Table of Contents
Anthropogenic effects have increased the greenhouse effect, which has changed the climate to
produce ever increasing maximum temperatures.Increased temperatures threaten some lizard species
in highly biodiverse tropical and subtropicalregions. Some, such as thermoconformer species in
tropical forests and live bearers appear to be particularly vulnerable. Most varanids are top
predators, generally have large territories, and have low population densities, which make them
vulnerable to habitat loss, habitat fragmentation, and over-harvesting. All monitor lizards are
listed by CITES as Endangered, and five species are officially listed as “threatened with
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