From Phoebe Weston at the Daily Mail, who offers a convenient bullet point format:
Revealed: The worrying state of Earth’s species in numbers as scientists warn the sixth mass extinction is here and wildlife is in a ‘global crisis’
Two species of vertebrate, animals with a backbone, have gone extinct each year
Currently more than a quarter of mammals are threatened with extinction
There are an estimated 8.7 million plant and animal species on our planet
About 86% of land species and 91% of sea species remain undiscovered
Starting Saturday, a comprehensive, global appraisal of the damage, and what can be done to reverse it, will be conducted in Colombia More.
The problem is, if we takes ecology seriously, how do we know?
Here are some questions one might ask:
Revealed: The worrying state of Earth’s species in numbers as scientists warn the sixth mass extinction is here and wildlife is in a ‘global crisis’ Why does this “global crisis” stuff remind me (b 1950) of the Cold War?
Two species of vertebrate, animals with a backbone, have gone extinct each year The whole business of speciation is a scandalous mess that won’t be addressed any time soon because frite lit is politically useful, especially for fundraising. Who decided that these life forms were species? What does that mean, exactly? When we say that they have “gone extinct,” how do we know that they have not simply mingled with a larger population with which they could hybridize and later separate from? I’m not trying to minimize the problem, just asking what, exactly, we are talking about?
Currently more than a quarter of mammals are threatened with extinction But again, what does “threatened” mean? At one time, beavers were threatened in Canada, now not much, apparently.
There are an estimated 8.7 million plant and animal species on our planet But how was this figure determined? By the random assignment of “lumpers” and “splitters” to the job, long before genome mapping became a tool? And if genome mapping is a tool, what are the cutoffs? How are they made? Are they applied across the board?
About 86% of land species and 91% of sea species remain undiscovered How do we know that these are correct numbers? They sound precise but what really underlies them? The situation could be much worse, or better, but who knows?
Starting Saturday, a comprehensive, global appraisal of the damage, and what can be done to reverse it, will be conducted in Colombia Well, it’s nice to see people assessing the problem but what tools are they using? Will this be real information or just more fundraising letters about situations that may or may not be the most serious ones?
See also: First mass extinction “engineered” by animals?
Lazarus species: animals listed as extinct that turned up again.
Nothing says “Darwin snob” like indifference to the mess that the entire concept of speciation is in