Abundances of dinoflagellate cysts in sediment trap MST-9 (Appendix 1)
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| Sprache: | en |
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PANGAEA
2002
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| _version_ | 1867170891171889152 |
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| author | Wendler, Ines Zonneveld, Karin A F Willems, Helmut |
| author_facet | Wendler, Ines Zonneveld, Karin A F Willems, Helmut |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | To study the ecology of calcareous dinoflagellates we examined the impact of the SW and NE monsoons on cyst formation using sediment trap material, collected at 1032 m water depth, off Somalia from June 1992 to February 1993. The results do not confirm the relationship between cyst production and lower nutrient concentrations, as highest cyst fluxes were recorded during late SW monsoon under the relatively nutrient-rich and less agitated conditions of mature upwelled water. Lowest cyst fluxes were found under strongly stratified, nutrient-depleted surface waters during the inter-monsoon. Although all of the studied species seem to prefer a stratified water column, an elevated concentration of nutrients appears to be necessary to maintain high cyst production. Comparison of the mean cyst flux to the sediment trap with that into the underlying surface sediments reveals a loss of 81-96%, which can be attributed to calcite dissolution. The relatively small spheres of Thoracosphaera heimii are affected more than the cysts of the other species. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_714599 |
| institution | PANGAEA |
| language | en |
| publishDate | 2002 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Abundances of dinoflagellate cysts in sediment trap MST-9 (Appendix 1) Wendler, Ines Zonneveld, Karin A F Willems, Helmut 915; Calciodinellum albatrosianum; Calciodinellum levantinum; Calciodinellum operosum; DATE/TIME; DEPTH, water; Dinoflagellate cyst, spiny; Dinoflagellate cyst indeterminata; Leonella granifera; Mass; MST-9; Netherlands Indian Ocean Programme; NIOP; NIOP-C2; Number; Somalia Basin; Split; Thoracosphaera heimii; Total mass, flux per day; Trap; TRAP; Tyro; Volume To study the ecology of calcareous dinoflagellates we examined the impact of the SW and NE monsoons on cyst formation using sediment trap material, collected at 1032 m water depth, off Somalia from June 1992 to February 1993. The results do not confirm the relationship between cyst production and lower nutrient concentrations, as highest cyst fluxes were recorded during late SW monsoon under the relatively nutrient-rich and less agitated conditions of mature upwelled water. Lowest cyst fluxes were found under strongly stratified, nutrient-depleted surface waters during the inter-monsoon. Although all of the studied species seem to prefer a stratified water column, an elevated concentration of nutrients appears to be necessary to maintain high cyst production. Comparison of the mean cyst flux to the sediment trap with that into the underlying surface sediments reveals a loss of 81-96%, which can be attributed to calcite dissolution. The relatively small spheres of Thoracosphaera heimii are affected more than the cysts of the other species. |
| title | Abundances of dinoflagellate cysts in sediment trap MST-9 (Appendix 1) |
| topic | 915; Calciodinellum albatrosianum; Calciodinellum levantinum; Calciodinellum operosum; DATE/TIME; DEPTH, water; Dinoflagellate cyst, spiny; Dinoflagellate cyst indeterminata; Leonella granifera; Mass; MST-9; Netherlands Indian Ocean Programme; NIOP; NIOP-C2; Number; Somalia Basin; Split; Thoracosphaera heimii; Total mass, flux per day; Trap; TRAP; Tyro; Volume |
| url | https://doi.org/10.1594/PANGAEA.714599 |