The term 'Ecosystem' was first used by-

Correct option is D

The term "ecosystem" was first coined by Sir Arthur George Tansley in 1935. Tansley, a British ecologist, introduced this term to describe the complex interactions between biotic (living) and abiotic (non-living) components of nature. He emphasized the importance of energy flow and material cycling within ecosystems, laying the foundation for modern ecological studies. His work significantly contributed to plant ecology and ecological conservation.

A.G. Tansley was a pioneer in vegetation science and ecology. He stressed that ecosystems are dynamic systems and highlighted the need for a holistic approach in studying nature. His concept of an ecosystem provided a scientific framework for understanding the structure and function of the environment. His work remains fundamental in modern ecological research, influencing environmental policies and conservation efforts.

• (a) Raymond Lindeman – Known for trophic dynamics and energy flow in ecosystems, but he did not coin the term "ecosystem."
• (b) E.P. Odum – Referred to as the "father of modern ecology", he expanded on the concept of ecosystems but did not introduce the term.
• (c) F.R. Fosberg – A noted botanist and geographer, he specialized in island ecology but was not associated with the term "ecosystem."