Plant Uptake of Atmospheric Carbonyl Sulfide in Coast Redwood Forests
| العنوان: | Plant Uptake of Atmospheric Carbonyl Sulfide in Coast Redwood Forests |
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| المؤلفون: | Andrew Zumkehr, J. E. Campbell, Mary E. Whelan, J. Stinecipher, Yaqiong Lu, Ian Baker, S. Kulkarni, U. Seibt, Ari Kornfeld, Timothy W. Hilton, Mark S. Zahniser, Todd E. Dawson, Michael E. Loik, Joseph A. Berry, Roisin Commane, Stephen A. Montzka, Scott C. Herndon, Yuting Wang |
| المصدر: | Journal of Geophysical Research: Biogeosciences. 122:3391-3404 |
| بيانات النشر: | American Geophysical Union (AGU), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 0106 biological sciences, Canopy, Atmospheric Science, Stomatal conductance, 010504 meteorology & atmospheric sciences, Sequoia, Soil Science, Aquatic Science, Atmospheric sciences, Photosynthesis, 01 natural sciences, chemistry.chemical_compound, Ecosystem, 0105 earth and related environmental sciences, Water Science and Technology, Carbonyl sulfide, Ecology, biology, Paleontology, Primary production, Forestry, biology.organism_classification, chemistry, Soil water, Environmental science, 010606 plant biology & botany |
| الوصف: | Author(s): Campbell, JE; Whelan, ME; Berry, JA; Hilton, TW; Zumkehr, A; Stinecipher, J; Lu, Y; Kornfeld, A; Seibt, U; Dawson, TE; Montzka, SA; Baker, IT; Kulkarni, S; Wang, Y; Herndon, SC; Zahniser, MS; Commane, R; Loik, ME | Abstract: The future resilience of coast redwoods (Sequoia sempervirens) is now of critical concern due to the detection of a 33% decline in California coastal fog over the 20th century. However, ecosystem-scale measurements of photosynthesis and stomatal conductance are challenging in coast redwood forests, making it difficult to anticipate the impacts of future changes in fog. To address this methodological problem, we explore coastal variations in atmospheric carbonyl sulfide (COS or OCS), which could potentially be used as a tracer of these ecosystem processes. We conducted atmospheric flask campaigns in coast redwood sites, sampling at surface heights and in the canopy (~70nm), at the University of California Landels-Hill Big Creek Reserve and Big Basin State Park. We simulated COS atmosphere-biosphere exchange with a high-resolution 3-D model to interpret these data. Flask measurements indicated a persistent daytime drawdown between the coast and the downwind forest (45n±n6nppt COS) that is consistent with the expected relationship between COS plant uptake, stomatal conductance, and gross primary production. Other sources and sinks of COS that could introduce noise to the COS tracer technique (soils, anthropogenic activity, nocturnal plant uptake, and surface hydrolysis on leaves) are likely to be small relative to daytime COS plant uptake. These results suggest that COS measurements may be useful for making ecosystem-scale estimates of carbon, water, and energy exchange in coast redwood forests. |
| تدمد: | 2169-8961 2169-8953 |
| DOI: | 10.1002/2016jg003703 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::6e796bfb45d63ccc9b690eb02562a500 https://doi.org/10.1002/2016jg003703 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........6e796bfb45d63ccc9b690eb02562a500 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21698961 21698953 |
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| DOI: | 10.1002/2016jg003703 |