African rhinos | WWF While the species is bearing the brunt of the surge in poaching, it is one of conservation’s greatest success stories Once thought to be extinct, a population of less than 100 was found in 1895 in South Africa After more than a century of protection and management, the species now numbers over 20,000 and has been reclassified as Near
More than mortality: Consequences of human activity on . . . With more than 13,000 species of vascular plants naturalized beyond their native habitat (van Kleunen et al 2015) and new introductions occurring regularly (Seebens et al 2017), migrating birds are likely to stop over in habitats with introduced plants during their journeys While not all introduced species are harmful, we specifically
Conserving Biological Diversity in Agricultural Forestry Systems species diversity tend to focus on im-pressive species like whooping cranes and tigers, there are equal or greater threats to the small organisms like arthropods and microbes (Douro-jeanni 1990) The small organisms of-ten are more specialized and adapted to certain plant species and habitats than are the large animals, and there-
Many Birds Are Shrinking and Growing Longer Wings as the . . . In one 2010 study of birds captured in Pennsylvania, researchers found 197 of 249 bird species had declined in average weight since 1961, while their wing length remained more consistent (or even increased, depending on species) A 2020 study of more than 70,000 individual birds also found increasing wing length along with reductions in body