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Macro-Climatic Distribution Limits Show Both Niche Expansion and Niche Specialization among C4 Panicoids

Aagesen, Lone ; Biganzoli, Fernando ; Bena, Julia ; Godoy-Bürki, Ana C ; Reinheimer, Renata ; Zuloaga, Fernando O Feltus, Frank Alexander

PloS one, 2016, Vol.11 (3), p.e0151075 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Macro-Climatic Distribution Limits Show Both Niche Expansion and Niche Specialization among C4 Panicoids
Autor: Aagesen, Lone ; Biganzoli, Fernando ; Bena, Julia ; Godoy-Bürki, Ana C ; Reinheimer, Renata ; Zuloaga, Fernando O
Feltus, Frank Alexander
Assuntos: Adaptation ; Aridity ; Biogeography ; Biology and Life Sciences ; Chenopodiaceae ; Climate ; Climatic analysis ; Climatic evolution ; Climatic extremes ; Computer and Information Sciences ; Distribution patterns ; Drought ; Droughts ; Earth Sciences ; Ecology and Environmental Sciences ; Evolution ; Evolution, Molecular ; Expansion ; Grasses ; Growing season ; Habitats ; Mean temperatures ; Panicum ; Photosynthesis ; Phylogeny ; Poaceae ; Poaceae - metabolism ; Poaceae - physiology ; Rain ; Research and Analysis Methods ; Specialization ; Species ; Studies ; Temperature ; Understory ; Vegetation
É parte de: PloS one, 2016, Vol.11 (3), p.e0151075
Notas: Competing Interests: The authors have declared that no competing interests exist.
Conceived and designed the experiments: LA FB. Analyzed the data: LA FB JB RR. Contributed reagents/materials/analysis tools: LA JB ACGB. Wrote the paper: LÅ RR FOZ.
Descrição: Grasses are ancestrally tropical understory species whose current dominance in warm open habitats is linked to the evolution of C4 photosynthesis. C4 grasses maintain high rates of photosynthesis in warm and water stressed environments, and the syndrome is considered to induce niche shifts into these habitats while adaptation to cold ones may be compromised. Global biogeographic analyses of C4 grasses have, however, concentrated on diversity patterns, while paying little attention to distributional limits. Using phylogenetic contrast analyses, we compared macro-climatic distribution limits among ~1300 grasses from the subfamily Panicoideae, which includes 4/5 of the known photosynthetic transitions in grasses. We explored whether evolution of C4 photosynthesis correlates with niche expansions, niche changes, or stasis at subfamily level and within the two tribes Paniceae and Paspaleae. We compared the climatic extremes of growing season temperatures, aridity, and mean temperatures of the coldest months. We found support for all the known biogeographic distribution patterns of C4 species, these patterns were, however, formed both by niche expansion and niche changes. The only ubiquitous response to a change in the photosynthetic pathway within Panicoideae was a niche expansion of the C4 species into regions with higher growing season temperatures, but without a withdrawal from the inherited climate niche. Other patterns varied among the tribes, as macro-climatic niche evolution in the American tribe Paspaleae differed from the pattern supported in the globally distributed tribe Paniceae and at family level.
Editor: United States: Public Library of Science
Idioma: Inglês

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Macro-Climatic Distribution Limits Show Both Niche Expansion and Niche Specialization among C4 Panicoids

Aagesen, Lone ; Biganzoli, Fernando ; Bena, Julia ; Godoy-Bürki, Ana C ; Reinheimer, Renata ; Zuloaga, Fernando O Feltus, Frank Alexander

United States: Public Library of Science

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