Gracie Thomas

The Artic Tundra

The Artic Tundra

The main source of the web is the sun. The producers are liverworts, grasses, caribou moss and lichens. The primary consumers that eat the producers are the pika, caribou, lemmings and the artic hare. The secondary consumer, that eats the primary consumers and producers, are the artic fox and the brown bear. The tertiary consumer, which is the polar bear, eats the secondary consumers.
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Mutualism: Both Partners Benefit

An example of mutualism is when the Egyptian Plover flies into the mouth of a crocodile and feeds on leftover meat in the crocodile's teeth. This benefits both because it serves as a meal for the Egyptian Plover at the same time cleans the teeth of the crocodile.


Mutualism in the Artic Tundra is lichen that appears like moss but it's actually symbiotic between a fungus and algae. The fungus is fed sugars by the photosynthesis and the algae receives protection from the fungus.

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Commensalism: One Species Benefits While the Other is Neither Helped Nor Harmed

The example of commensalism is the remora fish and the shark. The remora fish uses it's dorsal fin to attach to the shark's back. The remora fish eats the scraps the host (shark) leaves behind. The remora fish gains while the shark is neither harmed or helped.


Commensalism in the Artic Tundra is when the artic fox follows the caribou who removes the snow to get at lichens under the soil. The artic fox then hunts the animals that have been dug up by the caribou.

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Parasitism: One Organism (parasite) Gains, While the Other (host) Suffers

The example of parasitsim is the deer tick (parasite) attaches to a warmblooded animal (host) and feeds on it's blood. The deer tick (parasite) benefits (gains) while the warmblooded animal/dog (host) suffers a loss of nutrients and can possibly get sick.


Parasitism in the Artic Tundra is the liver tapeworm cysts that are in the moose, caribou and wolves.

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Humans Impacting our Environment

Humans impact our environment in several ways. Water pollution is a negative impact on our environment. This could happen becasue of oil spills that go directly into our water. We could also have land pollution. This is when people through trash out that is not biodegadeable. This pollution will get into our soil. Humans can also impact our environment in a positive way. One example would be when people clear the waterways of natural debris and trash that can help the ecosystem. Clearing the waterway could allow plants to grow which would help the fish live.

Polar Bear

The Polar Bear is the top level consumer in my food web for the Artic Tundra. The top level consumer is a carnivore (meat eater) that feeds on other carnivores (meat eaters) and is at the very top of the food chain.
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Artic Fox

The Arti Fox is a secondary consumer in my food web in the Artic Tundra. Secondary consumers feed on carnivores (meat eaters) or omnivores which are carnivores (meat eaters) and herbivores (plant eaters).
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Liverworts

Liverworts are the producer in my food web for the Artic Tundra. Liverworts are at the base of the food pyramid and are producers because the produce their own food from the sun, carbon dioxide, air and water which is called photosynthesis.
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