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EDP Baixo Sabor: Bat acoustic sampling - Compensatory Measures Program (MC1) [2013-2014]

Citation

Paulo M, Vingada J V, Rodrigues P, Garrido N, Pinto N, Duro V, Oliveira F, Múrias T (2020). EDP Baixo Sabor: Bat acoustic sampling - Compensatory Measures Program (MC1) [2013-2014]. Version 1.1. EDP - Energias de Portugal. Sampling event dataset https://doi.org/10.15468/gg6xhc accessed via GBIF.org on 2022-05-22.

Description

The dataset contains records of bats (Chiroptera) collected in the lower valley of River Sabor (NE Portugal), in the scope of the long-term Ecological Monitoring Program (PME) of the Baixo Sabor Hydroelectric Dams (AHBS), promoted by EDP – Energias de Portugal, S.A. Specifically, this dataset includes results of surveys made in the scope of the monitoring of the project of Compensation Habitat of Vilariça valley for Chiroptera (MC1). Data were collected between April 2013 and August 2014, during field visits to 2 selected points located along the Vilariça stream, a tributary of the Sabor river, located near its mouth. The presence and identity of bat species were assessed by acoustic sampling of the echo-location calls emitted in fligth. The records include taxa identified at the species, genus, family or order level, as well as groups of species that share common calls but cannot be identified to any taxonomic level, and that were thus assigned to 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 500-m buffer around 2 sampling points located in the final 5 km stretch of the Vilariça stream, in the municipality of Torre de Moncorvo.

Sampling

Sampling was designed to cover the most relevant feeding habitats for Chiroptera along the 5km final stretch of the Vilariça stream. Two sampling points located at least 100 m apart were set in the area. Each point was visited at least once per season: spring (April-May), reproduction (July) and post-breeding (August-October). Sampling was carried out when there were favourable weather conditions, including temperature above 10ºC and absence of strong winds and rainfall. Acoustic sampling in each plot was initiated at sunset and had a fixed duration of 90 minutes. 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 Sony ICD-PX312) 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 analysis of the acoustic records were peformed using the sound analysis program BatSound Pro (Pettersson Elektronik AB). This program generates graphs (oscillogram, sonogram and power spectra) using the various sound variables that allow the identification of species or complexes of species detected. 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 to the species level, 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 technicians

Method steps

  1. To be completed

Taxonomic Coverages

The taxonomic coverage of this dataset spans 1 class, 1 order, 3 families, 9 genera and 6 species positively identified.
  1. Chordata
    rank: phylum
  2. Mammalia
    rank: class
  3. Chiroptera
    rank: order
  4. Rhinolophidae
    rank: family
  5. Vespertilionidae
    rank: family
  6. Molossidae
    rank: family

Geographic Coverages

Data were collected in a buffer of 500 meters around 2 sampling points located in the final 5 km of the Vilariça stream, a tributary of the Sabor river located near its mouth.

Bibliographic Citations

Contacts

Mota Paulo
originator
position: General Coordinator
BioLink - Consultoria Ambiental, Unipessoal, Lda
Pta. Caminho da Cruz, 9
Vila Nova de Gaia
4405-625 Vila Nova de Gaia
PT
email: biolink.lda@gmail.com
José Vítor Vingada
originator
position: Scientific/Fieldwork Coordinator
BioLink - Consultoria Ambiental, Unipessoal, Lda
Pta. Caminho da Cruz, 9
Vila Nova de Gaia
4405-625 Vila Nova de Gaia
PT
Pedro Rodrigues
originator
position: Technician
BioLink - Consultoria Ambiental, Unipessoal, Lda
Pta. Caminho da Cruz, 9
Vila Nova de Gaia
4405-625 Vila Nova de Gaia
PT
Nuno Garrido
originator
position: Technician
BioLink - Consultoria Ambiental, Unipessoal, Lda
Pta. Caminho da Cruz, 9
Vila Nova de Gaia
4405-625 Vila Nova de Gaia
PT
Nuno Pinto
originator
position: Technician
BioLink - Consultoria Ambiental, Unipessoal, Lda
Pta. Caminho da Cruz, 9
Vila Nova de Gaia
4405-625 Vila Nova de Gaia
PT
Virgínia Duro
originator
position: Technician
BioLink - Consultoria Ambiental, Unipessoal, Lda
Pta. Caminho da Cruz, 9
Vila Nova de Gaia
4405-625 Vila Nova de Gaia
PT
Frederico Oliveira
originator
position: Technician
BioLink - Consultoria Ambiental, Unipessoal, Lda
Vila Nova de Gaia
4405-625 Vila Nova de Gaia
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
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