Temporal and among-site variability of inherent water use efficiency at the ecosystem level

C. Beer; P. Ciais; M. Reichstein; D. Baldocchi; B.E. Law; D. Papale; J.F. Soussana; C. Ammann; N. Buchmann; D. Frank; D. Gianelle; I.A. Janssens; A. Knohl; B. Kostner; E.J. Moors; O. Roupsard; H. Verbeeck; T. Vesala; C.A. Williams; G. Wohlfahrt

doi:10.1029/2008GB003233

Temporal and among-site variability of inherent water use efficiency at the ecosystem level

C. Beer, P. Ciais, M. Reichstein, D. Baldocchi, B.E. Law, D. Papale, J.F. Soussana, C. Ammann, N. Buchmann, D. Frank, D. Gianelle, I.A. Janssens, A. Knohl, B. Kostner, E.J. Moors, O. Roupsard, H. Verbeeck, T. Vesala, C.A. Williams, G. Wohlfahrt

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Abstract

Half-hourly measurements of the net exchanges of carbon dioxide and water vapor between terrestrial ecosystems and the atmosphere provide estimates of gross primary production (GPP) and evapotranspiration (ET) at the ecosystem level and on daily to annual timescales. The ratio of these quantities represents ecosystem water use efficiency. Its multiplication with mean daylight vapor pressure deficit (VPD) leads to a quantity which we call “inherent water use efficiency” (IWUE*). The dependence of IWUE* on environmental conditions indicates possible adaptive adjustment of ecosystem physiology in response to a changing environment. IWUE* is analyzed for 43 sites across a range of plant functional types and climatic conditions. IWUE* increases during short-term moderate drought conditions. Mean annual IWUE* varied by a factor of 3 among all sites. This is partly explained by soil moisture at field capacity, particularly in deciduous broad-leaved forests. Canopy light interception sets the upper limits to canopy photosynthesis, and explains half the variance in annual IWUE* among herbaceous ecosystems and evergreen needle-leaved forests. Knowledge of IWUE* offers valuable improvement to the representation of carbon and water coupling in ecosystem process models

Original language	English
Article number	GB2018
Number of pages	13
Journal	Global Biogeochemical Cycles
Volume	23
DOIs	https://doi.org/10.1029/2008GB003233
Publication status	Published - 2009

Keywords

water use efficiency
carbon dioxide
water vapour movement
terrestrial ecosystems
atmosphere
carbon cycle
scots pine forest
co2 exchange
carbon-dioxide
eddy covariance
central germany
ponderosa pine
canopy-scale
aspen forest
beech forest
time scales

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1029/2008GB003233

ESS-CC
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Cite this

Beer, C., Ciais, P., Reichstein, M., Baldocchi, D., Law, B. E., Papale, D., Soussana, J. F., Ammann, C., Buchmann, N., Frank, D., Gianelle, D., Janssens, I. A., Knohl, A., Kostner, B., Moors, E. J., Roupsard, O., Verbeeck, H., Vesala, T., Williams, C. A., & Wohlfahrt, G. (2009). Temporal and among-site variability of inherent water use efficiency at the ecosystem level. Global Biogeochemical Cycles, 23, Article GB2018. https://doi.org/10.1029/2008GB003233

@article{f37feaa1873e484199c609746c86e3b7,

title = "Temporal and among-site variability of inherent water use efficiency at the ecosystem level",

abstract = "Half-hourly measurements of the net exchanges of carbon dioxide and water vapor between terrestrial ecosystems and the atmosphere provide estimates of gross primary production (GPP) and evapotranspiration (ET) at the ecosystem level and on daily to annual timescales. The ratio of these quantities represents ecosystem water use efficiency. Its multiplication with mean daylight vapor pressure deficit (VPD) leads to a quantity which we call “inherent water use efficiency” (IWUE*). The dependence of IWUE* on environmental conditions indicates possible adaptive adjustment of ecosystem physiology in response to a changing environment. IWUE* is analyzed for 43 sites across a range of plant functional types and climatic conditions. IWUE* increases during short-term moderate drought conditions. Mean annual IWUE* varied by a factor of 3 among all sites. This is partly explained by soil moisture at field capacity, particularly in deciduous broad-leaved forests. Canopy light interception sets the upper limits to canopy photosynthesis, and explains half the variance in annual IWUE* among herbaceous ecosystems and evergreen needle-leaved forests. Knowledge of IWUE* offers valuable improvement to the representation of carbon and water coupling in ecosystem process models",

keywords = "watergebruiksrendement, kooldioxide, waterdampbeweging, terrestrische ecosystemen, atmosfeer, koolstofcyclus, water use efficiency, carbon dioxide, water vapour movement, terrestrial ecosystems, atmosphere, carbon cycle, scots pine forest, co2 exchange, carbon-dioxide, eddy covariance, central germany, ponderosa pine, canopy-scale, aspen forest, beech forest, time scales",

author = "C. Beer and P. Ciais and M. Reichstein and D. Baldocchi and B.E. Law and D. Papale and J.F. Soussana and C. Ammann and N. Buchmann and D. Frank and D. Gianelle and I.A. Janssens and A. Knohl and B. Kostner and E.J. Moors and O. Roupsard and H. Verbeeck and T. Vesala and C.A. Williams and G. Wohlfahrt",

year = "2009",

doi = "10.1029/2008GB003233",

language = "English",

volume = "23",

journal = "Global Biogeochemical Cycles",

issn = "0886-6236",

publisher = "Wiley",

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Beer, C, Ciais, P, Reichstein, M, Baldocchi, D, Law, BE, Papale, D, Soussana, JF, Ammann, C, Buchmann, N, Frank, D, Gianelle, D, Janssens, IA, Knohl, A, Kostner, B, Moors, EJ, Roupsard, O, Verbeeck, H, Vesala, T, Williams, CA & Wohlfahrt, G 2009, 'Temporal and among-site variability of inherent water use efficiency at the ecosystem level', Global Biogeochemical Cycles, vol. 23, GB2018. https://doi.org/10.1029/2008GB003233

TY - JOUR

T1 - Temporal and among-site variability of inherent water use efficiency at the ecosystem level

AU - Beer, C.

AU - Ciais, P.

AU - Reichstein, M.

AU - Baldocchi, D.

AU - Law, B.E.

AU - Papale, D.

AU - Soussana, J.F.

AU - Ammann, C.

AU - Buchmann, N.

AU - Frank, D.

AU - Gianelle, D.

AU - Janssens, I.A.

AU - Knohl, A.

AU - Kostner, B.

AU - Moors, E.J.

AU - Roupsard, O.

AU - Verbeeck, H.

AU - Vesala, T.

AU - Williams, C.A.

AU - Wohlfahrt, G.

PY - 2009

Y1 - 2009

N2 - Half-hourly measurements of the net exchanges of carbon dioxide and water vapor between terrestrial ecosystems and the atmosphere provide estimates of gross primary production (GPP) and evapotranspiration (ET) at the ecosystem level and on daily to annual timescales. The ratio of these quantities represents ecosystem water use efficiency. Its multiplication with mean daylight vapor pressure deficit (VPD) leads to a quantity which we call “inherent water use efficiency” (IWUE*). The dependence of IWUE* on environmental conditions indicates possible adaptive adjustment of ecosystem physiology in response to a changing environment. IWUE* is analyzed for 43 sites across a range of plant functional types and climatic conditions. IWUE* increases during short-term moderate drought conditions. Mean annual IWUE* varied by a factor of 3 among all sites. This is partly explained by soil moisture at field capacity, particularly in deciduous broad-leaved forests. Canopy light interception sets the upper limits to canopy photosynthesis, and explains half the variance in annual IWUE* among herbaceous ecosystems and evergreen needle-leaved forests. Knowledge of IWUE* offers valuable improvement to the representation of carbon and water coupling in ecosystem process models

AB - Half-hourly measurements of the net exchanges of carbon dioxide and water vapor between terrestrial ecosystems and the atmosphere provide estimates of gross primary production (GPP) and evapotranspiration (ET) at the ecosystem level and on daily to annual timescales. The ratio of these quantities represents ecosystem water use efficiency. Its multiplication with mean daylight vapor pressure deficit (VPD) leads to a quantity which we call “inherent water use efficiency” (IWUE*). The dependence of IWUE* on environmental conditions indicates possible adaptive adjustment of ecosystem physiology in response to a changing environment. IWUE* is analyzed for 43 sites across a range of plant functional types and climatic conditions. IWUE* increases during short-term moderate drought conditions. Mean annual IWUE* varied by a factor of 3 among all sites. This is partly explained by soil moisture at field capacity, particularly in deciduous broad-leaved forests. Canopy light interception sets the upper limits to canopy photosynthesis, and explains half the variance in annual IWUE* among herbaceous ecosystems and evergreen needle-leaved forests. Knowledge of IWUE* offers valuable improvement to the representation of carbon and water coupling in ecosystem process models

KW - watergebruiksrendement

KW - kooldioxide

KW - waterdampbeweging

KW - terrestrische ecosystemen

KW - atmosfeer

KW - koolstofcyclus

KW - water use efficiency

KW - carbon dioxide

KW - water vapour movement

KW - terrestrial ecosystems

KW - atmosphere

KW - carbon cycle

KW - scots pine forest

KW - co2 exchange

KW - carbon-dioxide

KW - eddy covariance

KW - central germany

KW - ponderosa pine

KW - canopy-scale

KW - aspen forest

KW - beech forest

KW - time scales

U2 - 10.1029/2008GB003233

DO - 10.1029/2008GB003233

M3 - Article

SN - 0886-6236

VL - 23

JO - Global Biogeochemical Cycles

JF - Global Biogeochemical Cycles

M1 - GB2018

ER -

Temporal and among-site variability of inherent water use efficiency at the ecosystem level

Abstract

Keywords

UN SDGs

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Projects

ESS-CC

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