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Completeness of citizen science biodiversity data from a volunteered geographic information perspective / Clemens Jacobs in Geo-spatial Information Science, vol 20 n° 1 (March 2017)  

Public [article]  inGeo-spatial Information Science > vol 20 n° 1 (March 2017) Titre : Completeness of citizen science biodiversity data from a volunteered geographic information perspective Type de document : Article/Communication Auteurs : Clemens Jacobs, Auteur ; Alexander Zipf, Auteur Année de publication : 2017 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] Aves [Termes IGN] données écologiques [Termes IGN] données localisées des bénévoles [Termes IGN] Etats-Unis [Termes IGN] exhaustivité des données [Termes IGN] OpenStreetMap [Termes IGN] parc naturel national [Termes IGN] qualité des données Résumé : (auteur) Observations of living organisms by citizen scientists that are reported to online portals are a valuable source of information. They are also a special kind of volunteered geographic information (VGI). VGI data have issues of completeness, which arise from biases caused by the opportunistic nature of the data collection process. We examined the completeness of bird species represented in citizen science observation data from eBird and iNaturalist in US National Parks (NPs). We used approaches for completeness estimation which were developed for data from OpenStreetMap, a crowdsourced map of the world. First, we used an extrinsic approach, comparing species lists from citizen science data with National Park Service lists. Second, we examined two intrinsic approaches using total observation numbers in NPs and the development of the number of new species being added to the data-set over time. Results from the extrinsic approach provided appropriate completeness estimations to evaluate the intrinsic approaches. We found that total observation numbers are a good estimator of species completeness of citizen science data from US NPs. There is also a close relationship between species completeness and the ratio of new species added to observation data vs. observation numbers in a given year. Numéro de notice : A2017-186 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/10095020.2017.1288424 En ligne : http://dx.doi.org/10.1080/10095020.2017.1288424 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84771 [article]