{"key":"561cee37-5875-47b6-a661-28ca2c07b90e","installationKey":"06d75b22-fc7a-42ff-a14f-65a25cd0f3ab","publishingOrganizationKey":"61b5d63a-27f7-4834-8ea6-74012b20ec42","doi":"10.15468/enux7a","external":false,"numConstituents":0,"type":"SAMPLING_EVENT","shortName":"edia_blockD_little_bustard_points_2021","title":"EDIA – Global Bird Monitoring Program of the Alqueva Dam (EFMA) Secondary Irrigation Network, Irrigation block D: Large steppe species: Little Bustard (Tetrax tetrax) [2021]","description":"\n            The dataset contains records of Little Bustard (Tetrax tetrax) collected in the block D (irrigation blocks of Alvarrão, Brinches, Brinches-Enxoé, Caliços-Machado, Caliços-Moura, Orada-Amoreira, Pias and Serpa) and in a control zone, performed within the General Bird Monitoring Plan of the area, promoted by EDIA, S.A. A total of 215 sampling points (182 in the block area, and 33 in the control area) was surveyed during this period. The occurrence of the target taxa was documented through 38 records of individuals of the Little Bustard.\n        ","language":"eng","citation":{"text":"Almeida J, Botelho A, Rethoré G, Mirinha M, Correia R, Correia S, Carvalho T, Múrias T (2026). EDIA – Global Bird Monitoring Program of the Alqueva Dam (EFMA) Secondary Irrigation Network, Irrigation block D: Large steppe species: Little Bustard (Tetrax tetrax) [2021]. EDIA – Empresa de Desenvolvimento e Infra-estruturas do Alqueva, S.A.. 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247"],"homepage":[],"organization":"EDIA – Empresa de Desenvolvimento e Infra-estruturas do Alqueva, S.A.","address":["Rua Zeca Afonso nº 2"],"city":"Beja","country":"PT","postalCode":"Beja 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taxonomic coverage of this dataset spans 1 phylum, 1 class, 1 orders, 1 families, 1 genus and  1 species.","coverages":[{"scientificName":"Chordata","rank":{"verbatim":"phylum","interpreted":"PHYLUM"}},{"scientificName":"Aves","rank":{"verbatim":"class","interpreted":"CLASS"}},{"scientificName":"Otidiformes","rank":{"verbatim":"order","interpreted":"ORDER"}},{"scientificName":"Animalia","rank":{"verbatim":"kingdom","interpreted":"KINGDOM"}},{"scientificName":"Otididae","rank":{"verbatim":"family","interpreted":"FAMILY"}}]}],"geographicCoverages":[{"description":"The data were collected in the area covered by the Secondary Irrigation Network of the Alqueva Dam project, block D (irrigation blocks of Alvarrão, Brinches, Brinches-Enxoé, Caliços-Machado, Caliços-Moura, Orada-Amoreira, Pias and Serpa) covering in total 45084 ha, in the municipalities of Moura, Beja and Serpa, and in a nearby control area, covering 9205 ha in the municipalities of Castro Verde and Beja (all in the district of Beja).","boundingBox":{"minLatitude":37.75393,"maxLatitude":38.16044,"minLongitude":-7.9876,"maxLongitude":-7.37894,"globalCoverage":false}}],"temporalCoverages":[{"@type":"range","start":"2021-04-07T00:00:00.000+00:00","end":"2021-05-29T00:00:00.000+00:00"}],"keywordCollections":[{"thesaurus":"GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml","keywords":["2021","large steppe birds; Little Bustard","Aqueva dam; irrigation block; block D; monitoring plan; sampling points; impact; spring"]}],"project":{"title":"EDIA – Global Bird Monitoring Program of the Alqueva Dam (EFMA) Secondary Irrigation Network, Irrigation block D: Large steppe species: Little Bustard (Tetrax tetrax) [2021]","identifier":"EDIA Biodiversity Data ","contacts":[{"type":"AUTHOR","primary":false,"userId":[],"firstName":"João","lastName":"Almeida","position":[],"email":[],"phone":[],"homepage":[],"address":[]},{"type":"ADMINISTRATIVE_POINT_OF_CONTACT","primary":false,"userId":[],"firstName":"Ana","lastName":"Botelho","position":[],"email":[],"phone":[],"homepage":[],"address":[]},{"type":"AUTHOR","primary":false,"userId":[],"firstName":"Guillaume","lastName":"Rethoré","position":[],"email":[],"phone":[],"homepage":[],"address":[]},{"type":"AUTHOR","primary":false,"userId":[],"firstName":"Marco","lastName":"Mirinha","position":[],"email":[],"phone":[],"homepage":[],"address":[]},{"type":"AUTHOR","primary":false,"userId":[],"firstName":"Ricardo","lastName":"Correia","position":[],"email":[],"phone":[],"homepage":[],"address":[]},{"type":"AUTHOR","primary":false,"userId":[],"firstName":"Sérgio","lastName":"Correia","position":[],"email":[],"phone":[],"homepage":[],"address":[]},{"type":"AUTHOR","primary":false,"userId":[],"firstName":"Tiago","lastName":"Carvalho","position":[],"email":[],"phone":[],"homepage":[],"address":[]},{"type":"METADATA_AUTHOR","primary":false,"userId":[],"firstName":"Tiago","lastName":"Múrias","position":[],"email":[],"phone":[],"homepage":[],"address":[]}],"funding":"The work was funded by EDIA, S.A.","awards":[],"studyAreaDescription":"The study was conducted in area affected by the Irrigation block D (all sub-blocks), as well as in a control area outside these limits, covering a total area of 45084 ha and 9205 ha, respectively.","designDescription":"The objective of the study was to determine the general patterns of occurrence of the target  species and their abundance during the breeding season in the study area, based on the number of singing males.","relatedProjects":[],"abstract":"The dataset contains records of Little Bustard (Tetrax tetrax) collected in the block D (irrigation blocks of Alvarrão, Brinches, Brinches-Enxoé, Caliços-Machado, Caliços-Moura, Orada-Amoreira, Pias and Serpa) and in a control zone, performed within the General Bird Monitoring Plan of the area, promoted by EDIA, S.A. A total of 215 sampling points (182 in the block area, and 33 in the control area) was surveyed during this period. The occurrence of the target taxa was documented through 38 records of individuals of the Little Bustard."},"samplingDescription":{"studyExtent":"The data were collected in the area covered by the Secondary Irrigation Network of the Alqueva Dam project block D (irrigation blocks of Alvarrão, Brinches, Brinches-Enxoé, Caliços-Machado, Caliços-Moura, Orada-Amoreira, Pias and Serpa) covering a total area of 45084 ha, and in a control area with 9205 ha, respectively.","sampling":"Each sampling point was surveyed 1-2 times a year in April and May, in the first or last hours of the day (that is, around the sunrise or the sunset). The approach to the sampling points were made by car, at a low and constant speed, stopping the vehicle approximately one or two minutes before the start of the count (so that the birds can get used to the presence of the vehicle and resume their normal behavior). The count was then performed for a period of five minutes. All counts were made in good or acceptable weather conditions (ie, in the absence of heavy rain, wind and fog). \n\nAll detections of the species were noted in a field form specifically made for this purpose. These forms included (a) the location (with geographic coordinates), time and number of individual males Additionally, the following metadata were included: (a) day of the visit, (b) start and ending time of the observation (c) observer identification and  (d) weather conditions in qualitative scales (cloud cover, temperature wind and rainfall). \n\nThe habitat for each sampling point was characterized in a 250 m radius around the focal point, by dividing this circle in eight quadrants (or octants) and calculating the percentage estimate of the coverage for each of the following classes: (a) fallow land < 10 cm; (b) fallow 10 cm < 30 cm, (c) fallow > 30 cm, (d) crops, (e) fallow/plowed land, (f) sunflower, (g) stubble and (I) open “montado”. In this dataset only the predominant habitat in the quadrant corresponding to the effective observations is presented in the column “habitat”. For each obnervation, a separate record was made for birds seen inside and outside the 250 radius circle. This information is presented in the “organismRemarks” column. The identity of each sub-block is indicated by the respective name in each sampling point: ALV: Alvarrão, BRE: Brinches-Enchoé, BRI: Brinches, CMA: Caliços-Machado, CMO: Caliços-Moura, ORA: Orada-Amoreiras, PIAS: Pias and SER: Serpa) and in “control” (“Controloxxx”, in the “locationID” column) zones.","qualityControl":"All identifications were performed by qualified technicians","methodSteps":["To be completed"]},"countryCoverage":[],"collections":[],"dataDescriptions":[],"dataLanguage":"eng","purpose":"<p>This dataset is part of a broader initiative whereby the company EDIA, S.A. will make available all biodiversity data collected during impact assessment and biological monitoring studies.</p>","pubDate":"2026-05-11T00:00:00.000+00:00","maintenanceUpdateFrequency":"AS_NEEDED","maintenanceDescription":"This resource will be regularly checked for accuracy.","license":"http://creativecommons.org/licenses/by/4.0/legalcode","dwca":{"coreType":"http://rs.tdwg.org/dwc/terms/Event","extensions":["http://rs.tdwg.org/dwc/terms/Occurrence"],"modified":"2026-07-12T05:54:01.386+00:00"},"approximateCounts":{"occurrenceCount":392}}