A canopy is the upper layer of a forest or any ecosystem consisting of the highest branches, leaves, and foliage of trees. It plays a crucial role in the ecosystem by providing habitat for various organisms, regulating temperature and humidity, and absorbing and storing carbon dioxide. Canopy research focuses on studying the structure, biodiversity, and functioning of this vital layer in order to understand its importance in maintaining ecosystem health and functioning. Researchers in this area may study canopy species composition, canopy height and density, light interception, nutrient cycling, and the impacts of environmental changes on canopy ecosystems.