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

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 amp; 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.

Default

Identification

Alternate Identifier

ab97f7ef-ccea-40d7-bea3-fb761e67c528

Publication Date
2020-10-16
Title

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

Abstract

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 amp; 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.

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.

Dataset Language

ENGLISH

 
Dataset Creator
  BIOLINK - Consultoria Ambiental, Unipessoal, Lda - Paulo Mota (General Coordinator)

Praceta Caminho da Cruz, 9

,

Vila Nova de Gaia

,

4405-625 VN Gaia

,

PORTUGAL

Dataset Creator
  BIOLINK - Consultoria Ambiental, Unipessoal, Lda - José Vítor Vingada (Scientific fieldwork Coordinator)

Praceta Caminho da Cruz, 9

,

Vila Nova de Gaia

,

4405-625 VN Gaia

,

PORTUGAL

Dataset Creator
Dataset Creator
Dataset Creator
Dataset Creator
Dataset Creator
Metadata Provider
Dataset Contact
  EDP - Energias de Portugal - João Madeira (Manager)

Av. 24 de Julho, 12, Torre Nascente, Piso 4

,

Lisbon

,

1249-300 Lisboa

,

PORTUGAL

Keywords (GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml)

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

Geographic Coverage

Geographic Description

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 Box

West Bounding Coordinate

-7.164

East Bounding Coordinate

-6.24

North Bounding Coordinate

41.919

South Bounding Coordinate

41.102

Temporal Coverage

Range of Dates

Begin Date

2012-07-27

End Date

2014-08-27

Taxonomic Coverage

General Taxonomic Coverage

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

Taxonomic Classification

Taxonomic Rank Name

Phylum

Taxonomic Rank Value

Chordata

Taxonomic Classification

Taxonomic Rank Name

Class

Taxonomic Rank Value

Mammalia

Taxonomic Classification

Taxonomic Rank Name

Order

Taxonomic Rank Value

Chiroptera

Taxonomic Classification

Taxonomic Rank Name

Family

Taxonomic Rank Value

Rhinolophidae

Taxonomic Classification

Taxonomic Rank Name

Family

Taxonomic Rank Value

Vespertilionidae

License Information

Intellectual Rights

This work is licensed under a

Creative Commons Attribution (CC-BY) 4.0 License

.

 
 

Additional Metadata

Metadata

GBIF Metadata Block

Date Stamp

2021-11-29T09:07:44Z

Citation

Mota P, Vingada J V, Rodrigues P, Garrido N, Pinto N, Duro V, Oliveira F, Múrias T (2020). EDP Baixo Sabor: Bat Roosts [acoustic sampling] - Ecological Monitoring Program (PME) (2012-2014). Version 1.2. EDP - Energias de Portugal. Sampling event dataset https://doi.org/10.15468/mw5xgh accessed via GBIF.org on 2021-11-29.

Bibliography

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

Logo URL
http://ipt.gbif.pt/ipt/logo.do?r=edp_sabor_herpetology_baseline
 

Project

• Project

Title

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

Personnel

Individual Name

Given Name

Paulo

Surname

Mota

Role

AUTHOR

Personnel

Individual Name

Given Name

José Vítor

Surname

Vingada

Role

AUTHOR

Personnel

Individual Name

Given Name

Pedro

Surname

Rodrigues

Role

AUTHOR

Personnel

Individual Name

Given Name

Nuno

Surname

Garrido

Role

AUTHOR

Personnel

Individual Name

Given Name

Nuno

Surname

Pinto

Role

AUTHOR

Personnel

Individual Name

Given Name

Virgínia

Surname

Duro

Role

AUTHOR

Personnel

Individual Name

Given Name

Frederico

Surname

Oliveira

Role

AUTHOR

Personnel

Individual Name

Given Name

Tiago

Surname

Múrias

Role

ADMINISTRATIVE_POINT_OF_CONTACT

Abstract

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.

Funding

The work was funded by EDP - Energias de Portugal, S.A.

Study Area Description

Descriptor

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

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).

 
 

Methods

• Method

Method Step

Description

To be completed

Sampling

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.

Sampling Description

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.

qualityControl

Description

All individual identifications were performed by qualified technicians