Soil δ15N spatial distribution is primarily shaped by climatic patterns in the semiarid Caatinga, Northeast Brazil - Brunello, Alexandre Tadeu; Nardoto, Gabriela Bielefeld; Santos, Fábio Luís S.; Sena-Souza, João Paulo; Quesada, Carlos Alberto Nobre; Lloyd, Jonathan James; Domingues, Tomas Ferreira (Science of The Total Environment, 2024)