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.
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
By highlighting 12 invasive species that have been especially destructive, this seminal report encapsulates the threat to biodiversity posed by alien species and describes conservation solutions to help stem the mounting crisis
Documents the U.S. as a leader in the diversity of freshwater species, summarizes the conservation status of freshwater species by group, identifies freshwater biodiversity hotspots, and describes conservation solutions
A comprehensive listing and description of all natural plant communities (588 associations) in the Midwest, using the concepts of the U.S. National Vegetation Classification system.
This state-by-state analysis of U.S. biodiversity ranks all 50 states on several key biological characteristics, including diversity of species, endemism, levels of rarity and risk, and species already lost to extinction.
Nearly 600 terrestrial ecological systems in the United States, southern Alaska, and adjacent areas of Mexico and Canada are summarized in this report, which introduces and outlines the conceptual basis for a mid-scale classification unit: the ecological system.
A comprehensive assessment of aquatic biodiversity across the entire Upper Mississippi, including a complete classification of aquatic systems and identification of 22 areas of freshwater biodiversity significance.