NDLI: The Influence of Habitat Variables on Bird Communities in Forest Remnants in Costa Rica

Content Provider	Springer Nature Link
Author	Matlock, Robert B. Edwards, Peter J.
Copyright Year	2006
Abstract	This study examined the effects of forest structure (tree species richness, canopy height, percent canopy cover, understory density, tree density and DBH) and avian species traits (nest type and indicator list status) on the diversity, abundance and dissimilarity of bird communities in forest remnants and reforestation areas adjacent to Costa Rican banana plantations. Bird species richness and abundance were significantly related to tree species richness, canopy height and canopy cover in multiple linear regressions, the latter two forest structure variables being the best statistical predictors. Stratification of analyses by bird species indicator categories improved fits of regressions, because correlations with environmental variables differed in sign for different guilds of birds, a result likely to hold for other avifaunas. Analysis of avifauna dissimilarities among sites demonstrated that the species composition of bird communities was highly correlated with forest structure and tree species composition. Logistic regressions indicated that birds making protected (cavity, burrow, pendant, sphere and covered) nests were 2–6 times more likely to be present in the study avifauna than birds making open (cup, saucer, platform and scrape) nests and indicators of disturbed habitats were 11 times more likely to be present than indicators of primary forest. The forest structure data used were simple and inexpensive to collect, and data on avian traits were drawn from the literature. Thus, these methods could easily be replicated at other locations and would be valuable management aids and biodiversity assessment tools for conservation planning.
Starting Page	2987
Ending Page	3016
Page Count	30
File Format	PDF
ISSN	09603115
Journal	Biodiversity and Conservation
Volume Number	15
Issue Number	9
e-ISSN	15729710
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-07-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Banana Bird diversity Costa Rica Fragmentation Nest predation Rapid assessment Tropical Vegetation structure Evolutionary Biology Tree Biology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation

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