In the Oostvaardersplassen an otter has been seen for the first time. The animal was observed this week with a camera. According to the Forestry Department its presence is a tribute to the water quality in the Flevoland nature reserve.
Probably the animal came from the Weerribben, where ten years ago otters were set free. According to the Forestry Department, the arrival of the otter in Flevoland is due to the Ecological Network, a network of connections between natural areas.
In the Netherlands, about sixty otters live, especially in North-Western Overijssel and South-East Friesland.
Year after year, billions of birds die because they have flown against windows, cars, or airplanes.
Dutch photographer André van Soest has photographed some of those dead birds. To honour their beauty; and to get people to pay attention to this problem.
Snails in IJsselmeerpolders [Dutch Flevoland province] evolve at high-speed
In the eyes of people, snails may be very slow-moving; however, they evolve rapidly. This Evolutionary biologistMenno Schilthuizen of Naturalis Biodiversity Center discovered this, based on the IJsselmeer polders since they were reclaimed from the Ijsselmeer lake.
He calculated that after 50 years, snails in forests had evolved at a four times higher frequency certain colour forms than snails in grassland. This is one of the highest rates ever recorded in animals in the wild. The study will appear in the journal Heredity, the publication is already online.
Among evolutionary biologists, the grove snail Cepaea nemoralis is almost as famous as the Darwin finch. The snails’ shells come in a rich range of hues, under the influence of evolution depending on the environment where the snails live. So, lighter colored snails in full sun are less likely to overheat and so they survive better in grassland than in woodland. But how strong this natural selection is and therefore how quickly differences between forest and open terrain evolve, has remained unclear for a long time.
ALMERE – A beaver in the night from Wednesday to Thursday caused quite some commotion in Almere.
Law enforcement services shot into action en masse, because policemen mistook the swimming animal for a fugitive burglar.
According to a police spokesman the cops reacted to a burglar alarm at a business and, when they arrived, they heard a splash. One of them also thought he saw a head in the water.
Both the fire department and a police helicopter were summoned to catch the ‘burglar’. Only after using an infrared camera it became clear that the law enforcers were not pursuing a burglar, but an adult-sized beaver.
December 2012. A study, run by Scottish Natural Heritage (SNH), has confirmed that approximately 146 beavers are presently living in the wild in rivers in Tayside. Surveys from May and July 2012, along with long-term observations, found that there are about 40 groups of beavers and seven dams in the Tay catchment. The beavers were found in the Tayside rivers and lochs stretching from Kinloch Rannoch, Kenmore and beyond Crieff in the west, to Forfar, Perth and Bridge of Earn in the East: here.