Sensitivity of gross primary productivity to climatic drivers during the summer drought of 2018 in Europe
In summer 2018, Europe experienced a record drought, but it remains unknown how the drought affected ecosystem carbon dynamics. Using observations from 34 eddy covariance sites in different biomes across Europe, we studied the sensitivity of gross primary productivity (GPP) to environmental drivers...
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| Veröffentlicht in: | Philosophical transactions of the Royal Society of London. Series B. Biological sciences 2020-10, Vol.375 (1810), p.20190747-20190747 |
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| container_title | Philosophical transactions of the Royal Society of London. Series B. Biological sciences |
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| creator | Fu, Zheng Ciais, Philippe Bastos, Ana Stoy, Paul C Yang, Hui Green, Julia K Wang, Bingxue Yu, Kailiang Huang, Yuanyuan Knohl, Alexander Šigut, Ladislav Gharun, Mana Cuntz, Matthias Arriga, Nicola Roland, Marilyn Peichl, Matthias Migliavacca, Mirco Cremonese, Edoardo Varlagin, Andrej Brümmer, Christian Gourlez de la Motte, Louis Fares, Silvano Buchmann, Nina El-Madany, Tarek S Pitacco, Andrea Vendrame, Nadia Li, Zhaolei Vincke, Caroline Magliulo, Enzo Koebsch, Franziska |
| description | In summer 2018, Europe experienced a record drought, but it remains unknown how the drought affected ecosystem carbon dynamics. Using observations from 34 eddy covariance sites in different biomes across Europe, we studied the sensitivity of gross primary productivity (GPP) to environmental drivers during the summer drought of 2018 versus the reference summer of 2016. We found a greater drought-induced decline of summer GPP in grasslands (-38%) than in forests (-10%), which coincided with reduced evapotranspiration and soil water content (SWC). As compared to the 'normal year' of 2016, GPP in different ecosystems exhibited more negative sensitivity to summer air temperature (Ta) but stronger positive sensitivity to SWC during summer drought in 2018, that is, a stronger reduction of GPP with soil moisture deficit. We found larger negative effects of Ta and vapour pressure deficit (VPD) but a lower positive effect of photosynthetic photon flux density on GPP in 2018 compared to 2016, which contributed to reduced summer GPP in 2018. Our results demonstrate that high temperature-induced increases in VPD and decreases in SWC aggravated drought impacts on GPP. This article is part of the theme issue 'Impacts of the 2018 severe drought and heatwave in Europe: from site to continental scale'. |
| doi_str_mv | 10.1098/rstb.2019.0747 |
| format | Article |
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Using observations from 34 eddy covariance sites in different biomes across Europe, we studied the sensitivity of gross primary productivity (GPP) to environmental drivers during the summer drought of 2018 versus the reference summer of 2016. We found a greater drought-induced decline of summer GPP in grasslands (-38%) than in forests (-10%), which coincided with reduced evapotranspiration and soil water content (SWC). As compared to the 'normal year' of 2016, GPP in different ecosystems exhibited more negative sensitivity to summer air temperature (Ta) but stronger positive sensitivity to SWC during summer drought in 2018, that is, a stronger reduction of GPP with soil moisture deficit. We found larger negative effects of Ta and vapour pressure deficit (VPD) but a lower positive effect of photosynthetic photon flux density on GPP in 2018 compared to 2016, which contributed to reduced summer GPP in 2018. 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We found larger negative effects of Ta and vapour pressure deficit (VPD) but a lower positive effect of photosynthetic photon flux density on GPP in 2018 compared to 2016, which contributed to reduced summer GPP in 2018. Our results demonstrate that high temperature-induced increases in VPD and decreases in SWC aggravated drought impacts on GPP. 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As compared to the 'normal year' of 2016, GPP in different ecosystems exhibited more negative sensitivity to summer air temperature (Ta) but stronger positive sensitivity to SWC during summer drought in 2018, that is, a stronger reduction of GPP with soil moisture deficit. We found larger negative effects of Ta and vapour pressure deficit (VPD) but a lower positive effect of photosynthetic photon flux density on GPP in 2018 compared to 2016, which contributed to reduced summer GPP in 2018. Our results demonstrate that high temperature-induced increases in VPD and decreases in SWC aggravated drought impacts on GPP. 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| fulltext | fulltext |
| identifier | ISSN: 0962-8436 |
| ispartof | Philosophical transactions of the Royal Society of London. Series B. Biological sciences, 2020-10, Vol.375 (1810), p.20190747-20190747 |
| issn | 0962-8436 1471-2970 1471-2970 |
| language | eng |
| recordid | cdi_swepub_primary_oai_slubar_slu_se_108063 |
| source | Jstor Complete Legacy; MEDLINE; PubMed Central |
| subjects | Atmosphere - analysis Climate Change Climate Research Droughts Environmental Sciences Europe Forests Grassland Klimatforskning Plant Physiological Phenomena Seasons |
| title | Sensitivity of gross primary productivity to climatic drivers during the summer drought of 2018 in Europe |
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