Rouyer-Denimal, Louis; Nguyen Tu, Thanh Thuy; Govin, Aline; Mendez-Millan, Mercedes; Nascimento, Rodrigo Azevedo; Albuquerque, Ana Luiza Spadano; Chiessi, Cristiano Mazur; Anquetil, Christelle; Huguet, Arnaud: Molecular isotopic composition of n-hentriacontane of continental vegetation of the eastern region of northeastern Brazil and transported to the Northeastern Brazilian margin, Western tropical Atlantic over the late Pleistocene from sediment core GL-1180 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993727 (dataset in review)
Abstract:
In order to explore past vegetation and hydroclimatic changes in the eastern region of northeastern Brazil over the late Pleistocene, we present a record of n-hentriacontane, a compound representative of main vegetation in the eastern region of northeastern Brazil: Caatinga and Atlantic Forest. A combination of several depths has been performed in order to obtain enough organic content to measure molecular δ13C. Based on this proxy, periods of expansion /reduction of Caatinga and Atlantic Forest were discussed.
Keyword(s):
Funding:
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (CAPES), grant/award no. 8881.712022/2022-1
French National Research Agency (ANR), grant/award no. ANR-11-IDEX-0004-17-EURE-0006: IPSL-Climate Graduate School-EUR
National Council for Scientific and Technological Development (CNPq), grant/award no. #305285/2025-4
Coverage:
Latitude: -8.450000 * Longitude: -33.550000
Minimum DEPTH, sediment/rock: 0.450 m * Maximum DEPTH, sediment/rock: 17.200 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Rouyer-Denimal, Louis | Average | Geocode |
| 2 | AGE | Age | ka BP | Rouyer-Denimal, Louis | Average | Geocode |
| 3 | Normalized Difference Vegetation Index | NDVI | Rouyer-Denimal, Louis | see reference(s) | ||
| 4 | δ13C n-Hentriacontane | δ13C C31 | ‰ PDB | Rouyer-Denimal, Louis | Gas chromatograph, Thermo Fisher Scientific, TRACE GC Ultra; coupled with Isotope ratio mass spectrometer, Thermo Fisher Scientific, Delta V Plus |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
56 data points