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dc.contributor.author
Malizia, Agustina
dc.contributor.author
Easdale, Tomás
dc.contributor.author
Grau, Hector Ricardo
dc.date.available
2015-05-22T20:01:31Z
dc.date.issued
2013-09-17
dc.identifier.citation
Malizia, A.; Easdale, T.a.; Grau, H.r.; Rapid structural and compositional change in an old-growth subtropical forest: using plant traits to identify probable drivers; Public Library Science; Plos One; 8; 2013-8; 1-13; http://dx.doi.org/10.1371/journal.pone.0073546;
dc.identifier.issn
1932-6203
dc.identifier.uri
http://hdl.handle.net/11336/536
dc.description.abstract
Recent studies have shown directional changes in old-growth tropical forests, but changes are complex and diverse, and their drivers unclear. Here, we report rapid net structural and compositional changes in an old-growth subtropical forest and we assess the functional nature of these changes to test hypothetical drivers including recovery from past disturbances, reduction in ungulate browsing, CO2 fertilization, and increases in rainfall and temperature. The study relies on 15 years of demographic monitoring within 8 ha of subtropical montane forest in Argentina. Between 1992 and 2007, stem density markedly increased by 50% (12 stems ha21 y21) and basal area by 6% (0.13 m2 ha21 y21). Increased stem density resulted from enhanced recruitment of understory treelets (Piper tucumanum, Eugenia uniflora, Allophylus edulis) into small size classes. Among 27 common tree species, net population growth was negatively correlated with maximum tree size and longevity, and positively correlated with leaf size and leaf nutrient content, especially so when initial population size was controlled for. Changes were inconsistent with predictions derived from past disturbances (no increase in shade-tolerant or long-lived late-succesional species), rainfall or temperature increase (no increase in evergreen or deciduous species, respectively). However, the increase in nutrient-rich soft-leaved species was consistent with exclusion of large herbivores two decades before monitoring started; and CO2 fertilization could help explain the disproportionate increase in small stems. Reductions in populations of large vertebrates have been obse rved in many otherwise undisturbed tropical forests, and our results suggest they can have important structural and functional repercussions in these forests.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Public Library Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Climate Change
dc.subject
Forest Dynamics
dc.subject
Herbivory
dc.subject
Permanent Plots
dc.subject
Yungas
dc.subject.classification
Ciencias Naturales y Exactas
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
Ecología
dc.title
Rapid structural and compositional change in an old-growth subtropical forest: using plant traits to identify probable drivers
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
8
dc.journal.number
9
dc.journal.pagination
1-13
dc.journal.pais
Estados Unidos
dc.journal.ciudad
San Francisco
dc.description.fil
Fil: Malizia, Agustina. Universidad Nacional de Tucuman. Facultad de Cs.naturales E Instituto Miguel Lillo. Instituto de Ecologia Regional;
dc.description.fil
Fil: Easdale, Tomás.
dc.description.fil
Fil: Grau, Hector Ricardo. Universidad Nacional de Tucuman. Facultad de Cs.naturales E Instituto Miguel Lillo. Instituto de Ecologia Regional;
dc.journal.title
Plos One
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1371/journal.pone.0073546
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.plosone.org/10.1371/journal.pone.0073546
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