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| Main Authors: | , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2004
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| Online Access: | https://doi.org/10.1594/PANGAEA.736594 |
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| _version_ | 1867170457284771840 |
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| author | Meier, K J Sebastian Zonneveld, Karin A F Kasten, Sabine Willems, Helmut |
| author_facet | Meier, K J Sebastian Zonneveld, Karin A F Kasten, Sabine Willems, Helmut |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Comparison of calcareous dinoflagellate cyst assemblages with Ba, Al, Mn, and Fe records from three sediment cores collected in the eastern Mediterranean Sea indicate that calcareous dinoflagellate cysts are generally resistant to postdepositional dissolution. Cyst association changes during and after sapropel S1 formation can therefore be closely related to variability in surface water productivity. Two groups of cysts are defined: those having highest abundances within the sapropelic and postsapropelic sediments. The temporal cyst distributions suggest increased freshwater input mainly from the Nile and a shallowing of the pycnocline as the most important processes increasing nutrient concentration in the photic zone, thus leading to increased productivity and organic carbon fluxes during sapropel formation. Furthermore, a general warming trend at the beginning of S1 formation and a slight salinity decrease are reconstructed. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_736594 |
| institution | PANGAEA |
| language | en |
| publishDate | 2004 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Calcareous dinoflagellate cysts and geochemistry of Mediterranean Sea sediments Meier, K J Sebastian Zonneveld, Karin A F Kasten, Sabine Willems, Helmut 562; 569; Cyprus; GeoB; Geosciences, University of Bremen; GeoTü; Lybia; M51/3; M51/3_562-5; M51/3_569-3; Meteor (1986); MUC; MultiCorer; Paleoceanography at Tübingen University; SESAME; Southern European Seas: Assessing and Modelling Ecosystem Changes Comparison of calcareous dinoflagellate cyst assemblages with Ba, Al, Mn, and Fe records from three sediment cores collected in the eastern Mediterranean Sea indicate that calcareous dinoflagellate cysts are generally resistant to postdepositional dissolution. Cyst association changes during and after sapropel S1 formation can therefore be closely related to variability in surface water productivity. Two groups of cysts are defined: those having highest abundances within the sapropelic and postsapropelic sediments. The temporal cyst distributions suggest increased freshwater input mainly from the Nile and a shallowing of the pycnocline as the most important processes increasing nutrient concentration in the photic zone, thus leading to increased productivity and organic carbon fluxes during sapropel formation. Furthermore, a general warming trend at the beginning of S1 formation and a slight salinity decrease are reconstructed. |
| title | Calcareous dinoflagellate cysts and geochemistry of Mediterranean Sea sediments |
| topic | 562; 569; Cyprus; GeoB; Geosciences, University of Bremen; GeoTü; Lybia; M51/3; M51/3_562-5; M51/3_569-3; Meteor (1986); MUC; MultiCorer; Paleoceanography at Tübingen University; SESAME; Southern European Seas: Assessing and Modelling Ecosystem Changes |
| url | https://doi.org/10.1594/PANGAEA.736594 |