Schedlbauer, Jessica L.
Forest ecosystem responses to edge effects and secondary forest development in northeastern Costa Rica : implications for conservation - Turrialba (Costa Rica) Centro Agronómico Tropical de Investigación y Enseñanza (CATIE) 2007 Moscow, ID (EUA) University of Idaho 2007 - 94 páginas 1 Recurso en línea (108 páginas) 16 ilustraciones, 10 tablas +
Tesis (Ph. D.)
Incluye 41 referencias bibliográficas
Forest structure was examined at 20+ year old forest-pasture edges to assess edge effects. Stem density was significantly higher at forest edges than interiors due to an increase in small diameter trees close to edges. These data show that forest edges seal with dense vegetation in the 20+ years following edge creation, suggesting that edges are robust and likely to promote high-value environmental services in these forests.Measures of water-use efficiency (WUE) and stable carbon isotopes were used to evaluate changes in forest function at edges. Forest recruitment and carbon dynamics were examined in a chronosequence of secondary forest.To evaluate Costa Rica's 1996 Forestry Law initiating environmental service payments (pago por servicios ambientales, PSA) and prohibiting deforestation, landcover data were used to compare forest change before and after 1996. As result, secondary forests will persist as minor landscape components without incentives.
AGRICULTURA
BOSQUE SECUNDARIO
ECOSISTEMA
TIERRAS DE PASTOS
USO DEL AGUA
ISOTOPOS
CONSERVACION DE LOS RECURSOS
LEGISLACION
CARBONO
ESTIMACION
ECUACIONES ALOMETRICAS
COSTA RICA
Forest ecosystem responses to edge effects and secondary forest development in northeastern Costa Rica : implications for conservation - Turrialba (Costa Rica) Centro Agronómico Tropical de Investigación y Enseñanza (CATIE) 2007 Moscow, ID (EUA) University of Idaho 2007 - 94 páginas 1 Recurso en línea (108 páginas) 16 ilustraciones, 10 tablas +
Tesis (Ph. D.)
Incluye 41 referencias bibliográficas
Forest structure was examined at 20+ year old forest-pasture edges to assess edge effects. Stem density was significantly higher at forest edges than interiors due to an increase in small diameter trees close to edges. These data show that forest edges seal with dense vegetation in the 20+ years following edge creation, suggesting that edges are robust and likely to promote high-value environmental services in these forests.Measures of water-use efficiency (WUE) and stable carbon isotopes were used to evaluate changes in forest function at edges. Forest recruitment and carbon dynamics were examined in a chronosequence of secondary forest.To evaluate Costa Rica's 1996 Forestry Law initiating environmental service payments (pago por servicios ambientales, PSA) and prohibiting deforestation, landcover data were used to compare forest change before and after 1996. As result, secondary forests will persist as minor landscape components without incentives.
AGRICULTURA
BOSQUE SECUNDARIO
ECOSISTEMA
TIERRAS DE PASTOS
USO DEL AGUA
ISOTOPOS
CONSERVACION DE LOS RECURSOS
LEGISLACION
CARBONO
ESTIMACION
ECUACIONES ALOMETRICAS
COSTA RICA