Estimate of atmospheric CO of the Bogotá city (Colombia), utilizing leaves of Ginkgo biloba L. (Ginkgoaceae)
DOI:
https://doi.org/10.17533/udea.acbi.329374Keywords:
global warming, greenhouse gases, paleoclimate, stomatal index, stomatal densityAbstract
Ginkgo biloba L. (Ginkgoaceae) is considered the last survivor of a group of plants which exhibited great diversity in the Mesozoic era, and is now considered a "living fosil". The individuals of this species are especially sensitive to the changes in the CO2 concentrations, showing an inverse relation with stomatal density. According to this, the stomatal pattern in G. biloba is not defined by the age of plants. Ginkgo biloba is not a native species but it presents a strong stomatal plasticity. In this study, thirty leaves were collected from three two-year specimens cultivated in the "Jardín Botánico José Celestino Mutis" in Bogotá. From the collected material, six leaves were selected randomly and were treated later with sodium hypochlorite. From each one of these leaves, three subsamples were taken at random. During this process, the adaxial cuticles were removed and colored with tionona for later observation through an optical microscope (400X). The stomatal density (X = 69.39 estomata/mm2; S = 16.93) and the stomatal index (X= 12.32; S = 3.68) were calculated. Based on historical data of CO2 concentrations and stomatal index a simple linear regression was elaborated (r = -0.99; p = 0.000) and the inverse equation was determined [CO2 = (SI - 33,427) / (-0.0704)]. Taking into account this procedure, it was estimated for Bogotá an atmospheric CO2 concentration between 381 and 384 parts per million (ppm.)
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References
Beerling D, Chaloner W, Huntley B, Pearson J, Toolei M,Woodward F. 1992. Variations in the stomatal densityof Salix herbacea L. under the changing atmosphericCO2 concentrations of late and post glacial time.Philosophical Transactions of the Royal Society ofLondon, B336:215-224.
Beerling D, McElwan J, Osborne C. 1998. Estomatalresponses of the "living fossil" Ginkgo biloba L. tochanges in atmospheric CO2 concentrations. Journalof Experimental Botany, 49:1603-1607.
Beerling D. 1999. Stomatal density and Index: theory andapplication. Pp. 251-256. En: Jones T, Rowe N (eds.).Fossils plants and spores: modern techniques.Geological Society, London. London.
Beerling D, Royer D. 2002. Reading a CO2 signal fromfossil stomata. New Phytologist, 153:387-397.
Chen L, Chaloner W, Beerling D, Sun Q, Collinson M,Mitchell P. 2001. Assessing the potential for thestomatal characters of extant and fossil Ginkgoleaves to signal atmospheric CO2 change. AmericanJournal of Botany, 88:1309-1315.
Jones HG. 1992. Plants and microclimate. A quantitativeapproach to plant physiology. Second edition.Cambridge University Press. Cambridge.
Kouwenberg L, McElwain J, Lurschner W, Wagner F,Beerling D, Mayle F, Visscher H. 2003. Stomatalfrequency adjustment of four conifer species tohistorical changes in atmospheric CO2. AmericanJournal of Botany, 90:610-619.
Keeling C, Whorf P. 2004. Atmospheric Carbon DioxideConcentrations. Scripps Institution ofOceanography. University of California, San Diego.
McElwain J, Chaloner W. 1995. Stomatal density and indexof fossil plants track atmospheric carbon dioxide inthe Paleozoic. Annals of Botany, 76:398-395.
Marland G, Boden T. 2005. The increasing concentrationof atmospheric CO2: How much. when, and why?Environmental Sciences Division. Oak Ridge,Tennessee National Laboratory.USA. <http://cdiac.ornl.gov/epubs/other/Sicilypaper.pdf>. Fechade consulta: 1 de noviembre de 2006.
Overdieck D, Strassemeyer J. 2005. Gas exchange ofGinkgo biloba leaves at different CO2 concentrationlevels. Flora, 200:159-167.
Royer D. 2001. Stomatal density and stomatal index asindicators of paleoatmosferic CO2 concentration.Review of Paleobotany and Palynology, 114:1-28.
Royer D, Berner R, Beerling D. 2001. Phanerozoicatmosferic CO2 change: Evaluating geochemical andpaleobiological approaches. Earth Science Reviews,54:349-392.
Royer D. 2003. Estimating latest Cretaceous and Tertiaryatmospheric CO2 from stomatal indices. GeologicalSociety of America, 369:79-93.
Royer D, Hickely L, Wing S. 2003. Ecologycalconservatism in the "living fossil" Ginkgo.Paleobiology, 29:84-104.
Salisbury E. 1927. On the causes and ecologicalsignificance or stomatal frequency, with specialreference to the woodland flora. PhilosophicalTransaction of the Royal Society of London,B216:1-65.
Trans P. 2007. Earth system research laboratory. Globalmonitoring division. Mauna Loa Observatory,Hawaii. <http://www.esrl.noaa.gov/gmd/ccgg/trends/>. Fecha de consulta: 16 de enero de 2007.
Woodward F, Bazzaz F. 1988. The responses of stomataldensity to CO2 partial pressure. Journal of Experi-mental Botany, 39:1771-1781.
Watson R. 2001. Cambio clim·tico. Informe de sÌntesis.OrganizaciÛn MetereolÛgica Mundial (OMM) y Gru-po Intergubernamental de Expertos sobre el CambioClim·tico PNUMA. Ginebra, Suiza.
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