New data on the spider fauna (Araneae) of Navarre, Spain: results from the 7th EDGG Field Workshop Author(s): Nina Polchaninova, Itziar García-Mijangos, Asun Berastegi, Jürgen Dengler & Idoia Biurrun Source: Arachnologische Mitteilungen, 56(1):17-23. Published By: Arachnologische Gesellschaft e.V. https://doi.org/10.30963/aramit5603 URL: http://www.bioone.org/doi/full/10.30963/aramit5603 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Arachnologische Mitteilungen / Arachnology Letters 56: 17-23 Karlsruhe, September 2018 New data on the spider fauna (Araneae) of Navarre, Spain: results from the 7th EDGG Field Workshop Nina Polchaninova, Itziar García-Mijangos, Asun Berastegi, Jürgen Dengler & Idoia Biurrun doi: 10.30963/aramit5603 Abstract. Multi-taxon investigations are of great importance in biodiversity research. We sampled spiders during the 7th EDGG Field Workshop aimed at studying dry grassland diversity in Navarre, Spain. A total of 99 spider species from 15 families were recorded from 14 localities. Of these, 47 species were new to Navarre. To date, the list of spiders of Navarre accounts for 322 species. During this first dry grassland-specific study of spiders in Spain, 78 species were recorded for the first time in this type of habitat in Navarre, and for 69 species it is a newly recorded habitat in the Iberian Peninsula. The grasslands growing in the submediterranean humid and supramediterranean upper dry territories, belonging to Festuco-Brometea and Festuco-Ononidetea phytosociological classes, were the richest in terms of inhabiting spiders (26 and 23 species respectively) while the communities of mesomediterranean semi-arid area (Lygeo-Stipetea and Salicornietea fruticosae classes) were the poorest (four species each). Keywords: dry grassland, fauna inventory, habitat distribution, Iberian Peninsula, spiders Zusammenfassung. Neue Daten zur Spinnenfauna (Araneae) von Navarra, Spanien: Ergebnisse des 7. EDGG Field Workshop. Multi-Taxon-Untersuchungen sind ein wichtiger Teil der Biodiversitätsforschung. Wir haben im Rahmen des 7th EDGG Field Workshop trockenes Grünland in der Provinz Navarra (Spanien) untersucht. Insgesamt wurden in 14 Untersuchungsflächen 99 Spinnenarten aus 15 Familien erfasst, darunter waren 47 neu für Navarra. Damit umfasst die Spinnenliste Navarras nun 322 Arten. In dieser ersten Erfas- sung von Spinnen speziell in Grünland in Spanien wurden 78 Arten in Navarra und 69 auf der Iberischen Halbinsel erstmals in diesem Habitattyp erfasst. Grünland in den submediterran feuchten und den oberen supramediterran trockenen Regionen gehört zu den pflan- zensoziologischen Klassen Festuco-Brometea und Festuco-Ononidetea und war am artenreichsten (26 bzw. 23 Spinnenarten). Dagegen waren die Klassen der mesomediterranen semi-ariden Region (Lygeo-Stipetea und Salicornietea fruticosae) die artenärmsten (jeweils vier Spinnenarten). The spider fauna of the Iberian Peninsula and of the Balearic Iberian Peninsula is still severely incompletely studied. The Islands is relatively well catalogued. Pedro Cardoso presented territory has been unevenly surveyed, there is a shortage in the a preliminary checklist of Portuguese spiders in 2000 (Car- data on species habitat distribution, and only some families doso 2000). In 2004, Eduardo Morano published a list of re- have a sufficient species list (Cardoso & Morano 2010). corded species of Iberian spiders together with a bibliography The Eurasian Dry Grassland Group EDGG (Vrahnakis of available publications on that topic (Morano 2004). This et al. 2013) organizes research expeditions (so-called Field review provided the number of species, Iberian endemics, Workshops) since 2009, aimed at sampling standardized, collecting localities and references for each administrative re- high-quality data on species composition and diversity of gion of Spain and Portugal. It also revealed the best and worst grasslands and related communities (Dengler et al. 2016). studied regions of the Iberian Peninsula, and thus outlined Data collection initially focused on plant diversity; the 7th promising areas for future investigations. Field Workshop conducted in the region of Navarre in Spain The next stage of synthesis was the creation of an elect- (Biurrun et al. 2014) was the first example to include inver- ronic catalogue of the Iberian spiders (Morano & Cardoso tebrate collection, namely spiders, in the sampling protocol. in Cardoso & Morano 2010). An accompanying paper pre- This opened the opportunity to expand information about sented an updated checklist of spiders with respect to the spiders in the study region and specify their distribution in provinces and a comparative analysis of the records, species various types of grasslands. and endemic species in each family and province (Cardoso & The Iberian spider catalogue includes 539 spider records Morano 2010). The third (and latest) version of the Iberian in the region of Navarre, which correspond to 231 species in spider catalogue provided maps of collecting localities and ex- 141 genera and 35 families; the 79 collecting localities are haustive data on the records of 1382 species in 381 genera and documented in 37 papers (Morano et al. 2014). Spider habi- 55 families (Morano et al. 2014). Conducting such a huge job, tat distribution in Navarre is known only for 13 cave species the catalogue authors concluded that the spider fauna of the (see Morano et al. 2014) and for 149 species from oak and beech-oak forests (Castro & Ferrandez 1998, Castro & Al- Nina POLCHANINOVA, Department of Zoology and Animal Ecology, V.N. Karazin Kharkiv National University, 4 Maid. Svobody, Kharkiv 61022 Ukraine; berdi 2002, Castro & Barriuso 2004, Castro 2009, Morano E-mail: [email protected] et al., 2014). Itziar GARCÍA-MIJANGOS, Department of Plant Biology and Ecology, University of the th Basque Country UPV/EHU, P.O. Box 644, Bilbao, Spain; E-mail: [email protected] The current paper presents spider records from the 7 Asun BERASTEGI, Department of Biodiversity, Gestión Ambiental de Navarra, S.A., EDGG Field Workshop, thus providing a major supplement Padre Adoain 219 Bajo, 31015 Pamplona, Spain; E-mail: [email protected] Jürgen DENGLER, Vegetation Ecology Group, Institute of Natural Resource Sciences to the list of spiders of Navarre, and reports the first data on (IUNR), Zurich University of Applied Sciences (ZHAW), Grüentalstr. 14, Postfach, 8820 spider species composition in the dry grasslands of the study Wädenswil, Switzerland; E-mail: [email protected] Plant Ecology, Bayreuth Center of Ecology and Environmental Research (BayCEER), region. University of Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany German Centre for Integrative Biodiversity Research (iDiv), Deutscher Platz 5e, 04103 Leipzig, Germany Material and methods Idoia BIURRUN, Department of Plant Biology and Ecology, University of the Basque Study area Country UPV/EHU, P.O. Box 644, Bilbao, Spain; E-mail: [email protected] Navarre is a Spanish region located in the north-central part submitted 28.3.2018, accepted 22.8.2018, online 6.12.2018 of the Iberian Peninsula, ranging from the Pyrenean Moun- 18 N. Polchaninova, I.García-Mijangos, A. Berastegi, J. Dengler & I. Biurrun Fig. 1: Collecting localities of the 7th EDGG Field Workshop in Navarre. For locality numbers, see Material and methods. tains in the northeast to the Ebro depression in the south classes (Berastegi 2013), most of them being semi-natural, i.e. (Fig. 1). Three biogeographic units are represented in Navarre: maintained by human activity. Alpine, Atlantic and Mediterranean. The climate changes Subalpine grasslands belong to the class Juncetea trifidi, from Mediterranean in the south of the study area to temper- which groups acidophilous swards of the Pyrenees. Basophi- ate in the north, with the temperate sub-Mediterranean type lous subalpine and supratemperate grasslands in the high in transitional areas. The ombrotype varies from semiarid to mountains are included in the class Elyno-Seslerietea. At subhumid in the Mediterranean Region and from humid to middle elevation, in submediterranean territories, the sam- hyperhumid in the Atlantic and Alpine Regions (Peralta et pled grasslands belong to the classes Festuco-Brometea and al. 2013). The natural vegetation is highly diverse, given the Festuco hystricis-Ononidetea striatae. The former occupies marked climatic and biogeographic gradient. Deciduous oak deep baso-neutrophilous soils and the latter, rich in dwarf and beech forests prevail in the northern areas and Mediter- scrubs, grows in shallow and stony soils. The class Lygeo ranean evergreen woodlands