Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes

Shi, H; Li, L; Eamus, D; Cleverly, J; Huete, A; Beringer, J; Yu, Q; Van Gorsel, E; Hutley, L

Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes

Shi, H Li, L

Eamus, D

Cleverly, J

Huete, A

Beringer, J Yu, Q

Van Gorsel, E Hutley, L

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Publication Type:: Journal Article
Citation:: Environmental Research Letters, 2014, 9 (10)
Issue Date:: 2014-10-01

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Field	Value	Language
dc.contributor.author	Shi, H	en_US
dc.contributor.author	Li, L https://orcid.org/0000-0001-9983-6681	en_US
dc.contributor.author	Eamus, D https://orcid.org/0000-0003-2765-8040	en_US
dc.contributor.author	Cleverly, J https://orcid.org/0000-0002-2731-7150	en_US
dc.contributor.author	Huete, A https://orcid.org/0000-0003-2809-2376	en_US
dc.contributor.author	Beringer, J	en_US
dc.contributor.author	Yu, Q https://orcid.org/0000-0001-6950-1821	en_US
dc.contributor.author	Van Gorsel, E	en_US
dc.contributor.author	Hutley, L	en_US
dc.date.issued	2014-10-01	en_US
dc.identifier.citation	Environmental Research Letters, 2014, 9 (10)	en_US
dc.identifier.issn	1748-9318	en_US
dc.identifier.uri	http://hdl.handle.net/10453/35713
dc.description.abstract	© 2014 IOP Publishing Ltd. The sensitivity of ecosystem gross primary production (GPP) to availability of water and photosynthetically active radiation (PAR) differs among biomes. Here we investigated variations of ecosystem light-use-efficiency (eLUE: GPP/PAR) and water-use-efficiency (eWUE: GPP/evapotranspiration) among seven Australian eddy covariance sites with differing annual precipitation, species composition and temperature. Changes to both eLUE and eWUE were primarily correlated with atmospheric vapor pressure deficit (VPD) at multiple temporal scales across biomes, with minor additional correlations observed with soil moisture and temperature. The effects of leaf area index on eLUE and eWUE were also relatively weak compared to VPD, indicating an intrinsic dependency of eLUE and eWUE on climate. Additionally, eLUE and eWUE were statistically different for biomes between summer and winter, except eWUE for savannas and the grassland. These findings will improve our understanding of how light- and water-use traits in Australian ecosystems may respond to climate change.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DE120103022
dc.relation.ispartof	Environmental Research Letters	en_US
dc.relation.isbasedon	10.1088/1748-9326/9/10/104002	en_US
dc.subject.classification	Meteorology & Atmospheric Sciences	en_US
dc.title	Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes	en_US
dc.type	Journal Article
utslib.citation.volume	10	en_US
utslib.citation.volume	9	en_US
utslib.for	0602 Ecology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CAMGIS - Centre for Advanced Modelling and Geospatial lnformation Systems
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	open_access
pubs.issue	10	en_US
pubs.publication-status	Published	en_US
pubs.volume	9	en_US

Abstract:

© 2014 IOP Publishing Ltd. The sensitivity of ecosystem gross primary production (GPP) to availability of water and photosynthetically active radiation (PAR) differs among biomes. Here we investigated variations of ecosystem light-use-efficiency (eLUE: GPP/PAR) and water-use-efficiency (eWUE: GPP/evapotranspiration) among seven Australian eddy covariance sites with differing annual precipitation, species composition and temperature. Changes to both eLUE and eWUE were primarily correlated with atmospheric vapor pressure deficit (VPD) at multiple temporal scales across biomes, with minor additional correlations observed with soil moisture and temperature. The effects of leaf area index on eLUE and eWUE were also relatively weak compared to VPD, indicating an intrinsic dependency of eLUE and eWUE on climate. Additionally, eLUE and eWUE were statistically different for biomes between summer and winter, except eWUE for savannas and the grassland. These findings will improve our understanding of how light- and water-use traits in Australian ecosystems may respond to climate change.

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http://hdl.handle.net/10453/35713