Edge-related variation in medicinal and other "useful" wild plants of Bwindi Impenetrable National Park, Uganda.

Harvesting of wild plants for nontimber uses is widespread in the tropics, but its impact is usually quantified only for one or a few species at a time. Thus, forest managers are never clear about how well their efforts are protecting such plants. We quantified abundance and edge-related variation in 91 species of useful wild plants commonly harvested by communities around Bwindi Impenetrable National Park (BINP), Uganda, to evaluate the effect of their harvest.

Use of male blue monkey "Pyow" calls for long-term individual identification.

This study examines whether individual adult male blue monkeys (Cercopithecus mitis stuhlmanni) can be identified through acoustic analysis of their "pyow" calls. It is possible to reliably assign the pyow call of the blue monkeys of Kibale Forest, Uganda, to the individual caller based on the acoustic properties of the vocalization. Analysis of pyows made by a recognizable male over a 10-yr period shows that the acoustic properties of one individual's pyow call can remain relatively constant over time.