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<title>UTas ePrints - Hydraulic and photosynthetic co-ordination in seasonally dry tropical forest trees</title>
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<meta content="Brodribb, Tim J." name="eprints.creators_name" />
<meta content="Holbrook, N. M" name="eprints.creators_name" />
<meta content="Gutierrez, M. V." name="eprints.creators_name" />
<meta content="Timothy.Brodribb@utas.edu.au" name="eprints.creators_id" />
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<meta content="2007-12-03 03:09:23" name="eprints.datestamp" />
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<meta content="Hydraulic and photosynthetic co-ordination in seasonally
dry tropical forest trees" name="eprints.title" />
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<meta content="fluorescence; hydraulic conductivity; phenology;
photosynthesis; tropical dry forest." name="eprints.keywords" />
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<meta content="In the present study the linkage between hydraulic, photosynthetic
and phenological properties of tropical dry forest
trees were investigated. Seasonal patterns of stem-specific
conductivity (
K
SP
) described from 12 species, including
deciduous, brevi-deciduous and evergreen species, indicated
that only evergreen species were consistent in their
response to a dry-to-wet season transition. In contrast,
K
SP
in deciduous and brevi-deciduous species encompassed a
range of responses, from an insignificant increase in
K
SP
following rains in some species, to a nine-fold increase in
others. Amongst deciduous species, the minimum
K
SP
during
the dry season ranged from 6 to 56% of wet season
K
SP,
indicating in the latter case that a significant portion of the
xylem remained functional during the dry season. In all
species and all seasons, leaf-specific stem conductivity (
K
L
)
was strongly related to the photosynthetic capacity of the
supported foliage, although leaf photosynthesis became
saturated in species with high
K
L
. The strength of this correlation
was surprising given that much of the whole-plant
resistance appears to be in the leaves. Hydraulic capacity,
defined as the product of
K
L
and the soil–leaf water potential
difference, was strongly correlated with the photosynthetic
rate of foliage in the dry season, but only weakly
correlated in the wet season." name="eprints.abstract" />
<meta content="2002" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Plant, Cell and Environment" name="eprints.publication" />
<meta content="25" name="eprints.volume" />
<meta content="11" name="eprints.number" />
<meta content="1435-1444" name="eprints.pagerange" />
<meta content="10.1046/j.1365-3040.2002.00919.x" name="eprints.id_number" />
<meta content="TRUE" name="eprints.refereed" />
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1059–1062." name="eprints.referencetext" />
<meta content="Brodribb, Tim J. and Holbrook, N. M and Gutierrez, M. V. (2002) Hydraulic and photosynthetic co-ordination in seasonally dry tropical forest trees. Plant, Cell and Environment, 25 (11). pp. 1435-1444. ISSN 0140-7791" name="eprints.citation" />
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dry tropical forest trees" name="DC.title" />
<meta content="Brodribb, Tim J." name="DC.creator" />
<meta content="Holbrook, N. M" name="DC.creator" />
<meta content="Gutierrez, M. V." name="DC.creator" />
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<meta content="270400 Botany" name="DC.subject" />
<meta content="In the present study the linkage between hydraulic, photosynthetic
and phenological properties of tropical dry forest
trees were investigated. Seasonal patterns of stem-specific
conductivity (
K
SP
) described from 12 species, including
deciduous, brevi-deciduous and evergreen species, indicated
that only evergreen species were consistent in their
response to a dry-to-wet season transition. In contrast,
K
SP
in deciduous and brevi-deciduous species encompassed a
range of responses, from an insignificant increase in
K
SP
following rains in some species, to a nine-fold increase in
others. Amongst deciduous species, the minimum
K
SP
during
the dry season ranged from 6 to 56% of wet season
K
SP,
indicating in the latter case that a significant portion of the
xylem remained functional during the dry season. In all
species and all seasons, leaf-specific stem conductivity (
K
L
)
was strongly related to the photosynthetic capacity of the
supported foliage, although leaf photosynthesis became
saturated in species with high
K
L
. The strength of this correlation
was surprising given that much of the whole-plant
resistance appears to be in the leaves. Hydraulic capacity,
defined as the product of
K
L
and the soil–leaf water potential
difference, was strongly correlated with the photosynthetic
rate of foliage in the dry season, but only weakly
correlated in the wet season." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Hydraulic and photosynthetic co-ordination in seasonally dry tropical forest trees</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Brodribb, Tim J.</span> and <span class="person_name">Holbrook, N. M</span> and <span class="person_name">Gutierrez, M. V.</span> (2002) <xhtml:em>Hydraulic and photosynthetic co-ordination in seasonally dry tropical forest trees.</xhtml:em> Plant, Cell and Environment, 25 (11). pp. 1435-1444. ISSN 0140-7791</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2609/1/Hydraulic_limit.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2609/1/Hydraulic_limit.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />262Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="3418" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1046/j.1365-3040.2002.00919.x">http://dx.doi.org/10.1046/j.1365-3040.2002.00919.x</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">In the present study the linkage between hydraulic, photosynthetic
and phenological properties of tropical dry forest
trees were investigated. Seasonal patterns of stem-specific
conductivity (
K
SP
) described from 12 species, including
deciduous, brevi-deciduous and evergreen species, indicated
that only evergreen species were consistent in their
response to a dry-to-wet season transition. In contrast,
K
SP
in deciduous and brevi-deciduous species encompassed a
range of responses, from an insignificant increase in
K
SP
following rains in some species, to a nine-fold increase in
others. Amongst deciduous species, the minimum
K
SP
during
the dry season ranged from 6 to 56% of wet season
K
SP,
indicating in the latter case that a significant portion of the
xylem remained functional during the dry season. In all
species and all seasons, leaf-specific stem conductivity (
K
L
)
was strongly related to the photosynthetic capacity of the
supported foliage, although leaf photosynthesis became
saturated in species with high
K
L
. The strength of this correlation
was surprising given that much of the whole-plant
resistance appears to be in the leaves. Hydraulic capacity,
defined as the product of
K
L
and the soil–leaf water potential
difference, was strongly correlated with the photosynthetic
rate of foliage in the dry season, but only weakly
correlated in the wet season.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">"The definitive version is available at www.blackwell-synergy.com"
</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">fluorescence; hydraulic conductivity; phenology;
photosynthesis; tropical dry forest.</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270402.html">270000 Biological Sciences > 270400 Botany > 270402 Plant Physiology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/270400.html">270000 Biological Sciences > 270400 Botany</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2609</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Scholarly Publications Librarian</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">03 Dec 2007 14:09</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2609;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2609">item control page</a></p>
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