Herbiciden

A former Environmental Protection Agency official may not be able to escape testifying about his alleged role in helping Monsanto Co. suppress inquiries into whether its Roundup weed killer causes cancer. A manager who left the agency’s pesticide division last year has become a central figure in more than 20 lawsuits in the U.S. accusing the company of failing to warn consumers and regulators of the risk that its glyphosate-based herbicide can cause non-Hodgkin’s lymphoma.

At least 45 lochs around Scotland’s coast have been contaminated by toxic pesticides from fish farms that can harm wildlife and human health, according to data released by the Scottish Environment Protection Agency (Sepa). Levels of chemicals used to kill the sea lice that plague caged salmon have breached environmental safety limits more than a hundred times in the last 10 years. The chemicals have been discharged by 70 fish farms run by seven companies.

Pesticide residue from rice polders and nutrient discharge from urban settlements are aggravating the pollution of Vembanad Lake, playing havoc with the fragile wetland ecosystem and jeopardising its tourism potential. A study conducted by the Regional Agricultural Research Station (RARS), Kumarakom, under Kerala Agricultural University (KAU), has reported a high level of eutrophication of the lake, a Ramsar site and the hub of backwater tourism in Kerala. Data collected by the environmental surveillance centre at RARS indicate that the organic pollution of the lake is getting worse.

Sir John Beddington is Senior Advisor and Professor of Natural Resources Management at the Oxford Martin School in Oxford, UK. He also belongs to the Central Team of the Oxford Martin Commission for Future Generations (OMC) and is former Chief Scientific Adviser to the British government and Head of the Government Office for Science.

Die Zahl der Singvögel im Vogtland geht zurück. Das sagt Michael Thoß, Naturschützer und Ornithologe aus Auerbach. Damit bestätigt er Aussagen, die die Teilnehmer der Vogelhaus-Aktion von "Freie Presse" gemacht haben. Sie haben beobachtet, dass weniger Gäste an die Futterstellen fliegen. Ursachen für den fehlenden Flugbetrieb hat der Ornithologe mehrere ausgemacht: "Grünfinken sind seit zwei Jahren von einer Pilzkrankheit, dem Gelben Kropf oder Gelben Knopf betroffen, an der viele Tiere sterben." Die Pilzerkrankung zerfrisst die Rachenschleimhaut.

Farmland covers 45% of the EU’s land area and these habitats are rocketing towards biodiversity oblivion. We cannot afford to mince our words here, the situation is very serious and requires both monitoring and action. The European Bird Census Council (EBCC), where many BirdLife partners play a key role, has been coordinating the collation of data on more than 160 common bird species across 28 European countries. The data collected is fundamental to understanding the future of European biodiversity – and the forecasts are alarming.

Agricultural intensification is an important anthropogenic perturbation of the environment. It is characterized by a specialization of the production process, which results in a switch from diverse plantations to large monocultures. Agricultural intensification is also associated with increased use of pesticides, harvest frequency, and density of plantations in cultivated areas. This type of practice is linked to the population decline of several bird species in Europe and North America.

One of the sure signs of spring — monarch butterflies (Danaus plexippus) — might be harder to find this year, scientists announced this week. The number of monarch butterflies at winter breeding grounds in Mexico is around 78 million , down from 100 million a year before. The figures illustrate the striking decline in the migrating butterflies' population in past two decades. Today, monarchs number less than one-tenth of their population in 1996, when scientists estimated a whopping 1 billion of the insects.

We examined the presence of pesticides and nutrients in water and sediment as indicators of habitat quality and assessed the bioaccumulation of pesticides in the tissue of two native amphibian species Pseudacris maculata (chorus frogs) and Lithobates pipiens (leopard frogs) at six wetlands (3 restored and 3 reference) in Iowa, USA. Restored wetlands are positioned on the landscape to receive subsurface tile drainage water while reference wetlands receive water from overland run-off and shallow groundwater sources.