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International Conference on Group Theory

Published 13. March 2012
Bielefeld University honours Professor Bernd Fischer's 75th birthday

Today (12 March), Bielefeld University is welcoming 180 mathematicians from 15 different countries to the 'Groups 2012' conference. They have been invited by the Bielefeld Collaborative Research Centre 701 'Spectral Structures and Topological Methods in Mathematics' and the Faculty of Mathematics to honour the 75th birthday of Professor em. Dr. Dr. h.c. Bernd Fischer, one of the first and most distinguished professors at the Faculty. Until Friday (16th March), the participants will be discussing the use of groups in different parts of mathematics and presenting the latest developments on the structure theory of groups. The conference is being held in English.[Weiterlesen]
Gesendet von MBorchert in General

Fertilization by invasive species threatens nutrient-poor ecosystems

Published 13. March 2012

Biologists at Bielefeld University have developed a new method for quantifying the effect of non-native species on ecosystem functioning

Invasive species are prolific non-native plants or animals that, when introduced to an ecosystem, may imbalance the system and disrupt its natural functioning. Biologists at Bielefeld University in the team of Junior Professor Dr. Christiane Werner in cooperation with the University of Lisbon have developed non-invasive method for quantifying the spatial impact of such exotic species on the ecosystems which they invade. They can estimate whether native plants in the neighbourhood of invasive species incorporate the nitrogen fixed by the latter. The biologists examined the Sydney Golden Wattle (Acacia longifolia), an Australian shrub that has established itself in Mediterranean climates worldwide. They found that the invasive species threatens native ecosystems not only through its prolific growth but also by fertilizing the surrounding soil with nitrogen – this effect markedly extended beyond the area occupied by the invader. This innovative method (called 15N isoscapes) is being published today (13 March) in the renowned journal "Ecology Letters".[Weiterlesen]
Gesendet von JHeeren in General

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