Taxa occurrences and composition of benthic macroinvertebrates in Lake Edward system, Uganda

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如何引用

研究者應依照以下指示引用此資源。:

Pabire W G (2022): Taxa occurrences and composition of benthic macroinvertebrates in Lake Edward system, Uganda. v1.2. National Fisheries Resources Research Institute. Dataset/Occurrence. http://ipt-uganda.gbif.fr/resource?r=lake_edward_system_macroinvertebrates&v=1.2

權利

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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 Non Commercial (CC-BY-NC 4.0) License.

GBIF 註冊

此資源已向GBIF註冊，並指定以下之GBIF UUID: 305fd445-ee71-44af-9bed-a92da93fed88。  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。

關鍵字

Occurrence; Macro invertebrates; Uganda; Lake Edward; Observation; Occurrence

聯絡資訊

地理涵蓋範圍

Lake Edward system, and lakes Kayumbu and Chahafi.

分類群涵蓋範圍

Aquatic macro invertebrates identified to order, family, genus or species

時間涵蓋範圍

計畫資料

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.

參與計畫的人員:

取樣方法

A ponar grab with an open jaw area of 238 cm2 was used to take samples of benthic macroinvertebrates. One to three hauls were taken from each sampling point. When more than one haul was taken, they were mixed to form a composite sample. The bottom type at each point was described from the grabbed contents. This was captured as location remarks. Samples were concentrated and then placed in labeled sample bottles and preserved with 5% formalin solution. In the laboratory, each sample was rinsed with water and then placed on a white flat-bottomed tray. Macro-invertebrates were sorted, and individual taxa identified to the lowest possible taxonomic level using identification keys (Mandahl-Barth, 1954), Pennak, 1953), Merritt and Cummins, 1997, De Moor et al. 2003). All taxa were recorded, and individuals of each taxon enumerated to estimate their densities.

方法步驟描述:

1. Collection of the macro-invertebrates In the field, sediment samples were collected using a ponar grab with an open jaw surface area of 238 cm2. At each site, three sediment samples were obtained. The three samples were mixed and concentrated to form one composite sample for each site.
2. Preserving the samples The composite sample for each site was separately preserved in 5% formalin to maintain the organisms in good condition prior to analysis in the laboratory.
3. Identification of macro-invertebrates In the laboratory, formalin was rinsed off from each sample and placed in white flat-bottomed trays. Using pairs of forceps, all benthic macro invertebrates were sorted from the sediment and the individual taxa identified to the lowest possible taxonomic level using appropriate identification keys and a dissecting binocular microscope at 4x 25 magnification.

引用文獻

1. Tibihika, P. D. M., Okello, W., Barekye, A., Mbabazi, D., Omony, J., & Kiggundu, V. (2016). Status of Kigezi minor Lakes: A limnological survey in the Lakes of Kisoro, Kabale and Rukungiri Districts. International Journal of Water Resources and Environmental Engineering, 8(5), 60-73.
2. Decru, E., Vranken, N., Bragança, P. H., Snoeks, J., & Van Steenberge, M. (2020). Where ichthyofaunal provinces meet: the fish fauna of the Lake Edward system, East Africa. Journal of fish biology, 96(5), 1186-1201.
3. De Moor IJ, Day JA and de Moor FC (Eds) (2003b) Guide to Freshwater Invertebrates of South Africa. Vol. 8: Insect II. Hemiptera, Megaloptera, Neuroptera, Trichoptera & Lepidoptera, 208Pg.
4. Mendahl-Barth, G. (1954). The Freshwater Mollusks of Uganda and Adjacent Territories. Annls Mus. r. Congo Belge, 8°, Zoology, 32: 1–206.
5. Merritt, R. W., & Cummins, K. W. (1997). An introduction to the aquatic insects of North America (3rd ed.). Dubuque: Kendall/Hunt Publishing Co. 720 Pg.
6. Pennak, R.W. 1953. Fresh-water Invertebrates of the United States. John Wiley & Sons, New York. 769pg.
7. Pennak, R. W, (1953). Fresh-water invertebrates of the United States. 2nd Edition, John Wiley & Sons, New York, 803 Pages.

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