EDP Foz-Tua: Cabrera vole (Microtus cabrerae) - Ecological Monitoring Program, Exploration Phase [2017-2020]

Enregistrements de données

Les données de cette ressource données d'échantillonnage ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 76 enregistrements.

1 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension est illustré ci-dessous.

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.

Versions

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Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Cabral J A, Travassos P, Vale-Gonçalves H, Barros P, Duro V, Brás L, Carvalho D, Paupério J, Quirós J, Múrias T (2023): EDP Foz-Tua: Cabrera vole (Microtus cabrerae) - Ecological Monitoring Program, Exploration Phase [2017-2020]. v1.0. EDP - Energias de Portugal. Dataset/Samplingevent. http://ipt.gbif.pt/ipt/resource?r=edp_tua_cabrera_2018-20&v=1.0

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est EDP. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : fb9d1b2f-2716-4afd-82d6-459722a4a457.  EDP publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du GBIF Portugal.

Mots-clé

Cabrera vole; Microtus cabrerae; small mammals; occurrence; indirect evidence; Rodentia; exploration phase

Contacts

Couverture géographique

The data were collected within a 2-km buffer around the valley of the River Tua (Northeast Portugal), up to 50 km from the mouth, in the municipalities of Carrazeda de Ansiães, Murça, Vila Flor and Mirandela.

Couverture taxonomique

The taxonomic coverage of this dataset spans 1 phylum, 2 classes, 3 orders, 5 families 6 genera and 7 species.

Couverture temporelle

Données sur le projet

The dataset contains records of the Cabrera vole (Microtus cabrerae) and similar species of the class Rodentia and Soricomoprha collected in plots along the lower Tua River, included in the Ecological Monitoring Program (2017-2020) of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected between November 2017 and December 2020 during field visits to 50 known or presumed colonies of the species within a 3-km buffer around the River Tua lower valley. The occurrence of the target taxa was documented through 245 observation events distributed among the 32 known or potential occupied colonies. In total, four taxa were identified, at genus (19) or species levels. Microtus cabrerae was the most abundant species (121 indirect observations/signs of presence), followed by Apodemus sylvaticus (19), M. lusitanicus (15), Crocidura russula (14) and Mus spretus (13). Two bird species identified by scats (Curruca undata and Turdus merula) were also included. Non-identifiable/contaminated scats (42) were assessed to the phylum, only.

Les personnes impliquées dans le projet:

Méthodes d'échantillonnage

Sampling was designed to cover all sites with potential habitats for the Cabrera vole (fallows, bushes, river habitats with herbaceous vegetation) located in a buffer of 3 km around the lower Tua valley affected by the Foz Tua dam. All areas surveyed during the previous phases of the project (EIA and Baseline Studies) that were not flooded (50) were included. These areas, were prospected for indirect signs of the Cabrera vole presence (number of tracks, faeces or latrines, and heaps of grass clippings) in November of 2017 and in spring/summer (April-May) and autumn (November-December) of 2018-2020. In each known or potential area surveyed, a detailed description of all the relevant biotopes was performed. This description included (a) the type of biotope, (b) the height of vegetation, (c) the characteristics of the landscape surrounding the demarked areas, namely in relation to the land-use and disturbance. Any changes in these parameters observed between sampling periods were recorded. This description, linked with the type of evidences found, was used to classify each area in one of five possible cases: (a) confirmed colony (active and occupied colony of M. cabrerae), (b) confirmed but unoccupied colony (absence of recent evidence in a colony previously identified by molecular tools), (c) potential colony (with evidences of possible, but not (genetically) confirmed, presence of the target species, like tracks and heaps of grass clippings), (d) potential habitat (patches with suitable habitat but without recorded evidences), and (e) no habitat (habitat patches currently without suitable conditions to the occurrence of the species – eg., agriculture or plowed terrain, flat areas without herbaceous cover, riverbeds, with no confirmed occurrences of the species). All faecal samples found in each visit to a colony were collected for subsequent genetic analysis (mitochondrial gene cytocrome-b) in a dedicated laboratory in CIBIO-InBIO (non-invasive samplings), using specific protocols to extract, sequence and analyze the resulting DNA information. This dataset only provides information about the faeces collected (and subjected to molecular analysis) along the study period, thus excluding the “subjective” evidences (tracks, heaps…). Thus, in all, only 34 of the 50 surveyed sites were really useful to assess the occurrence of the species.

Description des étapes de la méthode:

1. To be completed

Métadonnées additionnelles