Facts: - death place: copenhagen - doctoral students: johannes iversen carsten olsen - signature: raunkiaer-signature . jpg - known for: raunkir life forms , raunkir 's frequency law - caption: c. 1930 - work institutions: university of copenhagen - death date: 1938 - field: plant ecology , botany - doctoral advisor: eugen warming - author abbrev bot: raunk . - birth date: 1860 - name: christen c. raunkir - image size: 200px - nationality: danish - image: raunkiaer-christen-c1930 . jpg - birth place: lyhne , denmark - alma mater: university of copenhagen Based on these bullet points, write a short biography describing the life of christen c. raunkir .
The answer to this question is:
christen christensen raunkir -lrb- 29 march 1860 -- 11 march 1938 -rrb- was a danish botanist , who was a pioneer of plant ecology .he is mainly remembered for his scheme of plant strategies to survive an unfavourable season -lrb- '' life forms '' -rrb- and his demonstration that the relative abundance of strategies in floras largely corresponded to the earth 's climatic zones .this scheme , the raunkir system , is still widely used today and may be seen as a precursor of modern plant strategy schemes , e.g. j. philip grime 's csr system .