| Date | May 2017 | Marks available | 2 | Reference code | 17M.1.SL.TZ0.3 |
| Level | Standard Level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Identify | Question number | 3 | Adapted from | N/A |
Question
Figure 4: Photographs showing examples of species found in Brazil
With reference to the species listed in the resource booklet, Figure 4, identify two factors that may have contributed to their status given on the IUCN Red List.
Markscheme
reduction in population size;
population size / numbers of mature individuals / number of individuals able to reproduce;
geographical range / area of occupancy (ie where species are normally found) / extent of occurrence (boundary line that can be drawn around sites that the species occupies);
reduction in number of locations (the species is found in);
degree of fragmentation (eg via road or urban development);
quality of habitat / loss of habitat / habitat degradation;
probability/high risk of extinction.
Do not accept “availability of food/water/shelter”.
Do not accept “deforestation/hunting/low reproductive potential/habitat threatened” unless a link is made to the IUCN factors, as listed above.
[2 max]
Examiners report
In general candidates did not answer this question well. The majority were unable to link the threats they gave to the IUCN Red List criteria e.g. how deforestation is linked to habitat loss and increase fragmentation of the habitat; or how hunting can result in a reduction in population size and change in the geographical range of the species.
