“With the change in atmosphere, animals, plants and ecosystems, such as oceans are also changing. Animals and plants must adapt to the new temperatures,” Vice-Chairman of University Grants Commission H. Devaraj, said here on Tuesday.

Speaking at the international congress of ‘Global Warming on Biodiversity of Insects – Management and Conservation Strategies’ he warned that the Arctic’s top predator, the polar bear, was affected by the reduction in sea ice and also by the reduced stock of its primary food – the ringed seal.

Sandeep Saxena, Agricultural Production Commissioner, Tamil Nadu, said agriculture and fisheries were highly dependant on specific climatic conditions.

“Trying to understand the overall effect of climate change on our food supply can be difficult. Changes in the frequency and severity of droughts and floods could pose challenges for farmers. Overall, climate change could make it difficult to grow crops, raise animals, and catch fish in the same way and same places as we have done in the past,” he said.

Talking at the congress, G. James Pitchai, Vice-Chancellor of Bharathiar University, pointed out that the impacts of increasing temperatures were already evident in various forms.

“Climate change is the single biggest environmental and humanitarian crisis of our time. It is changing our economy, health and communities in diverse ways. Scientists warn that if we do not aggressively curb climate change now, the results will be disastrous,” the Vice-Chancellor said.