[Alford, D.V. (2011). Bumblebees. Northern Bee Books.]Search in Google Scholar
[Augsburger, C., & Zettel, J. (2002). Die Bienenfauna (Hymenoptera, Apidae) im Botanischen Garten Bern (Schweiz). Naturforschende Gesellschaft in Bern, 59, 79–99.]Search in Google Scholar
[Banszak-Cibicka, W., & Żmihorski, M. (2012). Wild bees along urban gradient: winners and losers. Journal of Insect Conservation, 16, 331–343. https://doi.org/10.1007/s13592-013-0232-7]Search in Google Scholar
[Bembè, B., Gerlach, G., Schuberth, J., Schönitzer, K. (2001). Die Wildbienen im Botanisch Garten München. Nachrichtenblatt der Bayerischen Entomologen, 50, 30–41.]Search in Google Scholar
[Corbet, S.A., Williams, I.H., & Osborne, J.L. (1991). Bees and the pollination of crops and wild flowers in the European Community. Bee World, 72, 47–59. https://doi.org/10.1080/0005772x.1991.11099079]Search in Google Scholar
[Corbet, S.A., Bee, J., Dasmahapatra, K., Gale, S., Gorringe, E., La Ferla, B., Moorhouse, T., Trevail, A., Van Bergen, Y. Vorontsova, M. (2001). Native or exotic? Double or single? Evaluating plants for pollinator–friendly gardens. Annals of Botany, 87, 219–232. https://doi.org/10.1006/anbo.2000.1322]Search in Google Scholar
[Frankie, G.W., Thorp, R.W., Schindler, M., Hernandez, J., Ertter, B., Rizzardi, M. (2005). Ecological Patterns of Bees and Their Host Ornamental Flowers in Two Northern California Cities. Journal of the Kansas Entomological Society, 78, 227–246. https://doi.org/10.2317/0407.08.1]Search in Google Scholar
[Gaston, K., Smith, R., Thomson, K., Warren, P. (2005). Urban domestic gardens (II): experimental tests of methods for increasing biodiversity. Biodiversity and Conservation, 14, 395–413. https://doi.org/10.1007/s10531-004-6066-x]Search in Google Scholar
[Goulson, D., Hughes, W. H. O., Derwent, L. C., Stout, J. C. (2002). Colony growth of the bumblebee, Bombus terrestris, in improved and conventional agricultural and suburban habitats. Oecologia, 130, 267–273. https://doi.org/10.1007/s004420100803]Search in Google Scholar
[Goulson, D., Hanley, M.E., Darvill, B., Ellis, J.S., Knight, M.E. (2005). Causes of rarity in bumblebees. Biological Conservation, 122, 1–8. https://doi.org/10.1016/j.biocon.2004.06.017]Search in Google Scholar
[Goulson, D. (2010a). Bumblebees, Behavior, Ecology and Conservation. Oxford University Press.]Search in Google Scholar
[Goulson, D. (2010b). Bumblebees. In Silent Summer: The State of Wildlife in Britain and Ireland. (pp. 415–429). Cambridge University Press.10.1017/CBO9780511778230.025]Search in Google Scholar
[Hülsmann, M., Wehrden, H., Klein, A.M., Leonhardt, S.D. (2015). Plant diversity and composition compensate for negative effects of urbanization on foraging bumble bees. Apidologie, 46, 760–770. https://doi.org/10.1007/s13592-015-0366-x]Search in Google Scholar
[Jabłoński, B., & Ruszkowski, A. (2000). Rośliny pokarmowe pszczół. Kraków: Polski Klub Ekologiczny.]Search in Google Scholar
[Kowalczyk, J. K., Szczepko, K., Kurzac, T., Pawlikowski, T. (2004). Pszczoły (Hymenoptera, Apoidea) Ogrodu Botanicznego w Łodzi. In Fauna miast Europy Środkowej 21 wieku. (pp. 67–82) Bydgoszcz: Logo.]Search in Google Scholar
[Küpper, G. (1999). Wildbienen (Hymenoptera, Apidae) im Siedlungsbereich. Eine Untersuchung der Bienenfauna im Botanischen Garten der Ruhr-Universität Bochum. Natur & Heimat, 59(2), 45–52.]Search in Google Scholar
[Martins, A.C., Gonçalves, R.B., & Melo, G.A. (2013). Changes in wild bee fauna of a grassland in Brazil reveal negative effects associated with growing urbanization during the last 40 years. Zoologia (Curitiba), 30(2), 157–176. https://doi.org/10.1590/s1984-46702013000200006]Search in Google Scholar
[McFrederick, Q. S., & LeBuhn, G. (2006). Are urban parks refuges for bumble bees Bombus spp. (Hymenoptera: Apidae)?. Biological Conservation, 129(3), 372–382. https://doi.org/10.1016/j.biocon.2005.11.004]Search in Google Scholar
[Münze, R., Langner, D., & Nuß M. (2006). Die Bienenfauna des Botanischen Gartens Dresden (Hymenoptera: Apidae). Sächsische Entomologische Zeitschrift, 1, 45–69.]Search in Google Scholar
[Pawlikowski, T. (1996). Klucze do oznaczania owadów Polski cz. XXIV Błonkówki–Hymenoptera. Toruń: Oficyna Wydawnicza Turpress.]Search in Google Scholar
[Pawlikowski, T., & Pawlikowski, K. (2012). Trzmielowate Polski (Hymenoptera: Apidae: Bombini). Toruń: Wydawnictwo Naukowe Uniwersytetu Mikołaja Kopernika.]Search in Google Scholar
[Pawlikowski, T., Olszewski, P., Żyła, W., Przybylińska, M. (2016). The rare oligolectic bumblebee Bombus gerstaeckeri Morawitz, 1882 from Poland. Spixiana 39(1), 130.]Search in Google Scholar
[Peters, G. (1972). Ursachen für den Rückgang der seltenen heimishchen Hummelarten (Hym., Bombus et Psithyrus). Entomologische Berichte, 1972, 85–90.]Search in Google Scholar
[Potts, S.G., Biesmeijer, J.C., Kremen, C., Neumann, P., Schweiger, O., Kunin, W.E. (2010). Global pollinator declines: trends, impacts and drivers. Trends in Ecology and Evolution, 25(6), 345–353. https://doi.org/10.1016/j.tree.2010.01.007]Search in Google Scholar
[Rasmont, P., Franzén, M., Lecocq, T., Harpke, A., Roberts, S.P.M., Biesmeijer, J.C., .... Schweiger, O. (2015). Climatic Risk and Distribution Atlas of European Bumblebees. Biorisk, 10(Special Issue).10.3897/biorisk.10.4749]Search in Google Scholar
[Ruszkowski, A. (1969a). Rośliny pokarmowe trzmiela parkowego – Bombus hypnorum (L.) i jego znaczenie gospodarcze. Pamiętnik Puławski, 37, 321–338.]Search in Google Scholar
[Ruszkowski, A. (1969b). Rośliny pokarmowe trzmiela leśnego – Bombus pratorum (L.) i jego znaczenie gospodarcze. Pamiętnik Puławski, 37, 339–354.]Search in Google Scholar
[Ruszkowski, A. (1969c). Rośliny pokarmowe trzmiela rudego – Bombus agrorum (L.) i jego znaczenie gospodarcze. Pamiętnik Puławski, 37, 385–408.]Search in Google Scholar
[Ruszkowski, A. (1971). Rośliny pokarmowe i znaczenie gospodarcze trzmiela ziemnego – Bombus terrestris (L.) i trzmiela gajowego – B. lucorum (L.), Pamiętnik Puławski, 47, 215–250.]Search in Google Scholar
[Ruszkowski, A. (1998a). Rośliny wskaźnikowe dla trzmieli (Bombus Latr.) krótkojęzyczkowych. Pszczelnicze Zeszyty Naukowe, 1, 321–332.]Search in Google Scholar
[Ruszkowski, A. (1998b). Rośliny wskaźnikowe dla trzmieli (Bombus Latr.) długo i średnio języczkowych. Pszczelnicze Zeszyty Naukowe, 1, 333–343.]Search in Google Scholar
[Ruszkowski, A., & Biliński, M. (1970). Rośliny pokarmowe trzmiela kamiennika – Bombus lapidarius (L.) i jego znaczenie gospodarcze. Pamiętnik Puławski, 37, 43-60.]Search in Google Scholar
[Ruszkowski, A., & Żak, B. (1969). Rośliny pokarmowe i znaczenie gospodarcze trzmieli z podrodzaju Hortorobombus Vogt. Pamiętnik Puławski, 37, 359–384.]Search in Google Scholar
[Sikora, A., & Kelm, M. (2012). Flower preferences of the Wrocław Botanical Garden Bumblebees (Bombus spp.), Journal of Apicultural Science, 56(2), 27–36. https://doi.org/10.2478/v10289-012-0021-y]Search in Google Scholar
[Steven, M. (1995). Blüten- und Nahrungsangebot des Botanischen Gartens in Münster und das saisonale Auftreten von Bienen (Apoidea). Retrieved July 10, 2015, from http://www.nabu-naturschutzstation-muensterland.de/cms/upload/pdf/Diplomarbeit_Michael-Steven.pdf]Search in Google Scholar