| | 3.18 Summary of key groups and species (Site not responding. Last check: 2007-10-18) |
 | | Many representatives of this category are critically scarce: 10 of the 11 vulnerable or endangered taxa in Table 27 answer to the profile of K-selected species. |
 | | Finally, where there are solid indications that a species or population is common or abundant, the conditions will obtain for utilization for the maximum collective benefit, subject to the principle of sustainable harvest, constant monitoring and any necessary changes in order to conserve resource productivity. |
 | | The available information on whistling ducks (Dendrocygna) includes aspects of its basic natural history, hunting season data, and the results of an ongoing ringing programme in Venezuela. |
| www.fao.org /docrep/T0750E/t0750e0q.htm (3597 words) |