نتایج جستجو برای: alpine flora

تعداد نتایج: 30481  

Journal: :Transactions of the Botanical Society of Edinburgh 1908

Journal: :Transactions of the Botanical Society of Edinburgh 1879

2011
Elvira Hörandl Christoph Dobeš Jan Suda Petr Vít Tomáš Urfus Eva M. Temsch Anne-Caroline Cosendai Johanna Wagner Ursula Ladinig

BACKGROUND AND AIMS High alpine environments are characterized by short growing seasons, stochastic climatic conditions and fluctuating pollinator visits. These conditions are rather unfavourable for sexual reproduction of flowering plants. Apomixis, asexual reproduction via seed, provides reproductive assurance without the need of pollinators and potentially accelerates seed development. There...

2004

The Alps still comprise the largest natural and semi-natural environments in Central Europe, but even the remotest alpine regions may face drastic changes due to human-induced climate warming. The glaciers of the Alps respond to the ongoing temperature increase of about 1-2°C since the 19th century with a drastic shrinkage. The high mountain vegetation is generally considered to be particularly...

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