review of non-cites amphibia species that are known or likely to be ...
review of non-cites amphibia species that are known or likely to be ...
review of non-cites amphibia species that are known or likely to be ...
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Table 3. Num<strong>be</strong>r <strong>of</strong> <strong>amphibia</strong>n <strong>species</strong> within each <strong>of</strong> the IUCN Red List categ<strong>or</strong>ies.<br />
Source: IUCN (2007).<br />
IUCN Red<br />
List Categ<strong>or</strong>y<br />
Num<strong>be</strong>r <strong>of</strong><br />
Amphibian <strong>species</strong><br />
CR 441<br />
EN 737<br />
VU 630<br />
NT 369<br />
LC 2277<br />
DD 1426<br />
EW 1<br />
EX 34<br />
Total 5915<br />
The IUCN Red List also provides a classification <strong>of</strong> causes <strong>of</strong> <strong>species</strong> decline. Assess<strong>or</strong>s <strong>are</strong><br />
asked <strong>to</strong> indicate the threats <strong>that</strong> triggered the listing <strong>of</strong> the taxon concerned at the finest level<br />
possible. These threats could <strong>be</strong> in the past and/<strong>or</strong> present and/<strong>or</strong> future, using a timeframe<br />
<strong>of</strong> three generations <strong>or</strong> ten years, whichever is the longer (not exceeding 100 years in the<br />
future).<br />
Threats <strong>are</strong> subdivided in a hierarchical system. F<strong>or</strong> the purposes <strong>of</strong> this rep<strong>or</strong>t, threat<br />
num<strong>be</strong>r 3 (Harvesting) is the most relevant one. It is subdivided in the following way:<br />
3. Harvesting [hunting/gathering]<br />
3.1. Food<br />
3.1.1. Subsistence use/local trade<br />
3.1.2. Sub-national/national trade<br />
3.1.3. Regional/international trade<br />
3.2. Medicine<br />
3.2.1. Subsistence use/local trade<br />
3.2.2. Sub-national/national trade<br />
3.2.3. Regional/international trade<br />
3.3. Fuel<br />
3.3.1. Subsistence use/local trade<br />
3.3.2. Sub-national/national trade<br />
3.3.3. Regional/international trade<br />
3.4. Materials<br />
3.4.1. Subsistence use/local trade<br />
3.4.2. Sub-national/national trade<br />
3.4.3. Regional/international trade<br />
3.5. Cultural/scientific/leisure activities<br />
3.5.1. Subsistence use/local trade<br />
3.5.2. Sub-national/national trade<br />
3.5.3. Regional/international trade<br />
3.6. Other<br />
3.7. Un<strong>known</strong><br />
1.3. THE IMPACT OF TRADE ON AMPHIBIANS<br />
Although habitat loss and degradation, pollution and the fungal disease chytridiomycosis <strong>are</strong><br />
considered <strong>to</strong> <strong>be</strong> the greatest threats <strong>to</strong> <strong>amphibia</strong>ns at present, over-harvesting and trade have<br />
also <strong>be</strong>en identified as maj<strong>or</strong> causes <strong>of</strong> decline f<strong>or</strong> a num<strong>be</strong>r <strong>of</strong> <strong>species</strong> (Gibbons et al., 2000,<br />
Young et al., 2004; Gascon et al., 2007; IUCN et al., 2007).<br />
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