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Concentrations of phytoplankton, chlorophyll, POC, dry weight measurements and abiotic data in the surface water of Gazi creek (Kenya) sampled in August 1989
Citable as data publication
Aernaudts H.; Tackx M.; Laboratorium voor Ecologie en Systematiek; Faculteit Wetenschappen. VUB: Belgium; (2016): Concentrations of phytoplankton, chlorophyll, POC, dry weight measurements and abiotic data in the surface water of Gazi creek (Kenya) sampled in August 1989. https://doi.org/10.14284/142
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This dataset is licensed under a Creative Commons Attribution 4.0 International License.
This dataset is licensed under a Creative Commons Attribution 4.0 International License.Description
Data on concentrations of chlorophyll, phytoplankton, POC and dry weight measurements during three 24h-cycli at Gazi Creek in August 1989. Additionally tide, temperature, salinity and pH were measured. The data were digitized by VLIZ from the original report: Aernaudts, H. (1990). Seston in mangrove ecosysteem (Gazi, Kenia) = Seston in a mangrove ecosystem (Gazi, Kenya). MSc Thesis. VUB: Brussel. 52 pp. more
During the month of August 1989, three 24 cycli were conducted in the Gazi creek, Kenya. Every 4 hours, seston samples (10L of surface water) were taken at the banks of the creek. The samples were analysed for chlorophyl, POC, dry weight and phytoplankton concentrations. The samples for primary production were in-situ incubated. It was generally observed that the litoral-benthic phytoplankton species were dominant in the phytoplankton composition. The pelagic diatoms and the freshwater species Scenedesmus sp. were continuously present in an almost constant low concentration. The concentration in chlorofyl a, POC, dry weight and phytoplankton decreased with increasing water levels. At the sampling location, the ratio chlorophyl a/dry weight and the comparison between chlorophyll a - primary production and phytoplankton concentration demonstrated a limited interaction at the contact area between the creek and the mangroves.
During the month of August 1989, three 24 cycli were conducted in the Gazi creek, Kenya. Every 4 hours, seston samples (10L of surface water) were taken at the banks of the creek. The samples were analysed for chlorophyl, POC, dry weight and phytoplankton concentrations. The samples for primary production were in-situ incubated. It was generally observed that the litoral-benthic phytoplankton species were dominant in the phytoplankton composition. The pelagic diatoms and the freshwater species Scenedesmus sp. were continuously present in an almost constant low concentration. The concentration in chlorofyl a, POC, dry weight and phytoplankton decreased with increasing water levels. At the sampling location, the ratio chlorophyl a/dry weight and the comparison between chlorophyll a - primary production and phytoplankton concentration demonstrated a limited interaction at the contact area between the creek and the mangroves.
Scope
Themes:
Biology > Pigments (e.g. chlorophyll), Biology > Plankton > Phytoplankton, Biology > Productivity - biomass
Keywords:
Marine/Coastal, Brackish water, Benthic diatoms, Diatoms, fresh water phytoplankton, Mangroves, Primary production, Seston, EurOBIS calculated BBOX, ISW, Kenya, Gazi Creek, Actinoptychus C.G. Ehrenberg, 1843, Amphora C.G. Ehrenberg ex F.T. Kützing, 1844, Bacillaria J.F. Gmelin, 1788, Bacillariophyceae, Biddulphia S.F. Gray, 1821, Chaetoceros C.G. Ehrenberg, 1844, Cyclotella (F.T. Kützing) A. de Brébisson, 1838, Diatoma J.B.M. Bory de Saint-Vincent, 1824, Diploneis (C. G. Ehrenberg) P.T. Cleve, 1894, Licmophora C.A. Agardh, 1827, Melosira C.A. Agardh, 1824, Navicula J.B.M. Bory de Saint-Vincent, 1822, Nitzschia A.H. Hassall, 1845, Pleurosigma W. Smith, 1852, Rhaphoneis C.G. Ehrenberg, 1844, Rhizosolenia T. Brightwell, 1858, Scenedesmus Meyen, 1829, Tabellaria C.G. Ehrenberg ex F.T. Kützing, 1844
Geographical coverage
EurOBIS calculated BBOX Stations
Bounding Box
Coordinates: MinLong: 39,5097; MinLat: -4,4405 - MaxLong: 39,5097; MaxLat: -4,4405 [WGS84]
Coordinates: MinLong: 39,5097; MinLat: -4,4405 - MaxLong: 39,5097; MaxLat: -4,4405 [WGS84]
ISW, Kenya, Gazi Creek
Temporal coverage
8 August 1989 - 25 August 1989
Weekly
Weekly
Taxonomic coverage
Actinoptychus C.G. Ehrenberg, 1843 [WoRMS]
Amphora C.G. Ehrenberg ex F.T. Kützing, 1844 [WoRMS]
Bacillaria J.F. Gmelin, 1788 [WoRMS]
Bacillariophyceae [WoRMS]
Biddulphia S.F. Gray, 1821 [WoRMS]
Chaetoceros C.G. Ehrenberg, 1844 [WoRMS]
Cyclotella (F.T. Kützing) A. de Brébisson, 1838 [WoRMS]
Diatoma J.B.M. Bory de Saint-Vincent, 1824 [WoRMS]
Diploneis (C. G. Ehrenberg) P.T. Cleve, 1894 [WoRMS]
Licmophora C.A. Agardh, 1827 [WoRMS]
Melosira C.A. Agardh, 1824 [WoRMS]
Navicula J.B.M. Bory de Saint-Vincent, 1822 [WoRMS]
Nitzschia A.H. Hassall, 1845 [WoRMS]
Pleurosigma W. Smith, 1852 [WoRMS]
Rhaphoneis C.G. Ehrenberg, 1844 [WoRMS]
Rhizosolenia T. Brightwell, 1858 [WoRMS]
Scenedesmus Meyen, 1829 [WoRMS]
Tabellaria C.G. Ehrenberg ex F.T. Kützing, 1844 [WoRMS]
Parameters
Chlorophyll a
Chlorophyll b
Chlorophyll c
Dry weight biomass
Gross primary production
Length of biological entity specified elsewhere [BODC]
Particulate organic carbon (POC)
pH
Phytoplankton density
Salinity
Temperature
Chlorophyll b
Chlorophyll c
Dry weight biomass
Gross primary production
Length of biological entity specified elsewhere [BODC]
Particulate organic carbon (POC)
pH
Phytoplankton density
Salinity
Temperature
Contributors
Vlaams Instituut voor de Zee (VLIZ), more, data manager
Vrije Universiteit Brussel; Faculteit Wetenschappen; Vakgroep Biologie; Laboratorium voor Ecologie en Systematiek (ECOL), data creator, data creator
Aernaudts, Hilde
Tackx, Micky
Tackx, Micky
Related datasets
Publication
Based on this dataset
Aernaudts, H. (1990). Seston in mangrove ecosysteem (Gazi, Kenia) = Seston in a mangrove ecosystem (Gazi, Kenya). MSc Thesis. VUB: Brussel. 52 pp.
Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2014-04-22
Information last updated: 2016-05-11
