An ecosystem consists of all interactions within in a given area, along with interactions between their physical environment.

I would say that an ecosystem consists of all interactions within a community of organisms in a given area, along with interactions between their physical environment. It is however difficult to define the spatial boundaries of an ecosystem, and the definition is simplified somewhat to allow for a conceptual understanding. Consider for example how migrant birds may enter a particular region in Africa from Europe during the European winter. What is the spatial bounds of the ecosystem then, considering that they have imported energy sourced in Europe to Africa?

Where is the data? ? and graph