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- Perfecto, Ivette; Snelling, Roy
- Ecological applications 1995 v.5 no.4 pp. 1084-1097
- Formicidae; agroecosystems; arthropods; canopy; farms; humans; modernization; pitfall traps; plantations; species diversity; Costa Rica
- ... Studies of biological diversity have focused mainly on undisturbed ecosystems, effectively neglecting potential losses due to changes in areas already altered by human intervention. In this study we test the hypothesis that measures of biological diversity change significantly with changes in agricultural practices. In particular, we examine differences in measures of ant species diversity correla ...
- Denslow, Julie Sloan
- Ecological applications 1995 v.5 no.4 pp. 962-968
- anthropogenic activities; canopy gaps; enzyme kinetics; habitats; logging; models; mortality; saplings; seedlings; shrubs; species diversity; tropical rain forests; Costa Rica
- ... A null model for the effects of treefall gaps on tree species diversity of tropical rain forests is based on the well‐known relationship between abundance and diversity: habitats supporting larger numbers of individuals can support more populations and more species than habitats supporting small numbers of individuals. Because seedling establishment and sapling density increase following canopy op ...