What is Tundra Ecosystem Definition Types and Food Chain
Structure and functional units of ecology are termed ecosystem. It is a surrounding where all living organisms interact with each other and their surrounding environment. It can also be defined as a chain of interaction between organisms and their environment.
A.G. Tansley (English botanist) was the one who coined the term ‘ecosystem’ in 1935. Ecosystem consists of both living and nonliving components and both of them interact with each other to maintain equality in the chain.
Types of Ecosystem
The size of the ecosystem can differ from place to place - it may be as small as an oasis of a desert or it may be as large as a big ocean. So on this basis, we can categorise ecosystems into two types, they are terrestrial ecosystems or aquatic ecosystems. Furth both of these terrestrial and aquatic ecosystems are divided into different types based on their surrounding.
Based on different geological zones terrestrial ecosystem is divided into various types, they are:
A. Forest Ecosystems
B. Grassland Ecosystems
C. Tundra Ecosystems
D. Desert Ecosystem
Tundra Ecosystem
In this type of ecosystem, they are free from trees as it is covered by snow for most of the year. These ecosystems are mainly present in those areas where there is a cold climate and very limited or no rainfall. One of the common regions where tundra ecosystems are found is the polar regions.
There are two types of tundra ecosystems, they are discussed below:
A. Arctic:
This tundra is mainly located in the northern hemisphere, encircling the north pole and extending towards the south. This tundra is known for its cold and desert-like conditions. In this region temperatures during winters are about 3-120 C during day time and -340 C during night time. This temperature enables biomes to sustain in this condition. Approx 1,700 kinds of plants are found in the arctic region with good adapting capability. Some of the common plants are low shrubs, sedges, reindeer mosses, liverworts, and grasses; 400 varieties of flowers example: crustose and foliose lichen.
B. Alpine:
They are mainly located in mountainous areas throughout the world and in this area trees can not be grown. In this area, the temperature is below the freezing point during nighttime. The soil of this region is well-drained. Some of the plants which are present in this tundra region are tussock, dwarf trees, small-leafed shrubs, heaths, etc. Animals in this region have high adapting capabilities. Examples of mammals that are mainly found for this reason are pikas, marmots, mountain goats, sheep, elk : Birds: grouse like birds.
Distribution of Tundra Ecosystem
10 percent of the total earth surface is covered by tundra ecosystems. From the southern boundary, there is a start of the arctic tundra which goes through the northern edge of the coniferous forest belt, whereas the alpine tundra is mainly found in the Northern Hemisphere.
Features of Tundra Ecosystem
Some of the common and well-known features of the tundra ecosystem are discussed below:
A. The Tundra ecosystem mainly has a long cold winter and a very short hot summer, that is
why they are known for winters.
B. This ecosystem mainly has winds with high humidity and less amount of rainfall.
C. Some of the common nutrients present in this reason are nitrogen and phosphorus. Production of phosphorus is mainly by a precipitation process, whereas a biochemical process produces nitrogen.
D. At night time temperature in this region is below the freezing point whereas in day time it is a little bit normal which provides favourable conditions for plant growth.
Plants Found in Tundra Region
Some of the known plants which are found in this region are:
Cottongrass
Dwarf heath
Sedge
Rushes
Dryland sedges
Sphagnum moss
Birches
Crustose
Heath shrubs
Dwarf willows
Animals Found in Tundra Region
In this region, all kinds of animals are found like omnivores, carnivores, herbivores. Some of the common examples of animals found in this region are:
Wolf, foxes, hare, collembolans, muskox, reindeer, marmots, mountain goats, sheep, elk and other different types of worms, flies, butterflies, wild insects.
FAQs on Tundra Ecosystem Structure Climate and Adaptations
1. What is the tundra ecosystem?
The tundra ecosystem is a cold, treeless biome characterized by low temperatures, short growing seasons, and permanently frozen subsoil called permafrost. It is mainly found in the Arctic and at high mountain elevations (alpine tundra). Key features include:
- Extremely low temperatures for most of the year
- Short summers lasting 6–10 weeks
- Low biodiversity compared to other biomes
- Thin, nutrient-poor soil
2. Where is the tundra biome located?
The tundra biome is primarily located in the Arctic regions of the Northern Hemisphere and in high mountain areas worldwide. Major locations include:
- Arctic tundra – Northern Canada, Alaska, Greenland, Scandinavia, and Siberia
- Alpine tundra – High-altitude mountain ranges such as the Himalayas and Andes
3. What is permafrost in the tundra ecosystem?
Permafrost is a permanently frozen layer of soil found beneath the surface of the tundra. It remains frozen for at least two consecutive years and plays a major role in the tundra ecosystem by:
- Preventing deep root growth of plants
- Limiting drainage, leading to waterlogged soil in summer
- Slowing decomposition and nutrient cycling
4. What types of plants grow in the tundra?
The tundra supports low-growing plants such as mosses, lichens, grasses, and dwarf shrubs. These plants are adapted to cold and windy conditions through:
- Shallow root systems
- Small or waxy leaves to reduce water loss
- Cushion-like growth forms close to the ground
5. What animals live in the tundra ecosystem?
The tundra ecosystem is home to cold-adapted animals such as the Arctic fox, caribou, snowy owl, and polar bear. These animals survive through adaptations like:
- Thick fur or blubber for insulation
- Seasonal migration (e.g., caribou)
- White camouflage in winter
6. What are the main characteristics of the tundra climate?
The tundra climate is extremely cold, dry, and windy with a short growing season. Its main characteristics include:
- Long, harsh winters with temperatures below −30°C
- Short, cool summers
- Low precipitation (mostly snow)
- Strong seasonal light variations (polar day and night)
7. How do plants and animals adapt to the tundra ecosystem?
Plants and animals in the tundra show structural, physiological, and behavioral adaptations to survive extreme cold. Key adaptations include:
- Low-growing plants to avoid strong winds
- Dark-colored leaves to absorb more heat
- Thick fur and fat layers in animals
- Hibernation or migration during winter
8. What is the difference between Arctic tundra and alpine tundra?
The main difference between Arctic tundra and alpine tundra is their location and presence of permafrost. Key differences include:
- Arctic tundra occurs near the North Pole and has extensive permafrost
- Alpine tundra occurs at high altitudes on mountains
- Alpine tundra generally lacks permanent permafrost
9. Why is the tundra ecosystem important?
The tundra ecosystem is important because it stores large amounts of carbon in its permafrost and supports unique biodiversity. Its significance includes:
- Acting as a major global carbon reservoir
- Regulating Earth’s climate system
- Providing habitat for specialized Arctic species
10. How does climate change affect the tundra ecosystem?
Climate change affects the tundra ecosystem by causing rising temperatures and thawing of permafrost. Major impacts include:
- Release of stored greenhouse gases
- Shift in plant species and shrub expansion
- Habitat loss for Arctic animals
- Changes in migration and breeding patterns
