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University of Graz News Blüten wie Heu

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Wednesday, 23 June 2021

Blüten wie Heu

Bunte Pracht in den Karpaten: ForscherInnen der Uni Graz wollen diese Artenvielfalt auch auf heimischen Wiesen wiederherstellen. Foto: Uni Graz/Magnes

Bunte Pracht in den Karpaten: ForscherInnen der Uni Graz wollen diese Artenvielfalt auch auf heimischen Wiesen wiederherstellen. Foto: Uni Graz/Magnes

BiologInnen der Uni Graz bringen Artenvielfalt auf Wiesen zurück

Der Duft von frischem Heu ist ein seltener Genuss geworden. Die Mahd wird nämlich rasch in Siloballen gepackt – und zwar schon vor dem Aufblühen der Gräser. „Dann ist das Futter für die Viehhaltung am proteinreichsten“, erklärt Martin Magnes, Biologe an der Universität Graz. Allerdings geht so auch die Artenvielfalt verloren: Die zu früh geschnittenen Pflanzen können sich nicht aussäen, ohne Blüten finden Insekten zu wenig Nahrung, damit wiederum fällt eine wichtige Futterquelle für Vögel weg. „Außerdem finden Vögel und Wildbienen auf den getrimmten Agrarflächen weniger Brutmöglichkeiten“, ergänzt der Wissenschafter.

Um auch in Mitteleuropa wieder artenreiche Wiesen und vielfältige Lebensräume zu schaffen, untersucht Magnes mit einem internationalen Team traditionell bewirtschaftetes Grünland in den Karpaten. „Dort wird mit hofeigenem Festmist gedüngt, die erste Mahd erfolgt spät, dafür werden die Wiesen im Frühjahr kurz beweidet“, zählt er Praktiken auf, die auch bei uns zum Einsatz kommen könnten. „Die artenreichen Flächen mit Gräsern und Kräutern liefern nicht nur Insekten Nahrung, sondern auch dem Vieh ein nährstoffreicheres und gesundes Futter“, ergänzt er. Über ein Crowdfunding-Projekt soll nun eine weitere Forschungsexpedition in wenig untersuchte Regionen finanziert werden. „Wir erwarten uns konkrete Hinweise, wie das verarmte Grünland in Mitteleuropa wieder optimal bewirtschaftet werden könnte“, so der Biologe.

 

created by Dagmar Eklaude

Related news

Career Booster: How the Research Careers Campus supports researchers

They are innovative, creative and productive – researchers who have not yet been appointed to a professorship make a massive contribution to a university’s research output. To provide them with even better support on their career path, the University of Graz has established the Research Careers Campus. The official launch took place on 22 April 2026 with a ‘festival’.

Greenery on the rise: over 500 new flowers, perennials and shrubs on campus

Bright blooms and fresh greenery make our hearts beat faster in spring. But it is not just us humans who delight in this colourful growth. For many animals, this splendour provides, above all, food and habitat. There has recently been an increase in this on the University of Graz campus. More than 500 native flowers, perennials and shrubs have been planted on strips of fallow land around Universitätsplatz 2.

Around the world in eight stops: the Long Night of Research at the University of Graz

On 24 April from 5 pm, you can take a short trip around the globe at the University of Graz, discovering pecularities of foreign countries or new local features in the entrance hall of the University Library. The itinerary takes you through introduced animal species, political attitudes and the omnipotence of algorithms. There will also be a programme in the historic reading hall, as well as at the UniGraz@Museum and the University Archive.

Building biological bridges: Chemist discovers an ecological tool for the pharmaceutical industry

Building a relationship on a solid foundation is also important in chemistry. To produce medicines, disinfectants or plant protection products, stable bonds between carbon atoms must be formed. Conventional chemical methods rely on environmentally harmful reagents and solvents to carry out the desired reaction. This process also produces unusable by-products. Chemist Lilla Gal has discovered an enzyme that enables the same process to take place efficiently and sustainably. The results of her research were recently published in the prestigious journal Angewandte Chemie.

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