The dynamic pipeline: hydraulic capacitance and xylem hydraulic safety in four tall conifer species Public Deposited

http://ir.library.oregonstate.edu/concern/articles/9306t098v

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by John Wiley & Sons Ltd. and can be found at:  http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291365-3040.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Recent work has suggested that plants differ in their relative reliance on structural avoidance of embolism versus maintenance of the xylem water column through dynamic traits such as capacitance, but we still know little about how and why species differ along this continuum. It is even less clear how or if different parts of a plant vary along this spectrum. Here we examined how traits such as hydraulic conductivity or conductance, xylem vulnerability curves, and capacitance differ in trunks, large- and small-diameter branches, and foliated shoots of four species of co-occurring conifers. We found striking similarities among species in most traits, but large differences among plant parts. Vulnerability to embolism was high in shoots, low in small- and large-diameter branches, and high again in the trunks. Safety margins, defined as the pressure causing 50% loss of hydraulic conductivity or conductance minus the midday water potential, were large in small-diameter branches, small in trunks and negative in shoots. Sapwood capacitance increased with stem diameter, and was correlated with stem vulnerability, wood density and latewood proportion. Capacitive release of water is a dynamic aspect of plant hydraulics that is integral to maintenance of long-distance water transport.
Resource Type
DOI
Date Available
Date Issued
Citation
  • McCulloh, K. A., Johnson, D. M., Meinzer, F. C. and Woodruff, D. R. (2014), The dynamic pipeline: hydraulic capacitance and xylem hydraulic safety in four tall conifer species. Plant, Cell and Environment, 37: 1171–1183. doi:10.1111/pce.12225
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2014-05-07T21:10:37Z (GMT). No. of bitstreams: 2 McCullohKatherineForestryDynamicPipelineHydraulic.pdf: 459243 bytes, checksum: 19877d36ba9ed8b094aaad38a8939e4d (MD5) McCullohKatherineForestryDynamicPipelineHydraulic_FigureS1.pdf: 76709 bytes, checksum: 92997728646fbc370d839107ed695fa3 (MD5) Previous issue date: 2014-05
  • description.provenance : Submitted by Erin Clark (erin.clark@oregonstate.edu) on 2014-05-07T21:10:21Z No. of bitstreams: 2 McCullohKatherineForestryDynamicPipelineHydraulic.pdf: 459243 bytes, checksum: 19877d36ba9ed8b094aaad38a8939e4d (MD5) McCullohKatherineForestryDynamicPipelineHydraulic_FigureS1.pdf: 76709 bytes, checksum: 92997728646fbc370d839107ed695fa3 (MD5)
  • description.provenance : Approved for entry into archive by Erin Clark(erin.clark@oregonstate.edu) on 2014-05-07T21:10:37Z (GMT) No. of bitstreams: 2 McCullohKatherineForestryDynamicPipelineHydraulic.pdf: 459243 bytes, checksum: 19877d36ba9ed8b094aaad38a8939e4d (MD5) McCullohKatherineForestryDynamicPipelineHydraulic_FigureS1.pdf: 76709 bytes, checksum: 92997728646fbc370d839107ed695fa3 (MD5)

Relationships

In Administrative Set:
Last modified: 07/26/2017 Default
Citations:

EndNote | Zotero | Mendeley

Items