Archive for Category: "Biodiversity"
Mountains are especially vulnerable to climate change, so scientists are keeping a close watch on species such as the American pika (Ochotona princeps). This small mammal, which resembles a hamster and is a relative of the rabbit, lives in alpine and subalpine terrain across Western North America. Although relatively widespread and usually found in protected […]
The Nature Conservancy’s Atlas of Global Conservation is a fabulous resource for understanding biological diversity. Scientists have divided up the world into more than 1,000 ecoregions and analyzed how they compare across dozens of measures. I’ve used data from TNC’s atlas to create a slide deck that illustrates patterns in species richness and threats to […]
The United States boasts the greatest diversity of ecosystems of any country and it’s home to more than 200,000 species. But about one-third of U.S. plants and animals are considered at risk by biologists, and at least 500 U.S. species are already extinct or missing. How do the 50 states compare in terms of number […]
To list or not to list? That’s the key question facing the U.S. Fish and Wildlife Service when it comes to endangered species. More than 1,300 plants and animals have been granted federal protection and these so-called listed species are embroiled in practically every Western environmental issue. The Endangered Species Act (ESA) has real teeth […]
eBird, a real-time online birding checklist, has produced some fascinating animated maps showing week-by-week occurrences of U.S. species. Below is the animation for the Swainson’s hawk, the most migratory of American hawks. The patterns in the animations struck me as similar to the video of satellite imagery we recently posted which showed how the snowpack, […]