Beleid en debat

Iconic mayfly populations have declined by as much as 84 percent

The emergence of Hexagenia limbata mayflies, throughout the Great Lakes and parts of the mid-Atlantic region, is nearly a religious event in angling circles. Each year in early June, these enormous mayflies blanket the landscape, emerging by the billions each night, smothering waterways, riverbanks, roadways and more with thousands of tons of trout-candy biomass. Not long ago, these historic and essential emergences were almost wiped out. By 1970, Hexagenia were gone from large swaths of the Midwest.

Het is de EU de afgelopen 10 jaar niet gelukt risico’s van bestrijdingsmiddelen te beperken

Pesticiden kunnen schadelijk zijn voor mens en milieu, maar het is de Europese Unie de afgelopen tien jaar nauwelijks gelukt de risico’s terug te dringen. Ook schiet de handhaving ernstig tekort. Boerenbedrijven in overtreding worden nauwelijks of niet beboet. Dat concludeert de Europese Rekenkamer in een rapport. Het onderzoek van de Rekenkamer vond plaats in Nederland, Frankrijk en Litouwen.

Germany's breeding bird population in significant decline

The breeding bird population in Germany declined by around 14 million or eight percent over the period between 1992 and 2016, the Federal Agency for Nature Conservation (BfN) said on Wednesday. The "significant decline" in the number of native birds in meadows, pastures and fields has been continuing, according to an evaluation of thousands of data sets by the agency. "In the open agricultural landscapes, the population of breeding pairs has declined by about two million over a quarter of a century," BfN President Beate Jessel said.

Bayer attempts to discredit peer-reviewed study showing its products caused a Japan fishery to collapse

The May 2019 newsletter of the Saitama Ecosystem Conservation Society describes how, before the introduction of neonicotinoids in the 1990s, numberless brilliant red akiakane or autumn darter dragonflies could be seen around rice fields in the fall. Experiments by Japanese dragonfly expert Tetsuyuki Ueda of Ishikawa Prefectural University showed how the pesticides reduced the number of surviving dragonfly nymphs to a small fraction, and that the chemicals persist for years in the soil of rice paddy fields.

Rosemary A. Mason: The sixth mass extinction and chemicals in the environment: our environmental deficit is now beyond nature’s ability to regenerate

Two papers about the future of the planet appeared within a month of each other (June/July 2015): "Accelerated modern human-induced species losses: Entering the sixth mass extinction" was the first. The 6 authors calculated the average rate of vertebrate losses over the last century and compared it with the background rate of losses. They estimated it to be up to 114 times the background rate and asserted that this rate of losses of biodiversity indicated that a sixth mass extinction is already under way.

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.

EU doet landbouwgif thiacloprid in de ban

Het in de landbouw gebruikte bestrijdingsmiddel thiacloprid wordt verboden in de EU omdat het risico’s voor de gezondheid en het milieu met zich meebrengt. De Europese Commissie maakte maandag officieel bekend de vergunning niet te verlengen, op basis van een wetenschappelijk advies van de Europese Autoriteit voor Voedselveiligheid (EFSA).

Lees verder in Trouw van 20 januari 2020:…

Oligotrophic bacterium Hymenobacter latericoloratus CGMCC 16346 degrades the neonicotinoid imidacloprid in surface water

The intensive and extensive application of imidacloprid in agriculture has resulted in water pollution and risks to aquatic invertebrates. However, pure bacteria remediation of imidacloprid in surface water environments has not been studied. Here, we isolated an imidacloprid-degrading bacterium from a water environment, examined its imidacloprid degradation in pure culture and surface water, sequenced its genome, and compared its Clusters of Orthologous Groups (COG) protein categorization with that for another imidacloprid-degrading bacterium.

In 2018 was imidacloprid in de glastuinbouw nog steeds een probleemstof

Het Hoogheemraadschap (HH) Delfland heeft een meetnet om de waterkwaliteit van het glastuinbouwgebied te monitoren: er zijn 23 meetlocaties in het meetnet voor de glastuinbouw, namelijk op 3 referentielocaties buiten het glastuin-bouwgebied, 5 boezemlocaties en 15 locaties in glastuinbouwgebied. Op deze locaties zijn elke maand bestrijdingsmiddelen gemeten.

IUCN's new Red List reports alarming decline in global freshwater fish species

Freshwater fish species globally are under grave threat according to the latest edition of the International Union for Conservation of Nature (IUCN)’s Red List. In fact, over half of Japan’s endemic freshwater fishes and more than a third of freshwater fishes in Mexico were threatened with extinction, the list of threatended species released on July 18, 2019, said.