Central american biodiversity, 

Автор: Ingo S. Wehrtmann; Jorge Cort?s
Название: Marine Biodiversity of Costa Rica, Central America
ISBN: 9400789440 ISBN-13(EAN): 9789400789449
Издательство: Springer
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Описание: Life began in the sea, and even today most of the deep diversity of the planet is marine. This is often forgotten, especially in tropical countries like Costa Rica, renowned for their rain forests and the multitude of life forms found therein. Thus this book focusing on marine diversity of Costa Rica is particularly welcome. How many marine species are there in Costa Rica? The authors report a total of 6,777 species, or 3. 5% of the world’s total. Yet the vast majority of marine species have yet to be formally described. Recent estimates of the numbers of species on coral reefs range from 1–9 million, so that the true number of marine species in Costa Rica is certainly far higher. In some groups the numbers are likely to be vastly higher because to date they have been so little studied. Only one species of nematode is reported, despite the fact that it has been said that nematodes are the most diverse of all marine groups. In better studied groups such as mollusks and crustaceans, reported numbers are in the thousands, but even in these groups many species remain to be described. Indeed the task of describing marine species is daunting – if there really are about 9 million marine species and Costa Rica has 3. 5% of them, then the total number would be over 300,000. Clearly, so much remains to be done that new approaches are needed. Genetic methods have en- mous promise in this regard.

Автор: Sanchez Rafael A
Название: Politics of Central American Integration
ISBN: 0415621593 ISBN-13(EAN): 9780415621595
Издательство: Taylor&Francis
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Описание: This book charts the key stages of Central American integration and demonstrates the advances and limitations of governments cooperating at a level of integration that goes beyond the confines of the nation-state.

Автор: Joyce
Название: Central American and West Indian Archaeology
ISBN: 1108063756 ISBN-13(EAN): 9781108063753
Издательство: Cambridge Academ
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Описание: The British anthropologist and archaeologist Thomas Athol Joyce (1878-1942) made American archaeology more accessible to the general reader. This well-illustrated textbook, first published in 1916, examines archaeological remains from modern-day Nicaragua, Costa Rica, Panama and the West Indies to reveal aspects of their early cultures and societies.