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Deploying Community Scientists to Conduct Nondestructive Genetic Sampling of Rare Butterfly Populations
Published on: October 28, 2022
Does tropical forest fragmentation increase long-term variability of butterfly communities?
Allison K Leidner1, Nick M Haddad, Thomas E Lovejoy
1Department of Biology, North Carolina State University, Raleigh, North Carolina, United States of America. Leidner@umd.edu
Plos One
|March 13, 2010
Summary
Habitat fragmentation increases variability in butterfly communities, leading to hyperdynamism. This means species richness fluctuates more in fragmented forests, impacting overall biodiversity dynamics.
Area of Science:
- Ecology
- Biodiversity research
- Conservation biology
Background:
- Habitat fragmentation is a primary driver of biodiversity loss globally.
- Species exhibit varied responses to habitat fragmentation, potentially masking overall effects.
- Hyperdynamism, characterized by increased variability in species richness and abundance, can result from opposing species responses.
Purpose of the Study:
- To investigate the long-term effects of forest fragmentation on butterfly community dynamics.
- To determine if fragmentation causes hyperdynamism in butterfly communities.
- To analyze changes in species richness and community composition over time in response to fragmentation.
Main Methods:
- Utilized an 11-year dataset from an experimentally fragmented landscape in the central Amazon.
- Evaluated changes in adjusted species richness and community composition between fragmented and intact forests.
- Analyzed spatial and temporal variation in species richness and abundance using rarefaction.
Main Results:
- Adjusted species richness did not differ between fragmented and intact forests.
- Spatial and temporal variation in adjusted species richness was significantly higher in fragmented forests.
- Fragmented forests showed a decrease in understory shade species and an increase in edge species, indicating shifts in community composition.
- Rarefied species richness variation did not differ, suggesting abundance changes explain richness variability.
Conclusions:
- Forest fragmentation leads to increased variability (hyperdynamism) in butterfly communities.
- Changes in butterfly abundance contribute to the higher variability observed in fragmented habitats.
- The natural variability of butterflies does not buffer them against the community dynamic effects of fragmentation.
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