Iberian Odonata distribution: data of the BOS Arthropod Collection (Univ. Oviedo, Spain)
Odonata specimens kept in the Arthropod Collection BOS of University of Oviedo (subcollection code BOS-Odo), provides a good geographical and taxonomic representation of Odonata in the Iberian Peninsula (98.63% of records), the northern half being specially well-represented, and BOS is the largest dragonfly collection from this area. On-line database includes records of 16604 specimens (off-line database with all determinations comprises 17846 items). Iberian Odonata records available through GBIF from other datasets total only 2700 records, whereas dragonfly records from Spain (1784-2009) are estimated in about 12000 records. These facts highlight the importance of this dataset.
Regarding taxonomic coverage of BOS Arthropod Collection, Coenagrionidae and Calopterygidae, --with ~ 21% of the Odonata specimens each one-- are the most abundant families, followed by Libellulidae and Gomphidae. The BOS Arthropod Collection contains specimens of 71 Odonata species out of the 79 known from the Iberian Peninsula (90%), including the holotypes and some paratypes of the Iberian subspecies Calopteryx haemorrhoidalis asturica Ocharan, 1983 and Sympetrum vulgatum ibericum Ocharan, 1985. All specimens have been reviewed for taxonomic identification and names updated. Specimens in dataset expand from 1950 to present, being the 1980’ and 2000’ the best-represented decades. Dataset is also provided in DarwinCore Archive format.
Most of the specimens (98.63% of total data) from the Iberian Peninsula (mainly Spain, but also records of Portugal) (Fig. 2). North of Peninsula is better covered: Asturias (~ 4100 specimens) and Huesca (~3400) are the provinces with more exemplars, followed by Navarra, Teruel, Zaragoza, León, Álava and Vizcaya (between 1700-500 records). Data of other 32 Spanish provinces and 2 old Portuguese continental provinces (3 districts) are available in the database.
Other countries appear in the collection with few specimens: Morocco and Austria, the following countries by specimens, have 40 registers each one.
This dataset has been created with the aim to make available the biodiversity data of the odonates deposited in the Arthropod Collection BOS (subcollection of Odonada: BOS-Odo). Iberian Odonata records (and available databases) and dragonfly records/ databases are scanty when compared with other European countries, being the difference of several orders of magnitude [for comparable areas]. Iberian Odonata records hosted by GBIF (excluding this dataset) only reach 2700 items http://data.gbif.org, accessed 2013/04/04), whereas dragonfly records from Spain (1784-2009) are estimated in about 12000 records (authors unpublished data). Dragonfly biodiversity known is broader in other European countries, and databases available greatly exceed these numbers: British Odonata database comprises 500,000 records (Parr 2010), Dutch database more than 307,000 (Termaat et al. 2010), North Rhine-Westphalia 150,000 (Conce et al. 2010) or Flandes 55,000 (De Knijf & Anselin, 2010). In this framework, the BOS-Odo dataset is a significant contribution of primary data available for ecological, faunistic and conservation purposes, especially considering their geographical and temporal distribution.
Identifications of all specimens have been revised (or identified by first time when no determination label was available in the material) by A. Torralba-Burrial between 2010-2012 using suitable literature (adults: Askew 2004, Dijkstra & Lewington 2006; larvae and exuviae: Askew 2004, Doucet 2010).
Scientific names on labels were checked with a taxonomic thesaurus. Specimens data labels were checked against related PhD dissertations and publications when available. Georeferences shown in published sources were assumed as true when no coordinates were included on specimens’ labels, previously comparing published coordinates with localities location.
Unique collections accession numbers were assigned to each specimen. Other validation procedures included geographic coordinates format, coordinates within countries boundaries, coherence between collection and identification dates and absence of ASCII anomalous characters in the dataset were checked with DARWIN_TEST v1.3 software http://www.gbif.es/darwin_test/Darwin_test.php).
Previously to digitalization, odonates present in BOS Arthropod Collection were examined and their preserved status revised: specimens were pinned, labelled and frozen to deparasitation when necessary. After preparation, half (48%) of specimens hosted in the collection are adults pinned, 22% preserved in 70º ethanol, 18% exuviae dried and 11% dry specimens in transparent envelopes, all of them stored in metal cabinets in a cold chamber to 6 ºC. Dried specimens pinned before 2000 were in entomological boxes with naphthalene as insecticide, later replaced by paradichlorobenzene, which affect all dry specimens. All data available in the specimens' labels were included in a database using ZOORBAR software http://www.gbif.es/zoorbar/zoorbar.php) that exports data in Darwincore v1.2 format. A taxonomic thesaurus was developed, that includes all synonyms used in Iberian Odonata publications and spelling variants of scientific names. This thesaurus allows collect and archive names as appear on the specimens’ labels, in a virtually error-free fashion.
Retrospective georeferencing of specimens was carried out using digital cartography (GOOGLE EARTH, IBERPIX http://www2.ign.es/iberpix/visoriberpix/visorign.html). All coordinates were captured in MGRS format in the off-line database, but transform to geographic coordinates (in decimal degrees) for the online publication. Coordinates of threatened species protected by law (e.g. Macromia splendens (Pictet, 1843), Oxygastra curtisii (Dale, 1834), Gomphus graslinii Rambur, 1842, Coenagrion mercuriale (Charpentier, 1840)) have been generalised to 0.01º in the on-line database.
Dataset was transformed in a DarwinCore Archive format and uploaded to the Integrated Publishing Toolkit (IPT v2.0.4 http://www.gbif.org/informatics/infrastructure/publishing) of the Spanish node of the Global Biodiversity Information Facility (GBIF). Offline version of the dataset includes identification history of each specimens (17846 items), habitats where were collected and notes on materials derived from specimens (e.g., microscopic preparations, morphometric data, publications…). Those details are available on request.
Type of content
Includes: point occurrence data.
Torralba-Burrial, A. & F.J. Ocharan. (2013). Iberian Odonata distribution: data of the BOS Arthropod Collection (Univ. Oviedo, Spain). Database accesed on [data]
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Metadata last updated on 2018-11-30 12:33:01.0