EDP Foz-Tua: Terrestrian Birds (count points) – Compensatory Measures Program, MC46B (Management of Raptors’ Feeding Habitats) [2018-19]

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 120 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.

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:

Cabral J A, Travassos P, Barros P, Carvalho D, Gomes C, Braz L, Duro V, Múrias T (2023). EDP Foz-Tua: Terrestrian Birds (count points) – Compensatory Measures Program, MC46B (Management of Raptors’ Feeding Habitats) [2018-19]. Version 1.1. EDP - Energias de Portugal. Samplingevent dataset. http://ipt.gbif.pt/ipt/resource?r=edp_tua_bird_prey_pt_2018-19&v=1.1

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is EDP. 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: 20604bc0-db51-41ae-9c7a-fa3f43b977d0.  EDP publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Portugal.

Keywords

Birds; prey species; Bonelli’s Eagle; Aquila fasciata; occurrence; winter; observations; point counts; compensatory measure MC46b; exploration phase; Foz-Tua dam

Contacts

Geographic Coverage

The data were collected within a 5-km buffer around the two territories of the Bonelli’s Eagle (Aquila fasciata) in lower valley of the River Tua (Northeast Portugal), up to 45 km from the mouth, in the municipalities of Alijó, Carrazeda de Ansiães, Murça and Mirandela.

Taxonomic Coverage

The taxonomic coverage of this dataset spans 1 phylum, 1 class, 10 orders, 25 families, 56 genus and 65 species.

Temporal Coverage

Project Data

The dataset contains records of terrestrian birds (Aves) collected in the two breeding territories of Bonelli’s Eagle (Aquila fasciata) in the lower valley of the River Tua and included in the Compensatory Measure MC46b (“Management of Raptor’s Feeding Habitats”) (2018-2020) of the Compensatory Measures Program of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected in late winter (February-March) of 2018-2019, during field visits to 120 sampling points: 60 “intervention” points (identified with a “I”) located near the structures purposely built to promote the occurrence/fixation of the prey species (feeders and drinkers) in the two territories, and 60 “control” points (identified with a “c”) located in the vicinity of the intervention areas. Each point is sampled every two years. All observations were made with binoculars and/or telescopes. The occurrence of the target taxa (and other bird species) was documented through 120 observation events. In total, 1734 observations were identified to the species rank. The most abundant species (>100 records) were Serinus serinus (216 individuals), Fringilla coelebs (183), Turdus merula (123) and Columba palumbus (118).

The personnel involved in the project:

Sampling Methods

Sampling was designed to compare the abundances of the target species (and, in general, of the whole local bird community) inside (“intervention” points) and outside (“control” points) the areas were actions of the Compensatory Measure MC46B took place, in the known breeding territories of the Bonelli’s Eagle in the lower Tua valley. A total of 120 sampling points distributed in pairs (one “intervention”, one “control”) were set (20 in deforested areas, 20 in feeders/drinkers, 20 in artificial shelters, and the respective controls), which are to be surveyed in the long term. All points were sampled in the winter, in the early morning or late afternoon, every two years. Each sampling event had a duration of 10 minutes, in which all birds seen or heard in three bands of 50m around the point (<50 m, 50-100m, >100m) were recorded. Species identification and assessment of age and sex (when possible) were made “in loco”, with the help of appropriate field guides.

Method step description:

1. To be completed

Additional Metadata