Carsten Olsen: Difference between revisions

'''Carsten Erik Olsen''' ([[March 1]], [[1891]] – [[August 19]], [[1974]]) was a Danish plant ecologist and plant physiologist, who pioneered the study of [[plant nutrition]] in soils of different [[pH]]. He was born in [[Copenhagen]] and began studies of [[botany]] at the [[University of Copenhagen]] in 1910, at first with professor [[Eugenius Warming]], then with professor [[Christen Raunkiær]]. His doctoral dissertation (1921) was on the influence of soil pH on the natural distribution of plants. He was then employed by the [[Carlsberg Laboratory]] as an assistant to the chemist [[S. P. L. Sørensen]], later in his own lab. There, he worked on plant uptake of ions, especially [[iron]], [[nitrogen fixation]] and [[calcicolous plants]].