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 24 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.
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.
Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:
The table below shows only published versions of the resource that are publicly accessible.
How to cite
Researchers should cite this work as follows:
Costa H, Marques A T, Zina H, Ribeiro E, Pedroso R, Múrias, T (2020): EDP Foz-Tua: Black Wheatear (Oenanthe leucura) (transects) - Ecological Monitoring Program [2011-12]. v1. EDP - Energias de Portugal. Dataset/Samplingevent. http://ipt.gbif.pt/ipt/resource?r=edp_tua_oenanthe_leucura_trs_pme&v=1.0
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.
This resource has been registered with GBIF, and assigned the following GBIF UUID: 6730e69a-ba6d-41a6-b2e1-ed3d3bfa0995. EDP - Energias de Portugal publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Portugal.
Black Wheatear; Oenanthe leucura; occurrence; observations; line transects
Who created the resource:
Who can answer questions about the resource:
Who filled in the metadata:
The data were collected within an area of roughly 4x4 km around the mouth of the River Tua (Northeast Portugal), up to 45 km from the mouth, in the municipalities of Alijó, Carrazeda de Ansiães, Vila Flor and Mirandela.
|Bounding Coordinates||South West [41.18, -7.549], North East [41.507, -7.138]|
The taxonomic coverage of this dataset spans 1 phylum, 1 class, 1 order, 3 families, 4 genera and 4 species.
|Family||Muscicapidae, Motacillidae, Oriolidae|
|Start Date / End Date||2011-06-16 / 2012-01-22|
The dataset contains records of the Black Wheatear (Oenanthe leucura, Aves) and other terrestrial birds collected in an area with suitable habitat for the species in the lower Tua valley and included in the Ecological Monitoring Program (2011-12) of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected in the winter of 2011 and in the spring of 2012, during field visits to seven transects distributed in the sampling area. All observations were made with binoculars and/or telescopes
|Title||EDP Foz-Tua: Black Wheatear (Oenanthe leucura) (transects) - Ecological Monitoring Program [2011-12]|
|Identifier||EDP Biodiversity Data|
|Funding||EDP Biodiversity Data|
|Study Area Description||The study was conducted in a main an area of roughly 4x4 km, centered around the mouth of the Tua river and in a subsidiary area located upstream, closer to Mirandela, with favorable habitat conditions for the species.|
|Design Description||The objective of the study was to monitor changes in the distribution patterns and abundance of the black Wheatear in the lower valley of the river Tua, to assess the potential effects on the species of the Foz Tua Hydroelectric Dan, during the dam construction (2011-2015) and flooding (2016-17). The transects were discontinued after 2012, being replaced by point counts.|
The personnel involved in the project:
Sampling was designed to cover the main known or potential habitats for the Black Wheatear along the lower Tua valley affected by the Foz-Tua dam (the mouth) and upstream. A total of seven line transects was established in the selected area, covering the most important habitats for the species (vineyards and traditional olive-orchards). All transects were sampled once in the winter and 1-2 times in the reproductive period (spring), in the early morning or late afternoon. Each transect was walked on foot at a constant speed of 1-2 km/h and lasted no less than 30 minutes. Playback songs were used to locate the territorial (and vagrant) birds. Species identification and assessment of age and sex (when possible) were made “in loco”.
|Study Extent||The data were collected in a main area of roughly 4x4 km around the mouth of river Tua and in a subsidiary area located upstream, closer to Mirandela, with favorable habitat conditions for the species (Northeast Portugal), up to 45 km from the mouth, in the municipalities of Alijó, Carrazeda de Ansiães, Mirandela and Vila Flor.|
|Quality Control||All identifications were performed by qualified technicians.|
Method step description:
- To be completed
|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.|