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Seasonal fluctuation of the meiobenthos community in Avicennia marina mangrove sediments at Gazi Bay (Kenya) between 1992 and 1993
Citable as data publication
Okondo J.; Vincx M.; Fundamental and Applied Marine Ecology Post Graduate Program (FAME). VUB; Marine Biology Section, Zoology Institute. Ugent: Belgium; (2016): Seasonal fluctuation of the meiobenthos community in Avicennia marina mangrove sediments at Gazi Bay (Kenya) between 1992 and 1993. https://doi.org/10.14284/80
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Availability: 
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
Densities of the most important meiobenthos phyla in an Avicennia marina mangrove sediment in Gazi Bay (Kenya) together with the sediment environmental data. Three replicate samples were taken for every monthly sample between August 1992 and July 1993. The data were digitized by VLIZ from the original report: Okondo, J. (1995). Community structure and seasonal fluctuation of meiobenthos in the Avicenna marina mangrove sediments at Gazi Bay, Kenya. MSc Thesis. RUG: Gent. 56 pp. more
Biotic samples were taken using cores of diameter 3.6 cm for meiofaunal analysis. This was done to a depth of about 20 cm. Soon after sampling the sediment was sectioned into four slices of 0-2 cm, 2-4 cm, 4-10 cm and 10-r cm. Fifteen taxa were observed with most of them occurring in relatively low numbers (<1 % of the count). Nematoda was the dominant taxon (76-98 %). They were followed by oligochaetes, turbellarians, halacaroids and rotifers. Harpacticoid copepods, polychaetes and other taxa were rather insignificant with notable absence in some sample months. Abiotic factors taken were: granulometric parameters, rainfall, leaf fall, T, salinity, POM, pH, pigments, DO2, redox potential, porosity, nutrients, organic carbon.
Biotic samples were taken using cores of diameter 3.6 cm for meiofaunal analysis. This was done to a depth of about 20 cm. Soon after sampling the sediment was sectioned into four slices of 0-2 cm, 2-4 cm, 4-10 cm and 10-r cm. Fifteen taxa were observed with most of them occurring in relatively low numbers (<1 % of the count). Nematoda was the dominant taxon (76-98 %). They were followed by oligochaetes, turbellarians, halacaroids and rotifers. Harpacticoid copepods, polychaetes and other taxa were rather insignificant with notable absence in some sample months. Abiotic factors taken were: granulometric parameters, rainfall, leaf fall, T, salinity, POM, pH, pigments, DO2, redox potential, porosity, nutrients, organic carbon.
Scope
Themes:
Biology > Benthos, Biology > Ecology - biodiversity, Biology > Pigments (e.g. chlorophyll)
Keywords:
Marine/Coastal, Granulometry, Mangroves, Meiobenthos, EurOBIS calculated BBOX, ISW, Kenya, Coast, Gazi Bay, Amphipoda, Avicennia marina (Forssk.) Vierh., Bivalvia, Ciliata Couch, 1832, Diplostraca, Copepoda, Foraminifera, Gastropoda, Gastrotricha, Halacaroidea Cunliffe, 1954, Insecta, Isopoda, Nematoda, Oligochaeta, Ostracoda, Polychaeta, Rotifera, Turbellaria
Geographical coverage
EurOBIS calculated BBOX Stations
Bounding Box
Coordinates: MinLong: 39,5; MinLat: -4,41 - MaxLong: 39,5; MaxLat: -4,41 [WGS84]
Coordinates: MinLong: 39,5; MinLat: -4,41 - MaxLong: 39,5; MaxLat: -4,41 [WGS84]
ISW, Kenya, Coast, Gazi Bay [Marine Regions]
Temporal coverage
6 August 1992 - 21 July 1993
Monthly
Monthly
Taxonomic coverage
Amphipoda [WoRMS]
Avicennia marina (Forssk.) Vierh. [WoRMS]
Bivalvia [WoRMS]
Ciliata Couch, 1832 [WoRMS]
Diplostraca [WoRMS]
Copepoda [WoRMS]
Foraminifera [WoRMS]
Gastropoda [WoRMS]
Gastrotricha [WoRMS]
Halacaroidea Cunliffe, 1954 [WoRMS]
Insecta [WoRMS]
Isopoda [WoRMS]
Nematoda [WoRMS]
Oligochaeta [WoRMS]
Ostracoda [WoRMS]
Polychaeta [WoRMS]
Rotifera [WoRMS]
Turbellaria [WoRMS]
Parameters
Abundance of biological entity specified elsewhere per unit area of the bed [BODC]
Carbon (C)
Chlorophyll a
Depth (spatial coordinate) maximum relative to bed surface in the bed [BODC]
Depth (spatial coordinate) minimum relative to bed surface in the bed [BODC]
Dissolved oxygen (O2)
Fucoxanthine
Meiobenthos density
Mud content
Particulate organic matter (POM)
pH
Redox potential
Sand fraction
Temperature
Carbon (C)
Chlorophyll a
Depth (spatial coordinate) maximum relative to bed surface in the bed [BODC]
Depth (spatial coordinate) minimum relative to bed surface in the bed [BODC]
Dissolved oxygen (O2)
Fucoxanthine
Meiobenthos density
Mud content
Particulate organic matter (POM)
pH
Redox potential
Sand fraction
Temperature
Contributors
Vlaams Instituut voor de Zee (VLIZ), more, data manager
Vrije Universiteit Brussel; Fundamental and Applied Marine Ecology Post Graduate Program (FAME), data creator
Okondo, Julius
Universiteit Gent; Faculteit Wetenschappen; Vakgroep Biologie; Onderzoeksgroep Mariene Biologie (MARBIOL), more, data creator, data creator
Vincx, Magda
Schockaert, Ernest
Schrijvers, Jan
Related datasets
Publication
Based on this dataset
Okondo, J. (1995). Community structure and seasonal fluctuation of meiobenthos in the Avicenna marina mangrove sediments at Gazi Bay, Kenya. MSc Thesis. RUG: Gent. 56 pp.
Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2013-10-31
Information last updated: 2016-03-16
