FLORISTICA Y ESTRUCTURA FITO-SOCIOLÓGICA COMPARATIVA DEL ESTRATO ARBOREO Y ARBUSTIVO EN ÁREAS DE CAATINGA Y MATA ATLÁNTICA, PARAÍBA, BRASIL.

The I International Field Symposium on Biogeography gathered researchers from Brazil, Spain, Mexico and Argentina institutions in the period of 8 trough 14 of september of 2015, in João Pessoa and Cabaceiras/Brazil. At the time, phytosociological data were collected in the Atlantic Rainforest and Caatinga areas. The obtained results, although insufficient to respond to several questions about these biomes, are promising, to which we highlight the identification of differentiated floristic groups, especially in the Caartinga, in function of local conditions, linked to geomorphological and pedological aspects, that allows the existence of high hydric requirement species in a mostly semiarid climatic environment. The event also helped to intensify the rapprochement between iberoamerican institutions and researchers that dedicate themselves for the Biogeographical studies, creating opportunities for the development of international researches [ABSTRACT FROM AUTHOR]