Blogging about Nature: Introducing Garry Rogers on the League of Bloggers for a Better World
My blog posts are about nature, about wildlife and its habitat (posts). They are expressions of my concerns for natural conditions and events.
During the past year, 2015, lethal heat waves and storms, decline of the great iconic species of elephants, lions, and rhinos, whittling away of the tropical rain forests, and massive clouds of air and water pollution made it clear that humanity is changing the Earth.
More than just the great species, we are eliminating many other species hundreds or perhaps thousands of times more quickly than ever achieved by meteorites, volcanic eruptions, or natural climate change.
Total extinction of a species usually happens after decades of decline. In 2014, the World Wildlife Fund and other organizations carried out an exhaustive analysis of more than 10,000 wildlife studies (download the report). They wanted to know how wild plants and animals were holding up against human activities. They learned that from 1970 to 2014, just 44 years, the total number of animals on Earth declined by more than 50%! Rates of decline vary across species groups. Birds, for instance declined by 40%. Other groups, especially those dependent on freshwater, have declined by 70%.
What evolution took billions of years to produce, we humans are destroying in a tick of geologic time. We are changing the planet so quickly, that not by migration, and certainly not by natural selection, can plants and animals cope. If we continue our activities at their current rate, in only a few centuries, we will turn the Earth into a factory farm of cities, farms, feedlots, and roads with only the tiniest fraction of our native creatures surviving on the fringes.
I often write brief comments without listing my sources. I am always happy to respond to requests for explanations.