The existence and importance of nano- and even smaller plankton was only discovered during the s, but they are thought to make up the largest proportion of all plankton in number and diversity. The microplankton and smaller groups are microorganisms and operate at low Reynolds numberswhere the viscosity of water is much more important than its mass or inertia. Local abundance varies horizontally, vertically and seasonally.
This water body can include marine and fresh water bodies.
The living beings includes animals, fishes, snails, reptilesplants and microbial flora in the sea and oceans. All the human waste, rainfall water, rivers etc.
So in some way these aquatic bodies act as dump yards beyond limit. But from the time life emerged on earth, there has been a balanced aquatic ecosystem. Due to pollution, petroleum refineries, industrial dump, the aquatic ecosystem is losing its health.
Currently the aquatic system is highly polluted in some areas and also in grave danger of extinction. If we continue this level of exploitation, then more of the ecosystem gets damaged and can get extinct. What is aquatic ecosystem Aquatic ecosystem: Aquatic ecosystem comprises the living organisms in the aquatic world.
There is a food chain within every aquatic ecosystem. This chain is a way of mutual existence of living beings. It include microbes, plantsfishes, animals, insects, reptilesmollusks etc. Michigan University Importance of aquatic ecosystem: Aquatic ecosystem is the biggest source of fish which vital food for humans.
Fish food is rich in vitamins especially preformed vitamin A. This fish meat is also a good diet as they are subjected to minimal artificial chemicals and processed foods.
Further they are free from any infections and diseases compared to other meat producing animals and fish grown in fish ponds. Besides fish, humans also consume prawns, oysters, snails, crabs etc.
From fish diet one can even get omega fatty oils which are good for cardiac health. Due to global warming the scientist suspect that land area for cultivation will go down as ocean levels rise. Then the only source of food for humans will be fish and other marine foods.
So they are even exploring ways how to sustain life by depending on marine food in future. Marine aquatic system is also a great source of medicines.
We use them on regular basis for promoting life span and get rid of diseases. Calcium is the key supplement for bone strength.Phytoplankton are tiny photosynthetic organisms that are the major producers of marine life. They form the foundation of the food web for most marine life.
They are responsible for half of the photosynthetic activity on earth, making them important to both their local and the global ecosystems.
6 The Algae of the Kawartha Lakes Figure 2. Kawartha lake food web.
Algae are a primary source of energy for the lake ecosystem and can support all organisms above them. Protists are generally microscopic organisms — most with a single cell — that are not bacteria, animals, plants or fungi. Every living organism on earth depends on and interacts with other living and non-living things to stay alive.
Organisms depend on other organisms for food for example, and also depend on their environment for protection and a place to stay. These organisms also release significant quantities of an important atmospheric gas known as dimethyl sulfide, an oxidized sulfate that plays a role in cloud formation.
Most phytoplankton are unable to be seen with the naked eye but may create colored patches visible on water surfaces when present in high enough numbers. Aquatic ecosystem: Aquatic ecosystem comprises the living organisms in the aquatic world.
There is a food chain within every aquatic ecosystem. This chain is a way of mutual existence of living beings.