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Hydraulic architecture of two species differing in wood density: opposing strategies in co-occurring tropical pioneer treespce_2421 116..

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dc.creator McCulloh, Katherine A.
dc.creator Johnson, Daniel M.
dc.creator Meinzer, Frederick C.
dc.creator Voelker, Steven L.
dc.creator Lachenbruch, Barbara
dc.creator Domec, Jean-Christophe
dc.date.accessioned 2012-11-01T17:37:11Z
dc.date.available 2012-11-01T17:37:11Z
dc.date.issued 2012-01
dc.identifier.citation McCulloh, K. A., Johnson, D. M., Meinzer, F. C., Voelker, S. L., Lachenbruch, B., & Domec, J. (2012). Hydraulic architecture of two species differing in wood density: Opposing strategies in co-occurring tropical pioneer trees. Plant, Cell & Environment, 35(1), 116-125. doi: 10.1111/j.1365-3040.2011.02421.x en_US
dc.identifier.uri http://hdl.handle.net/1957/34733
dc.description This is the publisher’s final pdf. The published article is copyrighted by Blackwell Publishing Ltd and can be found at: http://onlinelibrary.wiley.com/. en_US
dc.description.abstract Co-occurring species often have different strategies for tolerating daily cycles of water stress. One underlying parameter that can link together the suite of traits that enables a given strategy is wood density. Here we compare hydraulic traits of two pioneer species from a tropical forest in Panama that differ in wood density: Miconia argentea and Anacardium excelsum. As hypothesized, the higher wood density of Miconia was associated with smaller diameter vessels and fibres, more water stress-resistant leaves and stems, and roughly half the capacitance of the lower wood density Anacardium. However, the scaling of hydraulic parameters such as the increases in leaf area and measures of hydraulic conductivity with stem diameter was remarkably similar between the two species. The collection of traits exhibited by Miconia allowed it to tolerate more water stress than Anacardium, which relied more heavily on its capacitance to buffer daily water potential fluctuations. This work demonstrates the importance of examining a range of hydraulic traits throughout the plant and highlights the spectrum of possible strategies for coping with daily and seasonal water stress cycles. en_US
dc.description.sponsorship Funding was provided by National Science Foundation grant IBN 09–19871 to K.A.M., D.M.J., F.C.M. and B.L. en_US
dc.language.iso en_US en_US
dc.publisher Blackwell Publishing Ltd en_US
dc.relation.ispartofseries Plant, Cell & Environment en_US
dc.relation.ispartofseries Vol. 35 no. 1 en_US
dc.subject Anacardium excelsum en_US
dc.subject Miconia argentea en_US
dc.subject Hydraulic conductivity en_US
dc.subject Vulnerability curves en_US
dc.subject Xylem anatomy. en_US
dc.title Hydraulic architecture of two species differing in wood density: opposing strategies in co-occurring tropical pioneer treespce_2421 116.. en_US
dc.type Article en_US
dc.description.peerreview yes en_US
dc.identifier.doi 10.1111/j.1365-3040.2011.02421.x

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