Titlebook: Beaver Protection, Management, and Utilization in Europe and North America; Peter E. Busher,Ryszard M. Dzi?cio?owski Book 1999 Springer Sc

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Reintroduction of the Beaver, ,, in the Netherlands, ability of pairs to reproduce, and could influence the territory size. The Biesbosch region is also contaminated by heavy metals, such as cadmium, and this may also influence beaver reproduction in the future.

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The Reintroduction of European Beaver, ,, in Poland,rograms has led to a large, viable beaver population in Poland. It is now necessary to implement an active management program for this species, a component of which would be an annual harvest of beavers. An annual harvest will reduce damage problems due to beaver activity, and help insure the continued health of the Polish beaver population.

synovial-joint

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ver populations was the direct re- sult of exploitation by humans. Now, at the end of the 20th century, protection, manage- ment, and reintroduction programs, coupled with a decline in the demand for beaver fur and other products, have allowed beaver populations to increase dramatically. Since bea-

Commonwealth

Elsa G. Baumeister,Andrea V. Pontoriero There is also movement (immigration and emigration) of animals among the three countries and between the countries and Russia. The long-term role of beavers as a keystone species in aquatic habitats is considered critical in the region, and far outweighs any short-term economic damage they may cause.

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