This resource is composed of occurrences and abundance of macroinvertebrates collected in Lake Wamala in 2012 and 2013
The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 141 records.
This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.
The table below shows only published versions of the resource that are publicly accessible.
How to cite
Researchers should cite this work as follows:
Pabire W G (2020): Macroinvertebrates of Lake Wamala, 2012-2013. v1.0. National Fisheries Resources Research Institute. Dataset/Occurrence. http://ipt-uganda.gbif.fr/resource?r=climate_change_wamala&v=1.0
Researchers should respect the following rights statement:
The publisher and rights holder of this work is National Fisheries Resources Research Institute. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License.
This resource has been registered with GBIF, and assigned the following GBIF UUID: 6b7eced3-d4a2-49ac-9c81-1eaabb2d6369. National Fisheries Resources Research Institute publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Uganda.
Occurrence; Lake Wamala; Macro-invertebrates; Uganda; Observation
- Point Of Contact
The resource covers Lake Wamala. The lake is a UNEP designated environmental change hotspot (https://na.unep.net/atlas/webatlas.php?id=391).
|Bounding Coordinates||South West [0.228, 31.727], North East [0.428, 32.025]|
Macro-invertebrates taxa identified to class, family and genus.
|Genus||Ablabesmyia, Bulinus, Caenis, Chaoborus, Chironomus, Clinotanypus, Cloeon, Procladius, Tanypus|
The project examined how climate variability and change contribute to changes in aquatic productivity, fisheries, and livelihoods. The project integrating secondary and primary data obtained from two satellite lakes, Wamala in Central and Kawi in North-eastern Uganda. The lakes acted as case studies because they have manifested changes in water levels associated with variability and change in climate. The aim of the project was to mainstream climate change issues into fisheries management in Uganda.
|Title||Equipping Small Scale Fishers and Riparian Communities with Adaptation Strategies to Cope with Impacts of Climate Variability and Change|
|Identifier||Project No: 2011 CPR 209|
|Funding||The project was supprted by the Rockefeller Foundation|
|Study Area Description||The project was implemented on Lake Wamala. Lake Wamala is an environmental change hotspot within the Lake Victoria watershed. The lake has an area of 250 sq. km, an average depth of 5m and a catchment of ≈2000 sq. km.|
|Design Description||Field data collection was conducted on biotic communities including macroinvertebrates to provide field evidence of impacts of climate change on aquatic productivity processes. Representative sites were sampled quarterly in 2012 and 2013. The intention was to obtain data comparable to historical data to deduce shifts in biotic communities attributed to impacts of climate change.|
The personnel involved in the project:
- Principal Investigator
At each site, a sample of macroinvertebrates was collected using a Ponar grab (238 cm2 open-jaw area). Three vertical hauls of sediment at each site were taken. These were mixed to form one composite. Each composite sample was sieved through a 400µm nitex mesh to concentrate the sample. All the samples were placed in labeled sample bottles and preserved with 5% sugar formalin solution for taxonomic identification and enumeration in the laboratory. In the laboratory, the formalin-fixed benthic macroinvertebrate samples were rinsed by tap water to remove preservatives before the sorting of the organisms. All the animals were separated, counted, and identified to the smallest taxonomic level under a dissecting microscope. Appropriate taxonomic keys were used (Mandahl-Barth, 1954; Pennak, 1953; Merritt & Cummins, 1997). Numerical abundance (individuals per square metre, Ind.m-2) was estimated for each taxon.
|Study Extent||Data was collected between 2012 and 2013 is representative sites, covering near shore, offshore, and river mouths habitats.|
|Quality Control||In the field, samples were immediately treated with formalin to keep the organisms intact. To avoid loss of organisms during sample processing, appropriate mesh sizes during sieving. Appropriate taxonomic keys were used.|
Method step description:
- 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.
- Mendahl-Barth, G. (1954). The Freshwater Mollusks of Uganda and Adjacent Territories. Annls Mus. r. Congo Belge, 8°, Zoology, 32: 1–206.
- 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.
- Pennak, R.W. (1953). Fresh-water Invertebrates of the United States. John Wiley & Sons, New York. 769pg.