Biologists disagree as to what constitutes a species, with the trend lately towards applying progressively smaller levels of differentiation as evidence of species status.
A comprehensive analysis of the conservation status of the amphibians of North, Central, and South America and the Caribbean, where nearly two out of every five amphibians are threatened
A 2001 Supreme Court decision potentially eliminated wetlands and other waters that are “isolated” from navigable waters from jurisdiction of the Clean Water Act. This report assesses the potential impacts of the decision on biodiversity.
The most complete analysis ever of the conservation status of this nation's plants, animals, and ecosystems, Precious Heritage reveals that one-third of our species are at risk.
Synthesizing the experiences of more than two dozen sites around the world, this booklet describes how marine managed areas (MMAs) increase the diversity and abundance of native organisms and ecosystem resilience for generations to come.
This report reveals gaps in Canada's understanding of its own biodiversity, which is essential to enabling conservation action and effective reporting.
A hands-on guide to biodiversity inventory, this manual provides an overview of the data sources, analytical tools and methods, and field techniques involved in surveying lands for rare species and ecological communities of concern.