Monitoring of the growth phase of phytoplankton cultures in part 2 (dissolved organic matter consumption) of the microcosm experiment, Gulf of Finland, Baltic Sea
Fuente:
PANGAEA
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2021
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1867172171901566976 |
|---|---|
| author | Elovaara, Samu Eronen-Rasimus, Eeva Asmala, Eero Tamelander, Tobias Kaartokallio, Hermanni |
| author_facet | Elovaara, Samu Eronen-Rasimus, Eeva Asmala, Eero Tamelander, Tobias Kaartokallio, Hermanni |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The data were collected from an experiment using phytoplankton cultures (Apocalathium malmogiense and Rhodomonas marina). The aim of the experiment was to study carbon cycling among phytoplankton and bacteria, and the effects on the dissolved organic matter (DOM) pool. Measured variables include phytoplankton and bacterial abundance, primary production, bacterial production and respiration, 14C-transfer from phytoplankton to DOM and bacteria, concentrations of particulate and dissolved organic carbon, nitrate, phosphate and chlorophyll a, and optical characteristics of dissolved organic matter. The experiment was conducted at Tvärminne Zoological Station, Hanko, Finland with non-axenic unialgal phytoplankton cultures and bacteria originating from the Baltic Sea. The experiment was conducted between Dec. 2017 and Apr. 2018. The experiment consisted of two parts, the DOM release experiment (part 1) and the DOM consumption experiment (part 2). Separate triplicate batch cultures of both phytoplankton species were grown for each experiment. In the DOM release experiment the cultures were grown for over 4 months and three day-long incubations (key point incubations, KPI's) were initiated on three occasions; the first KPI at early exponential growth phase and the second and third KPI's when the phytoplankton had grown more abundant. During each KPI and aliquot of the culture was inoculated with freshly collected sea water bacteria, and bacterial community composition was measured. This aliquot was then divided into two further aliquots; one was incubated with radioisotopes for productivity (primary and bacterial production) and 14C-flow analyses (production line) and one filtered through 0.8 µm for analysis of DOM optical properties. During the KPI's measurements were taken at 0, 4, 8 and 12 h. Nutrient concentrations (measured from non-filtered and 0.8 µm filtered samples) and concentration of dissolved organic carbon were measured only at 0 and 12 h. Concentrations of particulate organic carbon and nitrogen and chlorophyll a were measured only once for each KPI at the beginning of the incubation. In the DOM consumption experiments the cultures were grown to high abundance, after which the phytoplankton and most of the bacteria were filtered out. The filtrate was then inoculated with freshly collected sea water bacteria, after which it was incubated for 7 days. Bacterial abundance, production, respiration, and community composition, and concentration and optical properties of DOM were measured daily. The experimental design is explained in figure 1 of the associated publication. This data table contains measurements collected during monitoring of the growth of phytoplankton batch cultures in part 2 of the experiment (DOM consumption experiment), i.e., before the initiation of the incubation. These phytoplankton cultures were used in the incubation of the DOM consumption experiment. The measured variables are phytoplankton abundance and abundance of A. malmogiense cells with lower chlorophyll a fluorescence. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_937717 |
| institution | PANGAEA |
| language | en |
| publishDate | 2021 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Monitoring of the growth phase of phytoplankton cultures in part 2 (dissolved organic matter consumption) of the microcosm experiment, Gulf of Finland, Baltic Sea Elovaara, Samu Eronen-Rasimus, Eeva Asmala, Eero Tamelander, Tobias Kaartokallio, Hermanni 14C; Amalmogiense_SHTV-2_FINMARI; Bacteria; bacterial production; Baltic Sea; CDOM; DATE/TIME; DOM; Event label; FDOM; Flow cytometry Accuri C6; Laboratory experiment; Laboratory strains; LIMNOS water sampler; LIMNOSWS; Microphytoplankton; Phytoplankton; Primary production; Replicate; Rmarina_Crypto08-A2_FINMARI; Species; Temperature, water; Tvärminne, Storfjärden, Finland; Type of study; Uniform resource locator/link to reference The data were collected from an experiment using phytoplankton cultures (Apocalathium malmogiense and Rhodomonas marina). The aim of the experiment was to study carbon cycling among phytoplankton and bacteria, and the effects on the dissolved organic matter (DOM) pool. Measured variables include phytoplankton and bacterial abundance, primary production, bacterial production and respiration, 14C-transfer from phytoplankton to DOM and bacteria, concentrations of particulate and dissolved organic carbon, nitrate, phosphate and chlorophyll a, and optical characteristics of dissolved organic matter. The experiment was conducted at Tvärminne Zoological Station, Hanko, Finland with non-axenic unialgal phytoplankton cultures and bacteria originating from the Baltic Sea. The experiment was conducted between Dec. 2017 and Apr. 2018. The experiment consisted of two parts, the DOM release experiment (part 1) and the DOM consumption experiment (part 2). Separate triplicate batch cultures of both phytoplankton species were grown for each experiment. In the DOM release experiment the cultures were grown for over 4 months and three day-long incubations (key point incubations, KPI's) were initiated on three occasions; the first KPI at early exponential growth phase and the second and third KPI's when the phytoplankton had grown more abundant. During each KPI and aliquot of the culture was inoculated with freshly collected sea water bacteria, and bacterial community composition was measured. This aliquot was then divided into two further aliquots; one was incubated with radioisotopes for productivity (primary and bacterial production) and 14C-flow analyses (production line) and one filtered through 0.8 µm for analysis of DOM optical properties. During the KPI's measurements were taken at 0, 4, 8 and 12 h. Nutrient concentrations (measured from non-filtered and 0.8 µm filtered samples) and concentration of dissolved organic carbon were measured only at 0 and 12 h. Concentrations of particulate organic carbon and nitrogen and chlorophyll a were measured only once for each KPI at the beginning of the incubation. In the DOM consumption experiments the cultures were grown to high abundance, after which the phytoplankton and most of the bacteria were filtered out. The filtrate was then inoculated with freshly collected sea water bacteria, after which it was incubated for 7 days. Bacterial abundance, production, respiration, and community composition, and concentration and optical properties of DOM were measured daily. The experimental design is explained in figure 1 of the associated publication. This data table contains measurements collected during monitoring of the growth of phytoplankton batch cultures in part 2 of the experiment (DOM consumption experiment), i.e., before the initiation of the incubation. These phytoplankton cultures were used in the incubation of the DOM consumption experiment. The measured variables are phytoplankton abundance and abundance of A. malmogiense cells with lower chlorophyll a fluorescence. |
| title | Monitoring of the growth phase of phytoplankton cultures in part 2 (dissolved organic matter consumption) of the microcosm experiment, Gulf of Finland, Baltic Sea |
| topic | 14C; Amalmogiense_SHTV-2_FINMARI; Bacteria; bacterial production; Baltic Sea; CDOM; DATE/TIME; DOM; Event label; FDOM; Flow cytometry Accuri C6; Laboratory experiment; Laboratory strains; LIMNOS water sampler; LIMNOSWS; Microphytoplankton; Phytoplankton; Primary production; Replicate; Rmarina_Crypto08-A2_FINMARI; Species; Temperature, water; Tvärminne, Storfjärden, Finland; Type of study; Uniform resource locator/link to reference |
| url | https://doi.org/10.1594/PANGAEA.937717 |