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| | AQUATIC PLANTS AND WETLAND WILDLIFE RESOURCES OF NIGERIA |
 | | The decline in aquatic fauna appears to be due to human population pressure and activities which include the efforts to increase crop hectarage, infrastructural developments such as dam construction, poaching and environmental pollution. |
 | | Thus in the management of an aquatic system, the animal and plant populations, and the individual numbers of each trophic level, and between the trophic levels, the habitat and their carrying capacities must be monitored before a sound management strategy can be adopted for the maintenance of a healthy aquatic system. |
 | | Aquatic birds are also very useful models in the study of malaria parasites, sexual behaviour, endocrinology, and for the extraction of hormones from pituitary, thyroid and sexual glands (Dorst, 1974). |
| www.fao.org /DOCREP/005/T3660E/T3660E04.htm (7273 words) |
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