説明
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.
データ レコード
この オカレンス（観察データと標本) リソース内のデータは、1 つまたは複数のデータ テーブルとして生物多様性データを共有するための標準化された形式であるダーウィン コア アーカイブ (DwC-A) として公開されています。 コア データ テーブルには、243 レコードが含まれています。
この IPT はデータをアーカイブし、データ リポジトリとして機能します。データとリソースのメタデータは、 ダウンロード セクションからダウンロードできます。 バージョン テーブルから公開可能な他のバージョンを閲覧でき、リソースに加えられた変更を知ることができます。
バージョン
次の表は、公にアクセス可能な公開バージョンのリソースのみ表示しています。
引用方法
研究者はこの研究内容を以下のように引用する必要があります。:
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
権利
研究者は権利に関する下記ステートメントを尊重する必要があります。:
パブリッシャーとライセンス保持者権利者は National Fisheries Resources Research Institute。 This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.
GBIF登録
このリソースをはGBIF と登録されており GBIF UUID: 46090fec-fafb-44c1-aa10-2de851fcff41が割り当てられています。 GBIF Uganda によって承認されたデータ パブリッシャーとして GBIF に登録されているNational Fisheries Resources Research Institute が、このリソースをパブリッシュしました。
キーワード
Occurrence; Lake Edward; Uganda; Freshwater biodiversity; Observation
連絡先
- メタデータ提供者 ●
- 最初のデータ採集者 ●
- データ利用者 ●
- 連絡先
- メタデータ提供者 ●
- 最初のデータ採集者
- メタデータ提供者 ●
- 最初のデータ採集者
- メタデータ提供者 ●
- 最初のデータ採集者
- 連絡先
地理的範囲
The dataset covers Lake Edward, Uganda
| 座標（緯度経度） | 南 西 [-0.514, 29.6], 北 東 [-0.044, 29.932] |
|---|
生物分類学的範囲
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 |
時間的範囲
| 生成(収集）期間 | 2019 |
|---|
プロジェクトデータ
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.
| タイトル | Identification, characterisation and mapping of fish breeding areas on Lakes Edward and Albert |
|---|---|
| 識別子 | CONTRACT NO: NELSAP/LEAF/2018/SVS/FBA |
| ファンデイング | The project was funded by the Nile Basin Initiative (NBI), through the Nile Equatorial Lakes Subsidiary Action Program (NELSAP) |
| Study Area Description | 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. |
| 研究の意図、目的、背景など（デザイン） | 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. |
プロジェクトに携わる要員:
収集方法
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.
| Study Extent | 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. |
|---|---|
| Quality Control | 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). |
Method step description:
- 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.
追加のメタデータ
| 代替識別子 | 46090fec-fafb-44c1-aa10-2de851fcff41 |
|---|---|
| http://ipt-uganda.gbif.fr/resource?r=lake_edward_leaf_19 |