Abstract. The decreasing availability of water caused by depletion and climate change combined with a growing world population requires the productive use of water now and in the future. The young researcher group "AgroHyd" at the Leibniz-Institute for Agricultural Engineering Potsdam-Bornim (ATB) is currently modeling the water demand for agricultural processes at the farm scale and developing indicators to link the hydrological and agricultural perspectives. The aim of the group is to increase productivity in agriculture by raising water productivity in plant production and livestock farming. The effects of various agronomic measures, individual and in combination, on water productivity are assessed using several indicators. Scenarios of agricultural measures, climate and diets are used to test to what extent the water demand for food production will increase due to growing global change in different regions of the world.

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In a 41-year old tertipara with twin pregnancy, foetal chromosome analysis showed a boy without abnormal findings, 46, XY, and a boy with free trisomy 21. Abortion of the abnormal twin was performed in the 23rd week of pregnancy via sectio parva. Despite preoperative onset of tocolysis and ultimately performed circular suture of the cervix, premature rupture of the membranes occurred in the 28th pregnancy week, followed by spontaneous birth of the second twin weighing 1010 g. Raising of the premature baby did not present any special problems.

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