Concentration and distribution of GDGTs in SPM from Lake Tanganyika
Fuente:
PANGAEA
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2012
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1867170078269636608 |
|---|---|
| author | Schouten, Stefan Rijpstra, W Irene C Durisch-Kaiser, Edith Schubert, Carsten J Sinninghe Damsté, Jaap S |
| author_facet | Schouten, Stefan Rijpstra, W Irene C Durisch-Kaiser, Edith Schubert, Carsten J Sinninghe Damsté, Jaap S |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We studied the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) in suspended particulate matter from the water column of Lake Tanganyika (East Africa), where sediment studies had shown the applicability of the TEX86 proxy for reconstructing surface lake water temperature. GDGTs, in particular crenarchaeol, showed maximum abundance within the suboxic zone (100-180 m), suggesting that this is the preferred niche of ammonia-oxidizing Thaumarchaeota. Despite evidence for anaerobic methane oxidation in deep anoxic water (300-1200 m) no unambiguous evidence for an imprint of methanotrophic archaea on GDGT distribution was found. Comparison of TEX86 and BIT indices with those of surface sediments suggests that the sedimentary GDGTs are derived predominantly from the oxic zone and suboxic zone of the lake. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_881409 |
| institution | PANGAEA |
| language | en |
| publishDate | 2012 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Concentration and distribution of GDGTs in SPM from Lake Tanganyika Schouten, Stefan Rijpstra, W Irene C Durisch-Kaiser, Edith Schubert, Carsten J Sinninghe Damsté, Jaap S Acyclic glycerol dialkyl glycerol tetraether; Branched and isoprenoid tetraether index; Branched glycerol dialkyl glycerol tetraether; Calculated, TEX86; Crenarchaeol; DEPTH, water; Glycerol dialkyl glycerol tetraether; Lake_Tanganyika_WS; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; Oxygen; Temperature, water; Temperature, water, interpolated; Tetraether index of 86 carbon atoms; Water sample; WS We studied the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) in suspended particulate matter from the water column of Lake Tanganyika (East Africa), where sediment studies had shown the applicability of the TEX86 proxy for reconstructing surface lake water temperature. GDGTs, in particular crenarchaeol, showed maximum abundance within the suboxic zone (100-180 m), suggesting that this is the preferred niche of ammonia-oxidizing Thaumarchaeota. Despite evidence for anaerobic methane oxidation in deep anoxic water (300-1200 m) no unambiguous evidence for an imprint of methanotrophic archaea on GDGT distribution was found. Comparison of TEX86 and BIT indices with those of surface sediments suggests that the sedimentary GDGTs are derived predominantly from the oxic zone and suboxic zone of the lake. |
| title | Concentration and distribution of GDGTs in SPM from Lake Tanganyika |
| topic | Acyclic glycerol dialkyl glycerol tetraether; Branched and isoprenoid tetraether index; Branched glycerol dialkyl glycerol tetraether; Calculated, TEX86; Crenarchaeol; DEPTH, water; Glycerol dialkyl glycerol tetraether; Lake_Tanganyika_WS; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; Oxygen; Temperature, water; Temperature, water, interpolated; Tetraether index of 86 carbon atoms; Water sample; WS |
| url | https://doi.org/10.1594/PANGAEA.881409 |