Aktion Hummelschutz Newsletter 02/04

Content


Dear friend of the bumblebees:

This is the current issue of our newsletter. Comments, suggestions, and additional information are as always welcome and can be sent to me (homepage) or be delivered in the forum.

Sincerely yours,
Cornel van Bebber

 Content

  1. Latest Updates to the Homepage
  2. News
  3. Links | press | literature
  4. Contact Information

 

1. Latest Updates to the Homepage

1.1. An Attack on a Bumblebee Nest
Last year Klaus Kreft, a member of our network, reported on an interesting bumblebee nest located under a sidewalk slab. This nest seemed troubled from the beginning because Klaus noticed several queens fighting to the death around the entrance. But there’s more to this story.

On September 20th a hole appeared to have been started on the edge of the slab by an animal, probably a marten, although the nest itself had not been breached. On the 22nd however, the marten succeeded in reaching the nest by digging from the opposite side of the slab. The result? Scattered for 2 meters was nesting material, honey and larval cells, larvae, and a bunch of dead bees.

Klaus managed to resettle the remaining bumblebees in a nesting box a few meters from their old home. To see if his efforts were crowned by success, read here:
Attack on a bumblebee nest (automatic translation)

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1.2. Johann’s Bumblebee Diary
We’re fortunate to again be able to read about Johann Wiedl’s interesting and well-documented efforts in providing nesting sites for bumblebees. His diary has been a welcome addition to this newsletter for years. This is his first installment this year:

Johann writes:
"This year I’ve placed 53 nesting boxes in 14 locations; 27 above ground; 14 underground; and 12 above ground in natural settings.

Here’s how I prepared them:
For litter I used upholstery wool or moss, and provided each nest with a beeswax comb and sugared water mixed with pollen.

To stop wax moth infestations I placed 2 large handfuls of a mixture of lavender twigs and small pieces of soap.

I check them every Sunday”.
Johann´s 2004 Bumblebee diary (automatic translation)

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1.3. Nesting box and settlement
Bumblebee nesting boxes from Ralf BerghaneIn the last newsletter we published a manual on how to build bumblebee nesting boxes. Since then, Ralph Berghane, a member of our network, sent us a photo of his uniquely designed box.

Ralph’s box was built with the help of his children over the winter, and ended up being finished with an interesting and charming paint job. The excited creators are impatiently waiting for some new tenants.

In our forum (German only), experts and amateurs continue to discuss the best techniques in box placement, which species can be attracted to the boxes, and other details to help make the process more successful and enjoyable.

Our free instruction manual published on the homepage has been downloaded more than 700 times. You can download it here:
How to Build Bumblebee Nesting Boxes (German only)

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2. News

2.1. World Insect Population Dramatically Decreasing
Dr. Jeremy ThomasThere has been some very worrying news from Great Britain (In Germany it was broadcast on the radio station, “The Deutschlandfunk"). The study involved 20,000 naturalists who surveyed their flora and fauna and found, for example, that butterfly sightings have decreased up to 71 percent over the past 40 years. This decline is considered to be probably indicative of all insect populations.

The author of the study, Jeremy Thomas of the British Centre for Ecology and Hydrology, writes: "The results of this study are important, even if it’s only about butterflies and in Great Britain. It is probably indicative of a worldwide phenomenon.

This is the first time that it’s been shown that decreasing wild populations are being indicated for not only birds and plants, but also insects. Before this, many scientists believed insects were not affected to the same degree. It appears that wild bee populations, including bumblebees, are decreasing even faster than the butterflies."

The authors have presented an extremely somber scenario and speak of this as the "6th major mass extinction in the history of the earth".

A press release from Germany tends to agree with these conclusions. The Ecological Research Centre Leipzig-Halle (UFZ) is in the process of coordinating a 5 year project to determine "the extent of the loss of pollinators like bees and butterflies in Europe”.

This study of pollinator loss is divided into 4 stages and covers 27 countries. The first part of the study is to determine current populations. These data will then be compared to previous data collected over the past 20 years. The causes of the losses will then be determined, and ultimately the effects on wild and cultivated plants will be investigated.
Article on Canadian TV news site
Your opinion on this topic (English + German)
Press release UFZ (German only)
Article of the "Deutschlandfunk" (German only)

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2.2. A Student Writing on Bumblebees Needs Some Help
Theresa Kleinhenz, a biology student, is embarking on a new project: “The Formation of Bumblebee Colonies”. She has, thus far, constructed and placed 5 nesting boxes, but has only succeeding in having one occupied. One is not enough for her to do her study properly, and this is how you might be able to help. She’d like to be able to observe more settled nesting boxes and if you some available and you wouldn’t mind having her check on them occasionally, and you live near her.

Theresa lives in Bavaria in the region around "Burgwallbach (97659), a small village near Bad Neustadt an der Saale (97616). If you can help please send a quick reply to Cornel and he’ll get you in touch with Theresa.

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2.3. A Sensitive Farmer Makes an Effort
A farmer discovered on the internet some distressing news about the insect traps he uses to minimize the effects of a destructive insect (in German: “rapsstaengelruessler”) on his Brassica napus crop. It turns out that his traps, called “yellow bowl traps”, are indiscriminate and kill off all kinds of beneficial insects besides the targeted one, and these include bumblebees.

He came up with a solution by placing a mesh over the bowls that allows only insects equal or smaller in size to the problem creature leaving bees and other insects unharmed. He is also informing all of his colleagues about this problem, and is even setting up his own bumblebee nesting boxes. We need more farmers like him!
Yellow bowls as insect traps (automatic translation)
Newsletter 02/03 (automatic translation)

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2.4. Unscrupulous Insect Collectors Arrested in South Africa
Four germans were arrested for collecting rare and protected insects in South Africa to sell to equally unscrupulous collectors. More than 800 insects, including 211 rare beetles, some of which sell for several 1000 Euros each, were collected by the Bavarians from reserves and other protected areas.

The WWF estimates that the profit margins involved in this kind of trafficing are comparable to illegal arms and drugs.

The South African court fined the criminals: 2 had to pay 7000 Euros, the other 2, 60 and 120 Euros respectively. Was this enough punishment?
Articles on the topic:
Spiegel online (27.01.2004), press relations (28.01.2004)
What’s your opinion on this topic? (English + German)

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2.5. Bayer and BASF: Legal Headaches from Noxious Pesticides
In our 04/03 newsletter we reported that the Bayer pesticide “Gaucho” is probably responsible for causing of widespread death of wild bees (and probably all kinds of other insects as well). The German newspaper "Sueddeutsche Zeitung" has published a report on this topic in their Feb. 20th issue.

It turns out that Bayer and BASF (with its “Regent TS”) are being pressured politically and legally to take these noxious products out of production. Both firms, not surprisingly, are fighting this in the courts.

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3. Links | press | literature

Bumblebees Used as Pollinators in Greenhouses
Two newspapers (Brueckenbauer, 09.03.2004; and Tagblatt, 13.03.2004) have reported that a number of Swiss and Dutch farmers are now using bumblebees to pollinate their tomatoes and cucumbers in large greenhouses. This has proven to be labour-saving and economically feasible.

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4. Contact Information
Contact
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Only German newsletter has 560 subscribers (01.04.2004) and is sent only on demand. Any subscriber can cancel the newsletter at any time.
V.i.S.d.P.:
Cornel van Bebber
Meertal 11
D-41464 Neuss

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