@misc{Dubicka-Czechowska_Alicja_An_2024,
 author={Dubicka-Czechowska, Alicja and Czechowski, Paweł and Pawlikowski, Tadeusz},
 volume={67},
 number={2},
 copyright={Creative Commons Attribution BY 4.0 license},
 journal={Fragmenta Faunistica 67 (2): 120–127, 2024},
 address={Warszawa},
 howpublished={online},
 year={2024},
 publisher={Muzeum i Instytut Zoologii Polskiej Akademii Nauk},
 language={eng},
 language={eng},
 abstract={Bombus sichelii is a boreo-alpine species that has been previously regarded as extinct in Poland. The last Polish record of B. sichelii was before World War II, when it was recognized only in the Białowieża Forest. The species is characterized by a fragmented distribution in Europe, at least partially owing to specific climate preferences. During our studies of the Polish bumblebee distribution from the years 2004–2024, we have observed the species in the Suwalski Landscape Park. This region is distinguished by a cold continental climate that is referred to as the Polish Cold Pole. The nearest known populations of the species are quite distant, in northeast Russia and the Alpine Mountains. The presented field observations of B. sichelii, and the limited dispersal ability of this species, indicate that B. sichelii has been present for at least the last 20 years in northeastern Poland.},
 title={An isolated dispersion of Sichel’s bumblebee Bombus sichelii Radoszkowski, 1860 in northeast Poland},
 type={Text},
 URL={http://rcin.org.pl/miiz/Content/245353/WA058_282051_P256_FF.pdf},
 keywords={Apidae, bumblebees, occurrence changes, Poland},
}