Philip Shirk

Oregon State University | OSU · Cooperative Institute for Marine Resources Studies

We present an account of the 909 globally threatened taxa (793 species, 74 subspecies, 42 varieties) of animals and plants in the Eastern Arc Mountains and Coastal Forests of Kenya and Tanzania and the sites in which they occur based upon a review of the 2015 IUCN Red List of Threatened Species. Results for animals are summarised by Class (Amphibia...

AimWe map estimated historical population declines resulting from species-specific models of sensitivity to habitat fragmentation for three forest-dependent chameleons.LocationEast Usambara Mountains, Eastern Arc Mountains, Tanzania.Methods We surveyed three chameleon species (Rhampholeon spinosus, Rhampholeon temporalis and Trioceros deremensis) a...

Background/Question/Methods Habitat modification in the form of fragmentation and loss is a leading cause of biodiversity decline. The basic predictions from island biogeography theory that species richness and population size decrease with declining area and increased isolation have received considerable support. However much of this research ha...

Harvesting of chameleons from the East Usambara Mountains of Tanzania for the exotic pet trade is of concern due to the high rates of habitat loss in this region and the fact that many of the species are endemic or near endemic to this isolated montane forest. Export of the majority of chameleons found in the East Usambaras is regulated by their li...