Descripción
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.
Registros
Los datos en este recurso de registros biológicos han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 243 registros.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
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
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es National Fisheries Resources Research Institute. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento-NoComercial (CC-BY-NC 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: 46090fec-fafb-44c1-aa10-2de851fcff41. National Fisheries Resources Research Institute publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF Uganda.
Palabras clave
Occurrence; Lake Edward; Uganda; Freshwater biodiversity; Observation
Contactos
- Proveedor De Los Metadatos ●
- Originador ●
- Usuario ●
- Punto De Contacto
- Proveedor De Los Metadatos ●
- Originador
- Proveedor De Los Metadatos ●
- Originador
- Proveedor De Los Metadatos ●
- Originador
- Punto De Contacto
Cobertura geográfica
The dataset covers Lake Edward, Uganda
| Coordenadas límite | Latitud Mínima Longitud Mínima [-0,514, 29,6], Latitud Máxima Longitud Máxima [-0,044, 29,932] |
|---|
Cobertura taxonómica
The dataset covers fishes in Lake Edward, Uganda
| Género | Haplochromis, Labeobarbus/Enteromius |
|---|---|
| Especie | 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 |
Cobertura temporal
| Periodo de formación | 2019 |
|---|
Datos del proyecto
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.
| Título | Identification, characterisation and mapping of fish breeding areas on Lakes Edward and Albert |
|---|---|
| Identificador | CONTRACT NO: NELSAP/LEAF/2018/SVS/FBA |
| Fuentes de Financiación | The project was funded by the Nile Basin Initiative (NBI), through the Nile Equatorial Lakes Subsidiary Action Program (NELSAP) |
| Descripción del área de estudio | 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. |
| Descripción del diseño | 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. |
Personas asociadas al proyecto:
Métodos de muestreo
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.
| Área de Estudio | 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. |
|---|---|
| Control de Calidad | 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). |
Descripción de la metodología paso a paso:
- 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.
- Data processing Fish retrieved from gill-nets were sorted by taxa, counted and weighted.
Metadatos adicionales
| Identificadores alternativos | 46090fec-fafb-44c1-aa10-2de851fcff41 |
|---|---|
| http://ipt-uganda.gbif.fr/resource?r=lake_edward_leaf_19 |