Long term use of some pesticides is killing off dung beetle populations

New research led by scientists at the University of Bristol has uncovered that long-term use of some pesticides to treat cattle for parasites is having a significantly detrimental effect on the dung beetle population. Researchers studied 24 cattle farms across south west England and found that farms that used certain pesticides had fewer species of dung beetle. Dr Bryony Sands, from the University's School of Biological Sciences, who led the research, said: "Dung beetles recycle dung pats on pastures, bringing the nutrients back into the soil and ensuring the pastures are fertile.

Nieuw advies EFSA voor residuen van bestrijdingsmiddelen in voeding voor zuigelingen en peuters

De Europese voedselveiligheidsautoriteit EFSA heeft een nieuw advies voor residuen van bestrijdingsmiddelen in voeding voor zuigelingen en peuters gepubliceerd. De voorstellen maken deel uit van een uitgebreide evaluatie van de veiligheid van residuen van bestrijdingsmiddelen in voedingsmiddelen die bedoeld zijn voor zuigelingen en jonge kinderen. De maximumgehalten van bepaalde soorten residuen van bestrijdingsmiddelen die aanwezig kunnen zijn in voedingsmiddelen, bedoeld voor zuigelingen en jonge kinderen, zouden opnieuw beoordeeld moeten worden.

Study finds 29 pesticides in Devon river

Researchers have found 29 different pesticides in a single river in Devon. Tests on four rivers in the county revealed 34 pesticides in total, as well as nine antimicrobials and veterinary drugs. Scientists said they were surprised and concerned by the results, and warned there would be harmful effects for plants and wildlife. The tests were carried out using a high-quality new technique created by scientists in Greenpeace Research Laboratories at the University of Exeter.

Scientists find widely used neonicotinoids in Ontario wild turkeys

Scientists with the Ontario Veterinary College at the University of Guelph and Environment and Climate Change Canada examined the livers of 40 wild turkeys in southern Ontario and found nine had detectable levels of neonicotinoids, a group of insecticides that coat the seeds of cash crops such as corn and soy beans to protect them from pests. The insecticide is taken up by the plant and distributed through its tissue as it grows.

Neonicotinoid residues in a long-distance migratory raptor

We present results on the presence of neonicotinoid residues in blood samples of a long-distant migratory food-specialist raptor, the European honey buzzard (Pernis apivorus). Further, we investigate the spatial relationship between neonicotinoid residue prevalence in honey buzzards with that of crop fields where neonicotinoids are typically used. A majority of all blood samples contained neonicotinoids, thiacloprid accounting for most of the prevalence.

Toxicokinetic-toxicodynamic models for three neonicotinoids and some aquatic macroinvertebrates

Exposure patterns in ecotoxicological experiments often do not match the exposure profiles for which a risk assessment needs to be performed. This limitation can be overcome by using toxicokinetic-toxicodynamic (TKTD) models for the prediction of effects under time-variable exposure. For the use of TKTD models in the environmental risk assessment of chemicals, it is required to calibrate and validate the model for specific compound–species combinations.

Save the frogs

Frogs are one of the oldest vertebrates on this planet. They have survived four mass extinctions, but currently they face rapid decline mostly due to habitat loss, pollution, pesticide use, over harvesting for food, collection for dissection and experimentation, disease, shrinking water sources, lack of conservation awareness and so forth. This has caused the extinction of hundreds of species worldwide.

Zahl der Gartenvögel nimmt ab

Seit 14 Jahren ruft der NABU inzwischen Anfang Mai zu Vogelzählaktionen auf. In diesem Jahr waren die Menschen bundesweit von Vater- bis Muttertag dazu aufgerufen, die Vögel im heimischen Garten zu zählen. Bis zum vergangenen Montag konnten die Teilnehmer die Ergebnisse melden. Während sich die Veranstalter über die rege Beteiligung freuen - 53.000 Vogelfreunde haben sich zurückgemeldet - finden sie die Ergebnisse besorgniserregend. Denn unter den Top 15 der Gartenvögel weisen sieben Arten so geringe Zahlen auf wie noch nie.

90 Prozent der deutschen Gewässer sind durch Schadstoffe belastet

Laut Umweltverband BUND sind mehr als 90 Prozent der deutschen Gewässer durch Schadstoffe und weitere Faktoren belastet. Vor allem Dünger und Pestizide stören die Umweltschützer. Die meisten Flüsse und Seen in Deutschland sind nach Einschätzung von Umweltschützern in einem schlechten Zustand. Insgesamt seien neun von zehn Gewässern durch Schadstoffe und Baumaßnahmen belastet, heißt es in einem Bericht vom Bund für Umwelt und Naturschutz Deutschland (BUND).

Irish bumblebee population in decline

Irish bumblebee populations recorded in 2017 were at the lowest since monitoring began six years ago, with marked losses in critical native species, according to the latest monitoring figures. The declines are confirmed by the All-Ireland Bumblebee Monitoring Scheme co-ordinated by Dr Tomás Murray, senior ecologist at the National Biodiversity Data Centre in Co Waterford.