Competition for water and rapid exclusion of an island endemic by a pantropical species in a tropical climate

Gomes, Anabele Stefânia; Callaway, Ragan M.; Rabelo, Bruno S.; Petry, Graziela Luciana; Barbosa, Eduardo M.; Borghetti, Fabian

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Campo DC	Valor	Idioma
dc.contributor.author	Gomes, Anabele Stefânia	-
dc.contributor.author	Callaway, Ragan M.	-
dc.contributor.author	Rabelo, Bruno S.	-
dc.contributor.author	Petry, Graziela Luciana	-
dc.contributor.author	Barbosa, Eduardo M.	-
dc.contributor.author	Borghetti, Fabian	-
dc.date.accessioned	2024-05-29T11:32:48Z	-
dc.date.available	2024-05-29T11:32:48Z	-
dc.date.issued	2023-03-27	-
dc.identifier.citation	GOMES, Anabele S. et al. Competition for water and rapid exclusion of an island endemic by a pantropical species in a tropical climate. Oecologia, v. 201, p. 901-914, 2023. DOI: https://doi.org/10.1007/s00442-023-05352-7.	pt_BR
dc.identifier.uri	http://repositorio2.unb.br/jspui/handle/10482/48140	-
dc.language.iso	eng	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Competition for water and rapid exclusion of an island endemic by a pantropical species in a tropical climate	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Competição (Biologia)	pt_BR
dc.subject.keyword	Comunidades vegetais - Trópicos	pt_BR
dc.subject.keyword	Água - Trópicos	pt_BR
dc.identifier.doi	https://doi.org/10.1007/s00442-023-05352-7	pt_BR
dc.relation.publisherversion	https://link.springer.com/article/10.1007/s00442-023-05352-7	pt_BR
dc.description.abstract1	Water availability has major effects on community structure and dynamics globally, yet our understanding of competition for water in the tropics is limited. On the tropical Trindade Island, we explored competition for water in the context of the rapid exclusion of an endemic sedge, Cyperus atlanticus (Cyperaceae), by a pantropical, N-fixing shrub, Guilandina bonduc (Fabaceae). Guilandina patches were generally surrounded by rings of bare soil, and dead Cyperus halos commonly surrounded these bare zones. With geo-referenced measurements, we showed that Guilandina patches and bare soil zones rapidly expanded and replaced adjacent Cyperus populations. We found that soil water potentials were much lower in bare soils than soils under Guilandina or Cyperus, and that leaf water potentials of Cyperus plants were lower when co-occurring with Guilandina than when alone. When Guilandina was removed experimentally, Cyperus populations expanded and largely covered the bare soil zones. Our results indicate that when Guilandina establishes, its root systems expand beyond its canopies and these roots pull water from soils beneath Cyperus and kill it, creating bare zone halos, and then Guilandina expands and repeats the process. This scenario indicates rapid competitive exclusion and displacement of an endemic by a common pantropical species, at least in part through competition for water.	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0001-7141-265X	pt_BR
dc.contributor.affiliation	University of Brasilia, Department of Botany	pt_BR
dc.contributor.affiliation	University of Montana, Division of Biological Sciences, Wildlife Biology, and the Institute on Ecosystems	pt_BR
dc.contributor.affiliation	University of Brasilia, Department of Botany	pt_BR
dc.contributor.affiliation	University of Brasilia, Department of Botany	pt_BR
dc.contributor.affiliation	University of Brasilia, Department of Botany	pt_BR
dc.contributor.affiliation	University of Brasilia, Department of Botany	pt_BR
dc.description.unidade	Instituto de Ciências Biológicas (IB)	pt_BR
dc.description.unidade	Departamento de Botânica (IB BOT)	pt_BR
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