Highly reactive light-dependent monoterpenes in the Amazon
Despite orders of magnitude difference in atmospheric reactivity and great diversity in biological functioning, little is known about monoterpene speciation in tropical forests. Here we report vertically resolved ambient air mixing ratios for 12 monoterpenes in a central Amazon rainforest including...
| Autor principal: | Jardine, Angela B. |
|---|---|
| Outros Autores: | Jardine, Kolby J., Fuentes, José D., Martin, Scot T., Martins, Giordane Augusto, Durgante, Flávia Machado, Carneiro, Vilany Matilla Colares, Higuchi, Niro, Manzi, Antônio Ocimar, Chambers, Jeffrey Quintin |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Geophysical Research Letters
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/15904 |
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oai:repositorio:1-15904 |
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oai:repositorio:1-15904 Highly reactive light-dependent monoterpenes in the Amazon Jardine, Angela B. Jardine, Kolby J. Fuentes, José D. Martin, Scot T. Martins, Giordane Augusto Durgante, Flávia Machado Carneiro, Vilany Matilla Colares Higuchi, Niro Manzi, Antônio Ocimar Chambers, Jeffrey Quintin Aerosols Atmospheric Aerosols Atmospheric Structure Forestry Mixing Ozone Photooxidation Photosynthesis Atmospheric Oxidation Forest Structure Ozonolysis Secondary Organic Aerosols Voc Emissions Monoterpenes Aerosol Composition Ambient Air Atmospheric Pollution Forest Canopy Light Effect Mixing Ratio Monoterpene Rainforest Tropical Forest Volatile Organic Compound Amazonia Despite orders of magnitude difference in atmospheric reactivity and great diversity in biological functioning, little is known about monoterpene speciation in tropical forests. Here we report vertically resolved ambient air mixing ratios for 12 monoterpenes in a central Amazon rainforest including observations of the highly reactive cis-β-ocimene (160 ppt), trans-β-ocimene (79 ppt), and terpinolene (32 ppt) which accounted for an estimated 21% of total monoterpene composition yet 55% of the upper canopy monoterpene ozonolysis rate. All 12 monoterpenes showed a mixing ratio peak in the upper canopy, with three demonstrating subcanopy peaks in 7 of 11 profiles. Leaf level emissions of highly reactive monoterpenes accounted for up to 1.9% of photosynthesis confirming light-dependent emissions across several Amazon tree genera. These results suggest that highly reactive monoterpenes play important antioxidant roles during photosynthesis in plants and serve as near-canopy sources of secondary organic aerosol precursors through atmospheric photooxidation via ozonolysis. © 2015. The Authors. 2020-05-19T21:03:21Z 2020-05-19T21:03:21Z 2015 Artigo https://repositorio.inpa.gov.br/handle/1/15904 10.1002/2014GL062573 en Volume 42, Número 5, Pags. 1576-1583 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Geophysical Research Letters |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Aerosols Atmospheric Aerosols Atmospheric Structure Forestry Mixing Ozone Photooxidation Photosynthesis Atmospheric Oxidation Forest Structure Ozonolysis Secondary Organic Aerosols Voc Emissions Monoterpenes Aerosol Composition Ambient Air Atmospheric Pollution Forest Canopy Light Effect Mixing Ratio Monoterpene Rainforest Tropical Forest Volatile Organic Compound Amazonia |
| spellingShingle |
Aerosols Atmospheric Aerosols Atmospheric Structure Forestry Mixing Ozone Photooxidation Photosynthesis Atmospheric Oxidation Forest Structure Ozonolysis Secondary Organic Aerosols Voc Emissions Monoterpenes Aerosol Composition Ambient Air Atmospheric Pollution Forest Canopy Light Effect Mixing Ratio Monoterpene Rainforest Tropical Forest Volatile Organic Compound Amazonia Jardine, Angela B. Highly reactive light-dependent monoterpenes in the Amazon |
| topic_facet |
Aerosols Atmospheric Aerosols Atmospheric Structure Forestry Mixing Ozone Photooxidation Photosynthesis Atmospheric Oxidation Forest Structure Ozonolysis Secondary Organic Aerosols Voc Emissions Monoterpenes Aerosol Composition Ambient Air Atmospheric Pollution Forest Canopy Light Effect Mixing Ratio Monoterpene Rainforest Tropical Forest Volatile Organic Compound Amazonia |
| description |
Despite orders of magnitude difference in atmospheric reactivity and great diversity in biological functioning, little is known about monoterpene speciation in tropical forests. Here we report vertically resolved ambient air mixing ratios for 12 monoterpenes in a central Amazon rainforest including observations of the highly reactive cis-β-ocimene (160 ppt), trans-β-ocimene (79 ppt), and terpinolene (32 ppt) which accounted for an estimated 21% of total monoterpene composition yet 55% of the upper canopy monoterpene ozonolysis rate. All 12 monoterpenes showed a mixing ratio peak in the upper canopy, with three demonstrating subcanopy peaks in 7 of 11 profiles. Leaf level emissions of highly reactive monoterpenes accounted for up to 1.9% of photosynthesis confirming light-dependent emissions across several Amazon tree genera. These results suggest that highly reactive monoterpenes play important antioxidant roles during photosynthesis in plants and serve as near-canopy sources of secondary organic aerosol precursors through atmospheric photooxidation via ozonolysis. © 2015. The Authors. |
| format |
Artigo |
| author |
Jardine, Angela B. |
| author2 |
Jardine, Kolby J. Fuentes, José D. Martin, Scot T. Martins, Giordane Augusto Durgante, Flávia Machado Carneiro, Vilany Matilla Colares Higuchi, Niro Manzi, Antônio Ocimar Chambers, Jeffrey Quintin |
| author2Str |
Jardine, Kolby J. Fuentes, José D. Martin, Scot T. Martins, Giordane Augusto Durgante, Flávia Machado Carneiro, Vilany Matilla Colares Higuchi, Niro Manzi, Antônio Ocimar Chambers, Jeffrey Quintin |
| title |
Highly reactive light-dependent monoterpenes in the Amazon |
| title_short |
Highly reactive light-dependent monoterpenes in the Amazon |
| title_full |
Highly reactive light-dependent monoterpenes in the Amazon |
| title_fullStr |
Highly reactive light-dependent monoterpenes in the Amazon |
| title_full_unstemmed |
Highly reactive light-dependent monoterpenes in the Amazon |
| title_sort |
highly reactive light-dependent monoterpenes in the amazon |
| publisher |
Geophysical Research Letters |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/15904 |
| _version_ |
1787145070279917568 |
| score |
11.755432 |