Carl Troll (* 24 December 1899 in Gabersee, † 21 July 1975 in Bonn), was a German geographer, brother of botanist Wilhelm Troll December 24 is the 358th day of the year in the Gregorian Calendar (359th in leap years). ... 1899 was a common year starting on Sunday (see link for calendar). ... July 21 is the 202nd day (203rd in leap years) of the year in the Gregorian Calendar, with 163 days remaining. ... 1975 was a common year starting on Wednesday (the link is to a full 1975 calendar). ... Bonn is a city in Germany (Population (2004 est): 313,605 ; the 19th largest city in Germany), in the Bundesland of North Rhine-Westphalia, located about 20 kilometres south of Cologne on the river Rhine. ...

From 1919 until 1922 Troll studied amongst other biology, chemistry, geology, geography and physics at the Universität in München. In 1921 he obtained his doctorate in botany and in 1925 his habilitation in geography. Between 1922 and 1927 he worked as assistant at the Geography Institute in Munich. Troll was engaged in research in the ecology and geography of mountainous lands: between 1926 and 1929 went in a research journey throughout South American Andean countries where he visited northern Chile, Bolivia, Peru, Ecuador, Colombia, and Panama. In 1933 and 1934 his research interests took him to East and South Africa; in 1937 Troll was in Ethiopia; and in 1954 he visited Mexico. 1919 was a common year starting on Wednesday (see link for calendar). ... 1922 was a common year starting on Sunday (see link for calendar). ... Biology is the science of life (from the Greek words bios = life and logos = reasoned account). ... Chemistry (in Greek: χημεία) is the science of matter and its interactions with energy and itself (see physics, biology). ... Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason)) is the science and study of the Earth, its composition, structure, physical properties, history, and the processes that shape it. ... Wikibooks Wikiversity has more about this subject: School of Physics sci. ... With approximately 48,000 students, the Ludwig-Maximilians-University Munich (German: Ludwig-Maximilians-Universität München or LMU) is one of the largest universities in Germany. ... 1921 was a common year starting on Saturday (see link for calendar). ... Botany is the scientific study of plant life. ... 1925 was a common year starting on Thursday (link will take you to calendar). ... Habilitation is a term used within the university system in Germany, Austria, and some other European countries such as the German-speaking part of Switzerland, in Poland, the Czech Republic, Slovakia, Hungary and Slovenia. ... 1927 was a common year starting on Saturday (link will take you to calendar). ... Munich: Frauenkirche and Town Hall steeple Munich (German: München pronunciation) is the state capital of the German Bundesland of Bavaria. ... 1926 was a common year starting on Friday (link will take you to calendar). ... 1929 was a common year starting on Tuesday (link will take you to calendar). ... South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ... Note that the geology in this article currently reflects views from the first decade of the 20th century. ... The Republic of Chile is a country in South America occupying a long coastal strip between the Andes mountains and the Pacific Ocean. ... 1933 was a common year starting on Sunday (link will take you to calendar). ... 1934 was a common year starting on Monday (link will take you to calendar). ... 1937 was a common year starting on Friday (link will take you to calendar). ... 1954 was a common year starting on Friday (link will take you to calendar). ...

In 1930 he became professor of colonial and overseas geography in Berlin. In 1938 professor of geography in Bonn. Troll, who utilised aerial photographs in his research, coined the term Landscape ecology in 1939. He developed this terminology and many early concepts of landscape ecology and of high mountain ecology and geography as part of his early work applying aeriual photographs interpretation to studies of interactions between environment and vegetation and from his research travels in the mountainous regions of Asia, Africa and South America, as well as his native Europe. He developed seasonal climatic charts and three-dimensional climatic classification from hydrological, biological and economical data. 1930 is a common year starting on Wednesday. ... Berlin (pronounced: , German ) is the capital of Germany and its largest city, with 3,426,000 inhabitants (as of January 2005); down from 4. ... 1938 was a common year starting on Saturday (link will take you to calendar). ... Landscape ecology is a subdiscipline of ecology and geography that is interested in the spatial arrangement of elements in the landscape (such as fields, hedgerows, woodlots, rivers or towns) and how their distribution affects the distribution and flow of energy and individuals in the environment (which, in turn, may influence... 1939 was a common year starting on Sunday (link will take you to calendar). ... Landscape ecology is a subdiscipline of ecology and geography that is interested in the spatial arrangement of elements in the landscape (such as fields, hedgerows, woodlots, rivers or towns) and how their distribution affects the distribution and flow of energy and individuals in the environment (which, in turn, may influence... Aerial photography is the taking of photographs from above with a camera mounted on an aircraft, balloon, rocket, kite or similar vehicle. ...

Carl Troll was president of the IGU from 1960 to 1964 The International Geographical Union (IGU) promotes the study of geographical problems; initiates and coordinates geographical research requiring international cooperation; promotes scientific discussion and publication; provides for the participation of geographers in the work of relevant international organizations; facilitates the collection and diffusion of geographical data and documentation in and among... 1960 was a leap year starting on Friday (link will take you to calendar). ... 1964 was a leap year starting on Wednesday (link will take you to calendar). ...

References

• Free translation from Carl Troll, German Wikipedia
• Curriculum Vitae des Geographischen Instituts Bonn (http://www.giub.uni-bonn.de/archiv/Geschichte/welcome.html), 2003.