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Objetivou-se caracterizar a fenologia de quarto especies arboreas de ocorrencia em area de caatinga na regiao do Semiarido paraibano. Para tanto, dez individuos de cada uma das especies escolhidas: angico ( Anadenanthera colubrina (Vell.) Brenan) – Fabaceae-Mimosoideae; aroeira ( Myracrodruon urundeuva Allemao) – Anacardiaceae; cumaru ( Amburana cearensis (Allemao) A.C. Smith) – Fabaceae e oiticica ( Licania rigida Benth) – Chrysobalanaceae, foram marcados e numerados sequencialmente em uma area de caatinga situada na regiao de Pombal - PB. Quinzenalmente foram realizadas avaliacoes para a identificacao das fenofases de brotamento, floracao, frutificacao e dispersao de diasporos ou sementes. As especies Anadenanthera colubrina, Myracrodruon urundeuva e Amburana carensis sao classificadas como especies deciduas, apresentando abscisao das folhas entre setembro e dezembro (estacao seca) e a rebrota entre janeiro e agosto (estacao chuvosa) na regiao do semiarido paraibano, enquanto a Licania rigida e classificada como uma especie perene, por nao apresentar o fenomeno de abscisao foliar ao longo do periodo de avaliacao. Todas as especies estudadas apresentam dispersao de seus diasporos ainda na estacao seca. A especie Anadenanthera colubrina apresenta diferentes picos nas fenofases de floracao ao longo do ano, com frutificacao e dispersao de sementes ocorrendo parte na estacao chuvosa e parte na estacao seca da regiao. Os padroes fenologicos das quatro especies estudadas sao distinguidos de acordo com a distribuicao temporal dos eventos climaticos. Phenology of four arboreal species of the Caatinga in Semiarid of Paraiba Abstract: The point of this paper was suppling necessary information to future of botany and ecology studies, in which it concerns the behavior of arboreal species. For so much, ten individuals of each one of the chosen species: “angico” (Anadenanthera colubrina (Vell.) Brenan) – Fabaceae-Mimosoideae; “aroeira” (Myracrodruon urundeuva Allemao) – Anacardiaceae; “cumaru” (Amburana cearensis (Allemao) A.C. Smith) – Fabaceae e “oiticica” (Licania rigida Benth) – Chrysobalanaceae, were marked and numbered sequentially in an area of Caatinga located in Pombal’s region, Paraiba. Biweekly were made evaluations for the identification of the spring up phenophases, leaf formation, flowering, fructification and seeds dispersion. The Anadenanthera colubrina, M. urundeuva Amburana carens and are classified as deciduous species, with leaf abscission between September and December (dry season) and regrowth between January and August (rainy season) in the semiarid region of Paraiba, while the Licania rigida is classified as a perennial species, not to present the phenomenon of leaf abscission during the evaluation period. All species have their diaspores dispersed even in the dry season. The species Anadenanthera colubrina has different peaks in phenological phases of flowering throughout the year, with fruiting and seed dispersal occurring in the rainy and dry season of the region. The phenology of four species aredistinguished according to the temporal distribution of weather events.

Fenologia de quatro espécies arbóreas da Caatinga no Semiárido paraibano