Community Assembly in Philippine Shrews
Author Information
Author(s): Esselstyn Jacob A., Maher Sean P., Brown Rafe M.
Primary Institution: McMaster University
Hypothesis
The distributions of shrew (Crocidura) species in the Philippines are the result of competitive exclusion preventing secondary invasion of occupied islands.
Conclusion
The study suggests that competitive exclusion among ecologically similar species may limit diversification in Philippine shrews.
Supporting Evidence
- Ecological niche models indicate potential habitat overlap between Crocidura species.
- Phylogenetic analysis suggests overdispersion in body size among sympatric species.
- Simulations show that successful colonization events are limited by competitive exclusion.
Takeaway
This study looks at how shrews in the Philippines might not be able to live together because they compete for the same homes.
Methodology
The study used ecological niche modeling, phylogenetic analysis, and simulations of inter-island colonization.
Potential Biases
Potential biases in sampling and assumptions about species distributions may affect the results.
Limitations
The statistical power is limited due to the small clade size and uncertainty in the geographic distribution of Philippine Crocidura.
Participant Demographics
The study focuses on nine species of shrews endemic to the Philippine archipelago.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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