The Dutch dune area has dried out at a number of locations as a result of water extraction and drainage of adjacent polder areas. Wildlife managers are searching for favourable locations to restore the natural environment to the original wet dune valleys. Chris Bakker has compiled a number of characteristics that a dune valley must satisfy for a successful restoration project to be carried out.
Chris Bakker investigated dune valleys in Zuid Kenemerland National Park. He discovered that the restoration of plant growth in nutrient-poor, wet dune valleys set off a chain reaction with respect to changes in the quantity of dead plants, responses of individual plants and the species composition of the vegetation.
Changes in the water level were found to have a direct and major impact on the ecosystems. First of all plants submerged by water for the first time die. Then the increased water level influences the plant growth in three different ways: Firstly a high water level is highly favourable for the germination and establishment of plants from wet dune valleys. Secondly at some locations seepage water that is rich in chalk and iron returns to the surface. As a result of this the nutrient phosphate is stored in chemical compounds that cannot be accessed by the majority of plants. Therefore only typical dune plants, which use phosphate very sparingly, can grow at these locations. Finally the water can easily transport seeds from other populations, thus facilitating the spread of species.
Dr. Chris Bakker | alfa
Litter is present throughout the world’s oceans: 1,220 species affected
27.03.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
International network connects experimental research in European waters
21.03.2017 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
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29.03.2017 | Materials Sciences
29.03.2017 | Physics and Astronomy
29.03.2017 | Earth Sciences