Tall Amazonian forests are less sensitive to precipitation variability
Climate change is altering the dynamics, structure and function of the Amazon, a biome deeply connected to the Earth’s carbon cycle. Climate factors that control the spatial and temporal variations in forest photosynthesis have been well studied, but the influence of forest height and age on this co...
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Veröffentlicht in: | Nature geoscience 2018-06, Vol.11 (6), p.405-409 |
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creator | Giardina, Francesco Konings, Alexandra G. Kennedy, Daniel Alemohammad, Seyed Hamed Oliveira, Rafael S. Uriarte, Maria Gentine, Pierre |
description | Climate change is altering the dynamics, structure and function of the Amazon, a biome deeply connected to the Earth’s carbon cycle. Climate factors that control the spatial and temporal variations in forest photosynthesis have been well studied, but the influence of forest height and age on this controlling effect has rarely been considered. Here, we present remote sensing observations of solar-induced fluorescence (a proxy for photosynthesis), precipitation, vapour-pressure deficit and canopy height, together with estimates of forest age and aboveground biomass. We show that photosynthesis in tall Amazonian forests, that is, forests above 30 m, is three times less sensitive to precipitation variability than in shorter (less than 20 m) forests. Taller Amazonian forests are also found to be older, have more biomass and deeper rooting systems
1
, which enable them to access deeper soil moisture and make them more resilient to drought. We suggest that forest height and age are an important control of photosynthesis in response to interannual precipitation fluctuations. Although older and taller trees show less sensitivity to precipitation variations, they are more susceptible to fluctuations in vapour-pressure deficit. Our findings illuminate the response of Amazonian forests to water stress, droughts and climate change.
Tall trees are less sensitive to variation in precipitation than short trees, according to analyses of photosynthetic sensitivity to drought in tall and short Amazon forests. The results demonstrate higher resilience of tall trees to drought. |
doi_str_mv | 10.1038/s41561-018-0133-5 |
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1
, which enable them to access deeper soil moisture and make them more resilient to drought. We suggest that forest height and age are an important control of photosynthesis in response to interannual precipitation fluctuations. Although older and taller trees show less sensitivity to precipitation variations, they are more susceptible to fluctuations in vapour-pressure deficit. Our findings illuminate the response of Amazonian forests to water stress, droughts and climate change.
Tall trees are less sensitive to variation in precipitation than short trees, according to analyses of photosynthetic sensitivity to drought in tall and short Amazon forests. The results demonstrate higher resilience of tall trees to drought.</description><identifier>ISSN: 1752-0894</identifier><identifier>EISSN: 1752-0908</identifier><identifier>DOI: 10.1038/s41561-018-0133-5</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>704/106/694 ; 704/158/2454 ; 704/172/4081 ; Age ; Biomass ; Carbon cycle ; Climate change ; Climate variability ; Drought ; Dynamics ; Earth ; Earth and Environmental Science ; Earth Sciences ; Earth System Sciences ; Fluctuations ; Fluorescence ; Forests ; Geochemistry ; Geology ; Geophysics/Geodesy ; Height ; Photosynthesis ; Plant cover ; Precipitation ; Precipitation variability ; Precipitation variations ; Pressure ; Remote sensing ; Rooting ; Soil ; Soil moisture ; Structure-function relationships ; Temporal variations ; Water stress</subject><ispartof>Nature geoscience, 2018-06, Vol.11 (6), p.405-409</ispartof><rights>The Author(s) 2018</rights><rights>Copyright Nature Publishing Group Jun 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c382t-731f394f28294946fa63b1372776f78c68f44d67b68efc5a96d84d15638bf53f3</citedby><cites>FETCH-LOGICAL-c382t-731f394f28294946fa63b1372776f78c68f44d67b68efc5a96d84d15638bf53f3</cites><orcidid>0000-0002-2810-1722 ; 0000-0001-5662-3643 ; 0000-0002-6392-2526</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Giardina, Francesco</creatorcontrib><creatorcontrib>Konings, Alexandra G.</creatorcontrib><creatorcontrib>Kennedy, Daniel</creatorcontrib><creatorcontrib>Alemohammad, Seyed Hamed</creatorcontrib><creatorcontrib>Oliveira, Rafael S.</creatorcontrib><creatorcontrib>Uriarte, Maria</creatorcontrib><creatorcontrib>Gentine, Pierre</creatorcontrib><title>Tall Amazonian forests are less sensitive to precipitation variability</title><title>Nature geoscience</title><addtitle>Nature Geosci</addtitle><description>Climate change is altering the dynamics, structure and function of the Amazon, a biome deeply connected to the Earth’s carbon cycle. Climate factors that control the spatial and temporal variations in forest photosynthesis have been well studied, but the influence of forest height and age on this controlling effect has rarely been considered. Here, we present remote sensing observations of solar-induced fluorescence (a proxy for photosynthesis), precipitation, vapour-pressure deficit and canopy height, together with estimates of forest age and aboveground biomass. We show that photosynthesis in tall Amazonian forests, that is, forests above 30 m, is three times less sensitive to precipitation variability than in shorter (less than 20 m) forests. Taller Amazonian forests are also found to be older, have more biomass and deeper rooting systems
1
, which enable them to access deeper soil moisture and make them more resilient to drought. We suggest that forest height and age are an important control of photosynthesis in response to interannual precipitation fluctuations. Although older and taller trees show less sensitivity to precipitation variations, they are more susceptible to fluctuations in vapour-pressure deficit. Our findings illuminate the response of Amazonian forests to water stress, droughts and climate change.
Tall trees are less sensitive to variation in precipitation than short trees, according to analyses of photosynthetic sensitivity to drought in tall and short Amazon forests. The results demonstrate higher resilience of tall trees to drought.</description><subject>704/106/694</subject><subject>704/158/2454</subject><subject>704/172/4081</subject><subject>Age</subject><subject>Biomass</subject><subject>Carbon cycle</subject><subject>Climate change</subject><subject>Climate variability</subject><subject>Drought</subject><subject>Dynamics</subject><subject>Earth</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Earth System Sciences</subject><subject>Fluctuations</subject><subject>Fluorescence</subject><subject>Forests</subject><subject>Geochemistry</subject><subject>Geology</subject><subject>Geophysics/Geodesy</subject><subject>Height</subject><subject>Photosynthesis</subject><subject>Plant cover</subject><subject>Precipitation</subject><subject>Precipitation variability</subject><subject>Precipitation variations</subject><subject>Pressure</subject><subject>Remote sensing</subject><subject>Rooting</subject><subject>Soil</subject><subject>Soil moisture</subject><subject>Structure-function relationships</subject><subject>Temporal variations</subject><subject>Water stress</subject><issn>1752-0894</issn><issn>1752-0908</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kE9LAzEQxYMoWKsfwFvA82r-Z_ZYilWh4KWeQ3abSMp2sybbQv30Rlbx5GGYObw3M--H0C0l95RweMiCSkUrQqEU55U8QzOqJatITeD8d4ZaXKKrnHeEKCK0nKHVxnYdXuztZ-yD7bGPyeUxY5sc7lzOOLs-hzEcHR4jHpJrwxBGO4bY46NNwTahC-PpGl1422V389Pn6G31uFk-V-vXp5flYl21HNhYaU49r4VnwGpRC-Wt4g3lmmmtvIZWgRdiq3SjwPlW2lptQWxLMg6Nl9zzObqb9g4pfhzKp2YXD6kvJw0rgQCEIFBUdFK1KeacnDdDCnubToYS843LTLhMwWW-cRlZPGzy5KLt31362_y_6QvdpWyW</recordid><startdate>20180601</startdate><enddate>20180601</enddate><creator>Giardina, Francesco</creator><creator>Konings, Alexandra G.</creator><creator>Kennedy, Daniel</creator><creator>Alemohammad, Seyed Hamed</creator><creator>Oliveira, Rafael S.</creator><creator>Uriarte, Maria</creator><creator>Gentine, Pierre</creator><general>Nature Publishing Group UK</general><general>Nature Publishing Group</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7TG</scope><scope>7TN</scope><scope>7UA</scope><scope>8FE</scope><scope>8FH</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>LK8</scope><scope>M7P</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><orcidid>https://orcid.org/0000-0002-2810-1722</orcidid><orcidid>https://orcid.org/0000-0001-5662-3643</orcidid><orcidid>https://orcid.org/0000-0002-6392-2526</orcidid></search><sort><creationdate>20180601</creationdate><title>Tall Amazonian forests are less sensitive to precipitation variability</title><author>Giardina, Francesco ; 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Climate factors that control the spatial and temporal variations in forest photosynthesis have been well studied, but the influence of forest height and age on this controlling effect has rarely been considered. Here, we present remote sensing observations of solar-induced fluorescence (a proxy for photosynthesis), precipitation, vapour-pressure deficit and canopy height, together with estimates of forest age and aboveground biomass. We show that photosynthesis in tall Amazonian forests, that is, forests above 30 m, is three times less sensitive to precipitation variability than in shorter (less than 20 m) forests. Taller Amazonian forests are also found to be older, have more biomass and deeper rooting systems
1
, which enable them to access deeper soil moisture and make them more resilient to drought. We suggest that forest height and age are an important control of photosynthesis in response to interannual precipitation fluctuations. Although older and taller trees show less sensitivity to precipitation variations, they are more susceptible to fluctuations in vapour-pressure deficit. Our findings illuminate the response of Amazonian forests to water stress, droughts and climate change.
Tall trees are less sensitive to variation in precipitation than short trees, according to analyses of photosynthetic sensitivity to drought in tall and short Amazon forests. The results demonstrate higher resilience of tall trees to drought.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/s41561-018-0133-5</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0002-2810-1722</orcidid><orcidid>https://orcid.org/0000-0001-5662-3643</orcidid><orcidid>https://orcid.org/0000-0002-6392-2526</orcidid></addata></record> |
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subjects | 704/106/694 704/158/2454 704/172/4081 Age Biomass Carbon cycle Climate change Climate variability Drought Dynamics Earth Earth and Environmental Science Earth Sciences Earth System Sciences Fluctuations Fluorescence Forests Geochemistry Geology Geophysics/Geodesy Height Photosynthesis Plant cover Precipitation Precipitation variability Precipitation variations Pressure Remote sensing Rooting Soil Soil moisture Structure-function relationships Temporal variations Water stress |
title | Tall Amazonian forests are less sensitive to precipitation variability |
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