http://ipt-uganda.gbif.fr/resource?r=macroinvertebratesforson
Benthic macroinvertebrate taxa occurrences and composition associated with a cage aquaculture farm on Lake Victoria, Uganda
Willy Gandhi
Pabire
National Fisheries Resources Research Institute
Research technician
Nile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
343
UG
+256776959037
gpabire@yahoo.com
Robert
Egessa
National Fisheries Resources Resources Research Institute
Research officer
Nile Crescent, Plot 39/45, Jinja opposite the Wagon ferry terminal
Jinja
343
UG
robert.egessa@gmail.com
Lucas
Mwebaza-Ndawula
National Fisheries Resources Resources Research Institute
Senior research officer
Nile Crescent, Plot 39/45, Jinja opposite the Wagon ferry terminal
Jinja
343
UG
mugenda@gmail.com
Laban
Musinguzi
National Fisheries Resources Research Institute
Research officer
Nile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
343
UG
+256775701126
labanmusinguzi@firi.go.ug
https://labanmusinguzi.com/
https://scholar.google.com/citations?user=m2Dzl1gAAAAJ&hl=en
Vianny
Natugonza
National Fisheries Resources Resources Research Institute
Research officer
Nile Crescent, Plot 39/45, Jinja opposite the Wagon ferry terminal
Jinja
343
viannynatugonza@firi.go.ug
https://scholar.google.ca/citations?user=KewxfP8AAAAJ&hl=en
Willy Gandhi
Pabire
National Fisheries Resources Research Institute
Research technician
Nile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
343
UG
+256776959037
gpabire@yahoo.com
Laban
Musinguzi
National Fisheries Resources Research Institute
Research officer
Nile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
343
UG
+256775701126
labanmusinguzi@firi.go.ug
https://labanmusinguzi.com/
https://scholar.google.com/citations?user=m2Dzl1gAAAAJ&hl=en
pointOfContact
2019-04-17
eng
This dataset presents occurences and abundance of macroinvertebrate taxa recorded in sites in relation to a cage fish farm in Lake Victoria, Uganda
Sampling event
macro-invertebrates
Uganda
Lake Victoria
Cage aquaculture
GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml
This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.
The geographical area covers the location of the cage fish farm where data was collected.
33.191
33.208
0.411
0.403
This information is about the benthic macro-invertebrates (ie; invertebrates which live on or in the sediment at the bottom of the water bodies and are big enough to be seen with naked eyes).
genus
Ablabesmyia
species
Anisus natalensis
genus
Aspatheria
family
Baetidae
species
Bellamya unicolor
genus
Biomphalaria
genus
Bulinus
species
Byssanodonta parasitica
species
Caelatura alluaudi
species
Caelatura hauttecoeuri
species
Caelatura monceti
genus
Caenis
species
Caridina nilotica
family
Ceratopogonidea
genus
Chaoborus
family
Chironomidae
subfamily
Chironominea
genus
Chironomus
species
Cleopatra pirothi
genus
Clinotanypus
species
Corbicula africana
genus
Cryptochironomus
genus
Dipsuedopsis
genus
Economus
genus
Ephemerella
species
Etheria eliptica
genus
Euthraulus
species
Gabbia humerosa
family
Heptageniidae
class
Hirudinea
genus
Ictinogomphus
species
Lentorbis junodi
family
Leptoceridae
family
Libellulidae
species
Melanoides tuberculata
species
Mutela bourguignati
class
Oligochaeta
family
Perlidae
genus
Phyllomacomia
species
Pila ovata
species
Pisidium victoriae
species
Povilla adusta
genus
Procladius
genus
Pseudoneureclipsis
genus
Sphaerium
genus
Tanypus
genus
Tanytarsus
genus
Terithemis
genus
Tricorythus
asNeeded
Laban
Musinguzi
National Fisheries Resources Research Institute
Research officer
Nile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
343
UG
+256775701126
labanmusinguzi@firi.go.ug
https://labanmusinguzi.com/
https://scholar.google.com/citations?user=m2Dzl1gAAAAJ&hl=en
Willy Gandhi
Pabire
National Fisheries Resources Research Institute
Research technician
Nile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
343
UG
+256776959037
gpabire@yahoo.com
Collection of the macroinvertebrates
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.
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.
Identification of macroinvertebrates
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 x 25 magnification.
The monitoring project commenced in 2011. In that year, sampling was conducted once in February, May, September and November at each of the selected sampling points in each transect.
A Ponar grab (with open jaw area, 238cm2) was used to take sediment samples for analysis of benthic macroinvertebrates. Three spread hauls were taken from each of the selected areas (see design above). The bottom type at each point was described from the grabbed contents. Each of the three samples (hauls) from each area was then concentrated placed in labeled sample bottles, and preserved with 5% formalin solution and taken for laboratory analysis. In the laboratory, each sample was rinsed with water to remove the formalin and then placed on a white flat-bottomed tray. Using pair of forceps all macro-invertebrates were sorted from the sediment and the individual taxa identified to the lowest possible taxonomic level using identification manuals and a dissecting binocular microscope at x 25 magnification. All taxa from the different hauls were recorded and individuals of each taxon enumerated to estimate their densities from which the following results were generated. The taxa were identified using taxonomic keys by Mandahl-Barth (1954), Pennak (1953), and Merritt and Cummins (1997).
The samples were immediately processed in the field and treated with formalin to keep the organisms of interest intact and prevent them from rotting. To avoid loss of organisms during sample processing, appropriate mesh sizes were used.
Environmental monitoring of Source of the Nile (SON) cage fish farm in Napoleon Gulf, northern Lake Victoria
Willy Ghandi
Pabire
curator
Robert
Egessa
principalInvestigator
Lucas
Mwebaza-Ndawula
principalInvestigator
The project is part of a monitoring intervention that was established to monitor the impacts of cage aquaculture on water environment. This followed the introduction of a cage aquaculture in northern Lake Victoria in 2010. The environment monitoring is undertaken at Source of the Nile, a private cage fish farm, in Napoleon gulf, northern Lake Victoria. The monitoring is justified by the fact that cage aquaculture negatively impacts environmental conditions due to release of nutrients into the water, leading to undesirable impacts such as eutrophication, spread of diseases, genetic dilution for native species, and conflicts with other uses. Eutrophication can create anoxic conditions in sediments thus changing the abundance and composition of the resident organisms especially macroinvertebrates.
Funding is provided by Source of the Nile Fish Farm Limited
The study was undertaken at location of a fish farm. The farm is located near the headwaters of the River Nile, Napoleon gulf, Lake Vitoria, Uganda (Mwebaza-Ndawula et al. 2013).
Three study transects were originally set up for the study. Transect 1 was approximately 1 km upstream of the area with fish cages (USC. Tansect 2 was located within the fish cage rows (WC) and transect 3 was approximately 1 km downstream of the fish cages (DSC). Each transect contained three sampling points, at intervals of 50 meters apart. These are named sequentially as site one, site two and site three under each transect category. However, as the fish farm expanded, some areas previously under some of the transects started being included under cages. As a result, a change in design was implemented since 2017 to include other sites namely between cages, reference point, upstream point and and within cages site 4.
2019-04-17T06:00:50.591+00:00
dataset
Pabire W G, Egessa R, Mwebaza-Ndawula L, Musinguzi L, Natugonza V (2019): Benthic macroinvertebrate taxa occurrences and composition associated with a cage aquaculture farm on Lake Victoria, Uganda. v1.1. National Fisheries Resources Research Institute. Dataset/Samplingevent. http://ipt-uganda.gbif.fr/resource?r=macroinvertebratesforson&v=1.1
Mwebaza-Ndawula, L. et al. 2013. Effects of cage fish culture on water quality and selected biological communities in northern Lake Victoria, Uganda. Uganda Journal of Agricultural Sciences, 14(2), 61 – 75.
Mandahl-Barth, G. (1954). The freshwater mollusks of Uganda and adjacent territories. Sciences Zoologiques 32: 206 pp.
Merritt, R. W., & Cummins, K. W. (1997). An introduction to the aquatic insects of North America (3rd ed.). Dubuque: Kendall/Hunt Publishing Co. 720 Pages.
Pennak, R. W. (1953). Fresh-water invertebrates of the United States. New York: The Ronald Press Company.
Pennak, R.W. 1953. Fresh-water invertebrates of the United States.
2011-current
http://ipt-uganda.gbif.fr/resource?id=macroinvertebratesforson/v1.1.xml