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EDP Foz Tua Otter (Lutra lutra) - Complementary Studies [2010]

Latest version published by EDP - Energias de Portugal on Apr 24, 2020 EDP - Energias de Portugal

The dataset contains records of otter (Lutra lutra, Mammalia) collected in the Rivers Tua and Douro sub-basins and included in the Complementary Studies (2009-10) of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected in February 2010 during field visits to 41 sampling points with favorable habitats in 16 10x10 km UTM squares in the river Tua sub-basin and in five sampling points in the river Douro, close to the the Tua mouth. The presence of individuals was recorded by direct observation of signs (scats).

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 45 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)
    45
  • Occurrence 
    45

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 45 records in English (8 KB) - Update frequency: unknown
Metadata as an EML file download in English (13 KB)
Metadata as an RTF file download in English (12 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:

da Fonte D, Santos-Reis M, Pedroso N, Chora S, múrias, T (2020): EDP Foz Tua Otter (Lutra lutra) - Complementary Studies [2010]. v1. EDP - Energias de Portugal. Dataset/Samplingevent. http://ipt.gbif.pt/ipt/resource?r=edp_tua_otter_ec42&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: ec267ce7-77a2-44e6-a928-bd571f2d02d9.  EDP - Energias de Portugal publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Portugal.

Keywords

otter; Lutra lutra; occurrence; observations; scats

Contacts

Who created the resource:

David da Fonte
General Coordinator
AGRIPRO - AMBIENTE Rua Castilho, N.º 65 – 3.º Esq. 1250-068 LISBOA Lisbon PT
Margarida Santos-Reis
Scientific Coordinator
DBA-FCUL (Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa) Edifício C2 - Piso 2, Campo Grande 1749-016 Lisboa Lisbon PT
Nuno Pedroso
Technician
DBA-FCUL (Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa)
Suze Chora
Technician
DBA-FCUL (Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa)

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

Geographic Coverage

The data were collected in the river Tua sub-basin and in a section of river Douro sub-basin near the tua's mouth (about 15 km to the south), in the municipalities of Carrazeda de Ansiães, Alijó, Vila Flor, Murça, Mirandela, Macedo de Cavaleiros, Valpaços, Vila Pouca de Aguiar, S. João da Pesqueira and Tabuaço.

Bounding Coordinates South West [41.055, -7.718], North East [41.509, -7.045]

Taxonomic Coverage

The taxonomic coverage of this dataset spans 1 phylum, 1 class, 1 order, 1 family, 1 genus and 1 species.

Phylum  Chordata
Class  Mammalia
Order  Carnivora
Family  Mustelidae

Temporal Coverage

Start Date / End Date 2010-02-01 / 2010-02-09

Project Data

The dataset contains records of otter (Lutra lutra, Mammalia) collected in plots along rivers Tua and Douro sub-basins and included in the Complementary Studies of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected in February 2010, during field visits to 46 sampling plots with favorable habitats for otter located in 16 10x10 km UTM squares in the river Tua sub-basin (41) and in river Douro in the vicinity of Tua mouth (five plots). The occurrence of the target taxa was documented through 27 observations of scats identified as belonging to the target species.

Title EDP Foz Tua Otter (Lutra lutra) - Complementary Studies [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 the sub-basins of river Tua, prior to the construction of the Foz-Tua Hydroelectric Dam, and river Douro. The sampling was centered in suitable habitats for otter in sampling points distributed on 16 10x10 km UTM squares, covering the main course of river Tua and its main tributaries (two plots per square). In addition, five plots were sampled in river Douro, in and around the Tua mouth (one to the north - Linhares stream - and four to the south - rivers Távora, Pinhão, Torto and mouth of river Tua).
Design Description The objective of the study was to characterize and update the distribution of the otter in the river Tua's sub-basin before the dam construction, to gather quality data to support the design and implementation of mitigation and/or compensation measures. A set of five additional points was sampled in river Douro and its tributaries around the Tua mouth, to establish the baseline for the study of the connectivity between Tua and Douro's otter populations.

The personnel involved in the project:

Author
David da Fonte
Author
Margarida Santos-Reis
Author
Nuno Pedroso
Author
Suze Chora
Metadata Provider
Tiago Múrias

Sampling Methods

Sampling was designed to cover the course of river Tua and its main tributaries, from the spring to the mouth, and a portion of river Douro and the mouths of its tributaries located in the vicinity of river Tuah. The same grid of 10x10 km squares sampled in the last otter national census (Trindade et al., 1998) was used to sample the Tua's sub-basin. In each square, two sampling plots were randomly established in the selected water line(s). In each sampling point, a transect of 200-600 m was performed along the margins, looking for signs of presence (mostly scats) in suitable places (prominent stones and vegetation in the margins of the water line). Each plot was visited once in February 2010, in dry or light rain periods, to minimize the chance of leaching of the feacal material. The scats were identified "in loco" by expert researchers.

Study Extent The data were collected in the river Tua sub-basin and in a section of river Douro sub-basin near the tua's mouth (about 15 km to the south), in the municipalities of Carrazeda de Ansiães, Alijó, Vila Flor, Murça, Mirandela, Macedo de Cavaleiros, Valpaços, Vila Pouca de Aguiar, S. João da Pesqueira and Tabuaço.
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_otter_ec42