Bacterial community in biological soil crusts from a Brazilian semiarid region under desertification process oleh José Israel Pinheiro, Paulo Furtado Mendes Filho, Kaio Gráculo Vieira Garcia, Jarlane Viana Moreira, Danilo Ferreira da Silva, Ademir Sérgio Ferreira de Araújo, Jay Prakash Verma, Vania Maria Maciel Melo, Arthur Prudêncio de Araujo Pereira