Have a quick look how busy our team was creating together an excellent meal during our company excursion to a Cologne event kitchen...
Large-scale bee-monitoring study now published
The study was conducted on three different bee species (honey bees, large earth bumble bees and red mason bees) between 2013 and 2015 in Northern Germany. Both the neonicotinoid free reference site and the test site, where bees were exposed to flowering winter oilseed rape grown from seeds dressed with clothianidin (Elado®), comprised each 65 km2. None of the investigated endpoints (e.g. colony size, honey production, parasitisation rate, offspring production) revealed any adverse effect of the exposure to clothianidin.
These articles make a considerable contribution to the scientific debate whether neonicotinoids pose a risk to managed and wild bees.
Together with an introductory paper
these puclications will form a special issue in Ecotoxicology. All articles are available online:
Heimbach F, Russ A, Schimmer M, Born K: Large-scale Monitoring of Effects of Clothianidin Dressed Oilseed Rape Seeds on
Pollinating Insects in Northern Germany: Implementation of the monitoring project and its representativeness (DOI: 10.1007/s10646-016-1724-9)
Rolke D, Persigehl M, Peters B, Sterk G, Blenau W: Large-scale Monitoring of Effects of Clothianidin-Dressed Oilseed Rape
Seeds on Pollinating Insects in Northern Germany: Residues of Clothianidin in Pollen, Nectar and Honey (DOI 10.1007/s10646-016-1723-x)
Rolke D, Fuchs S, Gruenewald B, Gao Z, Blenau W: Large-scale Monitoring of Effects of Clothianidin-Dressed Oilseed Rape Seeds
on Pollinating Insects in Northern Germany: Effects on Honey Bees (Apis mellifera) (DOI 10.1007/s10646-016-1725-8)
Sterk G, Peters B, Gao Z, Zumkier U: Large-scale monitoring of effects of clothianidin dressed OSR seeds on pollinating
insects in Northern Germany: Effects on large earth bumble bees (Bombus terrestris) (DOI: 10.1007/s10646-016-1730-y)
Peters B, Gao Z, Zumkier U: Large-scale monitoring of effects of clothianidin dressed oilseed rape seeds on pollinating
insects in Northern Germany: Effects on red mason bees (Osmia bicornis)
The athletic part of our team participated successfully at the "Business Run" B2Run Cologne.
July/August 2016: Ring test semi-field study with solitary bees
tier3 solutions participates in the ICPPR ring test developing a test-design for semi-field trials with mason bees (Osmia spp.). The field phase on flowering Phacelia has been successfully completed and nesting units were removed from tunnels.
May/June 2016: Monitoring reproductive success of birds in the field
Currently, the tier3 solutions field study team is performing a monitoring study on the reproductive success of birds under field conditions. The focal species are small, insectivorous birds breeding in nest boxes in orchards. Focusing on nest box breeders enables the collection of high-quality breeding data without disturbing the birds or attracting predators to their nests.
Our team has installed up to several hundred nest boxes in a given study area and these are regularly checked for nests and eggs. The fertility of eggs and their growth stage are monitored using the ‘candling’ technique.
Once chicks have hatched, nests are carefully monitored using a small, illuminated mirror. This enables regular observation of chicks for brief periods while only slightly opening the nest box. Thus, it is possible to record and monitor, e.g. the number, age and survival of chicks while minimising disturbance to the chicks.
The body weight of chicks is also measured during monitoring. Individual chicks may furthermore be marked with a leg ring (bird band) starting at ten days of age, and an individual’s further development can be monitored until fledging. The unique number engraved on the ring enables data from ringed birds that are recaptured or sighted at a later date to be linked to previously gathered nest data.
Aerial view of a setup of bee tunnels for a higher tier tunnel test with honey bees in oilseed rape