EDP Foz Tua: Bat Habitats - Ecological Monitoring Program (PME) and Program of Mitigation/Compensatory Measures (PMC, MC12H) - Exploration Phase (2018-2020)
Citation
Cabral J A, Barros P, Faria S, Carvalho D, Duro V, Brás L, Travassos P, Vale-Gonçalves H, Gomes C, Múrias T (2023). EDP Foz Tua: Bat Habitats - Ecological Monitoring Program (PME) and Program of Mitigation/Compensatory Measures (PMC, MC12H) - Exploration Phase (2018-2020). EDP. Sampling event dataset https://doi.org/10.15468/dxugeh accessed via GBIF.org on 2024-08-18.Description
The dataset contains records of bats (Chiroptera) collected in the lower valley of River Tua. Data were collected in the scope of the Ecological Monitoring Program (PME) and Program of Compensatory Measures (PMC, MC12H) of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected from March 2018 to October 2020 during field visits to 60 points located in suitable foraging habitats for bats, within a 5-km radius buffer around the lower valley of River Tua. The presence and identity of the bat species were assessed by acoustic sampling of the echo-location calls emitted in flight. The records include taxa identified at the species, genus, family or order level, as well as several potential species present in several acoustic “species complexes”.Purpose
This dataset is part of a broader initiative whereby the company EDP - Energias de Portugal S.A. will made available biodiversity data collected during impact assessment and biological monitoring studies.Sampling Description
Study Extent
The data were collected within a 5-km radius buffer around the lower valley of River Tua (Northeast Portugal), up to 40 km from the mouth, in the municipalities of Alijó, Carrazeda de Ansiães, Vila Flor, Mirandela and Murça.Sampling
Sampling was designed to cover all suitable foraging habitats for bats in the study area. A stratified sampling procedure was used, with the number of samples allocated to each habitat in proportion to the area occupied and/or its significance for bats. A total 0f 60 sampling points (56-PME and 4-PMC) was set in natural woodlands (10), forest plantations (mostly Eucalyptus and Pinus), (10) river margins (9), shrublands (9), orchards/olive orchards (6), vineyards (6), dryland crops (7) and cliffs (3). Each point of PME was visited monthly (March - October) from 2018 to 2020 and each point of PMC was visited monthly (July - August) from 2018 to 2020. Acoustic sampling was made within ± 3 hours of sunset, beginning 30 minutes after it. Each point of PME was sampled for 10 consecutive minutes and 15 minutes the points of PMC. The detection of the specimens in flight was made with a bat detector (Pettersson Elektronik, D240X model), with a frequency range of 10-120 kHz. The detector was connected to an automatic digital recorder (model Zoom H2n) which saved the recordings in a “Wave” format, at a frequency of 44 kHz and at an expanded mode of 10x, making them audible to the human ears while, at the same time, preserving the original acoustic characteristics. The analyses of bat sound records used the manual/traditional methodology based on the the software “Batsound Pro – Sound Analysis”, from Pettersson Elektronik. This software generates graphics (oscillograms, sonograms and power spectrums) that allow the identification of the detected species by comparing them with those available in reference bat sound libraries. The acoustic variables usually employed to manually identify the sounds are (1) the structure of the pulse, (2) the frequency of maximum energy (kHz), (3) the range of frequencies (kHz), (4) the pulse duration (ms), (5) the interval between pulses (ms), and (6) the pulse repetition rate (Hz). The exact identification of the bat species by sound analysis is not always possible, due to problems in detectability and/or identifiability. In the context of this work, whenever it was not possible to perform the identification until the species, the binomials, multinomials or genera to which the identification was possible were considered to be present. Thus, the presence of all species constituting these phonic groups (or “species complexes”) was considered possible.Quality Control
All individual identifications were performed by qualified techniciansMethod steps
- To be completed
Taxonomic Coverages
The taxonomic coverage of this dataset spans 1 phylum, 1 class, 1 order, 4 families, 10 genus and 13 species positively identified. Additionally, a set of 8 potential species may be present in the 23 “species complexes” identified.
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Chordatarank: phylum
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Mammaliarank: class
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Chiropterarank: order
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--------------rank: family
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Miniopteridaerank: family
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Molossidaerank: family
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Rhinolophidaerank: family
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Vespertilionidaerank: family
Geographic Coverages
The data were collected within a 5-km radius buffer around the lower valley of River Tua (Northeast Portugal), up to 40 km from the mouth, in the municipalities of Alijó, Carrazeda de Ansiães, Vila Flor, Mirandela and Murça.
Bibliographic Citations
Contacts
João Alexandre Cabraloriginator
position: Project Coordinator
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro
Quinta de Prados
Vila Real
5001-801 Vila Real
PT
email: jcabral@utad.pt
Paulo Barros
originator
position: Fieldwork Coordinator
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro
Quinta de Prados
Vila Real
5001-801 Vila Real
PT
Sandra Faria
originator
position: Technician
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro
Vila Real
PT
Diogo Carvalho
originator
position: Technician
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro
Vila Real
PT
Virgínia Duro
originator
position: Technician
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro
Vila Real
PT
Luís Brás
originator
position: Technician
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro
Vila Real
PT
Paulo Travassos
originator
position: Technician
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro
Vila Real
PT
Hélia Vale-Gonçalves
originator
position: Technician
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro
Vila Real
PT
Carla Gomes
originator
position: Technician
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro
Vila Real
PT
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