For a naturalist and limnologist, the Pantanal has the extreme fascination of an "ultima Thule" ofundisturbed and little known wilderness. The scientific world at large is almost unaware of its richness. In an age when scientific research is overstretched because of lack of funds and the hands are full of urgentconservationtasks, it is the amateurtourist who unveils the beauty and the interestof this largest wetland ofthe world. I had the privilege of an outsider, well enough familiarized with Brazil, its language and scientific life, but independent enough of the daily chores of a local academic career. For nearly 20 years I have been a faithful sci entific tourist to this subcontinent. My academic liberty gave me the unique opportunity to try to synthesize in English the knowledge about Brazilian environments little known abroad. My first suchendeavourhas been"Soore tama - the Atlantic Rain Forest of Brazil". Dealing now with the Pantanal, I wish to pay tribute to the many Brazilian colleagues who under dire and often precarious conditions have advanced the knowledge related to the Pan tanal. By reviewing their many reports and papers written in Portuguese and bringing them to the knowledge of the international scientific community, I believe that I am doing a useful service. First of all, I have to thank Prof. Vera Lucia Imperatriz Fonseca, the Head of the Department of General Ecology at the University of Sao Paulo, for providingme during the years, the academic basefrom which I couldoperate.

Inhalt
2. Discovery.- 3. Limits and size.- 4. Geological data.- 5. Local geomorphological terminology.- 6. The climate.- 7. River hydrology.- 8. The Amazonian connection.- 9. The flood regime.- 10. The Pantanal lakes.- 11. Hydrochemistry.- 12. Soils.- 13. How many Pantanals?.- 14. Regional connections.- 15. Introduction to the biology of the Pantanal.- 16. Phytogeography.- 17. Aquatic vegetation.- 18. Terrestrial vegetation.- 19. Fire in the Pantanal.- 20. Zoogeography.- 21. Aquatic meiofauna.- 22. Macrobenthos.- 23. Ichthyofauna.- 24. Pantanal fisheries.- 25. The herpetofauna.- 26. The avifauna.- 27. The mammals.- 28. The humans in the Pantanal.- 29. Environmental worries.- 30. Nature conservancy and ecotourism.- Taxonomic glossary.- Geographical and ethnographic index.