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

David  da Fonte1, Margarida Santos-Reis2, Nuno Pedroso3, Suze Chora3, Tiago Múrias4

1 AGRIPRO - AMBIENTE, Rua Castilho, N.º 65 – 3.º Esq., 1250-068 LISBOA, Lisbon, Portugal; 2 DBA-FCUL (Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa), Edifício C2 - Piso 2, Campo Grande, 1749-016 Lisboa, Lisbon, Portugal; 3 DBA-FCUL (Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa), ; 4 CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, 4485-661 Vairão, Vairão

Corresponding author(s): David  da Fonte (lisboa@agriproambiente.pt)Margarida Santos-ReisNuno PedrosoSuze Chora, Tiago Múrias (tdsantos@cibio.up.pt)

Received {date}; Revised {date}; Accepted {date}; Published {date}

Citation: Combination of authors, year of data paper publication (in parentheses), Title, Journal Name, Volume, Issue number (in parentheses), and doi of the data paper.

Resource Citation

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&amp;v=1.0

Abstract

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).

Keywords: otter; Lutra lutra, occurrence; observations; scats

General description

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. 

Project details

Project title: EDP Foz Tua Otter (Lutra lutra) - Complementary Studies  [2010]
Personnel: David da Fonte, Margarida Santos-Reis, Nuno Pedroso, Suze Chora, Tiago Múrias
Funding: The work was funded by EDP - Energias de Portugal, S.A. 
Study area descriptions/descriptor: 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. 

Data published through GBIF: http://ipt.gbif.pt/ipt/resource?r=edp_tua_otter_ec42

Taxonomic coverage

General taxonomic coverage description: The taxonomic coverage of this dataset spans 1 phylum, 1 class, 1 order, 1 family, 1 genus and 1 species.
Taxonomic ranks
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Mustelidae

Spatial coverage

General spatial 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.
Coordinates: 41°3'18''N and 41°30'32.4''N Latitude; 7°43'4.8''W and 7°2'42''W Longitude 

Temporal coverage: February 1, 2010 - February 9, 2010

Methods

Method step description: To be completed
Study extent description: 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.
Sampling description: 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.
Quality control description: All identifications were performed by qualified technicians 

Datasets

Dataset description
Object name: Darwin Core Archive EDP Foz Tua Otter (Lutra lutra) - Complementary Studies  [2010]
Character encoding: UTF-8
Format name: Darwin Core Archive format
Format version: 1.0
Distribution: http://ipt.gbif.pt/ipt/archive.do?r=edp_tua_otter_ec42
Publication date of data: 2020-04-24
Language: English
Licences of use: Creative Commons Attribution (CC-BY) 4.0 License

Metadata language: English
Date of metadata creation: 2020-04-09
Hierarchy level: Dataset