Cited by 251Avian ecology and behaviorEcology and Vegetation Dynamics StudiesWildlife Ecology and Conservation

Local Extinctions of Terrestrial Insectivorous Birds in a Fragmented Landscape near Manaus, Brazil

Stratford, Jeffrey A., Stouffer, Philip C.·1999·Conservation Biology

Abstract

Abstract: We examined the distributions of nine species of terrestrial insectivorous birds in 4‐ to 14‐year‐old rainforest fragments north of Manaus, Brazil. We surveyed 11 fragments of 1, 10, and 100 ha, 95 ha of secondary vegetation, and nine continuous forest plots (controls) of 1–100 ha. We augmented standard spot‐mapping with extensive playback surveys. The fragments had been sampled with mist nets before isolation, so our results could be compared with the pre‐isolation distribution. For the nine species, there were 55 cases of local extinction in the 11 fragments between about 1 year after isolation and the time of our surveys. This corresponds to 74% extinction of the local populations in fragments. These extinctions occurred despite the second‐growth connection of some fragments to continuous forest as little as 70 m away. Three apparent colonization events by species not detected before isolation also occurred, but these may also reflect inadequate sampling before isolation. Our comparison of fragments and similar‐sized control plots in continuous forest showed an area effect on species richness in both fragments and control plots, but fragments had fewer species than control plots of equal size. In a fragmented Amazonian landscape, the full suite of terrestrial insectivores would persist in the short term only in large fragments ( > 100 ha), although much larger areas are probably necessary for the long‐term persistence of their populations.

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Crossref · 10.1046/j.1523-1739.1999.98494.x

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  • In fragmented forests in Costa Rica and Brazil, insectivores suffered greater declines and local extinctions than other avian groups.

    “in fragmented forests in Costa Rica and Brazil, insectivores suffered greater declines and local extinctions than other avian groups (102–104).”

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Authors
Stratford, J. A., & Stouffer, P. C.
Affiliations
Instituto Nacional de Pesquisas da Amazônia (BR)
Corresponding author
Stratford, Jeffrey A.
Venue
Conservation Biology
Publisher
Wiley
Published
1999-12
Volume
13
Issue
6
Pages
1416-1423
ISSN
  • 0888-8892 (ISSN-L)
  • 1523-1739
OpenAlex
W2096430647
Cited by
251
References
50
Citations by year
2026: 3 · 2025: 1 · 2024: 3 · 2023: 10 · 2022: 7 · 2021: 6 · 2020: 15 · 2019: 2 · 2018: 16 · 2017: 10 · 2016: 15 · 2015: 12 · 2014: 8 · 2013: 10 · 2012: 12
FWCI
5.02
Type
journal article
Language
en
Open access
closed
Locations
  • Conservation Biology (publishedVersion)
  • Civil War Book Review (submittedVersion)
Topics
  • Physical Sciences › Environmental Science › Ecology › Avian ecology and behavior
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Ecology and Vegetation Dynamics Studies
  • Physical Sciences › Environmental Science › Ecology › Wildlife Ecology and Conservation
Keywords
local extinction, forest fragmentation, Amazon rainforest, secondary forest, fragment size, species richness, colonization, playback surveys, Manaus, forest isolation, population persistence

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