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EDP Foz-Tua: Cabrera vole (Microtus cabrerae) & Small Mammals - Baseline Studies [2008]

Latest version published by EDP - Energias de Portugal on Apr 15, 2019 EDP - Energias de Portugal

The dataset contains records of Cabrera vole (Mictotus cabrerae) and other small mammals (Rodentia and Eulipotyphla) collected in the lower valley of the River Tua, included in the Addendum to the Baseline Studies (2008) of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected between November and December 2008 during field visits to 22 samping points, within habitats favourable habitats for M. cabrerae, on the area of the lower Tua valley directly or indirectly affected by the Foz Tua dam. The presence of individuals was recorded by capture with Sherman traps. The identification of the individuals attributed to the genus Microtus was confirmed by molecular analysis.

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 22 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)
    22
  • Occurrence 
    110

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 22 records in English (11 KB) - Update frequency: unknown
Metadata as an EML file download in English (18 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:

Alves P C, Paupério J, Vale-Gonçalves H M, Valongueira A, Silva A, João C, Barros P, Múrias T (2019): EDP Foz-Tua: Cabrera vole (Microtus cabrerae) & Small Mammals - Baseline Studies [2008]. v1. EDP - Energias de Portugal. Dataset/Samplingevent. http://ipt.gbif.pt/ipt/resource?r=edp_tua_small_mammals_eia&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: 48cb0337-b711-4995-9da9-c5bae58e27e1.  EDP - Energias de Portugal publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Portugal.

Keywords

Cabrera vole; Microtus cabrerae; small mammals; occurrence; captures; Sherman traps; Rodentia; Eulipotyphla

Contacts

Who created the resource:

Paulo Célio Alves
General Coordinator
CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto Campus Agrário de Vairão 4485-661 Vairão Vairão PT
Joana Paupério
Fieldwork Coordinator
CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto Campus Agrário de Vairão 4485-661 Vairão Vairão PT
Hélia Marisa Vale-Gonçalves
Technician
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro Quinta de Prados 5001-801 Vila Real Vila Real PT
Alexandra Valongueira
Technician (collaborator)
CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto Campus Agrário de Vairão 4485-661 Vairão PT
Ana Silva
Technician (collaborator)
CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto Campus Agrário de Vairão 4485-661 Vairão Vairão PT
Catarina João
Technician (collaborator)
CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto Campus Agrário de Vairão 4485-661 Vairão Vairão PT
Paulo Barros
Technician
CITAB - Centro de Investigação e Tecnologias Agro-ambientais e Biológicas, Laboratório de Ecologia Aplicada, Universidade de Trás-os-Montes e Alto Douro Quinta de Prados 5001-801 Vila Real Vila Real PT

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

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

The data were collected within a 5-km buffer around the valley of the River Tua (Northeast Portugal), up to 45 km from the mouth, in the municipalities of Carrazeda de Ansiães, Alijó, Murça, Vila Flor and Mirandela.

Bounding Coordinates South West [41.179, -7.608], North East [41.465, -7.196]

Taxonomic Coverage

The taxonomic coverage of this dataset spans 1 phylum, 1 class, 2 orders, 3 families, 4 genera and 5 species.

Phylum  Chordata
Class  Mammalia
Order  Rodentia,  Eulipotyphla
Family  Soricidae,  Sciuridae,  Muridae

Temporal Coverage

Start Date / End Date 2008-11-10 / 2008-12-23

Project Data

The dataset contains records of the Cabrera vole (Microtus cabrerae) and other small mammals (Rodentia and Eulipotyphla) collected in plots along the lower Tua River, included in the Addendum to the Baseline Studies of the Environmental Impact Assessment (2008) of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected between November and December 2008 during field visits to 22 sampling points with favourable habitats for the Cabrera vole (fallows, bushes, riverine habitats with low vegetation) within a 5-km buffer around the River Tua lower valley. The occurrence of the target taxa was documented through 238 capture events in 22 sampling points. In total, five taxa were identified, all to the species rank. The most abundant species were Apodemus sylvaticus (115 observation/capture events), Crocidura russula (50), Microtus lusitanicus (36) and Mus spretus (31).

Title EDP Foz-Tua: Cabrera vole (Microtus cabrerae) & Small Mammals - Baseline Studies [2008]
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-basins 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 was centered in suitable habitats to the Cabrera vole (fallows, bushes, riverine habitats with low vegetation) found in a 5-km radius buffer around the future reservoir banks, and up to 45 km from the Tua mouth.
Design Description The objective of the study was to identify all the potential places of occurrence of the Cabrera vole in a buffer of 5 km around 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:

Author
Paulo Célio Alves
Author
Joana Paupério
Author
Hélia Marisa Vale-Gonçalves
Author
Alexandra Valagueira
Author
Ana Silva
Author
Catarina João
Author
Paulo Barros
Metadata Provider
Tiago Múrias

Sampling Methods

Sampling was designed to cover all the potential habitats of the Cabrera vole (fallows, bushes, riverine habitats with low vegetation) in and around the lower Tua valley affected by the Foz Tua dam. A preliminary selection of suitable places was made using aerial photos and other cartographic means, followed by a visit to the area. A total of 24 areas were initially selected based on the habitat characteristics, but only 20 were actually used for sampling. A total of 25 sampling plots located in 20 of the 24 areas with suitable habitat was surveyed for signs of the presence of microtidae (tracks, faeces, latrines) in November-December 2008. When this inspection was positive, the plot was earmarked for a trapping session, to confirm the presence of Cabrera vole. As a result of this survey, 22 sampling plots were selected for trapping. Each trapping session consisted in the installation of lines of “Sherman” traps distributed every 2 m in all suitable habitats of the sampling plot. The number of traps set at each point depended mainly on its area and the amount of presence signs detected. Traps were baited with apple, carrot and commercial cat food (for Soricidae) and were covered with vegetation carded cotton, to provide food and thermal comfort for captured individuals, respectively. Each trap was controlled at least twice a day (one in the morning and another in the late afternoon). Traps were baited in one day and remained set for more three consecutive days and nigths. All the captured specimens were administered with a light volatile ethyl ether anesthesia, to ensure a correct and safe manipulation procedure. Each specimen was individually assigned a temporary marking (haircut), aiming to recognize the animal in the event of a recapture situation, aged and sexed (with the exception of shrews when non-lactating), measured and subsequently released. The following biometric parameters were taken: body length (mm), tail length (mm), hind leg length (mm), ear length (mm) and weight (grams). All identifications were made with appropriate field guides (Mathias et al., 1998; Palomo and Gisbert, 2002). The dichotomous key of Castells and Mayo (1993) was used to separate the Cabrera vole from other species of microtidae. Whenever possible, a tissue sample (a small portion of the ear) was taken from all captured microtidae to confirm the species identification. This was performed through the amplification and sequencing of a mitochondrial gene, cytochrome b, which has 1140 base pairs (base pairs, bp) and is widely studied in the European populations of Microtus. The DNA of all collected Microtus samples was extracted using a Extraction kit ("Qiagen Dneasy Tissue Kit"). The sequences obtained were then compared with the sequences available on GenBank. The captures were carried out under the License No 176/2008/CAPT, issued on October 2008, by the Institute of Nature and Forests Conservation (ICNF) to the senior field technician.

Study Extent The data were collected within a 5-km buffer around the Tua lower valley (Northeast Portugal), up to 45 km from the mouth, and in Ferradosa stream (Douro sub-basin), in the municipalities of Carrazeda de Ansiães, Vila Flor, Murça and Mirandela.
Quality Control All identifications were performed by qualified technicians

Method step description:

  1. To be completed

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 http://ipt.gbif.pt/ipt/resource?r=edp_tua_small_mammals_eia