EDP Foz-Tua: Small Mammals - Complementary Studies [2010] & Monitoring Ecological Program [2011]

Description

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 296 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

Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.

Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Cabral J A, Barros P, Vale-Gonçalves H M, Bastos R, Santos R, Múrias, T (2019): EDP Foz-Tua: Small Mammals - Complementary Studies [2010] & Monitoring Ecological Program [2011]. v1. EDP - Energias de Portugal. Dataset/Samplingevent. http://ipt.gbif.pt/ipt/resource?r=tua_small_mammals_ec43&v=1.0

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est EDP - Energias de Portugal. 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 : 1134ee3f-56a1-4c58-b1ff-d2a8ddb2cbc1.  EDP - Energias de Portugal publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du GBIF Portugal.

Mots-clé

Small mammals; occurrence; observations; captures; Sherman traps; Rodentia; Eulipotyphla

Contacts

Couverture géographique

The data were collected within a 5-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, Alijó, Murça, Vila Flor and Mirandela.

Couverture taxonomique

The taxonomic coverage of this dataset spans 1 phylum, 1 class, 2 orders, 7 families, 8 genera and 10 species.

Couverture temporelle

Données sur le projet

The dataset contains records of small mammals (Rodentia and Eulipotyphla) collected in plots along the lower Tua River valley and in Ferradosa stream (Douro sub-basin), included in the Complementary Studies of the Environmental Impact Assessment (2010) and in the Ecological Monitoring Program (2011) of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected between February and December 2010 (Complementary Studies) and October 2011 (Ecological Monitoring Program), during field visits carried out, respectively, in 29 and 18 sampling points with favourable habitats for small mammals (fallows, cork oak woodlands, bushes, riverine, abandoned orchards, reed beds, juniper woodlands, chestnut woodlands), within a 5-km buffer around the lower Tua River valley. The occurrence of the target taxa was documented through 319 observation/capture events in 47 sampling points. In total, 12 taxa were identified, of which 10 to the species rank and two to the genus rank. The most abundant species were Mus spretus (126 observation/capture events), Apodemus sylvaticus (94), and Crocidura russula (22).

Les personnes impliquées dans le projet:

Méthodes d'échantillonnage

Sampling was designed to cover the main habitat types for small mammals (fallows, cork-oak woodlands, bushes, riverine, abandoned orchards, reedbeds, juniper woodlands, chestnut woodlands) in and around the lower Tua valley affected by the Foz-Tua dam and in the Ferradosa stream (Douro sub-basin). Each sampling plot was visited once during three consecutive days between February-March and October-December 2010 (Complementary Studies) or October 2011 (Ecological Monitoring Program). In January-February of 2010 a total of 29 sampling points were established in the framework of the Complementary Studies of the Foz-Tua dam to provide a preliminary assessment of the small mammal fauna in the area. These plots served as a baseline for the sampling grid of the Ecological Monitoring Program of this group, which was tested in October-November 2010, with 19 points (of which 14 were effectively used) set in a 2x2 km UTM grid (one plot per square) centered in the lower Tua River valley in the area affected by the dam. Based on the results of this experience, a final grid of 19 sampling plots (of which 17 were effectively used) was established in each 2x2 km square (and in three additional points located in the Ferradosa stream), in October 2011. Each plot was selected in function of its habitat suitability for small mammals, and a preliminary inspection looking for signs of the presence of small mammals (tracks, feces, latrines) was performed. When this inspection was positive, the information was recorded and the plot was earmarked for a capture session. Each capture session consisted in the installation of lines of 25 “Sherman” traps distributed every 2-5 m in open areas and 15 m in closed habitats (e.g., bushes and woodlands), covering the maximum number of suitable habitats in the sampling plot. Traps remained set for three days and three consecutive nights and during their activation period they were baited with apple, carrot and commercial cat food (for Soricidae) and were covered with vegetation carded cotton, to provide food and thermal comfort for captured individuals, respectively. Each trap was controlled at least twice a day (one in the morning and another in the late afternoon). All the captured specimens were administered with light volatile ethyl ether anesthesia, to ensure a correct and safe manipulation procedure. Each specimen was individually assigned a temporary marking (haircut), aiming to recognize the animal in the event of a recapture situation, aged and sexed (with the exception of shrews when non-lactating), measured and subsequently released. The following biometric parameters were taken: body length, tail length, hind leg length, ear length and weight. All identifications were made with appropriate keys (Gonçalves, 2006) and field guides (Blanco, 1998). The captures were carried out under the License No 378/2010 / CAPT, issued on October 26 2010, by the Institute of Nature and Forests Conservation (ICNF) to the senior field technician.

Description des étapes de la méthode:

1. To be completed

Citations bibliographiques

1. Gonçalves, H. (2006). Inventariação e caracterização dos micromamíferos no Parque Natural do Alvão. Relatório final de estágio da Licenciatura em Ecologia Aplicada. Universidade de Trás-os-Montes e Alto Douro, Vila Real. 104p.
2. Blanco, J. 1998. Mamíferos de España. Insectívoros, Quirópteros, Primates y Carnívoros de la Península Ibérica, Baleares y Canarias. Vol. I. Editorial Planeta. Barcelona

Métadonnées additionnelles