Honeybees

Despite a steady rise in the manufacture and release of synthetic chemicals, research on the ecological effects of pharmaceuticals, pesticides, and industrial chemicals is severely lacking. This blind spot undermines efforts to address global change and achieve sustainability goals. So reports a new study in Frontiers in Ecology and the Environment. Emma J. Rosi , a freshwater ecologist at the Cary Institute and a co-author on the paper, explains, "To date, global change assessments have ignored synthetic chemical pollution.

I colossi dell’agrochimica tornano all’assalto di Bruxelles per salvare i loro prodotti a base di neonicotinoidi. Nel 2013 l’Agenzia europea per la sicurezza alimentare (EFSA) aveva puntato il dito contro il thiamethoxam (prodotto da Syngenta), il clothianidin e l’imidacloprid (entrambi prodotti da Bayer) nel caso di applicazione spray sulle colture. L’Agenzia Ue con sede a Parma aveva poi concluso in uno studio del 2015 che «sono stati identificati gravi rischi o non è stato possibile escluderli».

Die zwischen Getreidehalmen schimmernden, blutroten Blüten des Klatschmohns sind vielen Menschen ein vertrauter Sommerbegleiter. Tatsächlich sind aber seine zarten Blüten auf Äckern gar nicht mehr so häufig zu sehen. Denn zusammen mit vielen anderen Ackerwildpflanzen verschwindet der Mohn allmählich aus einem Lebensraum, der flächenmäßig zu den wichtigsten Ökosystemen in Deutschland zählt. In den heute viel zu intensiv bewirtschafteten Äckern lebten ursprünglich rund 350 Pflanzenarten.

The world’s most widely used insecticides harm the ability of bees to vibrate flowers and shake out the pollen to fertilise crops, according to preliminary results from a new study. Some flowers, such as those of crops like tomatoes and potatoes, must be shaken to release pollen and bumblebees are particularly good at creating the buzz needed to do this. But the research shows that bumblebees exposed to realistic levels of a neonicotinoid pesticide fail to learn how to create the greatest buzz and collect less pollen as a result.

Wenn Frank Baum aus Staufen in seinen Garten ging, fehlte es ihm an bunter Gesellschaft. Die Schmetterlinge machten sich rar. Den kleinen Fuchs oder das Tagpfauenauge suchte der Biochemiker vergeblich. Jetzt hat Baum sich zusammen mit anderen Naturschützern an die Landesregierung gewandt, um etwas gegen das Insektensterben zu unternehmen. Sie wollen erreichen, dass bestimmte Pflanzenschutzmittel dauerhaft verboten werden. Ansonsten befürchten sie einen Frühling ohne Schmetterlinge.

The bee findings were not what Syngenta expected to hear. The pesticide giant had commissioned James Cresswell, an expert in flowers and bees at the University of Exeter in England, to study why many of the world’s bee colonies were dying. Companies like Syngenta have long blamed a tiny bug called a varroa mite, rather than their own pesticides, for the bee decline. Dr. Cresswell has also been skeptical of concerns raised about those pesticides, and even the extent of bee deaths. But his initial research in 2012 undercut concerns about varroa mites as well.

O F F E N E R B R I E F
an den Ministerpräsidenten von Baden-Württemberg, Herrn Winfried Kretschmann sowie an die zuständigen Minister der Landesregierung
aus Anlass des drastischen Rückgangs unserer Insektenpopulationen

Sehr geehrter Herr Ministerpräsident,
sehr geehrter Herr Minister Hauk, sehr geehrter Herr Minister Untersteller,

ABOUT 1.4 billion jobs and three-quarters of all crops depend on pollinators, researchers said this week, warning of a dire threat to human welfare if the falls in bee and butterfly numbers are not halted. “World food supplies and jobs are at risk unless urgent action is taken to stop global declines of pollinators,” said a statement from the University of Reading, whose researchers took part in the global review.

Michael McCarthy has published a powerful, sensitive new book, The Moth Snowstorm: Nature and Joy, a book about the wonders of the natural world and about its decline. In a chapter called “The Great Thinning,” McCarthy, a highly regarded British environmental journalist, notes the difference between extinction at the national level and extinction at the local level. He observes that among birds “there were only two national extinctions in Britain in the post-war period,” the red-backed shrike and the wryneck.

Un anno dopo la scadenza della moratoria biennale sui tre pesticidi neonicotinoidi, l’Efsa, Autorità europea per la sicurezza alimentare, ha emesso un parere sfavorevole su due dei tre prodotti chimici. Clothianidin, imidacloprid (entrambi della Bayer) pongono gravi rischi per le api. Sul terzo, il thiamethoxam (Syngenta), si è ancora in attesa della relazione che dovrebbe però confermare anche in questo caso lo “sconsiglio”.