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Journal of Insect Conservation

, Volume 23, Issue 5–6, pp 787–801 | Cite as

A systematic review of the nesting and overwintering habitat of bumble bees globally

  • Amanda R. LicznerEmail author
  • Sheila R. Colla
REVIEW PAPER

Abstract

Some bumble bee species are in decline globally. Declines have been attributed to many factors including habitat loss. Habitat is an integral component of any species and should be a central focus of conservation efforts to protect at risk species. However, the habitat of bumble bee species is not fully understood. We conducted a systematic review of the peer-reviewed literature using Web of Science to summarize articles that have described the habitat of bumble bee species. In total, 55 nesting and 10 overwintering habitat studies are described in this review. We described common patterns associated with bumble bee studies including overwintering habitat, landscape type, and ground position. We found that bumble bee nests are more frequently found underground and that studies were biased towards the United Kingdom and agricultural habitats. There are some preferences in nesting and overwintering habitat, but further research is needed to draw any substantial conclusions. Detection of nesting and overwintering site studies may be improved using citizen science initiatives and possibly through employing detection dogs or radio-telemetry. Increasing the detection of nesting and overwintering sites is an important priority to improve our understanding of bumble bee habitat. It is critical that we identify all aspects of bumble bee habitat to ensure the protection, restoration and creation of important resources to ensure their conservation.

Keywords

Bombus Bumble bee habitat Bumble bee nesting Nest detection methods Nesting resources Overwintering habitat 

Notes

Acknowledgements

We would like to thank the Natural Sciences and Engineering Research Council of Canada (NSERC) Postgraduate Scholarships for providing the salary for ARL.

Compliance with ethical standards

Conflicts of interest

None to report.

Research involving human participants or animals

This research did not involve human participants or animals.

References

  1. Alford DV (1969) A study of hibernation of bumblebees (Hymenoptera-Bombidae) in southern England. J Anim Ecol 38:149–170.  https://doi.org/10.2307/2743 CrossRefGoogle Scholar
  2. Arbetman MP, Gleiser G, Morales CL, Williams P, Aizen MA (2017) Global decline of bumblebees is phylogenetically structured and inversely related to species range size and pathogen incidence. Proc R Soc B Biol Sci 284:20170204CrossRefGoogle Scholar
  3. Barron MC, Wratten SD, Donovan BJ (2000) A four-year investigation into the efficacy of domiciles for enhancement of bumble bee populations. Agric For Entomol 2:141–146.  https://doi.org/10.1046/j.1461-9563.2000.00059.x CrossRefGoogle Scholar
  4. Bishop JA, Armbruster WS (1999) Thermoregulatory abilities of Alaskan bees: effects of size, phylogeny and ecology. Funct Ecol 13:711–724.  https://doi.org/10.1046/j.1365-2435.1999.00351.x CrossRefGoogle Scholar
  5. Bols JH (1937) Observations on Bombus and Psithyrus, especially on their hibernation. Proc R Entomol Soc Lon Ser A 12:47–50.  https://doi.org/10.1111/j.1365-3032.1937.tb00942.x CrossRefGoogle Scholar
  6. Bowers MA (1985) Bumble bee colonization, extinction, and reproduction in subalpine meadows in northeastern Utah. Ecology 66:914–927.  https://doi.org/10.2307/1940554 CrossRefGoogle Scholar
  7. Brown MJF, Paxton RJ (2009) The conservation of bees: a global perspective. Apidologie 40:410–416.  https://doi.org/10.1051/apido/2009019 CrossRefGoogle Scholar
  8. Cameron SA, Whitfield JB, Cohen M, Thorp N (1999) Novel use of walking trails by the Amazonian bumble bee, Bombus transversalis (Hymenoptera: Apidae). Entomol Contrib Mem Byron A 24:187–193Google Scholar
  9. Carreck N, Beasley T, Keynes R (2009) Charles Darwin, cats, mice, bumble bees and clover. Bee Cr. 91:4–6Google Scholar
  10. Carvell C (2002) Habitat use and conservation of bumblebees (Bombus spp.) under different grassland management regimes. Biol Conserv 103:33–49.  https://doi.org/10.1016/S0006-3207(01)00114-8 CrossRefGoogle Scholar
  11. Carvell C, Meek WR, Pywell RF, Goulson D, Nowakowski M (2007) Comparing the efficacy of agri-environment schemes to enhance bumble bee abundance and diversity on arable field margins. J Appl Ecol 44:29–40.  https://doi.org/10.1111/j.1365-2664.2006.01249.x CrossRefGoogle Scholar
  12. Carvell C, Bourke AFG, Dreier S, Freeman SN, Hulmes S, Jordan WC, Redhead JW, Sumner S, Wang J, Heard MS (2017) Bumblebee family lineage survival is enhanced in high-quality landscapes. Nature 543:547–549CrossRefGoogle Scholar
  13. Charman TG, Sears J, Green RE, Bourke AFG (2010) Conservation genetics, foraging distance and nest density of the scarce Great Yellow Bumblebee (Bombus distinguendus). Mol Ecol 19:2661–2674.  https://doi.org/10.1111/j.1365-294X.2010.04697.x CrossRefPubMedGoogle Scholar
  14. Chavarria G (1996) Notes on a combined nest of Bombus pullatus (Hymenoptera: Apidae) and Acromyrmex octospinosus (Hymenoptera: Formicidae). J Kans Entomol Soc 69:403–405Google Scholar
  15. Colla SR (2016) Status, threats and conservation recommendations for wild bumble bees (Bombus spp.) in Ontario, Canada: a review for policymakers and practitioners. Nat Areas J 36:412–426CrossRefGoogle Scholar
  16. Colla SR, Otterstatter MC, Gegear RJ, Thomson JD (2006) Plight of the bumble bee: pathogen spillover from commercial to wild populations. Biol Conserv 129:461–467.  https://doi.org/10.1016/j.biocon.2005.11-.013 CrossRefGoogle Scholar
  17. Darvill B, Knight ME, Goulson D (2004) Use of genetic markers to quantify bumblebee foraging range and nest density. Oikos 107:471–478.  https://doi.org/10.1111/j.0030-1299.2004.13510.x CrossRefGoogle Scholar
  18. De Meulemeester T, Aytekin AM, Cameron S, Rasmont P (2011) Nest architecture and species status of the bumble bee Bombus (Mendacibombus) shaposhnikovi (Hymenoptera: Apidae: Bombini). Apidologie 42:301–306.  https://doi.org/10.1007/s13592-011-0022-z CrossRefGoogle Scholar
  19. de Oliveira MO, Cavalcante MC, Freitas BM (2015) Nesting behavior and colony description of the neotropical Bombus (Thoracobombus) brevivillus in northeastern Brazil. J Insect Behav 28:297–302.  https://doi.org/10.1007/s10905-015-9502-8 CrossRefGoogle Scholar
  20. Dicks LV, Baude M, Roberts SPM, Phillips J, Green M, Carvell C (2015) How much flower-rich habitat is enough for wild pollinators? Answering a key policy question with incomplete knowledge. Ecol Entomol 40:22–35.  https://doi.org/10.1111/een.12226 CrossRefPubMedPubMedCentralGoogle Scholar
  21. Dramstad WE (1996) Do bumblebees (Hymenoptera: Apidae) really forage close to their nests? J Insect Behav 9:163–182.  https://doi.org/10.1007/BF02213863 CrossRefGoogle Scholar
  22. Eidesen PB, Little L, Mueller E, Dickinson KJM, Lord JM (2017) Plant-pollinator interactions affect colonization efficiency: abundance of blue-purple flowers is correlated with species richness of bumblebees in the Arctic. Biol J Linn Soc 121:150–162.  https://doi.org/10.1093/biolinnean/blw006 CrossRefGoogle Scholar
  23. Fussell M, Corbet SA (1992) The nesting places of some British bumble bees. J Apic Res 31:32–41.  https://doi.org/10.1080/00218839.1992.11101258 CrossRefGoogle Scholar
  24. Gamboa GJ, Foster RL, Richards KW (1987) Intraspecific nest and brood recognition by queens of the bumble beee, Bombus-occidentalis (Hymenoptera, Apidae). Can J Zool 65:2893–2897.  https://doi.org/10.1139/z87-439 CrossRefGoogle Scholar
  25. Geib JC, Strange JP, Galen C (2015) Bumble bee nest abundance, foraging distance, and host-plant reproduction: implications for management and conservation. Ecol Appl 25:768–778.  https://doi.org/10.1890/14-0151.1 CrossRefPubMedGoogle Scholar
  26. Gonzalez VH, Mejia A, Rasmussen C (2004) Ecology and nesting behavior of Bombus atratus Franklin in Andean highlands (Hymenoptera: Apidae). J Hymenopt Res 13:234–242Google Scholar
  27. Goulson D (2003) Conserving wild bees for crop pollination. J Food Agric Environ 1:142–144Google Scholar
  28. Goulson D, Lye GC, Darvill B (2008) Decline and conservation of bumble bees. Annu Rev Entomol 53:191–208.  https://doi.org/10.1146/annurev.ento.53.103106.093454 CrossRefPubMedGoogle Scholar
  29. Goulson D, Lepais O, O’Connor S, Osborne JL, Sanderson RA, Cussans J, Goffe L, Darvill B (2010) Effects of land use at a landscape scale on bumblebee nest density and survival. J Appl Ecol 47:1207–1215.  https://doi.org/10.1111/j.1365-2664.2010.01872.x CrossRefGoogle Scholar
  30. Goulson D, Nicholls E, Botias C, Rotheray EL (2015) Bee declines driven by combined stress from parasites, pesticides, and lack of flowers. Science.  https://doi.org/10.1126/science.1255957 CrossRefPubMedGoogle Scholar
  31. Grixti JC, Wong LT, Cameron SA, Favret C (2009) Decline of bumble bees (Bombus) in the North American Midwest. Biol Conserv 142:75–84.  https://doi.org/10.1016/j.biocon.2008.09.027 CrossRefGoogle Scholar
  32. Hagen M, Wikelski M, Kissling WD (2011) Space use of bumblebees (Bombus spp.) revealed by radio-tracking. PLoS ONE.  https://doi.org/10.1371/journal.pone.0019997 CrossRefPubMedPubMedCentralGoogle Scholar
  33. Harder LD (1986) Influences on the density and dispersion of bumble bee nests (Hymenoptera, Apidae). Holarct Ecol 9:99–103Google Scholar
  34. Harmon-Threatt A, Chin K (2016) Common methods for tallgrass prairie restoration and their potential effects on bee diversity. Nat Areas J 36:400–411.  https://doi.org/10.3375/043.036.0407 CrossRefGoogle Scholar
  35. Herrmann F, Westphal C, Moritz RFA, Steffan-Dewenter I (2007) Genetic diversity and mass resources promote colony size and forager densities of a social bee (Bombus pascuorum) in agricultural landscapes. Mol Ecol 16:1167–1178.  https://doi.org/10.1111/j.1365-294X.2007.03226.x CrossRefPubMedGoogle Scholar
  36. Hines HM, Cameron SA, Deans AR (2007) Nest architecture and foraging behavior in Bombus pullatus (Hymenoptera: Apidae), with comparisons to other tropical bumble bees. J Kansas Entological Soc. 80:1–15.  https://doi.org/10.2317/0022-8567(2007)80[1:NAAFBI]2.0.CO;2 CrossRefGoogle Scholar
  37. Hobbs GA (1964) Ecology of species of Bombus Latr. (Hymenoptera: Apidae) in southern Alberta, I Subgenus Alpinobombus Skor. Can Entomol 96:1465.  https://doi.org/10.4039/Ent961465-11 CrossRefGoogle Scholar
  38. Hobbs GA (1965a) Ecology of Species of Bombus Latr. (Hymenoptera: Apidae) in Southern Alberta II. Subgenus Bombias Robt. Can Entomol 97:120–128.  https://doi.org/10.4039/Ent97120-2 CrossRefGoogle Scholar
  39. Hobbs GA (1965b) Ecology of species of Bombus Latr. (Hymenoptera: Apidae) in southern Alberta III. Subgenus Cullumanobombus Vogt. Can Entomol 97:1293–1302.  https://doi.org/10.4039/Ent971293-12 CrossRefGoogle Scholar
  40. Hobbs GA (1966a) Ecology of species of Bombus Latr. (Hymenoptera: Apidae) in southern Alberta. V. Subgenus Subterraneobombus Vogt. Can Entomol 98:288–294.  https://doi.org/10.4039/Ent98288-3 CrossRefGoogle Scholar
  41. Hobbs GA (1966b) Ecology of species of Bombus Latr. (Hymenoptera: Apidae) in southern Alberta IV. Subgenus Fervidobombus Skorikov. Can Entomol 98:33–39.  https://doi.org/10.4039/Ent9833-1 CrossRefGoogle Scholar
  42. Hobbs GA (1967) Ecology of species of Bombus (Hymenoptera: Apidae) in southern Alberta: VI Subgenus Pyrobombus. Can Entomol 99:1271–1292.  https://doi.org/10.4039/Ent991271-12 CrossRefGoogle Scholar
  43. Hoffmann WRE, Torres A, Neumann P (2004) A scientific note on the nest and colony development of the Neotropical bumble bee Bombus (Robustobombas) melaleucus. Apidologie 35:449–450.  https://doi.org/10.1051/apido:2004011 CrossRefGoogle Scholar
  44. Inoue MN, Yokoyama J, Tsuchida K (2010) Colony growth and reproductive ability of feral nests of the introduced bumblebee Bombus terrestris in northern Japan. Insectes Soc 57:29–38.  https://doi.org/10.1007/s00040-009-0047-8 CrossRefGoogle Scholar
  45. IUCN, 2017. The IUCN Red List of Threatened Species [WWW Document]. Version 2017-3. http://www.iucnredlist.org/. Accessed 4.2.18
  46. Janzen DH (1971) The ecological significance of an arboreal nest of Bombus pullatus in Costa Rica. J Kans Entomol Soc 44:210–216Google Scholar
  47. Kaemper W, Werner PK, Hilpert A, Westphal C, Bluethgen N, Eltz T, Leonhardt SD (2016) How landscape, pollen intake and pollen quality affect colony growth in Bombus terrestris. Landsc Ecol 31:2245–2258.  https://doi.org/10.1007/s10980-016-0395-5 CrossRefGoogle Scholar
  48. Kearns CA, Thomson JD (2001) The natural history of bumblebees: a sourcebook for investigations. University Press of Colorado, BoulderGoogle Scholar
  49. Kells AR, Goulson D (2003) Preferred nesting sites of bumblebee queens (Hymenoptera: Apidae) in agroecosystems in the UK. Biol Conserv 109:165–174.  https://doi.org/10.1016/S0006-3207(02)00131-3 CrossRefGoogle Scholar
  50. Kissling WD, Pattemore DE, Hagen M (2014) Challenges and prospects in the telemetry of insects. Biol Rev 89:511–530.  https://doi.org/10.1111/brv.12065 CrossRefGoogle Scholar
  51. Knight ME, Martin AP, Bishop S, Osborne JL, Hale RJ, Sanderson A, Goulson D (2005) An interspecific comparison of foraging range and nest density of four bumblebee (Bombus) species. Mol Ecol 14:1811–1820.  https://doi.org/10.1111/j.1365-294X.2005.02540.x CrossRefPubMedGoogle Scholar
  52. Knight ME, Osborne JL, Sanderson RA, Hale RJ, Martin AP, Goulson D (2009) Bumblebee nest density and the scale of available forage in arable landscapes. Insect Conserv Divers 2:116–124.  https://doi.org/10.1111/j.1752-4598.2009.00049.x CrossRefGoogle Scholar
  53. Koch JB, Strange JP, Williams PH (2012) Bumble bees of the western United States. The US Department of Agriculture, San FransiscoGoogle Scholar
  54. Kremen C, M’Gonigle LK, Diamond S (2015) EDITOR’S CHOICE: small-scale restoration in intensive agricultural landscapes supports more specialized and less mobile pollinator species. J Appl Ecol 52:602–610.  https://doi.org/10.1111/1365-2664.12418 CrossRefGoogle Scholar
  55. Lye GC, Park K, Osborne J, Holland J, Goulson D (2009) Assessing the value of rural stewardship schemes for providing foraging resources and nesting habitat for bumblebee queens (Hymenoptera: Apidae). Biol Conserv 142:2023–2032.  https://doi.org/10.1016/j.biocon.2009.03.032 CrossRefGoogle Scholar
  56. Lye GC, Osborne JL, Park KJ, Goulson D (2012) Using citizen science to monitor Bombus populations in the UK: nesting ecology and relative abundance in the urban environment. J Insect Conserv 16:697–707.  https://doi.org/10.1007/s10841-011-9450-3 CrossRefGoogle Scholar
  57. Michener CD, Laberge WE (1954) A large Bombus nest from Mexico. Psyche A 61:63–67.  https://doi.org/10.1155/1954/41470 CrossRefGoogle Scholar
  58. Milliron HE, Oliver DR (1966) Bumblebees from northern Ellesmere Island, with observations on usurpation by Megabombus hyperboreus (Schönh.) (Hymenoptera: Apidae). Can Entomol 98:207–213CrossRefGoogle Scholar
  59. Minahan DF, Brunet J (2018) Strong interspecific differences in foraging activity observed between honey bees and bumble bees using miniaturized radio frequency identification (RFID). Front Ecol Evol 6:158.  https://doi.org/10.3389/fevo.2018.00156 CrossRefGoogle Scholar
  60. Moquet L, Bacchetta R, Laurent E, Jacquemart A-L (2017) Spatial and temporal variations in floral resource availability affect bumblebee communities in heathlands. Biodivers Conserv 26:687–702.  https://doi.org/10.1007/s10531-016-1266-8 CrossRefGoogle Scholar
  61. Nakamura H, Toquenaga Y (2002) Estimating colony locations of bumble bees with moving average model. Ecol Res 17:39–48.  https://doi.org/10.1046/j.1440-1703.2002.00461.x CrossRefGoogle Scholar
  62. O’Connor S, Park KJ, Goulson D (2012) Humans versus dogs; a comparison of methods for the detection of bumble bee nests. J Apic Res 51:204–211.  https://doi.org/10.3896/IBRA.1.51.2.09 CrossRefGoogle Scholar
  63. O’Connor S, Park KJ, Goulson D (2017) Location of bumblebee nests is predicted by counts of nest-searching queens. Ecol Entomol 42:731–736.  https://doi.org/10.1111/een.12440 CrossRefGoogle Scholar
  64. Olesen JM (1989) Behavior and nest structure of the Amazonian Bombus-transversalis in Ecuador. J Trop Ecol 5:243–246.  https://doi.org/10.1017/S0266467400003540 CrossRefGoogle Scholar
  65. Osborne JL, Martin AP, Shortall CR, Todd AD, Goulson D, Knight ME, Hale RJ, Sanderson RA (2008) Quantifying and comparing bumblebee nest densities in gardens and countryside habitats. J Appl Ecol 45:784–792.  https://doi.org/10.1111/j.1365-2664.2007.01359.x CrossRefGoogle Scholar
  66. Palmer TP (1968) Establishment in nest boxes of at bumble bees Christchurch. N Z J Agric Res 11:737–739CrossRefGoogle Scholar
  67. Plath OE (1922) Notes on the nesting habits of several North American bumblebees. Psyche A 29:189–202CrossRefGoogle Scholar
  68. Plath OE (1927) Notes on the hibernation of several North American bumblebees. Ann Entomol Soc Am 20:181–192.  https://doi.org/10.1093/aesa/20.2.181 CrossRefGoogle Scholar
  69. Ramirez S, Cameron SA (2003) Army ant attacks by Eciton hamatum and E-rapax (Hymenoptera: Formicidae) on nests of the Amazonian bumble bee, Bombus transversalis (Hymenoptera: Apidae). J Kans Entomol Soc 76:533–535Google Scholar
  70. Rao S, Skyrm KM (2013) Nest density of the native bumble bee, Bombus nevadensis Cresson (Hymenoptera: Apoidea), in an agricultural landscape. J Kans Entomol Soc 86:93–97.  https://doi.org/10.2317/JKES120708.1 CrossRefGoogle Scholar
  71. Rasmont P, Aytekin AM, Kacar MS (2008) Ousting of the common redstart (Aves: Turdidae: Phoenicurus phoenicurus) from its nests by the bumblebee Bombus niveatus vorticosus (Hymenoptera: Apidae). Ann Soc Entomol Fr 44:251–255.  https://doi.org/10.1080/00379271.2008.10697560 CrossRefGoogle Scholar
  72. Rau P (1941) The nesting habits of Bombus medius Cresson, the Mexican bumblebee. Psyche A 48:166–168.  https://doi.org/10.1155/1941/92641 CrossRefGoogle Scholar
  73. Richards KW (1978) Nest site selection by bumble bees (Hymenoptera-Apidae) in southern Alberta. Can Entomol 110:301–318.  https://doi.org/10.4039/Ent110301-3 CrossRefGoogle Scholar
  74. Roulston TH, Goodell K (2011) The role of resources and risks in regulating wild bee populations. In: Berenbaum MR, Carde RT, Robinson G (eds) Annual Review of Entomology. Annual Review Inc, Palo Alto, pp 293–312.  https://doi.org/10.1146/annurev-ento-120709-144802 CrossRefGoogle Scholar
  75. Sakagami SF, Katayama E (1977) Nests of some Japanese bumblebees (Hymenoptera, Apidae). J Fac Sci Hokkaido Univ Ser VI Zool 21:92–153Google Scholar
  76. Sakagami SF, Nishijima Y (1973) Two heterospecific colonies found in Japanese bumblebees, Bombus schrencki and Bombus pseudobaicalensis (Hymenoptera, Apidae). Obihiro Zootech Univ Res Bull 7:628Google Scholar
  77. Sakagami SF, Akahira Y, Zucchi R (1967) Nest architecture and brood development in a neotropical bumblebee Bombus atratus. Insectes Soc 14:389.  https://doi.org/10.1007/BF02223686 CrossRefGoogle Scholar
  78. Shelly TE, Buchmann SL, Villalobos EM, Orourke MK (1991) Colony ergonomics for a desert-dwelling bumblebee species (Hymenoptera, Apidae). Ecol Entomol 16:361–370.  https://doi.org/10.1111/j.1365-2311.1991.tb00228.x CrossRefGoogle Scholar
  79. Sladen F (1912) The humble-bee: It’s life-history and how to domesticate it. Macmillon, LondonGoogle Scholar
  80. Suzuki Y, Kawaguchi LG, Toquenaga Y (2007) Estimating nest locations of bumblebee Bombus ardens from flower quality and distribution. Ecol Res 22:220–227.  https://doi.org/10.1007/s11284-006-0010-3 CrossRefGoogle Scholar
  81. Suzuki Y, Kawaguchi LG, Munidasa DT, Toquenaga Y (2009) Do bumble bee queens choose nest sites to maximize foraging rate? Testing models of nest site selection. Behav Ecol Sociobiol 63:1353–1362.  https://doi.org/10.1007/s00265-009-0789-3 CrossRefGoogle Scholar
  82. Svensson BG, Lundberg H (1977) Distribution of bumble bee nests in a subalpine-alpine area in relation to altitude and habitat (Hypmenoptera, Apidae). Zoon 5:63–72Google Scholar
  83. Svensson B, Lagerlof J, Svensson BG (2000) Habitat preferences of nest-seeking bumble bees (Hymenoptera: Apidae) in an agricultural landscape. Agric Ecosyst Environ 77:247–255.  https://doi.org/10.1016/S0167-8809(99)00106-1 CrossRefGoogle Scholar
  84. Szabo TI, Pengelly DH (1973) Over-wintering and emergence of Bombus (Pyrobombus) impatiens (Cresson) (Hymenoptera-Apidae) in southern Ontario. Insectes Soc 20:125–132.  https://doi.org/10.1007/BF02223343 CrossRefGoogle Scholar
  85. Taylor OM, Cameron SA (2003) Nest construction and architecture of the Amazonian bumble bee (Hymenoptera: Apidae). Apidologie 34:321–331.  https://doi.org/10.1051/apido:2003035 CrossRefGoogle Scholar
  86. Thomson DM (2016) Local bumble bee decline linked to recovery of honey bees, drought effects on floral resources. Ecol Lett 19:1247–1255.  https://doi.org/10.1111/ele.12659 CrossRefPubMedGoogle Scholar
  87. Waters J, O’Connor S, Park KJ, Goulson D (2011) Testing a detection dog to locate bumblebee colonies and estimate nest density. Apidologie 42:200–205.  https://doi.org/10.1051/apido/2010056 CrossRefGoogle Scholar
  88. Williams PH, Osborne JL (2009) Bumblebee vulnerability and conservation world-wide. Apidologie 40:367–387.  https://doi.org/10.1051/apido/2009025 CrossRefGoogle Scholar
  89. Willmer PG, Bataw AAM, Hughes JP (1994) The superiority of bumblebee to honeybees as pollinators—insect visits to raspberry flowers. Ecol Entomol 19:271–284.  https://doi.org/10.1111/j.1365-2311.1994.tb00419.x CrossRefGoogle Scholar
  90. Wray JC, Elle E (2015) Flowering phenology and nesting resources influence pollinator community composition in a fragmented ecosystem. Landsc Ecol 30:261–272.  https://doi.org/10.1007/s10980-014-0121-0 CrossRefGoogle Scholar
  91. Wray JC, Neame LA, Elle E (2014) Floral resources, body size, and surrounding landscape influence bee community assemblages in oak-savannah fragments. Ecol Entomol 39:83–93.  https://doi.org/10.1111/een.12070 CrossRefGoogle Scholar

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of BiologyYork UniversityTorontoCanada
  2. 2.Faculty of Environmental StudiesYork UniversityTorontoCanada

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