Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes
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 sev...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/9/10/104002 |
| _version_ | 1797747970681077760 |
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| author | Hao Shi Longhui Li Derek Eamus James Cleverly Alfredo Huete Jason Beringer Qiang Yu Eva van Gorsel Lindsay Hutley |
| author_facet | Hao Shi Longhui Li Derek Eamus James Cleverly Alfredo Huete Jason Beringer Qiang Yu Eva van Gorsel Lindsay Hutley |
| author_sort | Hao Shi |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T15:58:15Z |
| format | Article |
| id | doaj.art-00f6ffaf40cd4ebd88615ae21db46323 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:58:15Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-00f6ffaf40cd4ebd88615ae21db463232023-08-09T14:43:32ZengIOP PublishingEnvironmental Research Letters1748-93262014-01-0191010400210.1088/1748-9326/9/10/104002Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomesHao Shi0Longhui Li1Derek Eamus2James Cleverly3Alfredo Huete4Jason Beringer5Qiang Yu6Eva van Gorsel7Lindsay Hutley8Plant Functional Biology and Climate Change Cluster, University of Technology , Sydney, NSW, AustraliaPlant Functional Biology and Climate Change Cluster, University of Technology , Sydney, NSW, AustraliaPlant Functional Biology and Climate Change Cluster, University of Technology , Sydney, NSW, Australia; Australian Supersite Network, University of Technology , Sydney, NSW, Australia; National Centre for Groundwater Research and Training, University of Technology , Sydney, NSW, AustraliaPlant Functional Biology and Climate Change Cluster, University of Technology , Sydney, NSW, Australia; Australian Supersite Network, University of Technology , Sydney, NSW, AustraliaPlant Functional Biology and Climate Change Cluster, University of Technology , Sydney, NSW, AustraliaSchool of Geography & Environmental Science, Monash University, Clayton , Vic, AustraliaPlant Functional Biology and Climate Change Cluster, University of Technology , Sydney, NSW, AustraliaCSIRO Marine and Atmospheric Research, Canberra, ACT, AustraliaResearch Institute for the Environment and Livelihoods, Charles Darwin University , Darwin, NT, AustraliaThe 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.https://doi.org/10.1088/1748-9326/9/10/104002ecosystem light- and water-use-efficienciestemporal scalesbiomesclimatespatial pattern |
| spellingShingle | Hao Shi Longhui Li Derek Eamus James Cleverly Alfredo Huete Jason Beringer Qiang Yu Eva van Gorsel Lindsay Hutley Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes Environmental Research Letters ecosystem light- and water-use-efficiencies temporal scales biomes climate spatial pattern |
| title | Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes |
| title_full | Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes |
| title_fullStr | Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes |
| title_full_unstemmed | Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes |
| title_short | Intrinsic climate dependency of ecosystem light and water-use-efficiencies across Australian biomes |
| title_sort | intrinsic climate dependency of ecosystem light and water use efficiencies across australian biomes |
| topic | ecosystem light- and water-use-efficiencies temporal scales biomes climate spatial pattern |
| url | https://doi.org/10.1088/1748-9326/9/10/104002 |
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