneration layer. No differences are observed in valorisation among different types of remnants either for the tree layer or for the regeneration layer. In the hillslope forests, where several degrees of disturbance are present, the valorisation decreases with increasing degradation. Results of species composition and forest structure indicate a strong degradation of dry tropical forest remnants in Nicaragua. However, the similar social valorisation of the three types of remnants suggests that they face similar threats but also similar opportunities to be preserved. A decrease in valorisation with increasing degradation warns about the potential loss of the most degraded areas, unless forest restoration is applied. © Springer Science+Business Media B.V. 2009.
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