title: Ecology. Keystones in a tangled bank.
authors.affiliation: Department of Animal Biology, State University of Campinas-UNICAMP, Campinas SP, Brazil. thomasl@unicamp.br
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Lewinsohn
authors.forename: Luciano
authors.initials: L
authors.lastname: Cagnolo
mesh_terms: D000383:Agriculture; D000818:Animals; D005075:Biological Evolution; D058448:Biota; D017753:Ecosystem; D020387:Food Chain; D007313:Insecta; D018521:Plant Physiological Phenomena; D010944:Plants; D054817:Pollination; D013559:Symbiosis