n-Alkane Distributions of Modern Plants from C3-Dominated Eastern African Ecosystems
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PANGAEA
2025
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| _version_ | 1867168237757661184 |
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| author | Tweedy, Ruth Strömberg, Caroline A E Reichgelt, Tammo Kinyanjui, Rahab N Kimeu, Mbaluka Munyaka, Venanzio Uno, Kevin |
| author_facet | Tweedy, Ruth Strömberg, Caroline A E Reichgelt, Tammo Kinyanjui, Rahab N Kimeu, Mbaluka Munyaka, Venanzio Uno, Kevin |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This dataset comprises plant wax n-alkane chain length concentrations and C25-C35 relative abundances of 209 plant specimens from two Kenyan C3-dominated ecosystems, representing a wide range of plant functional types (PFTs). Plant samples were collected in 2018 from Mount Kenya National Park (n=122) and Kakamega National Forest (n=87). At Mount Kenya National Park, samples were collected along an elevational transect (~2400 m to ~3600 m above sea level) from five different ecotones: lower montane forest, bamboo zone, upper montane forest, ericaceous shrubland belt and Afroalpine moorland. Kakamega National Forest is ~1600m above sea level and samples were collected from an open glade, forest path edge, and closed canopy forest. All plant samples were identified to family level, most to genus or species level. Information on collection habitat, photosynthetic pathway, and plant functional type are included. The goal of this dataset was to assess n-alkane distributions for chemotaxonomic signals. Sample analysis took place at Lamont-Doherty Earth Observatory and Harvard University between 2022-2024. n-Alkane data were quantified using a gas chromatograph mass selective detector (GC-MSD) and a flame ionization detector (FID), and response factor corrections were calculated and applied to measured n-alkane peak areas in order to calculate corrected concentrations. The odd n-alkane C25-C35 concentrations were relativized to sum to 1 for the final relative abundance data. For more detailed information, please consult the associated manuscript on the n-alkane distributions and their chemotaxonomic significance: Tweedy et al., 2025. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_983453 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | n-Alkane Distributions of Modern Plants from C3-Dominated Eastern African Ecosystems Tweedy, Ruth Strömberg, Caroline A E Reichgelt, Tammo Kinyanjui, Rahab N Kimeu, Mbaluka Munyaka, Venanzio Uno, Kevin Additional information; Africa; alkanes; Average chain length, odd; C3; Carbon Preference Index, n-Alkanes (C25-C35); DATE/TIME; distribution; ELEVATION; Event label; Family; Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS); grass; Growth form; HAND; Kakamega Forest, Western Kenya; Kenya; KPSS_2018_Kakamega; KPSS_2018_MountKenya; LATITUDE; LONGITUDE; Microhabitat; Mt. Kenya, Kenya, Africa; n-Alkane C10, per unit sediment mass; n-Alkane C11, per unit sediment mass; n-Alkane C12, per unit sediment mass; n-Alkane C13, per unit sediment mass; n-Alkane C14, per unit sediment mass; n-Alkane C16, per unit sediment mass; n-Alkane C17, per unit sediment mass; n-Alkane C18, per unit sediment mass; n-Alkane C19, per unit sediment mass; n-Alkane C20, per unit sediment mass; n-Alkane C21, per unit sediment mass; n-Alkane C22, per unit sediment mass; n-Alkane C23, per unit sediment mass; n-Alkane C24, per unit sediment mass; n-Alkane C25, fractional abundance; n-Alkane C25, per unit sediment mass; n-Alkane C26, per unit sediment mass; n-Alkane C27, fractional abundance; n-Alkane C27, per unit sediment mass; n-Alkane C28, per unit sediment mass; n-Alkane C29, fractional abundance; n-Alkane C29, per unit sediment mass; n-Alkane C30, per unit sediment mass; n-Alkane C31, fractional abundance; n-Alkane C31, per unit sediment mass; n-Alkane C32, per unit sediment mass; n-Alkane C33, fractional abundance; n-Alkane C33, per unit sediment mass; n-Alkane C34, per unit sediment mass; n-Alkane C35, per unit sediment mass; n-Alkane C36, per unit sediment mass; n-Alkane C37, per unit sediment mass; n-Alkane C38, per unit sediment mass; n-Alkane C39, per unit sediment mass; n-Alkane C40, per unit sediment mass; n-Pentadecane, per unit sediment mass; n-Pentatriacontane, fractional abundance; Photosynthetic pathway; Plant wax; proxy; Sample code/label; Sampling by hand; Species; Subfamily; Sum n-alkanes C25-C35, per unit sediment mass; Vegetation type; World Flora Online This dataset comprises plant wax n-alkane chain length concentrations and C25-C35 relative abundances of 209 plant specimens from two Kenyan C3-dominated ecosystems, representing a wide range of plant functional types (PFTs). Plant samples were collected in 2018 from Mount Kenya National Park (n=122) and Kakamega National Forest (n=87). At Mount Kenya National Park, samples were collected along an elevational transect (~2400 m to ~3600 m above sea level) from five different ecotones: lower montane forest, bamboo zone, upper montane forest, ericaceous shrubland belt and Afroalpine moorland. Kakamega National Forest is ~1600m above sea level and samples were collected from an open glade, forest path edge, and closed canopy forest. All plant samples were identified to family level, most to genus or species level. Information on collection habitat, photosynthetic pathway, and plant functional type are included. The goal of this dataset was to assess n-alkane distributions for chemotaxonomic signals. Sample analysis took place at Lamont-Doherty Earth Observatory and Harvard University between 2022-2024. n-Alkane data were quantified using a gas chromatograph mass selective detector (GC-MSD) and a flame ionization detector (FID), and response factor corrections were calculated and applied to measured n-alkane peak areas in order to calculate corrected concentrations. The odd n-alkane C25-C35 concentrations were relativized to sum to 1 for the final relative abundance data. For more detailed information, please consult the associated manuscript on the n-alkane distributions and their chemotaxonomic significance: Tweedy et al., 2025. |
| title | n-Alkane Distributions of Modern Plants from C3-Dominated Eastern African Ecosystems |
| topic | Additional information; Africa; alkanes; Average chain length, odd; C3; Carbon Preference Index, n-Alkanes (C25-C35); DATE/TIME; distribution; ELEVATION; Event label; Family; Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS); grass; Growth form; HAND; Kakamega Forest, Western Kenya; Kenya; KPSS_2018_Kakamega; KPSS_2018_MountKenya; LATITUDE; LONGITUDE; Microhabitat; Mt. Kenya, Kenya, Africa; n-Alkane C10, per unit sediment mass; n-Alkane C11, per unit sediment mass; n-Alkane C12, per unit sediment mass; n-Alkane C13, per unit sediment mass; n-Alkane C14, per unit sediment mass; n-Alkane C16, per unit sediment mass; n-Alkane C17, per unit sediment mass; n-Alkane C18, per unit sediment mass; n-Alkane C19, per unit sediment mass; n-Alkane C20, per unit sediment mass; n-Alkane C21, per unit sediment mass; n-Alkane C22, per unit sediment mass; n-Alkane C23, per unit sediment mass; n-Alkane C24, per unit sediment mass; n-Alkane C25, fractional abundance; n-Alkane C25, per unit sediment mass; n-Alkane C26, per unit sediment mass; n-Alkane C27, fractional abundance; n-Alkane C27, per unit sediment mass; n-Alkane C28, per unit sediment mass; n-Alkane C29, fractional abundance; n-Alkane C29, per unit sediment mass; n-Alkane C30, per unit sediment mass; n-Alkane C31, fractional abundance; n-Alkane C31, per unit sediment mass; n-Alkane C32, per unit sediment mass; n-Alkane C33, fractional abundance; n-Alkane C33, per unit sediment mass; n-Alkane C34, per unit sediment mass; n-Alkane C35, per unit sediment mass; n-Alkane C36, per unit sediment mass; n-Alkane C37, per unit sediment mass; n-Alkane C38, per unit sediment mass; n-Alkane C39, per unit sediment mass; n-Alkane C40, per unit sediment mass; n-Pentadecane, per unit sediment mass; n-Pentatriacontane, fractional abundance; Photosynthetic pathway; Plant wax; proxy; Sample code/label; Sampling by hand; Species; Subfamily; Sum n-alkanes C25-C35, per unit sediment mass; Vegetation type; World Flora Online |
| url | https://doi.org/10.1594/PANGAEA.983453 |