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BioRisk 2: 1-32
doi:
10.3897/biorisk.2.4
Published:
27 Nov 2009
This article is part of:
Authors
Risto Heikkinen
- Corresponding author
Finland
Finnish Environment Institute, Helsinki, Finland
Finnish Environment Institute, Helsinki, Finland
Finnish Museum of Natural History, Helsinki, Finland
Finnish Environment Institute, Helsinki, Finland
Conflict of interest
The authors have declared that no competing interests exist.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.