The Antarctic region comprises the continent and surrounding sea south of the Antarctic Convergence, where cold Antarctic upper water sinks and mixes with warmer sub-Antarctic water. The continent, nearly centered on the South Geographic Pole, is isolated by the Southern Ocean from other land masses.
What is Antarctica’s ecosystem?
Antarctica is a polar desert. Terrestrial life is limited to the very small. There are no trees or shrubs, so vegetation is mainly mosses, lichens and algae.
How many ecosystems are in Antarctica?
The Antarctic realm is one of eight terrestrial biogeographic realms. The ecosystem includes Antarctica and several island groups in the southern Atlantic and Indian oceans.
|Antarctic tundra v t e|
|Central South Antarctic Peninsula tundra||Antarctic Peninsula|
|Dronning Maud Land tundra||Queen Maud Land|
Why is the Antarctic ecosystem important?
Antarctica is important for science because of its profound effect on the Earth’s climate and ocean systems. Locked in its four kilometre-thick ice sheet is a unique record of what our planet’s climate was like over the past one million years. … However, Antarctica is fragile and increasingly vulnerable.
What are Antarctic decomposers?
Bacteria, fungi and some worms all act as decomposers in this terrestrial environment, breaking down dead plants and animals in order to use their nutrients.
What are the ecosystems?
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. … Abiotic factors include rocks, temperature, and humidity.
What is Antarctica biodiversity?
The Antarctic continent is isolated from the rest of the world by the Southern Ocean and successful natural colonization events are rare. As a result, terrestrial biodiversity is low and comprised of simple plants (e.g. mosses, lichens, liverworts) and animals (e.g. flies, mites and springtails).
Which is a correct food chain in the Antarctic ecosystem?
In the Antarctic food chain krill are primary consumers and baleen whales, penguins, seals and many kinds of fish and other birds are secondary consumers when feeding on krill. Many animals are a mixture of primary, secondary, tertiary (3rd) and quaternary (4th) consumers as they eat a variety of prey.
How do penguins survive in Antarctica?
Penguins have to keep high body temperatures to remain active. They have thick skin and lots of fat (blubber) under their skin to keep warm in cold weather. … Waterproofing is critical to penguins’ survival in water, Antarctic seas may be as cold as -2.2°C (28°F) and rarely get above +2°C (35.6°F).
Environmental impacts in Antarctica occur at a range of scales. Global warming, ozone depletion and global contamination have planet-wide impacts. These affect Antarctica at the largest scale. Fishing and hunting have more localised impacts, but still have the potential to cause region-wide effects.
What resources can be found in Antarctica?
Scientific expeditions have found valuable minerals in some of these Antarctic areas, including antimony, chromium, copper, gold, lead, molybdenum, tin, uranium, and zinc. None approach a grade or size warranting economic interest. Also noneconomic are the very large deposits of coal and sedimentary iron.
Why Antarctica is called the continent of science?
Antarctica is called the continent of science because it is inhabited primarily by research scientists.
What are decomposers in the Arctic ecosystem?
The decomposers found in the Arctic tundra are bacteria, which are microorganisms, and fungi, which we previously mentioned as a member of the lichen partnership. Both bacteria and fungi work to break down dead and decaying matter, digesting and absorbing the nutrients in the process.
What plants are in Antarctica?
There are no trees or shrubs, and only two species of flowering plants are found: Antarctic hair grass (Deschampsia antarctica) and Antarctic pearlwort (Colobanthus quitensis). These occur on the South Orkney Islands, the South Shetland Islands and along the western Antarctic Peninsula.
What are some decomposers in the Arctic Ocean?
Arctic decomposers also include larger, scavenging animals. Any animal that eats meat can be a scavenger, but some are specialists. The most common are birds like ravens and gulls. Canids, members of the dog family like Arctic foxes, are also frequent scavengers on the tundra.