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dc.contributor.author
Merkhofer, Lisa
dc.contributor.author
Wilf, Peter
dc.contributor.author
Haas, M. Tyler
dc.contributor.author
Kooyman, Robert M.
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Sack, Lawren
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Scoffoni, Christine
dc.contributor.author
Cúneo, Néstor Rubén
dc.date.available
2018-04-05T15:59:53Z
dc.date.issued
2015-07
dc.identifier.citation
Merkhofer, Lisa; Wilf, Peter; Haas, M. Tyler; Kooyman, Robert M.; Sack, Lawren; et al.; Resolving Australian analogs for an Eocene Patagonian paleorainforest using leaf size and floristics; Botanical Society of America; American Journal of Botany; 102; 7; 7-2015; 1160-1173
dc.identifier.issn
0002-9122
dc.identifier.uri
http://hdl.handle.net/11336/40871
dc.description.abstract
• Premise of the study: The diverse early Eocene flora from Laguna del Hunco (LH) in Patagonia, Argentina has many nearest living relatives (NLRs) in Australasia but few in South America, indicating the differential survival of an ancient, trans‐Antarctic rainforest biome. To better understand this significant biogeographic pattern, we used detailed comparisons of leaf size and floristics to quantify the legacy of LH across a large network of Australian rainforest‐plot assemblages. • Methods: We applied vein scaling, a new method for estimating the original areas of fragmented leaves. We then compared leaf size and floristics at LH with living Australian assemblages and tabulated the climates of those where NLRs occur, along with additional data on climatic ranges of “ex‐Australian” NLRs that survive outside of Australia. • Key results: Vein scaling estimated areas as accurately as leaf‐size classes. Applying vein scaling to fossil fragments increased the grand mean area of LH by 450 mm2, recovering more originally large leaves. The paleoflora has a majority of microphyll leaves, comparable to leaf litter in subtropical Australian forests, which also have the greatest floristic similarity to LH. Tropical Australian assemblages also share many taxa with LH, and ex‐Australian NLRs mostly inhabit cool, wet montane habitats no longer present in Australia. • Conclusions: Vein scaling is valuable for improving the resolution of fossil leaf‐size distributions by including fragmented specimens. The legacy of LH is evident not only in subtropical and tropical Australia but also in tropical montane Australasia and Southeast Asia, reflecting the disparate histories of surviving Gondwanan lineages.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Botanical Society of America
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Biogeography
dc.subject
Gondwana
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Rainforest
dc.subject
Paleoclimate
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Resolving Australian analogs for an Eocene Patagonian paleorainforest using leaf size and floristics
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-28T18:12:23Z
dc.journal.volume
102
dc.journal.number
7
dc.journal.pagination
1160-1173
dc.journal.pais
Estados Unidos
dc.journal.ciudad
St. Louis
dc.description.fil
Fil: Merkhofer, Lisa. State University of Pennsylvania; Estados Unidos
dc.description.fil
Fil: Wilf, Peter. State University of Pennsylvania; Estados Unidos
dc.description.fil
Fil: Haas, M. Tyler. State University of Pennsylvania; Estados Unidos
dc.description.fil
Fil: Kooyman, Robert M.. Macquarie University; Australia
dc.description.fil
Fil: Sack, Lawren. University of California at Los Angeles; Estados Unidos
dc.description.fil
Fil: Scoffoni, Christine. University of California at Los Angeles; Estados Unidos
dc.description.fil
Fil: Cúneo, Néstor Rubén. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
American Journal of Botany
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3732/ajb.1500159
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.3732/ajb.1500159
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