Hobby beekeepers winter losses in Oregon 16/17

[Finman]

http://pnwhoneybeesurvey.com/survey-results/2016-17-survey-reports/

Strange that I did not find this with E-browser. Firefox found it and smartphone.

016-17 Survey Reports

Winter Bee Losses of Oregon Backyard Beekeepers, 2016-2017 by Dewey M. Caron and Jenai Fitzpatrick (View PDF report here)

Lots of information

Here is couple interesting...

 

[Finman]

 

[Finman]

 

[Finman]

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[Finman]

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[For want of a better word]

Those statistics just do not add up!
Where was beekeeper error?

Nos da

 

[Finman]

Those statistics just do not add up!
Where was beekeeper error?

Nos da

You may your brains

A good research has cross-examination questions. When you look what killed the hives and what are losses with dfferent varroa treatment methods, there is a big difference between in losses.

 

[Finman]

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http://pnwhoneybeesurvey.com/survey-results/2014-15-survey-reports/

Winter Bee Losses of Oregon Backyard Beekeepers, 2014-2015

 

[Hachi]

Interesting Finny have you copied all the charts or are you teasing uis with the hope of more to come?

 

[B+.]

Interesting Finny have you copied all the charts or are you teasing uis with the hope of more to come?

Personally, I'm looking forward to the multi-year analysis....but I think I'll be content with the one-page executive summary ;-)

 

[Finman]

Personally, I'm looking forward to the multi-year analysis....but I think I'll be content with the one-page executive summary ;-)

They seems to have 3 years data. Have you in UK this kind or knowledge?

I would like to copy same kind of data from Tamar Valley, if you have such.

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[Finman]

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Very interesting are charts, how beeks have trusted to small cells in varroa treatment and VSH bees.

Then the efficacy of Oxalic vaporazion. It is not best in the world.

Do nothing is better than Hopguard.
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[user 6228]

http://pnwhoneybeesurvey.com/survey-results/2016-17-survey-reports/

Strange that I did not find this with E-browser. Firefox found it and smartphone.

016-17 Survey Reports

Winter Bee Losses of Oregon Backyard Beekeepers, 2016-2017 by Dewey M. Caron and Jenai Fitzpatrick (View PDF report here)

Lots of information

Here is couple interesting...

Looks like all had top ventilation

 

[Finman]

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This is interesting too, is honey better winter food than sugar. Answer was, that there are no practical difference.

"One hundred three (103) respondents reported feeding frames of honey and 14 said they fed liquid honey. Loss rates were however not different from overall rates; those feeding honey in either manner had a 50% loss rate, not significantly different form the overall 2017 loss rate of 48%. Two hundred twenty-two individuals fed sugar syrup to their colonies. Overall losses were 47%, again not statistically different from the overall loss rate of 48%. Two hundred twenty two individuals reported feeding sugar syrup"

 

[Finman]

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In what form sugar has given and what loss rate have the hives. Best results have give dry and hard sugar feeding.

http://pnwhoneybeesurvey.com/wp-content/uploads/2017/06/ORfig10.png

 

[maddydog]

Bees kept in Oregon backyards have a tough life regardless of hive type/feeding/Varroa treatments etc.

 

[Finman]

Bees kept in Oregon backyards have a tough life regardless of hive type/feeding/Varroa treatments etc.

Yes, indeed. Losses from 34% to 70% depending on area. On average 48%.

Backyard beekeepers have double amount of losses compared to hundred hive owners.

 

[user 6228]

notice that lower heat loss hives i.e. nucs, warre, top bar all had higher colony losses. Clear indication that the hives had top ventiliation.

 

[Finman]

notice that lower heat loss hives i.e. nucs, warre, top bar all had higher colony losses. Clear indication that the hives had top ventiliation.

Right. Empty box is usual over the hive.

IT seemed to me, that they do not use much insulation or wrappings.

Much starvations (13%).

Varroa losses have been estimated quite Low.

 

[coffindodger]

Bees kept in Oregon backyards have a tough life regardless of hive type/feeding/Varroa treatments etc.

Yes, looking at other historical documents a 25% loss was considered a very good year (sorry from memory haven't references). The missing factor for this survey is the weather. Was it as the previous year or colder, warmer, wetter etc and just how long was the no-foraging season, again in comparison? There were less than 300 apiaries in the survey so the small percentage differences in some areas are well within the expected range of deviation and thus show no real difference. It's good information, but only useful seen within a long period of continuing results.