2011-07-15 Vienna XXII. district, Lobau heath - Heisslnde (Danube National Park, 153 msm Quadrant 7865/1).German name: Grau-PappelShedding their leaves untypically early due to dry weather conditions - something which I haven't seen happen since 2008 (which was dry too, while 2009 and 2010 were very wet).