The dataset presents occurrences and abundance of zooplankton taxa obtained from different surveys conducted over a 12-year period from 1998-2000, 2002-2004, 2006, 2009-2010, 2014-15 and 2017. The surveys were conducted in different waterbodies and habitat types within the Lake Kyoga system, covering 12 water bodies (10 lakes and 2 rivers).
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Kiggundu V, Egessa R, Mwebaza-Ndawula L (2022): Zooplankton occurrences and abundance in the Lake Kyoga system, Uganda. v1.1. National Fisheries Resources Research Institute. Dataset/Occurrence. http://ipt-uganda.gbif.fr/resource?r=lakekyogasystemzoo&v=1.1
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.
此資源已向GBIF註冊，並指定以下之GBIF UUID: 8279fc87-579e-4d97-8522-4514bedeb180。 National Fisheries Resources Research Institute 發佈此資源，並經由GBIF Uganda同意向GBIF註冊成為資料發佈者。
Occurrence; Zooplankton; Uganda; Lake Kyoga; Freshwater
- 使用者 ●
The dataset covers waterbodies and habitats types within the Lake Kyoga system, covering 12 water bodies (10 lakes and 2 rivers).
|界定座標範圍||緯度南界 經度西界 [0.516, 32.113], 緯度北界 經度東界 [2.065, 34.272]|
Freshwater zooplankton identified to order, family, genus and species
|Genus||Afrocyclops, Ascomorpha, Asplanchna, Cephlodella, Chydorus, Euclanis, Eucyclops, Harpacticoida, Hexanauplia, Hexathra, Lecane, Lepadella, Macrothrix, Mesocyclops, Polyarthra, Synchaeta, Thermocyclops, Trichocerca|
|Species||Beauchampiella eudactylota, Bosmina longirostris, Brachionus angularis, Brachionus bidentatus, Brachionus budapestinensis, Brachionus calyciflorus, Brachionus caudatus, Brachionus falcatus, Brachionus forficula, Brachionus patulus, Brachionus plicatilis, Brachionus quadridentatus, Brachionus urceolaris, Brachionus variabilis, Ceriodaphnia cornuta, Daphnia barbata, Daphnia lumholtzi, Diaphanosoma excisum, Filinia longiseta, Filinia opoliensis, Keratella cochlearis, Keratella tropica, Lecane bulla, Lecane luna, Macrochaetus sericus, Moina micrura, Platyias quadricornis, Polyarthra vulgaris, Synchaeta pectinata, Testudinella obscura, Testudinella patina, Thermocyclops emini, Thermocyclops incisus, Thermocyclops neglectus, Thermocyclops oblongatus, Thermodiaptomus galeboides, Trichocerca cylindrica, Tropocyclops confinis, Tropocyclops tenellus|
This dataset was part of a project to advance access to quality freshwater data and information in Uganda by harnessing capacity in data mobilization, data available through GBIF and engagements with data user institutions. The goal was to advance utility of the data in conservation decision making, advocacy, education and reporting on biodiversity. Limited capacity of users to develop biodiversity information from primary biodiversity data, coupled with some deficiencies in data available through GBIF, is a main barrier to data use. This project worked to improve the quality of the data the National Fisheries Resources Research Institute (NaFIRRI) published through GBIF and used all the data available to develop freshwater biodiversity information to guide conservation planning. The quality of the occurrences were improved by linking them with abundance data and coordinates. Then, using all data available in GBIF, the project developed information products tailored to conservation planning. The information was envisaged to have a direct entry point into policies and practices of Uganda’s agricultural sector. The sector had been identified by the National Environmental Management Authority (NEMA) through a national biodiversity information Political and Economic Analysis (PEA), as the biggest sector threatening biodiversity. The information products developed were tailored to the information needs of the sector as defined in the PEA.
|計畫名稱||Advancing freshwater biodiversity data and information access, utility and relevance for conservation decision making in Uganda|
|經費來源||The project was funded by European Union through the Biodiversity Information for Development (BID) programme of the Global Biodiversity Information Facility (GBIF). Co-funding was available from the JRS Biodiversity Foundation, Royal Belgian Institute of Natural Sciences, and Government of Uganda|
|研究區域描述||The project was a national project, mobilizing data from all water bodies in Uganda|
|研究設計描述||NaFIRRI implemented biodiversity informatics projects in the past but freshwater biodiversity data remained in less useful formats especially for aquatic invertebrates and algae. Data mobilization in this project involved identifying and digitizing all available data from existing soft and hard copy records. Taxa occurrences and associated abundance data where applicable, were mobilized and published through GBIF. The goal was to fill the data gaps. Our data mobilization design was such that, data was mobilized by each of the broad freshwater taxa (zooplankton, macroinvertebrates, fish and algae). Data for each of the broad taxa where possible, was grouped by each of the major lake systems in Uganda. For example, data in this resource is for zooplankton for Lake Kyoga system.|
Zooplankton samples were collected with a conical plankton net (Nansen type; mesh size 60 µm and mouth diameter of 0.25 m), towed vertically through the water column, as described by Fernando (2002) and Mwebaza-Ndawula (1994). Three hauls were taken and combined to make composite samples which preserved in 5% formalin and transferred to laboratory for taxonomic analysis and enumeration. In the laboratory, each sample was washed with tap water 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 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 an inverted microscope (Hund, Wetzlar, Germany) at X100 magnification for taxonomic determination, and X40 for counting and organism body measurements.
|研究範圍||This data published in this dataset was collected from research and monitoring studies conducted in water bodies within the Lake Kyoga system. The water bodies covered are lakes Agu, Bisina, Gigatte, Kawi, Kimira, Kwania, Kyoga, Lemwa, Nawampasa and Nyaguo, and rivers Nile (Upper Victoria Nile) and Nabigagga. The studies were conducted in the period between 1998 and 2017. Data is available for specific waterbodies for 1998-2000, 2002-2004, 2006, 2009-2010, 2014-15 and 2017.|
|品質控管||Taxa were identified lowest possible taxonomic 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).Densities of organisms were calculated from counts data, with reference to the sample net mouth diameter and water column depth at each sampling site as per Fernando (2002).|
- Collection of the zooplankton A conical plankton net (Nansen type; mesh size 60 µm; mouth diameter 0.25 m) was used to collect samples. It was towed vertically through the water column to have an integrated sample. Three hauls were taken per site and were combined to make a composite sample.
- Preserving the samples Samples were preserved in a sugar-formalin mixture. 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. Organisms were identified to the smallest taxonomic level possible using taxonomic 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.
- 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.
- Fernando, C. H. 2002. A Guide to Tropical Freshwater Zooplankton. Identification, Ecology and Impact on Fisheries, Leiden, The Netherlands, Backhuys Publishers.
- 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.
- Mwebaza-Ndawula (1994). Changes in relative abundance of zooplankton in northern Lake Victoria, East Africa. Hydrobiologia, 272, 256-264
- 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