TY  - JOUR
AU  - Gray, Alison
AU  - Brodschneider, Robert
AU  - Adjlane, Noureddine
AU  - Ballis, Alexis
AU  - Brusbardis, Valters
AU  - Charriere, Jean-Daniel
AU  - Chlebo, Robert
AU  - Coffey, Mary F.
AU  - Cornelissen, Bram
AU  - da Costa, Cristina Amaro
AU  - Csaki, Tamas
AU  - Dahle, Bjorn
AU  - Danihlik, Jiri
AU  - Drazić, Marica Maja
AU  - Evans, Garth
AU  - Fedoriak, Mariia
AU  - Forsythe, Ivan
AU  - de Graaf, Dirk
AU  - Gregorc, Ales
AU  - Johannesen, Jes
AU  - Kauko, Lassi
AU  - Kristiansen, Preben
AU  - Martikkala, Maritta
AU  - Martin-Hernandez, Raquel
AU  - Aurelio Medina-Flores, Carlos
AU  - Mutinelli, Franco
AU  - Patalano, Solenn
AU  - Petrov, Plamen
AU  - Raudmets, Aivar
AU  - Ryzhikov, Vladimir A.
AU  - Simon-Delso, Noa
AU  - Stevanović, Jevrosima
AU  - Topolska, Grazyna
AU  - Uzunov, Aleksandar
AU  - Vejsnaes, Flemming
AU  - Williams, Anthony
AU  - Zammit-Mangion, Marion
AU  - Soroker, Victoria
PY  - 2019
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1746
AB  - This short article presents loss rates of honey bee colonies over winter 2017/18 from 36 countries, including 33 in Europe, from data collected using the standardized COLOSS questionnaire. The 25,363 beekeepers supplying data passing consistency checks in total wintered 544,879 colonies, and reported 26,379 (4.8%, 95% CI 4.7-5.0%) colonies with unsolvable queen problems, 54,525 (10.0%, 95% CI 9.8-10.2%) dead colonies after winter and another 8,220 colonies (1.5%, 95% CI 1.4-1.6%) lost through natural disaster. This gave an overall loss rate of 16.4% (95% CI 16.1-16.6%) of honey bee colonies during winter 2017/18, but this varied greatly from 2.0 to 32.8% between countries. The included map shows relative risks of winter loss at regional level. The analysis using the total data-set confirmed findings from earlier surveys that smaller beekeeping operations with at most 50 colonies suffer significantly higher losses than larger operations (p < .001). Beekeepers migrating their colonies had significantly lower losses than those not migrating (p < .001), a different finding from previous research. Evaluation of six different forage sources as potential risk factors for colony loss indicated that intensive foraging on any of five of these plant sources (Orchards, Oilseed Rape, Maize, Heather and Autumn Forage Crops) was associated with significantly higher winter losses. This finding requires further study and explanation. A table is included giving detailed results of loss rates and the impact of the tested forage sources for each country and overall.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Apicultural Research
T1  - Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources
VL  - 58
IS  - 4
SP  - 479
EP  - 485
DO  - 10.1080/00218839.2019.1615661
ER  - 

@article{
author = "Gray, Alison and Brodschneider, Robert and Adjlane, Noureddine and Ballis, Alexis and Brusbardis, Valters and Charriere, Jean-Daniel and Chlebo, Robert and Coffey, Mary F. and Cornelissen, Bram and da Costa, Cristina Amaro and Csaki, Tamas and Dahle, Bjorn and Danihlik, Jiri and Drazić, Marica Maja and Evans, Garth and Fedoriak, Mariia and Forsythe, Ivan and de Graaf, Dirk and Gregorc, Ales and Johannesen, Jes and Kauko, Lassi and Kristiansen, Preben and Martikkala, Maritta and Martin-Hernandez, Raquel and Aurelio Medina-Flores, Carlos and Mutinelli, Franco and Patalano, Solenn and Petrov, Plamen and Raudmets, Aivar and Ryzhikov, Vladimir A. and Simon-Delso, Noa and Stevanović, Jevrosima and Topolska, Grazyna and Uzunov, Aleksandar and Vejsnaes, Flemming and Williams, Anthony and Zammit-Mangion, Marion and Soroker, Victoria",
year = "2019",
abstract = "This short article presents loss rates of honey bee colonies over winter 2017/18 from 36 countries, including 33 in Europe, from data collected using the standardized COLOSS questionnaire. The 25,363 beekeepers supplying data passing consistency checks in total wintered 544,879 colonies, and reported 26,379 (4.8%, 95% CI 4.7-5.0%) colonies with unsolvable queen problems, 54,525 (10.0%, 95% CI 9.8-10.2%) dead colonies after winter and another 8,220 colonies (1.5%, 95% CI 1.4-1.6%) lost through natural disaster. This gave an overall loss rate of 16.4% (95% CI 16.1-16.6%) of honey bee colonies during winter 2017/18, but this varied greatly from 2.0 to 32.8% between countries. The included map shows relative risks of winter loss at regional level. The analysis using the total data-set confirmed findings from earlier surveys that smaller beekeeping operations with at most 50 colonies suffer significantly higher losses than larger operations (p < .001). Beekeepers migrating their colonies had significantly lower losses than those not migrating (p < .001), a different finding from previous research. Evaluation of six different forage sources as potential risk factors for colony loss indicated that intensive foraging on any of five of these plant sources (Orchards, Oilseed Rape, Maize, Heather and Autumn Forage Crops) was associated with significantly higher winter losses. This finding requires further study and explanation. A table is included giving detailed results of loss rates and the impact of the tested forage sources for each country and overall.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Apicultural Research",
title = "Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources",
volume = "58",
number = "4",
pages = "479-485",
doi = "10.1080/00218839.2019.1615661"
}

Gray, A., Brodschneider, R., Adjlane, N., Ballis, A., Brusbardis, V., Charriere, J., Chlebo, R., Coffey, M. F., Cornelissen, B., da Costa, C. A., Csaki, T., Dahle, B., Danihlik, J., Drazić, M. M., Evans, G., Fedoriak, M., Forsythe, I., de Graaf, D., Gregorc, A., Johannesen, J., Kauko, L., Kristiansen, P., Martikkala, M., Martin-Hernandez, R., Aurelio Medina-Flores, C., Mutinelli, F., Patalano, S., Petrov, P., Raudmets, A., Ryzhikov, V. A., Simon-Delso, N., Stevanović, J., Topolska, G., Uzunov, A., Vejsnaes, F., Williams, A., Zammit-Mangion, M.,& Soroker, V.. (2019). Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources. in Journal of Apicultural Research
Taylor & Francis Ltd, Abingdon., 58(4), 479-485.
https://doi.org/10.1080/00218839.2019.1615661

Gray A, Brodschneider R, Adjlane N, Ballis A, Brusbardis V, Charriere J, Chlebo R, Coffey MF, Cornelissen B, da Costa CA, Csaki T, Dahle B, Danihlik J, Drazić MM, Evans G, Fedoriak M, Forsythe I, de Graaf D, Gregorc A, Johannesen J, Kauko L, Kristiansen P, Martikkala M, Martin-Hernandez R, Aurelio Medina-Flores C, Mutinelli F, Patalano S, Petrov P, Raudmets A, Ryzhikov VA, Simon-Delso N, Stevanović J, Topolska G, Uzunov A, Vejsnaes F, Williams A, Zammit-Mangion M, Soroker V. Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources. in Journal of Apicultural Research. 2019;58(4):479-485.
doi:10.1080/00218839.2019.1615661 .

Gray, Alison, Brodschneider, Robert, Adjlane, Noureddine, Ballis, Alexis, Brusbardis, Valters, Charriere, Jean-Daniel, Chlebo, Robert, Coffey, Mary F., Cornelissen, Bram, da Costa, Cristina Amaro, Csaki, Tamas, Dahle, Bjorn, Danihlik, Jiri, Drazić, Marica Maja, Evans, Garth, Fedoriak, Mariia, Forsythe, Ivan, de Graaf, Dirk, Gregorc, Ales, Johannesen, Jes, Kauko, Lassi, Kristiansen, Preben, Martikkala, Maritta, Martin-Hernandez, Raquel, Aurelio Medina-Flores, Carlos, Mutinelli, Franco, Patalano, Solenn, Petrov, Plamen, Raudmets, Aivar, Ryzhikov, Vladimir A., Simon-Delso, Noa, Stevanović, Jevrosima, Topolska, Grazyna, Uzunov, Aleksandar, Vejsnaes, Flemming, Williams, Anthony, Zammit-Mangion, Marion, Soroker, Victoria, "Loss rates of honey bee colonies during winter 2017/18 in 36 countries participating in the COLOSS survey, including effects of forage sources" in Journal of Apicultural Research, 58, no. 4 (2019):479-485,
https://doi.org/10.1080/00218839.2019.1615661 . .