Mon 10 Jan 2011: 10am – Daniel Ng on “Effects of global warming and acid precipitation on tropical amphibians.”

Department of Biological Sciences, NUS
Qualifying Examination

“Effects of global warming and acid precipitation on tropical amphibians.”

Daniel Ng Jia Jun
Graduate Student,
Dept.of Biological Sciences, NUS

Mon 10 Jan 2011: 10.00am
Conference Room II

(S1-03 mezzanine; map)

Supervisor: David Bickford

ALL ARE WELCOME

Abstract – Dubbed the “canary in the global coal mine”, amphibians are generally believed to be good indicators of the environment’s health. However, their populations have been declining worldwide in recent years and one third of amphibians are threatened with extinction. Drastic declines have been observed even within pristine protected areas. Due to anthropogenic activities, atmospheric greenhouse gases and pollutants are rapidly rising. This has resulted in rising temperature and increased acidic deposition which are implicated in their current declines.

The aims of this study are to investigate the effects of low pH and elevated temperature on native amphibian species, ascertain whether there is any change in amphibian species distribution, and to estimate the impacts of global warming and acid precipitation on regional amphibian populations. Current results suggest that both low pH and elevated temperature can affect survival and can also work synergistically to have significant negative impacts on amphibians.

Photos of Daniel Ng
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