Estimating population sizes to evaluate progress in conservation of endangered golden lion tamarins (Leontopithecus rosalia).

Efforts to reverse the decline of endangered golden lion tamarin monkeys have been relatively successful because the Brazilian organization dedicated to the species' conservation (Associação Mico-Leão-Dourado, AMLD) relies on science-based computer modeling to determine the number of tamarins necessary to achieve demographic and genetic goals, and a process of strategic planning to achieve those goals. Accurate estimates of the numbers of tamarins in forest fragments are essential to evaluate progress in achieving goals and adapt strategies as necessary. In this report we present the results of a new method to survey the number of tamarins in the wild, a modification of the point transect with lures procedure.

Increasing the impact of conservation projects.

To assure a future for endangered primates and many other species, we must develop and carry out projects for their conservation as quickly and effectively as possible, even with only limited information about the complex systems of biological, political, social, economic, and cultural factors influencing the conservation situation. Adaptive management, defined as the integration of design, management, and monitoring to systematically test assumptions to learn and adapt, provides practitioners a method for improving strategies to achieve and sustain the desired conservation impact. The Conservation Measures Partnership, a joint venture of conservation NGOs, developed the Open Standards for the Practice of Conservation, a freely available framework that guides practitioners through implementation of best conservation practices.