> Did anyone read the actual study?
Of course - it would be utterly irresponsible to comment without having read at least the key parts of the paper.
It's here - full text online - https://iopscience.iop.org/article/10.1088/1748-9326/acff0c/pdf
"Climatic conditions and soil productivity were among the most important variables for estimating honey yields, with states in warm or cool regions with productive soils having the highest honey yields per colony."
So there it is again - climate. Beekeepers must be stewards for their bees, which means being stewards for the water, the air, and the soil.
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