Long-term changes in the species composition and distribution of Bombini (Apidae) in Cracow since the mid 1850s

Abstract

Abstract. Current distribution of bumblebee species in Cracow was studied in [2000][2001][2002][2003] in 23 atlas squares. The results were compared with historical data available for last 150 years, including published materials and museum collections. A total 28 bumblebee species were recorded throughout that period. Among them, 11 species are currently threatened in the study area. There were stated three tendencies among the studied bumblebee species. After 1850, 10 species were strongly regressing (withdrew from the Cracow area altogether or range contraction); further 11 species were more or less stable in their area; the next 6 species were strongly expanding in Cracow. 6 species were stated as a new for Cracow, including 2 species recorded between 1901-1972 and 4 between 1973-2003. Negative population tendencies by the Bombini in the Cracow area were the result of both natural and anthropogenic factors. Species protection and conservation of the most valuable areas as nature reserves are expected to prevent further decrease of bumblebees in the Cracow area.Résumé. Changements à long terme de la composition spécifi que et de la distribution des Bombini (Apidae) de Cracovie depuis 1850. La distribution actuelle des espèces de bourdons de Cracovie a été étudiée en 2000-2003, dans 23 carrés cartographiques. Les résultats on tété comparés avec les données historiques des dernières 150 années, y compris les données publiées et celles des collections de musées. Au total, 28 espèces de bourdons ont été observées durant l'ensemble de la période. Parmi ces espèces, onze sont menacées dans l'aire d'étude. On a établi trois tendances parmi les espèces de bourdons. Après 1850, 10 espèces ont fortement régressé (éteintes de Cracovie tandis que leur aire se contractait), 11 autres espèces ont été plus ou moins stables dans leur distribution ; 6 espèces se sont fortement étendues dans la région. 6 espèces ont été nouvellement observées : 2 nouvelles espèces durant la période 1901-1972 et 4 durant la période 1973-2003. Les tendances négatives des Bombini de Cracovie ont été le résultat à la fois de facteurs naturels et anthropiques. On espère que les mesures de protection d'espèces et les mises en réserves naturelles des zones les plus intéressantes arrêtent le déclin des bourdons de la région de Cracovie.

Drastic shifts in the Belgian bumblebee community over the last century

“…However, as in other studies (e.g. Kosior et al 2008), we showed that some species do not follow the same trends than their hosts. Bombus barbutellus and B. rupestris have a decreasing area whereas their host species, B. hortorum and B. lapidarius, remain among the most abundant and widespread bumblebee species at the national scale (Table 2).…”

The effect of climatic variation on abundance and diversity of bumblebees: a ten years survey in a mountain hotspot

“…Unlike Oertli et al (2005) in Wallis (Switzerland) and Kosior et al (2008) in Krakow (Poland), we observed a quite constant diversity in Eyne year after year, with 8 to 10 registered species in a 30 specimens sampling (rarefaction Hurlbert index).…”

Dispersion of Bumblebee Bombus Semenoviellus Skorikov (Hymenoptera, Apidae) in Poland

“…Despite all scenarios showing that the area of this species' occurrence is decreasing due to global warming (Rasmont et al, 2015), B. semenoviellus has been confirmed to be increasing its range in Finland in the 1960s (Elfving, 1965), in Lithuania (Monsevičius, 1993) and in Poland in the 1980s (Pawlikowski, 2008). Currently, it is probably dispersed throughout the whole country but is rarely found Banaszak et al, 2006;Kosior et al, 2008;Pawlikowski, 2008;Banaszak, 2009;Pawlikowski & Pawlikowski, 2012). Its presence has also been confirmed in Germany (Smissen & Rasmont, 2000), Czech Republic (Přidal & Tkalců, 2003), Austria (Streinzer, 2010) and Slovakia (Šima & Smetana, 2012).…”