Alex da Silva Barbosa

Phytochemical Screening and Betaxanthines of Pilosocereus catingicola (Gürke) Byles & Rowley Subsp. salvadorensis (Werderm.) Zappi (Cactaceae)

Rodrigo Garcia Silva Nascimento, Ana Paula Pereira do Nascimento, Fabiana dos Anjos Barbosa, João Henrique Constantino Sales Silva & Alex da Silva Barbosa · Journal of Experimental Agriculture International · 2020

In the semiarid region of northeastern Brazil, we find several cacti that are very important for the regional fauna and flora, including the “facheiro” (Pilosocereus catingicola (Gürke) Byles & Rowley subsp. salvadorensis (Werderm.) Zappi, a species that belongs to this botan...

Open access Research Article 10.9734/jeai/2020/v42i230471

Diversity and Structure of Adult and Regenerating Arbor Component in Forest ‘Submontana’, Paraíba-Brazil

José Nailson Barros Santos, Robson Luis Silva de Medeiros, Tales Emanuel Duarte Santos, Adamastor Pereira Barros, Ezequias Junior Borges Lopes de Oliveira, Fernando Antônio da Silva Fernande, Maria José Araújo Wanderley & Alex da Silva Barbosa · Journal of Experimental Agriculture International · 2018

The objective of this research was to study the diversity and similarity  profiles  of  vegetal  species  from adult  and  regenerating  arboreal  component  in  ‘submontana’ forest  area, evaluating the modulation of the effective numbers of vegetal species on the different stra...

Open access Research Article 10.9734/JEAI/2018/42854