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EDP Foz-Tua: Diurnal Butterflies (Lepidoptera) - Ecological Monitoring Program (2014-2017)

Citation

Costa H, Salgueiro N, Marques A T, Coelho H, Silva M, Caetano M, Romão F, Peixoto M, Múrias T (2021). EDP Foz-Tua: Diurnal Butterflies (Lepidoptera) - Ecological Monitoring Program (2014-2017). Version 1.3. EDP. Sampling event dataset https://doi.org/10.15468/tcxun4 accessed via GBIF.org on 2025-05-18.

Description

The dataset contains records of Butterflies (Lepidoptera) collected in the lower valley of the River Tua, and included in the Ecological Monitoring Program (2011-2017) of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected between July 2014 and August 2017 during field visits to 33 sampling transects with favorable habitats on the area of the lower Tua valley directly or indirectly affected by the Foz Tua dam, and in a small stream of the Douro basin. The occurrence of the target species was recorded when individuals were seen or captured in the selected transects.

Purpose

This dataset is part of a broader initiative whereby the company EDP - Energias de Portugal S.A. will make available biodiversity data collected during impact assessment and biological monitoring studies.

Sampling Description

Study Extent

The data were collected within a 5-km buffer around the lower Tua River valley and in Ferradosa stream, in the Douro sub-basin (Northeast Portugal), up to 45 km from the mouth in the municipalities of Carrazeda de Ansiães, Vila Flor, Alijó, Murça and Mirandela.

Sampling

Sampling was designed to cover the main habitat types for diurnal butterflies in and around the lower River Tua valley affected by the Foz Tua dam and in the Ferradosa stream (Douro basin). Each sampling point was visited twice per year in spring (April-June) and summer (July-August). Each sampling transect, of about 500 m in lenght, was walked on foot at a constant speed and avoiding stops at hotspots (ie., places with a large influx of Lepidopterans) in order to avoid sampling biases. Adults were monitored during their flight period, between 9:30 and 16:30, on days with appropriate weather conditions (temperature above 13ºC, light wind, little cloudiness, no rain or fog), with a hand-held net. All individuals observed or captured in 5 m buffer in front or to the sides of the observer (never to the backwards) were recorded, to avoid duplication of counts. Identification was performed by visual observation, using appropriated field guides. Although this method is optimized to monitor flying adults, whenever caterpillars or pupae were observed they were also recorded and photographed for later identification.

Quality Control

All identifications were performed by qualified technicians

Method steps

  1. To be completed

Taxonomic Coverages

The taxonomic coverage of this dataset spans 1 phylum, 1 class, 1 order, 5 families, 44 genera and 61 species and 1 subspecies.
  1. Insecta
    rank: class
  2. Lepidoptera
    rank: order
  3. Hesperiidae
    rank: family
  4. Lycaenidae
    rank: family
  5. Nymphalidae
    rank: family
  6. Papilionidae
    rank: family
  7. Pieridae
    rank: family

Geographic Coverages

The data were collected within a 5-km buffer around the valley of the River Tua (Northeast Portugal), in Trás-os-Montes e Alto Douro region, up to 50 km from the mouth, and in a small stream in the Douro sub-basin (Ferradosa stream), in the municipalities of Carrazeda de Ansiães, Alijó, Murça, Vila Flor and Mirandela.

Bibliographic Citations

Contacts

Hugo Costa
originator
position: General Coordinator 1
BioInsight
Rua Antero de Quental, Nº52 Loja B
Odivelas
2675-690 Odivelas
PT
email: info@bioinsight.pt
Nuno Salgueiro
originator
position: General Coordinator 2
BioInsight
Rua Antero de Quental, Nº52 Loja B
Odivelas
2675-690 Odivelas
PT
email: info@bioinsight.pt
Ana Teresa Marques
originator
position: Scientific Coordinator 1
BioInsight
Rua Antero de Quental, Nº52 Loja B
Odivelas
2675-690 Odivelas
PT
email: info@bioinsight.pt
Helena Coelho
originator
position: Scientific Coordinator 2
BioInsight
Rua Antero de Quental, Nº52 Loja B
Odivelas
2675-690 Odivelas
PT
email: info@bioinsight.pt
Margarida Silva
originator
position: Technician
BioInsight
Marco Caetano
originator
position: Technician
BioInsight
Fernando Romão
originator
position: Technician
BioInsight
Miguel Peixoto
originator
position: Technician
BioInsight
Tiago Múrias
metadata author
position: Researcher
CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto
Campus Agrário de Vairão
Vairão
4485-661 Vairão
PT
email: tdsantos@cibio.up.pt
João Madeira
administrative point of contact
position: Manager
EDP - Energias de Portugal
Av. 24 de Julho, 12, Torre Nascente, Piso 4
Lisbon
1249-300 Lisboa
PT
email: Joao.Madeira@edp.pt
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