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dc.contributor.author
Gotsch, Sybil G.
dc.contributor.author
Geiger, Erika L.
dc.contributor.author
Franco, Augusto C.
dc.contributor.author
Goldstein, Guillermo Hernan
dc.contributor.author
Meinzer, Frederick C.
dc.contributor.author
Hoffmann, William A.
dc.date.available
2019-01-25T21:08:14Z
dc.date.issued
2010-06
dc.identifier.citation
Gotsch, Sybil G.; Geiger, Erika L.; Franco, Augusto C.; Goldstein, Guillermo Hernan; Meinzer, Frederick C.; et al.; Allocation to leaf area and sapwood area affects water relations of co-occurring savanna and forest trees; Springer; Oecologia; 163; 2; 6-2010; 291-301
dc.identifier.issn
0029-8549
dc.identifier.uri
http://hdl.handle.net/11336/68686
dc.description.abstract
Water availability is a principal factor limiting the distribution of closed-canopy forest in the seasonal tropics, suggesting that forest tree species may not be well adapted to cope with seasonal drought. We studied 11 congeneric species pairs, each containing one forest and one savanna species, to test the hypothesis that forest trees have a lower capacity to maintain seasonal homeostasis in water relations relative to savanna species. To quantify this, we measured sap flow, leaf water potential (ΨL), stomatal conductance (gs), wood density, and Huber value (sapwood area:leaf area) of the 22 study species. We found significant differences in the water relations of these two species types. Leaf area specific hydraulic conductance of the soil/root/leaf pathway (Gt) was greater for savanna species than forest species. The lower Gt of forest trees resulted in significantly lower ΨL and gs in the late dry season relative to savanna trees. The differences in Gt can be explained by differences in biomass allocation of savanna and forest trees. Savanna species had higher Huber values relative to forest species, conferring greater transport capacity on a leaf area basis. Forest trees have a lower capacity to maintain homeostasis in ΨL due to greater allocation to leaf area relative to savanna species. Despite significant differences in water relations, relationships between traits such as wood density and minimum ΨL were indistinguishable for the two species groups, indicating that forest and savanna share a common axis of water-use strategies involving multiple traits.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Brazil
dc.subject
Cerrado
dc.subject
Huber Value
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Leaf Area Index
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Sap Flow
dc.subject.classification
Otras Ciencias Biológicas
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Allocation to leaf area and sapwood area affects water relations of co-occurring savanna and forest trees
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-01-25T13:39:18Z
dc.identifier.eissn
1432-1939
dc.journal.volume
163
dc.journal.number
2
dc.journal.pagination
291-301
dc.journal.pais
Alemania
dc.description.fil
Fil: Gotsch, Sybil G.. University of North Carolina; Estados Unidos
dc.description.fil
Fil: Geiger, Erika L.. University of North Carolina; Estados Unidos
dc.description.fil
Fil: Franco, Augusto C.. Universidade do Brasília; Brasil
dc.description.fil
Fil: Goldstein, Guillermo Hernan. University of Miami; Estados Unidos. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Meinzer, Frederick C.. United States Forest Service; Estados Unidos
dc.description.fil
Fil: Hoffmann, William A.. University of North Carolina; Estados Unidos
dc.journal.title
Oecologia
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00442-009-1543-2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00442-009-1543-2


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