Sampling event

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

Latest version published by EDP - Energias de Portugal on 15 December 2020 EDP - Energias de Portugal
Publication date:
15 December 2020
License:
CC-BY 4.0

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 40 records in English (62 KB) - Update frequency: unknown
Metadata as an EML file download in English (17 KB)
Metadata as an RTF file download in English (14 KB)

Description

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 & 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.

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 40 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)
40
Occurrence 
1600

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.

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:

Batista S, Ribeiro S B, Geraldes P, Araújo P, Múrias T (2020): EDP Foz Tua: Bat Roosts - Baseline and Complementary Studies [2008-2010]. v1.2. EDP - Energias de Portugal. Dataset/Samplingevent. http://ipt.gbif.pt/ipt/resource?r=edp_tua_batroosts_bcs_2008&v=1.2

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: f8f60588-ccd0-4721-92c6-a330fb203344.  EDP - Energias de Portugal publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Portugal.

Keywords

occurrence; Bats; observation; hibernation; reproduction; roosts; Samplingevent

Contacts

Susana Batista
  • Originator
General Coordinator
Profico Ambiente e Ordenamento Lda
Rua Alfredo da Silva, 11B
1300-040 Lisboa Lisbon
PT
Sérgio Bruno Ribeiro
  • Originator
Fieldwork Coordinator
Profico Ambiente e Ordenamento Lda
Rua Alfredo da Silva, 11B
1300-040 Lisboa Lisbon
PT
Pedro Geraldes
  • Originator
Technician
Profico Ambiente e Ordenamento Lda
Rua Alfredo da Silva, 11B
1300-040 Lisboa Lisbon
Pedro Araújo
  • Originator
Technician
Profico Ambiente e Ordenamento Lda
Rua Alfredo da Silva, 11B
1300-040 Lisboa
PT
Tiago Múrias
  • Metadata Provider
  • Originator
  • User
Researcher
CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto
Campus Agrário de Vairão
4485-661 Vairão Vairão
PT
João Madeira
  • Point Of Contact
Manager
EDP - Energias de Portugal
Av. 24 de Julho, 12, Torre Nascente, Piso 4
1249-300 Lisboa Lisbon
PT

Geographic Coverage

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 Coordinates South West [41.17, -7.561], North East [41.529, -7.119]

Taxonomic Coverage

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

Phylum Chordata
Class Mammalia
Order Chiroptera
Family Vespertilionidae, Miniopteridae, Rhinolophidae, Molossidae

Temporal Coverage

Start Date / End Date 2008-11-07 / 2010-04-23

Project Data

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.

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

The personnel involved in the project:

Susana Batista
  • Author
Sérgio Bruno Ribeiro
  • Author
Pedro Geraldes
  • Author
Pedro Araújo
  • Author
Tiago Múrias
  • Metadata Provider

Sampling Methods

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.

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.
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 made available biodiversity data collected during impact assessment and biological monitoring studies.
Maintenance Description This resource will be regularly checked for accuracy.
Alternative Identifiers f8f60588-ccd0-4721-92c6-a330fb203344
http://ipt.gbif.pt/ipt/resource?r=edp_tua_batroosts_bcs_2008