Functional Extinction of Birds Drives Rapid Evolutionary Changes in Seed Size

Author:

Galetti Mauro1,Guevara Roger2,Côrtes Marina C.1,Fadini Rodrigo3,Von Matter Sandro4,Leite Abraão B.1,Labecca Fábio1,Ribeiro Thiago1,Carvalho Carolina S.5,Collevatti Rosane G.5,Pires Mathias M.6,Guimarães Paulo R.6,Brancalion Pedro H.7,Ribeiro Milton C.1,Jordano Pedro8

Affiliation:

1. Departamento de Ecologia, Universidade Estadual Paulista, Rio Claro, São Paulo, 13506-900, Brazil.

2. Instituto de Ecología, A. C. Red de Biología Evolutiva, Carretera Antigua a Coatepec 351, Xalapa, Veracruz, 91070, Mexico.

3. Instituto de Biodiversidade e Florestas, Universidade Federal do Oeste do Pará, Santarém, Pará, 68035-110, Brazil.

4. Departamento de Biologia Animal, Universidade Federal Rural do Estado do Rio de Janeiro, Seropédica, Rio de Janeiro, 23.897-000, Brazil.

5. Laboratório de Genética & Biodiversidade, Universidade Federal de Goiás, Goiânia, Goiás, 74001-970, Brazil.

6. Departamento de Ecologia, Universidade de São Paulo, São Paulo, São Paulo, 05508-90, Brazil.

7. Departamento de Ciências Florestais, Escola Superior de Agricultura "Luiz de Queiroz," Universidade de São Paulo, Piracicaba, São Paulo, 13418-900, Brazil.

8. Integrative Ecology Group, Estación Biológica de Doñana, EBD-CSIC, Sevilla, E-41092, Spain.

Abstract

The Birds and the Seeds When species are lost from ecosystems through local extinction, the pattern of ecological interactions changes. Galetti et al. (p. 1086 ) show how the loss of large fruit-eating birds from tropical forest fragments in Brazil affects the reduction of seed size in a palm species. A data set was compiled that consisted of >9000 seeds measured in 22 populations over a large area of Atlantic rainforest, including seven areas where large-seed dispersers (toucans, cracids, and large cotingas) were extinct and 15 areas where they are still common.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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