此資源sampling event的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 3,961 筆紀錄。
亦存在 1 筆延伸集的資料表。延伸集中的紀錄補充核心集中紀錄的額外資訊。 每個延伸集資料表中資料筆數顯示如下。
下載最新版本的 Darwin Core Archive (DwC-A) 資源，或資源詮釋資料的 EML 或 RTF 文字檔。
Kiggundu V, Mwebaza-Ndawula L, Makanga B, Nachuha S, Musinguzi L, Natugonza V (2019): Zooplankton occurrences (present/absent) and community structure in three habitat types in northern Lake Victoria, Uganda. v1.2. National Fisheries Resources Research Institute. Dataset/Samplingevent. http://ipt-uganda.gbif.fr/resource?r=zooplankton&v=1.2
此資料的發布者及權利單位為 National Fisheries Resources Research Institute。 This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.
Samplingevent; Occurrence; Uganda; Zooplankton; Lake Victoria
The study was undertaken in the Napoleon Gulf, Lake Victoria and nearby stabilizing waste water ponds.
|界定座標範圍||緯度南界 經度西界 [0.378, 33.192], 緯度北界 經度東界 [0.476, 33.294]|
This dataset covers freshwater zooplankton.
|Genus||Afrocyclops, Ascomorpha, Asplanchna, Brachionus, Chydorus, Euclanis, Eucyclops, Hexathra, Macrothrix, Mesocyclops, Platyias, Polyarthra, Synchaeta, Trichocerca|
|Species||Bosmina longirostris, Brachionus angularis, Brachionus bidentata, Brachionus budapestinensis, Brachionus calyciflorus, Brachionus caudatus, Brachionus dimidiatus, Brachionus falcatus, Brachionus forficula, Brachionus patulus, Brachionus plicatilis, Brachionus quadridentatus, Brachionus urceolaris, Ceriodaphnia cornuta, Daphnia longispina, Daphnia lumholtzi, Diaphanosoma excisum, Filinia longiseta, Filinia opoliensis, Keratella cochlearis, Keratella tropica, Lecane bulla, Lecane luna, Moina micrura, Platyias quadricornis, Polyarthra vulgaris, Synchaeta pectinata, Thermocyclops decipiens, Thermocyclops emini, Thermocyclops incisus, Thermocyclops neglectus, Thermocyclops oblongatus, Thermodiaptomus galeboides, Trichocerca cylindrica, Tropocyclops confinnis, Tropocyclops tenellus, Tropodiaptomus stuhlmanni|
This work was part of an MSc research project that was done in three habitat types in Napoleon Gulf, Lake Victoria, Uganda (Vincent et al., 2012). The results of the project indicated that zooplankton community structure that can be used as a biological indicator of water quality in the Lake Victoria region, and confirmed the negative impacts of environmental conditions created by release of nutrients into the water systems.
|計畫名稱||Variations in zooplankton community structure and water quality conditions in three habitat types in northern Lake Victoria|
|經費來源||The project had no funding to declare|
|研究區域描述||The study area was the Northern part of Lake Victoria in Jinja.|
|研究設計描述||Three habitats, as described below were investigated in the study. The three study areas represent a water quality gradient of increasing nutrient levels from source of the Nile to the sewage lagoons. Source of the Nile This habitat marks the headwaters of the Nile River. It is an active tourist site with a range of commercial activities such as kiosks, bars, and artisanal fishing. Napoleon Gulf A number of commercial activities occur in and around this relatively shallow bay (maximum of 20 m depth) habitat. Key activities include artisanal fishing, fish landing sites, cage fish farming, farming, and lakeside markets. The gulf receives effluents from surrounding Jinja town as well as water from associated sewage treatment plant. If not appropriately controlled, such activities have the potential to affect water quality in this gulf. Multiple sites were sampled within the gulf (Vincent et al., 2012). The Sewage Lagoons (SL) Six sewage stabilization ponds that receive industrial and domestic effluents, as well as runoff from the Jinja Municipal Council (JMC), are located at Kirinya. Of the six ponds, only the two last ponds, which contain fewer organic solids, and empty their effluents to the Napoleon gulf through a 0.5 km stretch of swamp, were sampled.|
Zooplankton samples were collected with a conical plankton net (Nansen type; mesh size 60 µm; mouth diameter 0.25 m), towed vertically through the water column, as described by Mwebaza-Ndawula (1994). Each sample was washed with tap water in the laboratory over a 53 µm sieve to remove the preservative and then diluted to a suitable volume, depending on the concentration of organisms in each sample. Sub-samples of 2, 2, 5 and 10 mL were taken with a wide bore automatic pipette from a well agitated sample. The sub-sample series were performed to consider the more abundant organisms in 2, 2 mL series, and the rarer organisms in 2, 2, 5, 10 mL series. Each sub-sample was put into a counting chamber and examined under inverted microscope (Hund, Wetzlar, Germany) at X100 magnification for taxonomic determination, and X40 for counting and organism body measurements.
|研究範圍||Sampling was conducted from October 2009 to January 2010. Sampling was done in the three habitats in northern Lake Victoria, including sewage lagoons at the lake shores, Napoleon Gulf (NG) and the interface between the lake and the Nile River (also known as Source of the Nile River). A total of 18 sites were sampled per trip (two transects per habitat, with three sites per transect), resulting in a total of 72 samples collected during the study period.|
|品質控管||Some zooplankton were able to be identified to species level using published taxonomic keys (Sars 1895; Pennak 1953; Brooks 1957; Rutner-Kolisko 1974; Koste 1978; Boxshall & Braide 1991; Korinek 1999). Taxonomic names were cross-checked using the World Register of Marine Species (WoRMS). Volume densities of organisms were calculated from the counts data, with reference to the sample net mouth diameter and water column depth at each sampling site (Mwebaza-Ndawula L., 1998).|
- Collection of the zooplankton In the field, a conical plankton net (Nansen type; mesh size 60 µm; mouth diameter 0.25 m), towed vertically through the water column to have an integrated sample was used to collected the zooplankton. Three hauls were taken per site and were combined to make a composite sample. Preserving the samples The composite sample was preserved with sugar-formalin, in a ratio of 1-part formalin to 10 parts sample volume, the sugar was to stop the ballooning of cladocerans for easy identification. Identification of zooplankton taxa In the laboratory, samples were washed using a sieve of 53 µm to remove the fixatives. Some organisms were identified to species level using published keys (Sars, 1895, Pennak, 1953, Brooks, 1957, Rutner-Kolisko, 1974, Koste, 1978, Boxshall and Braide, 1991, Korinek, 1999). Density of organisms were calculated from the counts data, with reference to the sample net mouth diameter and water column depth at each sampling site (Mwebaza-Ndawula, 1998, unpubl. PhD Thesis)
- Boxshall, G. A. & Braide, E. I. 1991. The freshwater cyclopoid copepods of Nigeria, with an illustrated key to all species. Bull. Br. Mus. Nat. Hist. (zool), 57, 185-212.
- Brooks, J. L. 1957. The systematics of North American Daphnia. Memoirs of the connecticut academy of Arts and Sciences, 13, 1-18.
- Korinek, V. 1999. A guide to limnetic species of Cladocera of African inland waters (Crustacea, Branchiopoda). The International Association of Theoretical and Applied Limnology. SIL.
- Koste, W. 1978. Rotatoria. Die Radertiere Mitteleuropas. Ein Bestimmungwerk, begrundet vo Max Voig. Uberrordnung Monogononta. Gebruder Borntraeger, Berlin, Stuttgart.
- Pennak, R. W. 1953. Fresh-water invertebrates of the United States, New York, John Wiley & Sons.
- Rutner-Kolisko, A. 1974. Planktonic rotifers: Biology and taxonomy, Biological Station Lunz of the Austrian Academy of Science. E. Schweizerbart’sche Verlagsbuchhandlung.
- Sars, G. O. 1895. An account of the Crustacea of Norway, Christiania and Copenhagen Alb. Cammermeyer Forlag
- Vincent, K., Mwebaza-Ndawula, L., Makanga, B. & Nachuha, S. 2012. Variations in zooplankton community structure and water quality conditions in three habitat types in northern Lake Victoria. Lakes & Reservoirs: Research & Management, 17, 83-95.