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EDP Baixo Sabor: Bat Roosts [acoustic sampling] - Ecological Monitoring Program (PME) (2012-2014)

Latest version published by EDP - Energias de Portugal on Oct 16, 2020 EDP - Energias de Portugal

The dataset contains records of bats (Chiroptera) collected in the lower valley of River Sabor, in the scope of the long-term Ecological Monitoring Program (PME) of the Baixo Sabor Hydroelectric Dams, promoted by EDP – Energias de Portugal, S.A. Data were collected between July 2012 and August 2014, during field visits to 12 known bat hibernation, reproduction and pre-dispersion (post-reproduction) roosts with restricted access (caves and mine entrances). These roosts were located within a 5-km radius buffer around the lower valley of River Sabor. 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 2 acoustic “species complexes”. Due to the vulnerability of the roost locations, the precision of the geographic coordinates was degraded to 0.01, according to the recommendations of Chapman & Grafton (2008). The dataset with the original (undergraded) coordinates may be provided upon request by the resource contact from EDP, who will define the terms and conditions for its use.

Data Records

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 80 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.

  • Event (core)
    80
  • Occurrence 
    400

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.

Downloads

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 80 records in English (25 KB) - Update frequency: unknown
Metadata as an EML file download in English (17 KB)
Metadata as an RTF file download in English (14 KB)

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Mota P, Vingada J V, Rodrigues P, Garrido N, Pinto N, Duro V, Oliveira F, Múrias, T (2020): EDP Baixo Sabor: Bat Roosts [acustic sampling] - Ecological Monitoring Program (PME) (2012-2014). v1. EDP - Energias de Portugal. Dataset/Samplingevent. http://ipt.gbif.pt/ipt/resource?r=edp_sabor_chiroptera_roosts_acoustic&v=1.0

Rights

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.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: ab97f7ef-ccea-40d7-bea3-fb761e67c528.  EDP - Energias de Portugal publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Portugal.

Keywords

bats; occurrence; acoustic sampling; hibernation; reproduction; refuges; roosts

Contacts

Who created the resource:

Paulo Mota
General Coordinator
BIOLINK - Consultoria Ambiental, Unipessoal, Lda Praceta Caminho da Cruz, 9 4405-625 VN Gaia Vila Nova de Gaia PT
José Vítor Vingada
Scientific & fieldwork Coordinator
BIOLINK - Consultoria Ambiental, Unipessoal, Lda Praceta Caminho da Cruz, 9 4405-625 VN Gaia Vila Nova de Gaia PT
Pedro Rodrigues
Technician
BIOLINK - Consultoria Ambiental, Unipessoal, Lda PT
Nuno Garrido
Technician
BIOLINK - Consultoria Ambiental, Unipessoal, Lda
Nuno Pinto
Technician
BIOLINK - Consultoria Ambiental, Unipessoal, Lda
Virgínia Duro
Technician
BIOLINK - Consultoria Ambiental, Unipessoal, Lda
Frederico Oliveira
Technician
BIOLINK - Consultoria Ambiental, Unipessoal, Lda

Who can answer questions about the resource:

João Madeira
Manager
EDP - Energias de Portugal Av. 24 de Julho, 12, Torre Nascente, Piso 4 1249-300 Lisboa Lisbon PT

Who filled in the metadata:

Tiago Múrias
Researcher
CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto Campus Agrário de Vairão 4485-661 Vairão Vairão PT

Geographic Coverage

Data were collected in an area of 62,500 ha corresponding to 25 5x5 km squares around the lower Sabor river affected by the Sabor Dam, and in an additional area of 30,000 ha not directly affected by the dam, encompassing a set of 12 5x5 km squares (control area), in the municipalities of Torre de Moncorvo, Mogadouro, Vimioso, Bragança and Miranda do Douro

Bounding Coordinates South West [41.102, -7.164], North East [41.919, -6.24]

Taxonomic Coverage

The taxonomic coverage of this dataset spans 1 class, 1 order, 2 families, 2 genera and 2 species positively identified.

Phylum  Chordata
Class  Mammalia
Order  Chiroptera
Family  Rhinolophidae,  Vespertilionidae

Temporal Coverage

Start Date / End Date 2012-07-27 / 2014-08-27

Project Data

The dataset contains records of bats (Chiroptera) collected in roosts along the lower valley of River Sabor, in the scope of the Ecological Monitoring Program (PME) of the Baixo Sabor Hydroelectric Dams, promoted by EDP – Energias de Portugal, S.A. Data were collected between July 2012 and August 2014, during field visits to 12 selected bat roosts (entrance of caves and mines with restricted access) for hibernation, reproduction and pre-dispersion, within a 5-km radius around the lower valley of River Sabor. The occurrence of the target taxa was documented through 129 observation events. In total, 2 taxa were identified up to the species rank. The “species complexes” could potentially add 3 more species to the list. The two species identified were Rhinolophus ferrumequinum (36 records of presence) and R. hipposideros (30) The “species complexes” of the “small” Myotis (M. mistacinus, M. emarginatus, M. escalerai, M. beschteinii and M. daubentonii) was present in one sampling occasion and the Rhinolophus complex (Rhinolophus euryale and R. mehelyi) in 30. Thirty detections could not be safely attributed to any species or species complexes. Due to the vulnerability of the roost locations, the precision of the geographic coordinates was degraded to 0.01.

Title EDP Baixo Sabor: Bat Roosts [acustic sampling] - Ecological Monitoring Program (PME) (2012-2014)
Identifier EDP Biodiversity Data
Funding The work was funded by EDP - Energias de Portugal, S.A.
Study Area Description The study was conducted in part of the sub-basin of river Sabor directly or indiirectly affected by the construction of the Baixo Sabor Hydroelectric Dam, as well as in control areas nearby. The sampling included 12 known roosts with restricted access (caves and mines) in a radius of 5 km around the flooded area (caves, mines, tunnels, buildings, etc.), and to a total lenght of 90 km upstream, in the municipalities of Torre de Moncorvo, Mogadouro, Vimioso, Bragança and Miranda do Douro
Design Description The objective of the study was to monitor the fate of bats roosts (hibernation and/or reproduction, and pre-dispersion periods) that could not be monitored by visual methods, and associated bat populations in the area of the Baixo Sabor Hydroelectric Dam, centered in a 5-km radius buffer around the river, during the final phases of construction and flooding (2012-2104).

The personnel involved in the project:

Author
Paulo Mota
Author
José Vítor Vingada
Author
Pedro Rodrigues
Author
Nuno Garrido
Author
Nuno Pinto
Author
Virgínia Duro
Author
Frederico Oliveira
Metadata Provider
Tiago Múrias

Sampling Methods

Sampling was designed to cover all the bat roosts in the study area that could not be accessed due to security reasons, particularly mines and caves. Each point, located at the entrance of the roost, was visited at least once per season - spring (April-June), reproduction (July) and post-breeding (September-October) - in favorable conditions (temperature above 10º 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 analyses of the acoustic records were performed using the sound analysis program BatSound Pro (Pettersson Elektronik AB). This program generates graphs (oscillogram, sonogram and power spectra) where 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.

Study Extent The data were collected within a 5-km radius buffer around the lower valley of River Sabor Northeast Portugal), up to 90 km from the mouth, in the municipalities of Torre de Moncorvo, Alfândega da Fé, Mogadouro, Macedo de Cavaleiros, Vimioso and Bragança.
Quality Control All individual identifications were performed by qualified technicians

Method step description:

  1. To be completed

Bibliographic Citations

  1. Chapman AD & Grafton O (2008) Guide to Best Practices for Generalising Sensitive Species-Occurrence Data. Copenhagen: GBIF Secretariat. https://doi.org/10.15468/doc-b02j-gt10

Additional Metadata

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.
Maintenance Description This resource will be regularly checked for accuracy.
Alternative Identifiers ab97f7ef-ccea-40d7-bea3-fb761e67c528
http://ipt.gbif.pt/ipt/resource?r=edp_sabor_chiroptera_roosts_acoustic