The data in this sampling event 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 85 records.
1 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.
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.
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How to cite
Researchers should cite this work as follows:
Pinheiro P, Godinho F, Rivaes R, Oliveira J, Múrias, T (2020): EDP Foz-Tua: Fishes – Ecological Monitoring Program [2011-2017]. v1. EDP - Energias de Portugal. Dataset/Samplingevent. http://ipt.gbif.pt/ipt/resource?r=edp_tua_fish_pme&v=1.0
Researchers should respect the following rights statement:
The publisher and rights holder of this work is EDP - Energias de Portugal. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.
This resource has been registered with GBIF, and assigned the following GBIF UUID: aba82d28-5a92-46b9-b38c-e8774caab20d. EDP - Energias de Portugal publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Portugal.
Fish; electric fishing; ecological monitoring program; Water Framework Directive; Foz-Tua dam
Who created the resource:
Who can answer questions about the resource:
Who filled in the metadata:
The data were collected along the River Tua (Northeast Portugal) and its main tributaries, up to 52 kms from the mouth, in the municipalities of Alijó, Carrazeda de Ansiães, Murça, Vila Flor and Mirandela.
|Bounding Coordinates||South West [41.187, -7.534], North East [41.5, -7.16]|
The taxonomic coverage of this dataset spans 1 phylum, 1 class, 3 orders, 5 families, 11 genera and 12 species.
|Order||Cypriniformes, Cyprinodontiformes, Perciformes|
|Family||Cyprinidae, Poeciliidae, Centrarchidae, Percidae, Cobitidae|
|Start Date / End Date||2011-04-12 / 2015-08-08|
The dataset contains records of Fishes (Pisces) collected in the River Tua and its main tributaries, within the Ecological Monitoring Program (2011-2015) of the Construction Phase of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected from April 2011 to August 2015, during field visits to 17 sampling river reaches located along the lower Tua valley and its main tributaries, up to 52 kms upstream The occurrence of the target taxa was documented through 21963 records of individuals. The most abundant species (>1000 records) were Luciobarbus bocagei (6431 individuals), Pseudochondrostoma duriense (5473), Squalius alburnoides (4892) and Lepomis gibbosus (1368). A large number (1584) of individuals of the Cyprinidae family were juveniles (total length < 40 mm) and could not be identified in the field.
|Title||EDP Foz-Tua: Fishes – Ecological Monitoring Program [2011-2015]|
|Identifier||EDP Biodiversity Data|
|Funding||The work was funded by EDP - Energias de Portugal, S.A.|
|Study Area Description||The study was conducted in the lower part of the sub-basin of river Tua, covering all the stretch affected by the Foz-Tua Hydroelectric Dam and a control area upstream, up to 52 kms from the Tua mouth, as well as the main tributaries, both in the area affected and in a control area.|
|Design Description||The objective of the study was to characterize fish community dynamics to indicate changes in the ecological quality of river ecosystems in the lower Tua sub-basin, along all the stretch affected by the dam and in several control sampling stations upstream, during the dam construction (2011-2015).|
The personnel involved in the project:
The capture method employed was electric fishing and the samples were taken during the day, by a team of three to four elements, using a portable device with a gasoline generator set (for safety reasons used as a fixed element), with pulsed direct current output (Hans Grassl ELT 60II-HI, 500-1000 V, 1300W), or a portable rechargeable battery pack for dorsal transport with continuous pulse output (Hans Grassl IG200 / 2C; 400-1000 V; <70 Hz), The methodology adopted depended also on the depth of the section to be sampled: i) In fully wadeable sections (depth <1 m), the operator positioned himself at the downstream limit of the section manipulating the anode, moved in a zigzag movement upstream, ensuring coverage of all habitats in the river system (INAG, 2008); and ii) n sections that are not entirely wadeable (depth >1 m), the operator positioned on the downstream limit of the section, manipulating the anode and moving along the two margins (minimum length of 200 m on each bank was used, according to Oliveira et al., 2007), with the aid of a pneumatic boat, in order to ensure the total coverage of the riparian habitats. During sampling, the welfare of the captured specimens was ensured by depositing them in plastic buckets with portable oxygenators, which were kept in shelters at cover of direct sun exposure. The usual safety measures for working with electrofishing were strictly followed. The captured individuals were identified up to the species, and measured (total length in mm) with the aid of an ichthyometer. After these procedures, the native specimens were returned to their habitat in the vicinity of the capture sites with suitable conditions; at the request of the Institute of Conservation of Nature and Forestry (ICNF), exotic individuals were eliminated.
|Study Extent||The data were collected along the Tua lower valley (Northeast Portugal), up to 52 km from the mouth, and in its main tributaries, in the municipalities of Alijó, Carrazeda de Ansiães, Murça, Vila Flor and Mirandela.|
|Quality Control||All individual identifications were performed by qualified technicians|
Method step description:
- To be completed
- INAG, I.P. 2008. Manual para a avaliação biológica da qualidade da água em sistemas fluviais segundo a Directiva Quadro da Água - Protocolo de amostragem e análise para a Fauna Piscícola. Ministério do Ambiente, do Ordenamento do Território e do Desenvolvimento Regional. Instituto da Água, I.P. Oliveira, J. M. , Santos, J. M., Teixeira, A., Fereira, M. T., Pinheiro, P. J., Geraldes, A. e J. Bochechas 2007. Avaliação da Qualidade Ecológica de Rios Portugueses: Programa Nacional de Monitorização de Recursos Piscícolas de Águas Interiores. DGRF, Lisboa.
|Purpose||This dataset is part of a broader initiative whereby the company EDP - Energias de Portugal S.A. will make available all biodiversity data collected during impact assessment and biological monitoring studies.|
|Maintenance Description||This resource will be regularly checked for accuracy.|