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dc.contributor.author
Freilij, Damian
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dc.contributor.author
Larrea Alcazar, Daniel
dc.contributor.author
Lopez, Pablo Ramiro
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dc.contributor.author
Velarde Simonini, Fernando
dc.contributor.author
Naoki, Kazuya
dc.contributor.author
Bessega, Cecilia Fabiana
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dc.date.available
2024-02-02T10:57:02Z
dc.date.issued
2023-03
dc.identifier.citation
Freilij, Damian; Larrea Alcazar, Daniel; Lopez, Pablo Ramiro; Velarde Simonini, Fernando; Naoki, Kazuya; et al.; Environmental gradualism explains variation in pollination systems of columnar cacti: Phylogenetic and trait evolution analyses; Wiley Blackwell Publishing, Inc; Global Ecology and Biogeography; 32; 6; 3-2023; 1015-1029
dc.identifier.issn
1466-822X
dc.identifier.uri
http://hdl.handle.net/11336/225527
dc.description.abstract
Aim: The geographical dichotomy hypothesis (GDH) states several flowering plant groups have specialized pollination systems in tropical areas where resources are more reliable and pollinator communities tend to be more stable, than in extratropical areas. Our main goal was to understand the scope of the GDH and/or gradual environmental variation considering the evolutionary history of the pollination traits. Location: Neotropical tropics and adjacent extratropics. Major taxa studied: Columnar cacti. Methods: Using a database composed of ~54 columnar cacti species (31.7% of the global columnar cactus species), four complex traits were analysed: pollination syndromes, reproductive systems, type of anthesis, and duration of anthesis. We conducted generalized linear models (GLMs), phylogenetic regressions, evolutionary trait optimization, and multivariate models with 19 bioclimatic variables and potential evapotranspiration. Results: Weak phylogenetic signal was detected for all traits, giving consistent results between GLMs and phylogenetic regression analysis. The pollination syndrome and duration of anthesis varied with latitude, in contrast to the reproductive system and the type of anthesis. In the Southern Hemisphere, the pollinators were more diverse and the duration of anthesis was longer. Different evolutionary paths between hemispheres were detected and optimization showed a complex pattern in the evolution of traits, suggesting high homoplasy with multiple transformations by convergence and/or parallelism. The environmental models showed thermic seasonality may be at the core of the latitudinal variation of the pollination system. Main conclusions: We did not detect a geographical dichotomy in pollination systems of the cacti, but rather a gradual change in different pollination attributes. Therefore, instead of a GDH, we propose an environmental gradient hypothesis (EGH). Environmental variables may be explaining the variation detected in pollination system traits by conditioning floral properties (morphology, phenology), diversity and distribution of pollinators, and/or coevolution occurrence. The complexity implied in these traits is consistent with high homoplasy levels and a differential evolutionary history between the hemispheres.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARID ENVIRONMENTS
dc.subject
CACTACEAE
dc.subject
COLUMNAR CACTI
dc.subject
ENVIRONMENTAL GRADIENT
dc.subject
PHYLOGENETIC SIGNAL
dc.subject
PLANT–POLLINATOR INTERACTIONS
dc.subject
TRAIT EVOLUTION
dc.subject.classification
Biología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Environmental gradualism explains variation in pollination systems of columnar cacti: Phylogenetic and trait evolution analyses
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-02-01T15:44:33Z
dc.journal.volume
32
dc.journal.number
6
dc.journal.pagination
1015-1029
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Freilij, Damian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Larrea Alcazar, Daniel. Universidad Mayor de San Andrés; Bolivia
dc.description.fil
Fil: Lopez, Pablo Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Mayor de San Andrés; Bolivia
dc.description.fil
Fil: Velarde Simonini, Fernando. Universidad Mayor de San Andrés; Bolivia
dc.description.fil
Fil: Naoki, Kazuya. Universidad Mayor de San Andrés; Bolivia
dc.description.fil
Fil: Bessega, Cecilia Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
dc.journal.title
Global Ecology and Biogeography
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1111/geb.13663
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/geb.13663
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