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Tundra Biome ((Primary Producers (Bearberry (Primary Consumers (Caribou,…
Tundra Biome
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An environmental law that protects our biome is "Canada Wildlife Act". This act allows the conservation and study of wildlife and the creation of National Wildlife Areas. The species that we have provided as examples live in this tundra biome in Canada and because of this law their homes are protected as National Wildlife Areas.
Symbiotic Relationship: An example of commensalism, where one species benefits and the other in unaffected, is the relationship between the arctic fox and the caribou. The caribou has to dig in the snow to get food for itself (grass) and as it digs, animals and insects are exposed which serves as a main food source for the arctic fox. Once exposed, the fox continues to dig up the animals under the snow. Without the caribou digging up the snow, the fox would not have a food source.
A keystone species in our food web is the polar bear. The polar bear eats the seal, which eats the fish, which eats a primary producer in the ocean. Without the polar bear the seal population and the fish population would grow too high for the primary producer to provide for. This potential result is what makes the polar bear a keystone species. According to World Wildlife Fund polar bears extinction risk is set at vulnerable. Due to the melting ice caps, polar bears are loosing their habitat, which could potentially disrupt the entire biome.
A non-native species in the Tundra Biome are foxes. They prey on tundra animals and effect food supplies for native predators. Birds and other small mammals are eaten by these invasive species and are threatened by lower numbers.
The species in our example of Yukon have successfully achieved resource partitioning, even though niches have overlapped. All the species are connected in the food web and this balance is critical to survival of the species. The arctic hare and the caribou both eat the caribou moss. Since the caribou is naturally taller and larger in size than the arctic hare, the caribou has evolved to eating a vegetation that is larger such as leaves off bushes. Therefore the arctic hare can go on eating the caribou moss and the food source is not depleted.
