Fish species occurrences from selected near shore and riverine habitats in Lake Edward (2019)

Occurrence
Dernière version Publié par National Fisheries Resources Research Institute le oct. 17, 2020 National Fisheries Resources Research Institute

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Description

This dataset is of fish occurrences observed in Lake Edward. Fishes were collected using gillnets from sheltered, riverine and rocky habitats in March and July 2019.

Enregistrements de données

Les données de cette ressource occurrence ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 243 enregistrements.

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.

Versions

Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.

Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Musinguzi L, Nsega M, Nkalubo W, Nakiyende H (2020): Fish species occurrences from selected near shore and riverine habitats in Lake Edward (2019). v1.2. National Fisheries Resources Research Institute. Dataset/Occurrence. http://ipt-uganda.gbif.fr/resource?r=lake_edward_leaf_19&v=1.2

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est National Fisheries Resources Research Institute. Ce travail est sous licence Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : 46090fec-fafb-44c1-aa10-2de851fcff41.  National Fisheries Resources Research Institute publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du GBIF Uganda.

Mots-clé

Occurrence; Lake Edward; Uganda; Freshwater biodiversity; Observation

Contacts

Laban Musinguzi
  • Fournisseur Des Métadonnées
  • Créateur
  • Utilisateur
  • Personne De Contact
Research Officer
National Fisheries Resources research Institute
ile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
UG
Monic Nsega
  • Fournisseur Des Métadonnées
  • Créateur
Principal research technitian
National Fisheries Resources research Institute
ile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
UG
Winnie Nkalubo
  • Fournisseur Des Métadonnées
  • Créateur
Director of Research
National Fisheries Resources research Institute
ile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
UG
Herbert Nakiyende
  • Fournisseur Des Métadonnées
  • Créateur
Research Officer
National Fisheries Resources research Institute
ile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
UG
Vianny Natugonza
  • Personne De Contact
Research Officer
National Fisheries Resources research Institute
ile Crescent, Plot 39/45, Jinja Opposite the wagon ferry terminal
Jinja
UG

Couverture géographique

The dataset covers Lake Edward, Uganda

Enveloppe géographique Sud Ouest [-0,514, 29,6], Nord Est [-0,044, 29,932]

Couverture taxonomique

The dataset covers fishes in Lake Edward, Uganda

Genus Haplochromis, Labeobarbus/Enteromius
Species Astatoreochromis alluaudi , Bagrus docmak, Clarias gariepinus, Coptodon zillii, Ctenopoma muriei, Haplochromis labiatus, Haplochromis squamipinnis, Labeo forskalii, Labeobarbus altianalis, Mormyrus kannume, Oreochromis niloticus, Oreochromis leucostictus, Protopterus aethiopicus

Couverture temporelle

Epoque de formation 2019

Données sur le projet

The project was an investment of the Nile Basin Initiative (NBI), through the Nile Equatorial Lakes Subsidiary Action Program (NELSAP) on lakes Edward and Albert as a trans-boundary lake to tackle anthropogenic and environmental threats to fisheries. The objective of the project was to identify, characterize and map fish breeding areas on the lakes in order to guide their gazettement and protection for sustainable management of the trans-boundary fisheries resources.

Titre Identification, characterisation and mapping of fish breeding areas on Lakes Edward and Albert
Identifiant CONTRACT NO: NELSAP/LEAF/2018/SVS/FBA
Financement The project was funded by the Nile Basin Initiative (NBI), through the Nile Equatorial Lakes Subsidiary Action Program (NELSAP)
Description du domaine d'étude / de recherche Lake Edward (surface area 2,300 Km2; average depth 17 m; maximum depth 117 m) is one of the African Great Rift lakes. It is shared between the Democratic Republic of Congo (DRC) (71%) and Uganda (29%). The lake’s major inflows are the Rwindi, Rutshuru, Nyamugasani, Ishasha, Taliha and Lubiriha rivers. The lake is connected to Lake George by the 36 km long Kazinga Channel. Most of the lake is bordered by Queen Elizabeth National Park in Uganda and Virunga National Park in the Democratic Republic of Congo (DRC). Lake Edward supports commercial fisheries in both DRC and Uganda.
Description du design The aim of the project was to identify sites suitable for designation as fish breeding areas. A reconnaissance survey was undertaken to characterize habitats along the shorelines in the lake to identify potential sites. Selection of study sites was based on known habitat preferences for fish (e.g. sandy, muddy, vegetated, and rocky areas) and local knowledge of the riparian communities about habitat types of the lake. At the end, 6 sites were selected for the study. The sites were diverse with different physical characteristics. Lubiriha: Associated with Lubiriha river mouth with vegetation fringes of phragmites and sandy bottom 1. Kayanja: Sheltered bay (lagoon) with vossia, phragmites, and cyperus sp. The sediment was moderate muddy 2. Nyamugasani: At the river mouth of Nyamusagani river with sandy bottom 3. Ruhandagati (Mukiyinja): Open sandy shoreline. The shoreline is forested and rocky. Vegetation is dominated by ambauch trees. The bottom was rocky and sandy. 4. Katako: Sheltered bay with muddy bottom. The shoreline is forested by ambatch trees and woodland 5. Rwenshama: Associated with Ntungwe river mouth, Ishasha river mouth and Izibibi river mouth. The fringes are vegetated by papyrus and ambauch trees. The bottom is sandy. 6. Kisenyi: Associated with Nyamweru river mouth. The shoreline consists of fringes of woodland, papyrus, and ambatch. The bottom is sandy.

Les personnes impliquées dans le projet:

Laban Musinguzi
Monic Nsega
Winnie Nkalubo
Herbert Nakiyende

Méthodes d'échantillonnage

Experimental gill-netting was carried out at selected stations. Experimental gill-netting was conducted twice in each site in March and July 2019. At each station, three fleets of graded mesh gill nets (ranging from size 1” to 8”) were set parallel to the shoreline out towards the open water. The inshore (1st) fleet was set next to the shoreline vegetation within 0-100 m distance. The middle fleet was set between 100 m and 200 m from the 1st fleet while the last (offshore) fleet was set more than 300 m from the shore. The nets were set in the evening (1800h – 1900h) and lifted at dawn (0500h – 0600h) the following morning. After retrieval of gill nets, fish were removed, sorted, identified to the lowest taxonomical category possible, counted and weighed.

Etendue de l'étude The sampling was conducted using experimental gill netting in Lake Edward. The experimental gill-netting was conducted twice in 2019. The first sampling was conducted in March and the second sampling, in July.
Contrôle qualité Measures taken to improve data quality included taking field photos of identified fish species; using fish identification keys to identify fish. Specimens for fish that could not be identified in the field were transferred to the laboratory for further processing. Species names were validated using FishBase (Froese & Paully, 2019).

Description des étapes de la méthode:

  1. Fish capture Fish were captured using experimental gill-nets set at selected stations. The gill-netting was done twice in 2019 (March and July). At each station, three fleets of multifilament gill nets of mesh sizes ranging from 1 to 8 inches were set parallel to the shoreline. The inshore (1st) fleet was set next to the shoreline vegetation within 0-100 m distance from the shoreline. The middle fleet was set between 100 m and 200 m from the 1st fleet while the last (offshore) fleet was set more than 300 m from the shore. The nets were set in the evening (1800h – 1900h) and retrieved at dawn the next day.
  2. Data processing Fish retrieved from gill-nets were sorted by taxa, counted and weighted.

Métadonnées additionnelles

Identifiants alternatifs 46090fec-fafb-44c1-aa10-2de851fcff41
http://ipt-uganda.gbif.fr/resource?r=lake_edward_leaf_19