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| dc.contributor | Benavides Duque, Juan Carlos | |
| dc.contributor | Devia, Carlos | |
| dc.contributor | Figueroa, Ilba | |
| dc.creator | Rocha Cárdenas, David Santiago | |
| dc.date | 2021-07-13T03:59:23Z | |
| dc.date | 2021-07-13T03:59:23Z | |
| dc.date | 2021-06-25 | |
| dc.date.accessioned | 2023-03-20T21:13:21Z | |
| dc.date.available | 2023-03-20T21:13:21Z | |
| dc.identifier | http://hdl.handle.net/10554/54753 | |
| dc.identifier | instname:Pontificia Universidad Javeriana | |
| dc.identifier | reponame:Repositorio Institucional - Pontificia Universidad Javeriana | |
| dc.identifier | repourl:https://repository.javeriana.edu.co | |
| dc.identifier.uri | https://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/225015 | |
| dc.description | Methane is the second most important anthropogenic GHG both in terms of global warming potential and global climatic impacts. There is an observed increase of the atmospheric concentration of CH4 since 2007. The magnitude of CH4 fluxes either from sources or sinks is characterized by large uncertainties, the tropical regions have the largest uncertainties and largest emissions, and tropical wetlands seem to be responsible for the largest uncertainty from all the CH4 emissions sources. Here, I quantified for first time methane emissions from 4 high elevation peatlands in the tropical wet Andes over a 5-year period, I also examined the environmental conditions affecting methane emissions as water table level, air and soil temperature and vegetation on the 4 sites. I found that in overall the peatlands act as sources of CH4 (206.78 ± 415 μg CH4 m-2h- 1) when the peatlands are dry out and in less magnitude as sinks (-160.97 ± 209 μg CH4 m-2h-1) Dryer sites act as a source of CH4 (5.80 ± 14 μg CH4 m-2h-1). A heavily disturbed peatland at the Calostros site has the largest uptake, and this is in part due to the variations in the hydrological status (water table depth) the lowest emission was at a cushion plant dominated peatland at high elevation (4.200 m.a.s.l.). I found that the main factor influencing the response of CH4 fluxes is the depth of the water table. Our preliminary dataset provides insights into the magnitude of methane emissions from neotropical ecosystems of the Colombian paramo and its relevance on the national GHG inventories.Methane is the second most important anthropogenic GHG both in terms of global warming potential and global climatic impacts. There is an observed increase of the atmospheric concentration of CH4 since 2007. The magnitude of CH4 fluxes either from sources or sinks is characterized by large uncertainties, the tropical regions have the largest uncertainties and largest emissions, and tropical wetlands seem to be responsible for the largest uncertainty from all the CH4 emissions sources. Here, I quantified for first time methane emissions from 4 high elevation peatlands in the tropical wet Andes over a 5-year period, I also examined the environmental conditions affecting methane emissions as water table level, air and soil temperature and vegetation on the 4 sites. I found that in overall the peatlands act as sources of CH4 (206.78 ± 415 μg CH4 m-2h- 1) when the peatlands are dry out and in less magnitude as sinks (-160.97 ± 209 μg CH4 m-2h-1) Dryer sites act as a source of CH4 (5.80 ± 14 μg CH4 m-2h-1). A heavily disturbed peatland at the Calostros site has the largest uptake, and this is in part due to the variations in the hydrological status (water table depth) the lowest emission was at a cushion plant dominated peatland at high elevation (4.200 m.a.s.l.). I found that the main factor influencing the response of CH4 fluxes is the depth of the water table. Our preliminary dataset provides insights into the magnitude of methane emissions from neotropical ecosystems of the Colombian paramo and its relevance on the national GHG inventories. | |
| dc.description | Instituto de Estudios Ambientales y Metereológicos Ideam | |
| dc.description | Methane is the second most important anthropogenic GHG both in terms of global warming potential and global climatic impacts. There is an observed increase of the atmospheric concentration of CH4 since 2007. The magnitude of CH4 fluxes either from sources or sinks is characterized by large uncertainties, the tropical regions have the largest uncertainties and largest emissions, and tropical wetlands seem to be responsible for the largest uncertainty from all the CH4 emissions sources. Here, I quantified for first time methane emissions from 4 high elevation peatlands in the tropical wet Andes over a 5-year period, I also examined the environmental conditions affecting methane emissions as water table level, air and soil temperature and vegetation on the 4 sites. I found that in overall the peatlands act as sources of CH4 (206.78 ± 415 μg CH4 m-2h- 1) when the peatlands are dry out and in less magnitude as sinks (-160.97 ± 209 μg CH4 m-2h-1) Dryer sites act as a source of CH4 (5.80 ± 14 μg CH4 m-2h-1). A heavily disturbed peatland at the Calostros site has the largest uptake, and this is in part due to the variations in the hydrological status (water table depth) the lowest emission was at a cushion plant dominated peatland at high elevation (4.200 m.a.s.l.). I found that the main factor influencing the response of CH4 fluxes is the depth of the water table. Our preliminary dataset provides insights into the magnitude of methane emissions from neotropical ecosystems of the Colombian paramo and its relevance on the national GHG inventories. | |
| dc.description | Ecólogo (a) | |
| dc.description | Pregrado | |
| dc.format | ||
| dc.format | application/pdf | |
| dc.format | application/pdf | |
| dc.format | application/pdf | |
| dc.format | application/pdf | |
| dc.language | spa | |
| dc.publisher | Pontificia Universidad Javeriana | |
| dc.publisher | Ecología | |
| dc.publisher | Facultad de Estudios Ambientales y Rurales | |
| dc.rights | Atribución-NoComercial-SinDerivadas 4.0 Internacional | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | De acuerdo con la naturaleza del uso concedido, la presente licencia parcial se otorga a título gratuito por el máximo tiempo legal colombiano, con el propósito de que en dicho lapso mi (nuestra) obra sea explotada en las condiciones aquí estipuladas y para los fines indicados, respetando siempre la titularidad de los derechos patrimoniales y morales correspondientes, de acuerdo con los usos honrados, de manera proporcional y justificada a la finalidad perseguida, sin ánimo de lucro ni de comercialización. De manera complementaria, garantizo (garantizamos) en mi (nuestra) calidad de estudiante (s) y por ende autor (es) exclusivo (s), que la Tesis o Trabajo de Grado en cuestión, es producto de mi (nuestra) plena autoría, de mi (nuestro) esfuerzo personal intelectual, como consecuencia de mi (nuestra) creación original particular y, por tanto, soy (somos) el (los) único (s) titular (es) de la misma. Además, aseguro (aseguramos) que no contiene citas, ni transcripciones de otras obras protegidas, por fuera de los límites autorizados por la ley, según los usos honrados, y en proporción a los fines previstos; ni tampoco contempla declaraciones difamatorias contra terceros; respetando el derecho a la imagen, intimidad, buen nombre y demás derechos constitucionales. Adicionalmente, manifiesto (manifestamos) que no se incluyeron expresiones contrarias al orden público ni a las buenas costumbres. En consecuencia, la responsabilidad directa en la elaboración, presentación, investigación y, en general, contenidos de la Tesis o Trabajo de Grado es de mí (nuestro) competencia exclusiva, eximiendo de toda responsabilidad a la Pontifica Universidad Javeriana por tales aspectos. Sin perjuicio de los usos y atribuciones otorgadas en virtud de este documento, continuaré (continuaremos) conservando los correspondientes derechos patrimoniales sin modificación o restricción alguna, puesto que, de acuerdo con la legislación colombiana aplicable, el presente es un acuerdo jurídico que en ningún caso conlleva la enajenación de los derechos patrimoniales derivados del régimen del Derecho de Autor. De conformidad con lo establecido en el artículo 30 de la Ley 23 de 1982 y el artículo 11 de la Decisión Andina 351 de 1993, "Los derechos morales sobre el trabajo son propiedad de los autores", los cuales son irrenunciables, imprescriptibles, inembargables e inalienables. En consecuencia, la Pontificia Universidad Javeriana está en la obligación de RESPETARLOS Y HACERLOS RESPETAR, para lo cual tomará las medidas correspondientes para garantizar su observancia. | |
| dc.rights | http://purl.org/coar/access_right/c_abf2 | |
| dc.subject | Turberas de elevación | |
| dc.subject | Metano | |
| dc.subject | Gases de efecto invernadero | |
| dc.subject | Estado hidrológico | |
| dc.subject | High elevation peatlands | |
| dc.subject | Methane | |
| dc.subject | Greenhouse gas flux | |
| dc.subject | Hydrological status | |
| dc.subject | Ecología - Tesis y disertaciones académicas | |
| dc.subject | Turberas de elevación | |
| dc.subject | Metano - Descomposición | |
| dc.subject | Ciclo hidrológico | |
| dc.title | Methane emissions from high elevation peatlands in the colombian andes | |
| dc.title | Methane emissions from high elevation peatlands in the colombian andes | |
| dc.type | http://purl.org/coar/version/c_ab4af688f83e57aa | |
| dc.type | Tesis/Trabajo de grado - Monografía - Pregrado | |
| dc.type | http://purl.org/coar/resource_type/c_7a1f | |
| dc.type | info:eu-repo/semantics/bachelorThesis | |
| dc.coverage | Colombia |
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