Sir Arthur Tansley was the leading figure in ecology for the first half of the 20th century, founding the field, and forming its first professional societies. He was the first President of the British Ecological Society and the first chair of the Field Studies Council. His work as a botanist is considered seminal and he is recognized as one of the giants of ecology throughout the world. Ecology underpins the principles and practices of modern conservation and the maintenance of biodiversity. It...