Tadpoles bulk up to meet the alien invaders
Jun30

Tadpoles bulk up to meet the alien invaders

What happens when an invasive, carapaced, and clawed alien predator arrives in your pond? Do you change your daily habits to avoid drawing dangerous attention? Bulk up to make yourself a tougher target? If you are an Iberian water frog, you do both.   Pelophylax perezi is the most widespread and numerous of the native frogs and toads on the Iberian peninsula, known in Spain as rana común, the common frog. In this video abstract,...

Read More
Yellowstone wolves take a blow to their rep
Mar11

Yellowstone wolves take a blow to their rep

A well-publicized depiction of wolves revitalizing Yellowstone’s ecosystem is a myth, said writers for the NY Times‘ op-ed page and a Nature news feature last week. This is the story: For thousands of years, wolves shaped the ecology of Yellowstone. That changed in the twentieth century, when people succeeded in eradicating a competitor and perceived threat from the lower 48. In the predators’ absence, elk and deer overran the...

Read More

Animal Jurisprudence

by Liza Lester, ESA communications officer. AFTER co-authoring a 2005 paper imagining “Re-wilding  North America” with giant Bolson tortoises, camels, horses, cheetahs, elephants and lions, Harry Greene received a lot of hate mail. Corresponding ecologists hated the idea of deliberate transcontinental introductions of any kind. The plan smacked of impractical, dangerous, hubris and many ecologists didn’t buy African elephants and...

Read More