Das Verschwinden der Schmetterlinge

Der Hang liegt am Keilstein bei Regensburg, mitten in einem Naturschutzgebiet. Jan Christian Habel besucht diesen Ort gern mit seinen Studenten. Habel ist Schmetterlingsexperte, er hat einen Lehrstuhl für Terrestrische Ökologie an der Technischen Universität München. Mitte Juli war Habel wieder mit einer Gruppe am Hang. Es war eine traurige Expedition. „Seltene Falterarten waren nicht mehr vorhanden“, sagt er. „Wir haben nur Trivialarten gefunden.“ Aber auch von diesen eigentlichen häufig vorkommenden Schmetterlingen entdeckten Habel und die Studenten viel weniger Exemplare als sonst.

Het water van Delfland blijft ook in 2016 een bestrijdingsmiddelenriool

De waterkwaliteitsverbetering van de afgelopen jaren in glastuinbouwgebieden in het Hoogheemraadschap van Delfland stagneert. Dat is de belangrijkste conclusie die Delfland heeft getrokken uit de Waterkwaliteitsrapportage over 2016. Uit de meetresultaten over 2016 blijkt dat de concentraties bestrijdingsmiddelen en meststoffen (stikstof en fosfaat) nog steeds te hoog zijn en niet verminderen. De hoogste en meeste normoverschrijdingen worden aangetroffen in de glastuinbouwgebieden.

Our Daily Poison - By Dr Rosemary Mason

In 2010, my life changed when Dr Henk Tennekes and I traded books. His was: The systemic insecticides: a disaster in the making and ours was: The Year of the Bumblebee: Observations in a small Nature Reserve. Dr Henk Tennekes, an independent toxicologist based in the Netherlands, was the first researcher to recognise the extreme toxicity of low levels of systemic neonicotinoid insecticides that have become widespread in the environment.

Three rivers in the Cameron Highlands declared 'dead'

Regional Environment Awareness Cameron Highlands (REACH) president Ramakrishnan Ramasamy said most rivers in the highland, known for its tourism and agriculture, are heavily polluted. He said data from the Department of Environment (DoE) and the Drainage and Irrigation Department (DID) showed that only about 10 per cent of 123 rivers were in Class I and Class II, while the remainder were in Class III and Class IV. He also said three rivers had been declared biologically dead, and came under Class V of the classification.

Pesticide Impact on Bay Delta Fish Could Be Greater Than Realized

New monitoring in the Bay Delta shows that the water is a soup of urban and agricultural insecticides, herbicides and fungicides. When combined, pesticides at sublethal levels can have deadly synergistic effects on fish. “The Sacramento River and San Joaquin River have been monitored for years, but historically there has been little monitoring in the Delta itself,” says Michelle Hladik, an environmental chemist who leads the USGS Pesticide Fate Research Group.

Non-alcoholic fatty liver disease in rats following chronic exposure to an ultra-low dose of Roundup herbicide

The impairment of liver function by low environmentally relevant doses of glyphosate-based herbicides (GBH) is still a debatable and unresolved matter. Previously we have shown that rats administered for 2 years with 0.1 ppb (50 ng/L glyphosate equivalent dilution; 4 ng/kg body weight/day daily intake) of a Roundup GBH formulation showed signs of enhanced liver injury as indicated by anatomorphological, blood/urine biochemical changes and transcriptome profiling.

Butterflies on both sides of the Atlantic Ocean are in rapid decline

Urban populations of 28 butterfly species have fallen 69 percent across the UK since 1995, while in America monarch butterflies are down 80 percent since the mid-1990s and 27 percent since this time last year. The decline is worrying, say scientists, because butterflies are recognized as environmental indicators due to their rapid responses to small changes in climate and habitat.

Alarmierende Zustände in Schweizer Bächen

Umweltorganisationen haben vom Bundesrat angesichts der alarmierenden Resultate der Gewässeruntersuchungen einen wirkungsvollen Pestizidreduktionsplan gefordert. Denn über die Nahrungsmittelkette sei auch der Mensch vom giftigen Pestizidcocktail betroffen. Pro Natura spricht von alarmierenden Zuständen. Der Unmut in der Bevölkerung über den Pestizidmix in den Bächen sei gross, schreibt die Naturschutzorganisation in einer Mitteilung vom Dienstag. Dies zeigten auch zwei kürzlich lancierte Volksinitiativen für sauberes Trinkwasser und gegen synthetische Pestizide.

Persistently high pesticide levels found in small Swiss streams

Small watercourses are contaminated with large numbers of herbicides, fungicides and insecticides. A study commissioned by the Federal Office for the Environment and published today shows that the legal requirements specified for water quality are not met in any of the five Swiss streams investigated. Indeed, thresholds for acute toxicity to aquatic organisms were also exceeded. Bioassays indicate that biological communities are adversely affected by mixtures of substances.

Postregistration monitoring of pesticides is urgently required to protect ecosystems

Current admission policies for pesticides follow a controlled experimental tiered risk assessment approach, giving results that are difficult to extrapolate to a real-world situation. Later analyses of compounds such as DDT and neonicotinoid pesticides clearly show that the actual chemical impacts frequently affect many more components of an ecosystem than a priori suggested by risk assessment. Therefore, to manage the actual risks for ecosystems imposed by manufactured compounds, it is proposed that current admission policies for chemicals be enriched by using postregistration monitoring.