2 Works

Data from: Individual and interactive effects of chronic anthropogenic disturbance and rainfall on taxonomic, functional and phylogenetic composition and diversity of extrafloral nectary-bearing plants in Brazilian Caatinga

Xavier Arnan, Carlos Silva, Daniela Reis, Fernanda Oliveira, Talita Câmara, Elâine Ribeiro, Alan Andersen & Inara Leal
Chronic anthropogenic disturbance (CAD) and climate change represent two of the major threats to biodiversity globally, but their combined effects are not well understood. Here we investigate the individual and interactive effects of increasing CAD and decreasing rainfall on the composition and taxonomic (TD), functional (FD) and phylogenetic diversity (PD) of plants possessing extrafloral nectaries (EFNs) in semi-arid Brazilian Caatinga. EFNs attract ants that protect plants against insect herbivore attack and are extremely prevalent in...

Drought-induced reductions in plant defenses

Talita Câmara, Daniela Queiroz De Assis Reis, Xavier Arnan, Fernanda Maria Pereira De Oliveira, Emilia Cristina Pereira De Arruda & Inara Roberta Leal
Extrafloral nectaries (EFNs) are anti-herbivory defense-related glands. We measured morphological and anatomical EFN traits in Pityrocarpa moniliformis trees along a rainfall gradient in Caatinga dry forest. We observed a reduction in structural EFN traits as rainfall decreased. We conclude that this reduction is a cost-saving strategy, probably mediated by ants.

Registration Year

  • 2021

Resource Types

  • Dataset


  • Universidade de Pernambuco
  • Federal University of Pernambuco
  • Charles Darwin University