wiki-archive/twiki/data/InvasiveSpecies/GISINdefinitionsMatrix.txt,v

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date 2006.03.15.00.03.47; author AnnieSimpson; state Exp;
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---++Definition Framework matrix (proposed by Kevin Thiele)
*Proposal* - we will provide a picklist of a large number of terms that people use in various databases to describe alien invasives (a shortlist is in *Table A*). These terms will include some we don't like, and the terms will not be mutually exclusive. However, we will also provide a more atomised set of terms using which providers must define what they mean by the terms they use. The term-defining concepts and terms are in *Table B* below. See also SampleDefinitions.
*Table A*
| Some terms used in databases |
|Alien |Invasive |Non-Invasive|
|Introduced | | |
|Native | | |
|Exotic | | |
|Cryptogenic | | |
|adventive | | |
|feral | | |
|foreign | | |
|naturalised | | |
*Table B*
|Elements needed to rigorously define these terms|
| Origin| |
| |Outside polygon of interest|
| |Inside polygon of interest|
| |Not relevant|
| |Not known|
| Human agent in range change?|
| |Yes|
| |No|
| |Not relevant|
| |Not known|
| |Not applicable|
| Impact | |
| |Has negative impact (at least sometimes)|
| |Does not have negative impact|
| |Not relevant|
| |Not known|
| Establishment | |
| |Established|
| |Not established|
| |Not relevant|
| |Not known|
| Geographic Range | |
| |Widespread and/or spreading|
| |Not widespread, not spreading|
| |Not relevant|
| |Not known|
| Ecological Range | |
| |Restricted to human-modified habitats|
| |Occurs in natural habitats|
| |Not relevant|
| |Not known|
-- Main.AnnieSimpson - 14 Mar 2006
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