Threatened and endangered species

Endangered Species Act (ESA) 1973 Conserves threatened and endangered species, and the ecosystems on which those species depend, by maintaining guidelines for placement of wildlife and plant species on a list, preventing removal of the species and habitat, and providing a mechanism to ensure federal actions will not impair or jeopardize protected species and their habitats... 

Cvetkovich, G., and P.L. Winter. 2003. Trust and social representations of the management of threatened and endangered species. Environ. Behav. 35(2) 286-307. 

Chemicals or other pollutants determined to be of concern because of likely effects on threatened and endangered species or on commercially or recreationally important species or of ecosystem function significance Existing Priority Pollutant List, chemicals or pollutants identified as significant contributors to... 

Traditionally, estimation of the ecological impacts of chemical toxicants has been done by comparing individual-level endpoints of toxicity to an expected, or range of expected, environmental concentrations (Suter 1993 Klaine et al. 1996 Solomon et al. 1996 Giesy et al. 1999). However, the ability of this approach to protect threatened and endangered species has been questioned (Stark et al. 2004), and the use of population modeling has been suggested as a more feasible means to ascertain the fate of populations under stress (Nacci et al. 2005). 

Tazik DJ and Martin CO, Threatened and endangered species on U.S. Department of Defense lands in the arid west, USA, Arid Land Res. Manage., 16, 259, 2002. 

Threatened and endangered species—Plant or animal species that have been designated as being in danger of extinction. 

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