Show simple item record Salgado-Luarte, Cristian Gianoli, Ernesto 2012-02-17T19:43:18Z 2012-02-17T19:43:18Z 2012-02-17
dc.identifier doi:10.5061/dryad.53tr05j2
dc.identifier.citation Salgado-Luarte C, Gianoli E (2012) Herbivores modify selection on plant functional traits in a temperate rainforest understory. The American Naturalist 180(2): E42-E53.
dc.description There is limited evidence regarding the adaptive value of plant functional traits in contrasting light environments. It has been suggested that changes in these traits in response to light availability can increase herbivore susceptibility. We tested the adaptive value of plant functional traits linked with carbon gain in contrasting light environments and also evaluated whether herbivores can modify selection on these traits in each light environment. In a temperate rainforest, we examined phenotypic selection on functional traits in seedlings of the pioneer tree Aristotelia chilensis growing in sun (canopy gap) and shade (forest understory) and subjected to either natural herbivory or herbivore exclusion. We found differential selection on functional traits depending on light environment. In sun, there was positive directional selection on photosynthetic rate and relative growth rate (RGR), indicating that selection favors competitive ability in a high-resource environment. Seedlings with high specific leaf area (SLA) and intermediate RGR were selected in shade, suggesting that light capture and conservative resource use are favored in the understory. Herbivores reduced the strength of positive directional selection acting on SLA in shade. We provide the first demonstration that natural herbivory rates can change the strength of selection on plant ecophysiological traits, that is, attributes whose main function is resource uptake. Research addressing the evolution of shade tolerance should incorporate the selective role of herbivores.
dc.relation.haspart doi:10.5061/dryad.53tr05j2/1
dc.relation.isreferencedby doi:10.1086/666612
dc.relation.isreferencedby PMID:22766937
dc.subject Adaptation
dc.subject Ecology: evolutionary
dc.subject Ecology: experimental
dc.subject Interactions: plant/herbivore
dc.subject Selection: natural
dc.subject Temperate forest
dc.subject Plant
dc.title Data from: Herbivores modify selection on plant functional traits in a temperate rainforest understory
dc.type Article *
dwc.ScientificName Aristotelia chilensis
dc.contributor.correspondingAuthor Salgado-Luarte, Cristian
prism.publicationName The American Naturalist
dryad.dansTransferDate 2017-09-26T12:32:26.930-0400
dryad.dansTransferDate 2017-10-31T12:42:55.440-0400

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Title Aristotelia chilensis traits_selection
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Description Morphological and physiological trait of Aristotelia chilensis seedlings under natural selection in south american temperate rain forest
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