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DocumentThe status of invasiveness of forest tree species outside their natural habitat: a global review and discussion paper 2003
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No results found.This discussion paper presents a global review of the status of the invasiveness of forest tree species outside their natural habitat. The review covers trees and woody shrubs commonly used in commercial forestry and agroforestry. Information for the review has been collated from published databases and papers, unpublished reports and personal communications. A number of definitions of “invasive species” have been suggested in the literature, some specifically for invasive plants or woody plants . It is recommended here that, in the context of forestry, a common definition be developed that focuses on parameters of population expansion only, because in some common definitions of invasive species impacts are preconceived to be negative. On a global basis, available information on the status of forestry trees that have become invasive is patchy. The terminology used by authors is also very variable and there is frequent overlap in the terms “invasive” and “naturalized”. The evaluation of the extent of invasions by forest trees is most often very qualitative and subjective which makes overall assessments of the magnitude of the problem difficult. -
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MeetingProposal for species identification guide for cetaceans (whale and dolphins) occurring in the Indian Ocean 2013
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No results found.To guide observers, samplers, as well as fishers in order to increase the recording and reporting of data on tu and bycatch species, IOTC has published a series of Species Identification Guides. These guides were published as per the recommendations of the Working Party on Ecosystems and Bycatch and the Scientific Committee, IOTC has developed Identification guides for marine turtles, billfishes, seabirds, and sharks and rays that maybe incidentally caught or otherwise interact with IOTC fisheri es targeting tu and tu-like species in the Indian Ocean. Species Identification Guide for tu and tu like species is being developed and will be published soon. There is no immediate plan to publish a guideline for cetaceans which are considered to important conflict with the tu fisheries.
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