Aquatic Ecosystems : An aquatic ecosystem is an ecosystem in a river. Areas of creatures that are dependent on each other and on their atmosphere exist in aquatic ecosystems. The two main types of ecosystem are marine and fresh water ecosystems.
Ecosystem is defined as a biological community of interacting organisms and their physical environment. In other words, it is simply the system or way, in which the components of nature interact with each other. This system has different functionalities according to its nature that is, either landform or aquatic.