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- W2123502513 abstract "There is a lack of research on the effects of logging on Canadian amphibians. We compared the abundance of terrestrial salamanders in old-growth forests with that in young and mature post-harvest stands. We also measured habitat features of amphibians and contrasted these with old-growth and harvested stands to assess the effects of forest harvest. Quadrat searches demonstrated that clearcut harvesting reduces terrestrial amphibian populations by up to 70% in coastal old-growth forests. We suggest that this reduction results from a decrease in availability of moist microhabitats. Salamander densities within 10 meters of streams in managed stands were similar to those near and away from streams in old growth. We recommend that forest managers recognize the needs of terrestrial amphibians and help maintain amphibian populations by preserving cool, moist habitats. This can be accomplished within cutblocks by (1) maintaining an even distribution of logs and snags as stable, moist microhabitats; (2) retaining some understory as sources of shade, and (3) preserving streamside buffers. Managers must also ensure some level of landscape connectivity to enable climate-sensitive amphibians to disperse and recolonize marginal habitats. Existe una falta de investigación sobre los efectos de la tala sobre los anfibios canadienses. En este estudio comparamos la abundancia de las salamandras terrestres en bosques primarios con aquellas de bosques talados jóvenes y maduros. También, medimos las características del hábitat de los anfibios y las contrastamos con bosques primarios y rodales bajo explotación, para evaluar los efectos de la tala. Muestreos basados en la busqueda de salamandras en una serie de cuadrantes dispuestos al azar dentro de un área limitada, demostraron que la tola redujo las poblaciones de anfibios hasta en un 70% en bosques costeros primarios. Sugerimos que esta reducción es el resultado de un decrecimiento en la disponibilidad de microhábitats búmedos. Las densidades de salamandras dentro de los 10 m que bordean a los arroyos en rodales bajo manejo, fueron similares a aquellas en áreas cercanas y lejanas a los arroyos en bosques primarios. Recomendamos que los encargados de administrar bosques, reconozcan la necesidad de un los anfibios terrestres y ayuden a mantener las poblaciones de anfibios preservando hábitats frescos y húmedos. Esto puede lograrse dentro de los bloques talados mediante 1. et mantenimiento de una distribución pareja de troncos cortados y tocones como micro-hábitats húmedos estables; 2. dejando parte del sotobosque como fuente de sombra y 3. preservando áreas a los costados de los arroyos que sin an para amortiguar los efectos de la tala. También se debe asegurar un cierto nivel de conectividad dentro del paisaje, que permita a los anfibios sensibles a los cambios climáticos, dispersarse y recolonizar hábitats marginales." @default.
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- W2123502513 date "1995-06-01" @default.
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- W2123502513 title "Relation of Terrestrial-Breeding Amphibian Abundance to Tree-Stand Age" @default.
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- W2123502513 doi "https://doi.org/10.1046/j.1523-1739.1995.09030645.x" @default.
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