Life’s Optimal Temperature

A recent study by scientists from numerous global institutes found that 20°C is suitable for life on Earth. Norwegian, Tasmanian, Canadian, Scottish, German, Hong Kong, and Taiwanese researchers conducted this first systematic review. This temperature is pleasant for humans and enhances ecosystem species health, they say.
A new study challenges the idea that warm waters near the equator have the most marine life. New Zealand researchers found a reduction in species populations that has been worsening since the end of the last ice age 20,000 years ago, defying prevailing notions. Ocean warming is the main cause of this reduction.
Researchers observed that species need more energy to expel heat at temperatures above 20°C, reducing productivity and efficiency. Many species have adapted to different temperatures, but fossil records imply reduced extinction rates at 20°C.
Scientists warn that the rapid speed of climate change is outpacing new species’ ability to adapt and replace those disappearing in the lowest latitudes. A careful survey of 54 peer-reviewed academic studies confirmed this. An article discusses how temperatures above 20°C can decrease genetic diversity, marine and freshwater species’ tolerance of low oxygen, algal productivity in open water and seabed ecosystems, fish predation rates, and marine species richness.
The mathematical Corkrey Model predicts that stable and efficient biological activities occur at 20°C by limiting thermal breadth.
Marine animals may adapt to global warming by relocating, but terrestrial species struggle in human-altered ecosystems like towns and farms, experts say. This study emphasises the need to preserve Earth’s delicate temperature balance for life. Climate change must be addressed to protect biodiversity in varied ecosystems.