National census of the Iberian wolf (2002-2003) - Presence type
Citation
Pimenta V, Barroso I, Álvares F, Correia J, Ferrão da Costa G, Moreira L, Nascimento J, Petrucci-Fonseca F, Roque S, Santos E, Tomás D (2021). National census of the Iberian wolf (2002-2003) - Presence type. ICNF - Instituto da Conservação da Natureza e das Florestas. Occurrence dataset https://doi.org/10.15468/ywmq6u accessed via GBIF.org on 2024-08-31.Description
The wolf subspecies present in Iberian Peninsula, Canis lupus signatus (Cabrera 1907), has in Portugal the status of Endangered (Red Book of the Vertebrates of Portugal), being covered by specific national legislation (Law no. 90/88, of 13th of December August and Decree-Law No. 54/2016, of 25 August), which grants it the Status of Protected Species. This study intents to update the existing knowledge about the situation of the wolf and gather information to support the management of the species and the environment in which it is located in Portugal. the National Census of Wolf 2002/2003 developed by a partnership established between ICN and Grupo Lobo, whose objectives were: - update the distribution map of this species in Portugal; - estimate the number and distribution of existing family groups; - analyze the evolution of the population in relation to the results obtained in the work carried out under the LIFE Program between 1994 and 1996. After compiling the existing information about the species presence, field prospecting work was carried out, which consisted, above all, in conducting routes in search of evidence of the presence of the species, as well as listening and waiting stations. The presence of the species was detected in about 20,000 km2, of which in only about 16,000 km2 the species is estimated to occur regularly (distribution area). The sampling unit used was the decachylomeric square of the Universal Transverse Mercator reticulum (UTM 10x10 km), since the lobe presents movements and vital areas of this order of magnitude, and for this reason this mesh is referred to in several works as the most appropriate to study this species.Sampling Description
Study Extent
The data was collected in a 29000 Km² area, containg parts of Braga, Viana do Castelo, Porto, Vila Real, Bragança, Aveiro, Viseu, Guarda, Castelo Branco e Portalegre municipalities, from May to October of 2002 and 2003, having been punctually carried out, in both years, transects in search of evidence of the presence of the species outside this periodSampling
The sampling unit used in this work was the UTM 10x10. The presence of wolves was detected through four different ways: Paths on foot or by car in search of signs of the species' presence (droppings, tracks, scratches); Sound stations - Wolf howl simulation looking for return howl from the packs Waiting stations - Detection by direct observation Gathering information from local populationsQuality Control
All initial data was inserted in a specific relational database built specifically for the project, which implemented several quality control methods. In the preparation of the dataset for GBIF publication, data consistency was verified using cluster algorithms using OpenRefine.Method steps
- For each UTM 10x10 the presence was Confirmed, Probable or Non Detected.
- The following steps were performed in data layer: - Convertion of the .shp from EPSG:3763 (ETRS89) to EPGS:4326 (WGS84) - Extraction of the wkt geometry from the layer - Centroids calculation the for each polygon - Calculation of the coordinate accuracy through the longest distance from the centroid to the borders of the polygon. - Calculation the centroids coordinate - Cross-reference of the centroids with CAOP2020 layer - export to csv and reinterpret attributes matching to DwC standard terms. In the DwC archive: occurrenceRemarks - information about wolf presence. occurrenceStatus - information about wolf pack presence. dynamicProperties - information about wolves found dead georeferenceRemarks- The grid number (gid) verbatimCoordinates - UTM coordinates
Taxonomic Coverages
The work studies only one species, Canis lupus signatus (Cabrera, 1907).
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Animaliarank: kingdom
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Chordatarank: phylum
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Mammaliarank: class
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Carnivorarank: order
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Canidaerank: family
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Canisrank: genus
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Canis lupusrank: species
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Canis lupus signatusrank: subspecies
Geographic Coverages
Portugal mainland, specifically in the municipalities of Braga, Viana
do Castelo, Porto, Vila Real, Bragança, Aveiro, Viseu, Guarda, Castelo Branco and Portalegre.
Bibliographic Citations
- Pimenta V., Barroso I., Álvares F., Correia J., Ferrão da Costa G., Moreira L., Nascimento J., Petrucci-Fonseca F., Roque S., Santos E. (2005). Situação Populacional di Lobo em Portugal: resultados do Censo Nacional 2002/2003.Relatório Técnico Instituto da Conservação da Natureza / Grupo Lobo. Lisboa, 158 pp+Anexos - ISBN-10:972-775-159-8
Contacts
Virgínia Pimentaoriginator
position: Divisão de Espécies Protegidas da Direcção de Serviços de Conservação da Natureza
ICNF
PT
Inês Barroso
originator
Grupo Lobo
Francisco Álvares
originator
Grupo Lobo/ICNF
João Correia
originator
ICNF
Gonçalo Ferrão da Costa
originator
ICNF / Grupo Lobo
Luis Moreira
originator
ICNF
José Nascimento
originator
ICNF
Francisco Petrucci-Fonseca
originator
Grupo Lobo
Sara Roque
originator
Grupo Lobo
Eduardo Santos
originator
Grupo Lobo
Diana Tomás
metadata author
Instituto Superior de Agronomia
PT
email: dianarstomas@gmail.com
Teresa Pimenta
administrative point of contact
position: Information System Senior Officer
ICNF
1050-191
PT
Telephone: +351213507900
email: sig@icnf.pt
Mário Reis
administrative point of contact
position: Conservation and Monitoring Senior Officer
ICNF
PT