Huge chunk of plants and animals in U.S. at risk of extinction -report

Subject: Environment

Section: Biodiversity

Concept :

A leading conservation research group found that 40% of animals and 34% of plants in the United States are at risk of extinction, while 41% of ecosystems are facing collapse. Everything from crayfish and cacti to freshwater mussels and iconic American species such as the Venus flytrap are in danger of disappearing, a report released on Monday found.

HUMAN ENCROACHMENT

Among the species at risk of disappearing are icons like the carnivorous Venus flytrap, which is only found in the wild in a few counties of North and South Carolina.
Nearly half of all cacti species are at risk of extinction, while 200 species of trees, including a maple-leaf oak found in Arkansas, are also at risk of disappearing. Among ecosystems, America’s expansive temperate and boreal grasslands are among the most imperiled, with over half of 78 grassland types at risk of a range-wide collapse.
The threats against plants, animals and ecosystems are varied, the report found, but include “habitat degradation and land conversion, invasive species, damming and polluting of rivers, and climate change.”