Algemeen

Systemic pesticide concerns extend beyond the bees

In the summer of 2010, Henk Tennekes from Experimental Toxicology Services Nederland at Zutphen warned that the accumulation of neonicotinoids in the environment would not only decimate useful insects but also have a knock-on effect on other species, including birds (Curr. Biol. (2011) 21, R137–R139). At the time, Tennekes did not find much support for his views and went on to publish his warnings as a book — The Systemic Insecticides: A Disaster in the Making.

Earth has entered an era of mass extinction unparalleled since the dinosaurs died out 66 million years ago

A 2015 study co-authored by Paul Ehrlich, professor emeritus of biology, and colleagues showed that Earth has entered an era of mass extinction unparalleled since the dinosaurs died out 66 million years ago. The specter of extinction hangs over about 41 percent of all amphibian species and 26 percent of all mammals, according to the International Union for Conservation of Nature (IUCN), which maintains a list of threatened and extinct species.

Die Zahl der weltweit bedrohten Tier- und Pflanzenarten hat dieses Jahr einen neuen Rekordstand erreicht

Mit rund 25'800 bedrohten Tier- und Pflanzenarten sei im zu Ende gehenden Jahr ein neuer dramatischer Höchststand erreicht worden. Ein Jahr zuvor waren es noch 24'000 bedrohte Arten. "Wir Menschen verursachen das grösste Artensterben seit Ende der Dinosaurier", resümierte Eberhard Brandes, Vorstand des WWF Deutschland. Auch in der Schweiz gingen die Bestände einiger Arten merklich zurück. Mehr als 40 Prozent der Insektenarten in der Schweiz gälten als bedroht, darunter Bienen und Schmetterlinge, sagte WWF-Sprecherin Perrette Rey in Lausanne auf Anfrage.

The population of 28 British bird species more than halved over periods of 31–48 years

The 20th annual BirdTrends report highlights the rapid decline of the greenfinch, whose population has dropped by 59pc in the UK in just ten years. Bird experts say the decline is caused by a widespread and severe outbreak of a disease called trichomonosis, which first affected bird populations in 2006. The steepest long-term populations declines measured are for Turtle Dove, Tree Sparrow, Willow Tit, Grey Partridge and Nightingale, which have all declined by 90% or more since 1967, as, almost certainly, has Lesser Spotted Woodpecker.

New EPA Assessment: Neonicotinoid Pesticides Pose Serious Risks to Birds, Aquatic Invertebrates

The U.S. Environmental Protection Agency released multiple scientific assessments today that found commonly used neonicotinoid pesticides can kill and harm birds of all sizes. Separate analyses also found the pesticides pose significant danger to aquatic invertebrates, which play a crucial role in supporting larger ecosystems. The troubling assessments come on the heels of earlier EPA analyses and thousands of scientific studies that have identified substantial risks to pollinators and aquatic invertebrates from this class of pesticides.

Eight English rivers are polluted with neonicotinoid pesticides

Rivers in England are contaminated with powerful insecticides, new testing has revealed, increasing concerns over the impact of the toxic chemicals on fish and birds. Eight rivers in England are heavily contaminated with neonicotinoid pesticides. Two of the rivers, the Waveney on the border between Norfolk and Suffolk, and the Tame in the West Midlands, had an “acute level” of pollution, according to tests conducted by the Environment Agency last year.

Insect decline: the biodiversity of the entire world is at stake

Bees and butterflies are experiencing widespread population decline, creating public concern in recent years. Data collected in Germany suggest that it’s not just bees and butterflies at risk: insect populations overall have plummeted by more than 75 percent since 1989. Scientists have known about the population decline for several years. However, they didn’t know how many species were declining, and they didn’t expect it to be happening so fast.

Onze landbouwgrond is zo dood als een pier

Het zijn niet alleen insecten en vogels boven de grond die last hebben van bestrijdingsmiddelen. In de bodem waar planten en gewassen groeien, werkt het gif net zo goed. Je hoort weinig over het bodemleven dat zich daar afspeelt. Maar het is essentieel. Miljoenen bacteriën, schimmels en allerlei andere bodemdiertjes, van aaltjes tot regenwormen, zorgen ervoor dat planten voedingsstoffen kunnen opnemen, dat er genoeg lucht in de bodem zit om gewassen te kunnen verbouwen en dat er voldoende gangetjes zijn waardoor de regen kan wegstromen.

Oorzaak van insectensterfte is al bekend: chemische bestrijdingsmiddelen

Toxicoloog Henk Tennekes is blij dat er eindelijk onrust ontstaat over de insectensterfte. Maar de belangrijkste boodschap blijft volgens hem achterwege: het zijn recente, chemische bestrijdingsmiddelen (neonicotinoïden) die de insecten doden. ‘Die moeten direct van de markt.’

Lees verder het artikel van Petra Noordhuis in het Nederlands Dagblad, 23-10-17
https://www.nd.nl/nieuws/nederland/oorzaak-van-insectensterfte-is-al-be…

Negative impacts of neonicotinoids in aquatic environments are a reality

Initial assessments that considered these insecticides harmless to aquatic organisms may have led to a relaxation of monitoring efforts, resulting in the worldwide contamination of many aquatic ecosystems with neonicotinoids. The decline of many populations of invertebrates, due mostly to the widespread presence of waterborne residues and the extreme chronic toxicity of neonicotinoids, is affecting the structure and function of aquatic ecosystems. Consequently, vertebrates that depend on insects and other aquatic invertebrates as their sole or main food resource are being affected.