Geochemistry of coastal wetland in the Northern Saharan environment through lacustrine sediment core THI
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| Autori principali: | , , , , , , , , , , , , , , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2020
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| _version_ | 1867170391734091776 |
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| author | Nogueira, Juliana Evangelista, Heitor Bouchaou, Lhoussaine Moreira, Luciane Silva Sifeddine, Abdelfettah ElMouden, Ahmed Msanda, Fouad Caquineau, Sandrine Briceño-Zuluaga, Francisco Javier Licínio, Marcus Vinicius Mandeng-Yogo, Magloire Mendez-Millan, Mercedes Cordeiro, Renato Campello Knoppers, Bastiaan Moreira-Ramírez, Manuel Martins, Renato |
| author_facet | Nogueira, Juliana Evangelista, Heitor Bouchaou, Lhoussaine Moreira, Luciane Silva Sifeddine, Abdelfettah ElMouden, Ahmed Msanda, Fouad Caquineau, Sandrine Briceño-Zuluaga, Francisco Javier Licínio, Marcus Vinicius Mandeng-Yogo, Magloire Mendez-Millan, Mercedes Cordeiro, Renato Campello Knoppers, Bastiaan Moreira-Ramírez, Manuel Martins, Renato |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The core was collected manually from a boat employing a gravity core sampler. The core was sliced every two centimeters in the field, packed in individual identified plastics bags, and kept refrigerated. The THI sediment core (N 27°59.139, W 12°17.109), located in the inner portion of the Lagoon, was retrieved from a secondary channel, having 52 cm of length. The salinity measured at the site on the day of the sampling was 50 PSU, thus revealing a saline gradient that increases towards the upstream, probably due to a longer residence time of the water and consequent higher evaporation rate at that site. To its right side, the secondary channel is protected by a desert plateau, while to its left lays a saltmarsh area, occupied by specimens of the genus Salicornia sp., that are periodically exposed by tidal dynamics. A low marine influence characterizes this part of the Lagoon, depths between 2.70 m and 5.20 m, during low and high tides, respectively, and surrounded by extensive heterogeneous marshes. Aiming the recognition of the environmental changes at this point of the lagoon, we have performed the following measurements in the core's sediments: dating (210Pb and 137Cs calibration), sedimentation rate, mean grainsize, Chlorophyll, Total Organic Carbon (TOC), C/N, Sr/Ca and Si/Ti elemental ratios. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_925024 |
| institution | PANGAEA |
| language | en |
| publishDate | 2020 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemistry of coastal wetland in the Northern Saharan environment through lacustrine sediment core THI Nogueira, Juliana Evangelista, Heitor Bouchaou, Lhoussaine Moreira, Luciane Silva Sifeddine, Abdelfettah ElMouden, Ahmed Msanda, Fouad Caquineau, Sandrine Briceño-Zuluaga, Francisco Javier Licínio, Marcus Vinicius Mandeng-Yogo, Magloire Mendez-Millan, Mercedes Cordeiro, Renato Campello Knoppers, Bastiaan Moreira-Ramírez, Manuel Martins, Renato Age; AGE; Arid environment; Carbon, organic, total; Carbon, organic, total, error, relative; Carbon, organic/Nitrogen, total ratio; Carbon, organic/Nitrogen, total ratio, error; Carbon and nitrogen and sulfur (CNS) isotope element analyzer, Elementar, Vario EL III; Climate change; Coastal impacts; DEPTH, sediment/rock; GC; Geochemistry; Grain size, mean; Gravity corer; Lacustrine_lagoon_THI; Lead-210 activity per mass, excess; Lead-210 activity per mass, excess, error; Morocco; Radium-226 activity per mass; Radium-226 activity per mass, error; remote sensing; Saharan wetlands; Sedimentary chlorophyll; Sedimentary chlorophyll, error; Silicon/Titanium ratio; Silicon/Titanium ratio, error; Strontium/Calcium ratio; Strontium/Calcium ratio, error The core was collected manually from a boat employing a gravity core sampler. The core was sliced every two centimeters in the field, packed in individual identified plastics bags, and kept refrigerated. The THI sediment core (N 27°59.139, W 12°17.109), located in the inner portion of the Lagoon, was retrieved from a secondary channel, having 52 cm of length. The salinity measured at the site on the day of the sampling was 50 PSU, thus revealing a saline gradient that increases towards the upstream, probably due to a longer residence time of the water and consequent higher evaporation rate at that site. To its right side, the secondary channel is protected by a desert plateau, while to its left lays a saltmarsh area, occupied by specimens of the genus Salicornia sp., that are periodically exposed by tidal dynamics. A low marine influence characterizes this part of the Lagoon, depths between 2.70 m and 5.20 m, during low and high tides, respectively, and surrounded by extensive heterogeneous marshes. Aiming the recognition of the environmental changes at this point of the lagoon, we have performed the following measurements in the core's sediments: dating (210Pb and 137Cs calibration), sedimentation rate, mean grainsize, Chlorophyll, Total Organic Carbon (TOC), C/N, Sr/Ca and Si/Ti elemental ratios. |
| title | Geochemistry of coastal wetland in the Northern Saharan environment through lacustrine sediment core THI |
| topic | Age; AGE; Arid environment; Carbon, organic, total; Carbon, organic, total, error, relative; Carbon, organic/Nitrogen, total ratio; Carbon, organic/Nitrogen, total ratio, error; Carbon and nitrogen and sulfur (CNS) isotope element analyzer, Elementar, Vario EL III; Climate change; Coastal impacts; DEPTH, sediment/rock; GC; Geochemistry; Grain size, mean; Gravity corer; Lacustrine_lagoon_THI; Lead-210 activity per mass, excess; Lead-210 activity per mass, excess, error; Morocco; Radium-226 activity per mass; Radium-226 activity per mass, error; remote sensing; Saharan wetlands; Sedimentary chlorophyll; Sedimentary chlorophyll, error; Silicon/Titanium ratio; Silicon/Titanium ratio, error; Strontium/Calcium ratio; Strontium/Calcium ratio, error |
| url | https://doi.org/10.1594/PANGAEA.925024 |