Morphological consequences of climate change for resident birds in intact Amazonian rainforest.
Sci Adv
; 7(46): eabk1743, 2021 Nov 12.
Article
em En
| MEDLINE
| ID: mdl-34767440
ABSTRACT
Warming from climate change is expected to reduce body size of endotherms, but studies from temperate systems have produced equivocal results. Over four decades, we collected morphometric data on a nonmigratory understory bird community within Amazonian primary rainforest that is experiencing increasingly extreme climate. All 77 species showed lower mean mass since the early 1980snearly half with 95% confidence. A third of species concomitantly increased wing length, driving a decrease in masswing ratio for 69% of species. Seasonal precipitation patterns were generally better than temperature at explaining morphological variation. Short-term climatic conditions affected all metrics, but time trends in wing and masswing remained robust even after controlling for annual seasonal conditions. We attribute these results to pressures to increase resource economy under warming. Both seasonal and long-term morphological shifts suggest response to climate change and highlight its pervasive consequences, even in the heart of the world's largest rainforest.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Sci Adv
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Estados Unidos