Biodiversity - ISSN 1488-8386 a subscription based quarterly journal

CONTRIBUTIONS (review of first three issues):



An article on Mexican tropical dry forests shows this type of forest is much less extensive and less varied biologically than rain forest but with a rich flora which provides firewood, food, medicines and other valuable products. Tropical dry forest is being rapidly reduced in Mexico and elsewhere. Conservation effort in Mexico shows that, with careful management, much of the origin a l vegetation, including 28 food-producing trees, shrubs and vines can be restored using only organic farming methods. This approach of farming shows a five fold increment of income as compared with corn cultivation alone. A series of recommendations to further these methods are given. They are designed to help reduce the dependency on cash crops, raise living standards, restore in part the original forests, reduce erosion, and preserve much of the original flora from which new food crops and medicines ma y be derived.

A review of a critically endangered life form, Hamilton's Frog, (Leiopelma hamiltoni), shows an interesting aspect of life of a primitive Frog, a Frog which has a short tail and no web between their toes. Frogs of the genus Leiopelma resemble those found in the Jurassic era. Approximately only 200 frogs remain distributed in a small area in New Zealand. Habitat destruction is probably responsible for the restricted distribution of this Frog.

An article on the Whale Shark, the largest living fish is presented; shows this Shark species is rare but is worldwide in tropical and subtropical areas. Details are given of 20 sightings in 50 years in Venezuelan waters. Records may be correlated with increased marine productivity.
   
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