Social and Behavioral Sciences Commons^™

The Difficult Problem Of Nonpoint Nutrient Pollution: Could The Endangered Species Act Offer Some Relief?, Zdravka Tzankova

Zdravka Tzankova

Nutrient pollution of rivers, streams, lakes, and estuaries is one of the preeminent water quality issues in the United States today, and poses a significant threat to the health of aquatic ecosystems. Agricultural nonpoint discharges, the runoff of nitrogen and phosphorous from animal manure and chemical fertilizers, are the primary sources of such nutrient pollution.

A pervasive and long-standing problem, nonpoint pollution, nutri- ent and otherwise, has proven to be one of the toughest challenges in contemporary environmental regulation. This situation is significantly attributable to the political and administrative dynamics of fragmented regulatory authority. The power to control such nonpoint …

Can The Esa Address The Threats Of Atmospheric Nitrogen Deposition? Insights From The Case Of The Bay Checkerspot Butterfly, Zdravka Tzankova, Dena Vallano, Erika Zavaleta

Zdravka Tzankova

The Bay Checkerspot Butterfly reached its threatened status largely as a result of habitat loss through development. The species now benefits from the habitat pro- tection powers of the Endangered Species Act, yet the biggest new hazard to the survival of remaining Bay Checkerspot Butterfly populations may come from atmospheric nitrogen deposition. Driven by combustion and agricultural emissions, such deposition is an important cause of change in ecosystem structure and function, including potentially critical changes in the remaining Bay Checkerspot Butterfly habitat. We use the Bay Checkerspot Butterfly case to examine whether the Endan- gered Species Act, as it currently …