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aquatic ecosytem |
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by sujata kattel | 28-08-2020 10:32 0 |
AQUATIC ECOSYSTEM Aquatic ecosystem is an ecosystem in the body of water. They are the living things that depend on the water for survival, such as fish, plants, and micro-organisms. They are very fragile and easily disturbed by the pollution. It includes ocean, lakes, river, wetland, streams and estuaries. It includes a group of interacting organisms which are dependent on one another and their water environment for nutrients and shelter. There are two types of aquatic ecosystem: marine ecosystem and fresh water ecosystem. 1. Fresh water aquatic ecosystem They cover only a small portion of earth nearly 0.8 per cent. Freshwater involves lakes, ponds, rivers and streams, wetlands, swamp, bog and temporary pools. Freshwater habitats are classified into lotic and lentic habitats. Water bodies such as lakes, ponds, pools, bogs, and other reservoirs are standing water and known as lentic habitats. Whereas lotic habitats represent flowing water bodies such as rivers, streams. 2. Marine ecosystem Marine ecosystem covers the largest surface area of the earth. Two third of earth is covered by water and they constitute of oceans, seas, intertidal zone, reefs, seabed, estuaries, hydrothermal vents and rock pools. Each life form is unique and native to its habitat. This is because they have adaptations according to their habitat. In the case of aquatic animals, they can¡¯t survive outside of water. Exceptional cases are still there which shows another example of adaptations (e.g. mudskippers). The marine ecosystem is more concentrated with salts which make it difficult for freshwater organisms to live in. Also, marine animals cannot survive in freshwater. Their body is adapted to live in saltwater; if they are placed in less salty water, their body will swell (osmosis). ¡¤ Physical alterations include changes in water temperature, water flow and light availability. ¡¤ Chemical alterations include changes in the loading rates of bio-stimulatory nutrients, oxygen consuming materials, and toxins. ¡¤ Biological alterations include over-harvesting of commercial species and the introduction of exotic species. |
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4 Comments
Greetings sujata
I hope you are doing well
Very well written on aquatic ecosystem
Thank you so much for this report
Keep writing
Green Cheers
Regards
Asmita Gaire
Posted 23-09-2020 14:32
Hi Sujata
Thanks for your sharing your report on aquatic ecosystem.
Keep writing.
Warm regards,
Posted 30-08-2020 20:49
Greetings
Thanks for sharing this report about aquatic ecosystem.
Keep writing! !!
Regards
Dolma
Posted 30-08-2020 19:20
great thanks for sharing... keep on going
Posted 29-08-2020 01:17