• Flavia Regina Capellotto Costa Instituto Nacional de Pesquisas da Amazônia https://orcid.org/0000-0002-9600-4625
  • Jansen Zuanon Instituto Nacional de Pesquisas da Amazônia
  • Fabricio Baccaro Universidade Federal do Amazonas
  • Juliana Schietti Universidade Federal do Amazonas
  • Juliana Menger Instituto Nacional de Pesquisas da Amazônia
  • Jorge Souza Instituto Nacional da Mata Atlântica
  • Gabriel Costa Borba Programa de Pós-Graduação em Ecologia – INPA
  • Erick Lavado Esteban Programa de Pós-Graduação em Ciências de Florestas Tropicais – INPA
  • Vinicius Bertin Programa de Pós-Graduação em Ciências de Florestas Tropicais – INPA
  • Caian Gerolamo Programa de Pós-Graduação em Botânica, USP
  • Anselmo Nogueira Universidade Federal do ABC
  • Carolina Volkmer de Castilho EMBRAPA Roraima




community ecology, functional ecology, LTER, long-term ecological sites


Central Amazon has been subjected to a higher frequency of extreme climatic events, such as very dry or very wet years, in the last decades. Here, we report a 20-year monitoring of 6 biological groups over 100 km2 of typical terra-firme forest at Ducke Forest Reserve, Manaus. Most assemblages had a decrease in abundance (9 – 35 %) and richness (8 – 25 %) along time, with some taxonomic and functional reorganization. Taxonomic and functional composition changes along time were more extensive in the valleys for trees and ants, and in first-order streams for fish; while bird and small trees had different patterns of composition change in valleys and plateaus. Although the signal of change was not congruent across all assemblages, patterns indicate that the forest and streams are becoming more dynamic as the hydrological cycle intensifies due to climate changes, and these new environments are already filtering species, at least in some well monitored taxonomic groups. Our data, in combination with other studies, suggest that riparian areas in the valleys are hydrological refuges during droughts, although also susceptible to disturbances induced by excessive precipitation and windstorms. In face of the importance of valleys as refuge, its sensibility and the unknown effects of potential migrations from higher topographic areas due to climate change, the conservation of large and extensive riparian areas seems to be of surmount importance to the future of Amazonian biodiversity.

Author Biographies

Flavia Regina Capellotto Costa, Instituto Nacional de Pesquisas da Amazônia

Coordenação de Pesquisas em Biodiversidade

Jansen Zuanon, Instituto Nacional de Pesquisas da Amazônia

Coordenação de Pesquisas em Biodiversidade


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