EDP Foz Tua: Bat Roosts - Baseline and Complementary Studies [2008-2010]

The dataset contains records of bats (Chiroptera) collected in the lower valley of the River Tua and included in the Baseline (2008-2009) and Complementary (2010) Studies of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected between November 2008 and April 2010 during field visits to 27 known or presumed bat roosts used for hibernation and/or reproduction, within a 15-km radius buffer around the Tua valley. The presence of individuals was recorded by direct observation. When the identification raised doubts, or the numbers were too high to allow individual examination, the specimens were photographed for later identification. The records include taxa identified at the species or genus level. In several occasions it was not possible to separate the potential species of the genus Myotis, so they were simply included in 2 “species complexes”: “large” Myotis (2 species) and “small” Myotis (5 species).

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 (undegraded) 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

f8f60588-ccd0-4721-92c6-a330fb203344

Publication Date
2020-12-15
Title

EDP Foz Tua: Bat Roosts - Baseline and Complementary Studies [2008-2010]

Abstract

The dataset contains records of bats (Chiroptera) collected in the lower valley of the River Tua and included in the Baseline (2008-2009) and Complementary (2010) Studies of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected between November 2008 and April 2010 during field visits to 27 known or presumed bat roosts used for hibernation and/or reproduction, within a 15-km radius buffer around the Tua valley. The presence of individuals was recorded by direct observation. When the identification raised doubts, or the numbers were too high to allow individual examination, the specimens were photographed for later identification. The records include taxa identified at the species or genus level. In several occasions it was not possible to separate the potential species of the genus Myotis, so they were simply included in 2 “species complexes”: “large” Myotis (2 species) and “small” Myotis (5 species).

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 (undegraded) 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 made available biodiversity data collected during impact assessment and biological monitoring studies.

Dataset Language

ENGLISH

 
Dataset Creator
  Profico Ambiente e Ordenamento Lda - Susana Batista (General Coordinator)

Rua Alfredo da Silva, 11B

,

Lisbon

,

1300-040 Lisboa

,

PORTUGAL

Dataset Creator
  Profico Ambiente e Ordenamento Lda - Sérgio Bruno Ribeiro (Fieldwork Coordinator)

Rua Alfredo da Silva, 11B

,

Lisbon

,

1300-040 Lisboa

,

PORTUGAL

Dataset Creator
  Profico Ambiente e Ordenamento Lda - Pedro Geraldes (Technician)

Rua Alfredo da Silva, 11B

,

Lisbon

,

1300-040 Lisboa

,
Dataset Creator
  Profico Ambiente e Ordenamento Lda - Pedro Araújo (Technician)

Rua Alfredo da Silva, 11B

,

1300-040 Lisboa

,

PORTUGAL

Dataset Creator
Metadata Provider
  CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto - Tiago Múrias

Campus Agrário de Vairão - Crasto

,

Vairão, Vila do Conde

,

4485-661

,

PORTUGAL

Associated Party
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)

  • occurrence

Keywords (NA)

  • Bats; observation; hibernation; reproduction; roosts

Keywords (GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml)

  • Samplingevent

Geographic Coverage

Geographic Description

The data were collected within a 15-km buffer around the valley of the River Tua (Northeast Portugal), up to 50 km from the mouth, in the municipalities of Carrazeda de Ansiães, Vila Flor, Mirandela and Sabrosa.

Bounding Box

West Bounding Coordinate

-7.561

East Bounding Coordinate

-7.119

North Bounding Coordinate

41.529

South Bounding Coordinate

41.17

Temporal Coverage

Range of Dates

Begin Date

2008-11-07

End Date

2010-04-23

Taxonomic Coverage

General Taxonomic Coverage

The taxonomic coverage of this dataset spans 1 phylum, 1 class, 1 order, 3 families, 4 genus and 9 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

Vespertilionidae

Taxonomic Classification

Taxonomic Rank Name

Family

Taxonomic Rank Value

Miniopteridae

Taxonomic Classification

Taxonomic Rank Name

Family

Taxonomic Rank Value

Rhinolophidae

Taxonomic Classification

Taxonomic Rank Name

Family

Taxonomic Rank Value

Molossidae

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

2021-11-29T09:05:49Z

Citation

Batista S, Ribeiro S B, Geraldes P, Araújo P, Múrias T (2020). EDP Foz Tua: Bat Roosts - Baseline and Complementary Studies [2008-2010]. Version 1.2. EDP - Energias de Portugal. Sampling event dataset https://doi.org/10.15468/mowmkp 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 Foz Tua: Bat Roosts - Baseline and Complementary Studies [2008-2010]

Personnel

Individual Name

Given Name

Susana

Surname

Batista

Role

AUTHOR

Personnel

Individual Name

Given Name

Sérgio Bruno

Surname

Ribeiro

Role

AUTHOR

Personnel

Individual Name

Given Name

Pedro

Surname

Geraldes

Role

AUTHOR

Personnel

Individual Name

Given Name

Pedro

Surname

Araújo

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 Tua River, and included in the Baseline (2008-2009) and Complementary (2010) Studies of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected between November 2008 and April 2010, during field visits to 27 known or presumed bat roosts (caves, mines, tunnels, bulidings, etc) used for hibernation and/or reproduction, within a 15-km buffer around the River Tua lower valley. The occurrence of the target taxa was documented through 907 observation events. In total, 11 taxa were identified, of which nine to the species rank and one to the genus rank. The “species complexes” of Myotis could potentially add 2 more species to the list. The most common species (>100 records) were Miniopterus schreibersii (357 records) and Myotis nattereri (207 records). The species complex of the “large” Myotis (Myotis myotis and M. blythii), with 120 records, was also significant. 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 Tua, prior to the construction and subsequent flooding of the lower part of this river’s valley by the Foz-Tua Hydroelectric Dam. The sampling included all known and presumed roosts located in the flooded area and those found in a 15 km radius buffer around the future reservoir banks (caves, mines, tunnels, buildings, etc.), and up to a length of about 50 km from the Tua mouth.

Design Description

Description

The objective of the study was do document the usage of known and presumed bat roosts in the Tua lower valley before the dam construction, and to gather quality data to support the design and implementation of mitigation and/or compensation measures.

 
 

Methods

• Method

Method Step

Description

To be completed

Sampling

Study Extent

The data were collected within a 15-km buffer around the Tua lower valley (Northeast Portugal), up to 50 km from the mouth, in the municipalities of Carrazeda de Ansiães, Vila Flor, Alijó, Mirandela and Sabrosa.

Sampling Description

Sampling was designed to cover all known and presumed bat roosts in the study area, including railroad tunnels, caves, mines, wells and all sorts of abandoned or little used buildings. A place was considered to be a roost when the presence of bats was confirmed, either by direct observations or by indirect evidences (eg., faeces, urine stains, etc.). Each roost was visited once in winter (January-February, hibernation period) and once in spring (April, reproduction period) of 2010. In 2008-2009, only a subset of the sites (railroad tunnels) were visited.



All potential roosts were searched for the presence of bat colonies by two observers, which recorded all individuals of each species detected. The time spent in each refuge varied according to the number of bats present, and the accessibility conditions.



Species identification were usually made “in loco”, with the aid of head-torches, binoculars and field guides. When the visual identification raised doubts, or the numbers present were too large to be identified in a suitable time, photographs were taken to be identified later. Sometimes, reliable counts were not possible (e.g. due to the packing of the groups), so only the presence of the species was recorded.

qualityControl

Description

All individual identifications were performed by qualified technicians