Paloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, Colombia
Oilbird Guano sediment cores represent novel archives to reconstruct past terrestrial environments. "delta c thirteen" stable carbon isotope data, as well as carbon and nitrogen concentrations measured of a sediment core from the Cueva de los Guácharos (Huila, Colombia), enable us to appro...
- Autores:
-
Martínez Medina, Nathalie Melissa
- Tipo de recurso:
- Trabajo de grado de pregrado
- Fecha de publicación:
- 2018
- Institución:
- Universidad de los Andes
- Repositorio:
- Séneca: repositorio Uniandes
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.uniandes.edu.co:1992/39827
- Acceso en línea:
- http://hdl.handle.net/1992/39827
- Palabra clave:
- Paleoclimatología
Guácharos
Guano
Ecología de cuevas
Geociencias
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-nc-sa/4.0/
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| dc.title.es_CO.fl_str_mv |
Paloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, Colombia |
| title |
Paloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, Colombia |
| spellingShingle |
Paloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, Colombia Paleoclimatología Guácharos Guano Ecología de cuevas Geociencias |
| title_short |
Paloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, Colombia |
| title_full |
Paloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, Colombia |
| title_fullStr |
Paloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, Colombia |
| title_full_unstemmed |
Paloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, Colombia |
| title_sort |
Paloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, Colombia |
| dc.creator.fl_str_mv |
Martínez Medina, Nathalie Melissa |
| dc.contributor.advisor.none.fl_str_mv |
González Arango, Catalina |
| dc.contributor.author.none.fl_str_mv |
Martínez Medina, Nathalie Melissa |
| dc.contributor.jury.none.fl_str_mv |
Stevenson Díaz, Pablo Roberto |
| dc.subject.keyword.es_CO.fl_str_mv |
Paleoclimatología Guácharos Guano Ecología de cuevas |
| topic |
Paleoclimatología Guácharos Guano Ecología de cuevas Geociencias |
| dc.subject.themes.none.fl_str_mv |
Geociencias |
| description |
Oilbird Guano sediment cores represent novel archives to reconstruct past terrestrial environments. "delta c thirteen" stable carbon isotope data, as well as carbon and nitrogen concentrations measured of a sediment core from the Cueva de los Guácharos (Huila, Colombia), enable us to approach to the precipitation regime of the past 700 years by disentangling the oilbirds (Steatornis caripensis) population dynamics in relation to its dietary preferences (Lauraceae and Arecaceae) as well as carbon and nitrogen fluxes. Methodological considerations and calcium variability were addressed by the comparison of two independent analytical methods (X-ray fluorescence vs. and elemental analyzer). Distinct d13C values within the C3 carbon metabolic pathway are proposed for Lauraceae (-28.5%) and Aracaceae (-29.6%). A positive correlation between "delta c thirteen" values and precipitation was inferred based on Lauraceae fructification seasonality coupled with the oilbirds reproductive period and peak guano deposition into the cave. Comparison of reconstructed paleoprecipitations of Cariaco basin (Venezuela), El Peñon (Santander) and Ubaque (Cundinamarca) demonstrate that the LIA and the CWP were significant drier climate anomalies in the region, dominated by distinct processes, the southward excursion of the ITCZ and establishment of El Niño conditions, respectively. Variations in the guano record suggest local climatic processes due to its proximity to The Amazonia |
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2018 |
| dc.date.issued.none.fl_str_mv |
2018 |
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2020-06-10T16:34:22Z |
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2020-06-10T16:34:22Z |
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Trabajo de grado - Pregrado |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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info:eu-repo/semantics/bachelorThesis |
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http://purl.org/coar/resource_type/c_7a1f |
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Text |
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http://purl.org/redcol/resource_type/TP |
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http://purl.org/coar/resource_type/c_7a1f |
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http://hdl.handle.net/1992/39827 |
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u807258.pdf |
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instname:Universidad de los Andes |
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reponame:Repositorio Institucional Séneca |
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repourl:https://repositorio.uniandes.edu.co/ |
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http://hdl.handle.net/1992/39827 |
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u807258.pdf instname:Universidad de los Andes reponame:Repositorio Institucional Séneca repourl:https://repositorio.uniandes.edu.co/ |
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eng |
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eng |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ |
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info:eu-repo/semantics/openAccess |
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34 hojas |
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application/pdf |
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Universidad de los Andes |
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Geociencias |
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Facultad de Ciencias |
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Departamento de Geociencias |
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Al consultar y hacer uso de este recurso, está aceptando las condiciones de uso establecidas por los autores.http://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2González Arango, Catalinavirtual::9218-1Martínez Medina, Nathalie Melissae3c115a4-e003-46cb-8c23-b3a39c7f400c600Stevenson Díaz, Pablo Roberto2020-06-10T16:34:22Z2020-06-10T16:34:22Z2018http://hdl.handle.net/1992/39827u807258.pdfinstname:Universidad de los Andesreponame:Repositorio Institucional Sénecarepourl:https://repositorio.uniandes.edu.co/Oilbird Guano sediment cores represent novel archives to reconstruct past terrestrial environments. "delta c thirteen" stable carbon isotope data, as well as carbon and nitrogen concentrations measured of a sediment core from the Cueva de los Guácharos (Huila, Colombia), enable us to approach to the precipitation regime of the past 700 years by disentangling the oilbirds (Steatornis caripensis) population dynamics in relation to its dietary preferences (Lauraceae and Arecaceae) as well as carbon and nitrogen fluxes. Methodological considerations and calcium variability were addressed by the comparison of two independent analytical methods (X-ray fluorescence vs. and elemental analyzer). Distinct d13C values within the C3 carbon metabolic pathway are proposed for Lauraceae (-28.5%) and Aracaceae (-29.6%). A positive correlation between "delta c thirteen" values and precipitation was inferred based on Lauraceae fructification seasonality coupled with the oilbirds reproductive period and peak guano deposition into the cave. Comparison of reconstructed paleoprecipitations of Cariaco basin (Venezuela), El Peñon (Santander) and Ubaque (Cundinamarca) demonstrate that the LIA and the CWP were significant drier climate anomalies in the region, dominated by distinct processes, the southward excursion of the ITCZ and establishment of El Niño conditions, respectively. Variations in the guano record suggest local climatic processes due to its proximity to The AmazoniaLos núcleos de guano de Guacharos representan novedosos archivos para reconstruir los ambientes terrestres del pasado. Los datos de isótopos estables de carbono "delta c trece", así como las concentraciones de carbono y nitrógeno medidas de un núcleo de sedimentos de la Cueva de los Guácharos (Huila, Colombia), nos permiten aproximarnos al régimen de precipitación de los últimos 700 años desenredando la dinámica de la población de guácharos (Steatornis caripensis) en relación a sus frutos preferidos (Lauraceae y Arecaceae), así como los flujos de carbono y nitrógeno. Las consideraciones metodológicas y la variabilidad del calcio se abordaron mediante la comparación de dos métodos analíticos independientes (fluorescencia de rayos X frente a analizador elemental). Distintos valores de "delta c trece" dentro de la ruta metabólica de carbono C3 se proponen para las familias Lauraceae (-28.5%) y Aracaceae (-29.6%). Con base en la estacionalidad en la fructificación de Lauraceae, junto con el período reproductivo de los guácharos y el pico de deposición de guano en la cueva, se infirió una correlación positiva entre los valores de "delta c trece" y la precipitación. La comparación con las paleoprecipitaciones reconstruidas de la cuenca Cariaco (Venezuela), El Peñón (Santander) y Ubaque (Cundinamarca) demostró que los periodos LIA y CWP fueron anomalías climáticas regionales significativamente más secas, dominadas por distintos procesos, la excursión hacia el sur de la ITCZ y el establecimiento de las condiciones de El Niño, respectivamente. Las variaciones en el registro de guano sugieren procesos climáticos locales debido a su proximidad a La Amazonia.GeocientíficoPregrado34 hojasapplication/pdfengUniversidad de los AndesGeocienciasFacultad de CienciasDepartamento de Geocienciasinstname:Universidad de los Andesreponame:Repositorio Institucional SénecaPaloenvironmental reconstruction using "delta c thirteen" and elemental analyses of a 700 year guano core from Cueva de los Guácharos, ColombiaTrabajo de grado - Pregradoinfo:eu-repo/semantics/bachelorThesishttp://purl.org/coar/resource_type/c_7a1fhttp://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/TPPaleoclimatologíaGuácharosGuanoEcología de cuevasGeocienciasPublicationhttps://scholar.google.es/citations?user=KvbIIjYAAAAJvirtual::9218-10000-0003-1709-4405virtual::9218-1https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0000446483virtual::9218-1b21dcbea-1189-4504-97e4-3a89a45dba17virtual::9218-1b21dcbea-1189-4504-97e4-3a89a45dba17virtual::9218-1TEXTu807258.pdf.txtu807258.pdf.txtExtracted texttext/plain54469https://repositorio.uniandes.edu.co/bitstreams/b3c13d4e-6637-4885-bfd8-fe5b68ff4f49/download72a21c15c6d2b3656b6d377522eabf61MD54ORIGINALu807258.pdfapplication/pdf1713839https://repositorio.uniandes.edu.co/bitstreams/08bc28f7-9c68-4a94-bfbc-4cad6573ad47/download2c07eb4b5889dc2ada01bc88bd138df4MD51THUMBNAILu807258.pdf.jpgu807258.pdf.jpgIM Thumbnailimage/jpeg7364https://repositorio.uniandes.edu.co/bitstreams/fcebac4f-4cb4-48ba-8121-701bb2c58f08/download72cad19fb282fac96c8bedca06405f2bMD551992/39827oai:repositorio.uniandes.edu.co:1992/398272024-03-13 13:52:42.537http://creativecommons.org/licenses/by-nc-sa/4.0/open.accesshttps://repositorio.uniandes.edu.coRepositorio institucional Sénecaadminrepositorio@uniandes.edu.co |