Ecosystem portfolio

Abiotic factors of the tundra include things like:

Temperature (usually below freezing). If you go up a mountain every 1000 meters the temperature would drop by 10°, for example if you start on the mountain at sea level at 30°C and go up 1000 meters the temperature will be 20°C.

·     Precipitation (rain, hail and snow fall). The average precipitation is around 100 inches per year. Most of this precipitation is in the form of snow.

·     Seasons (very long winters and short summers). Summer usually lasts from June to September at about 10 to 15 degrees Celsius. In the winter it goes from October to May at below freezing temperatures.

·     Altitude (depends on whether it is alpine tundra or arctic tundra).
The alpine tundra is at the altitude of 10,000 feet is right below the snow line of the mountains.
.pH level is salinity in the soil

The biotic factors that contain the alpine tundra are living organisms that impact the growth, composition, and structure of the alpine (e.g., insects, herbivores, humans). Also vegatation and symbiotic relationships.

Carrying capacity and changes in population:

Carrying capacity is the number of people, other living organisms, or crops that a region can support without environmental degradation.

Several resources they need for survival are warmth, shelter, food and water.

Over time populations can either grow or decrease, depending upon the amount of available in the region.

Limiting factors and predator/prey relationships

Definition of limiting factors: An environmental factor that tends to limit population size.

Example of limiting factor: If the producer on the food chain dies off, the entire food chain is affected.

The bobcat is dependent upon the rabbit for nourishment.

Energy roles:

Producers definition: It makes its own food from sun light. Examples are things like trees and plants in the tundra. Producer explanation: They are the beginning of the food chain, many animals depend on them for survival. Producers depend on the weather for survival.

Herbivore definition: An animal that feeds chiefly on plants. Examples could be animals like Bison, Ox, Rabbits.

Omnivore definition: An animal that eats both plants and other animals. Examples could be the Black Bear and Bobcat.

Carnivore definition: An animal that eats meat. Examples could be the Arctic Fox and Brown Bear.

Decomposer definition: An organism, usually a bacterium or fungus, that breaks down the cells of dead plants and animals into simpler substances. Examples could be fungus.

Scavenger definition: An animal or other organism that feeds on dead organic matter. An example could be a buzzard or vulture.

Food chains and food webs:

A food chain consists of producers, consumers, and a decomposer.

A food web has several food chains that are connected in an ecosystem.

Each thing on the food web is dependent on each other, if one is removed then the others are affected.

Trophic levels and energy pyramids:

Shape explanation: The base of the pyramid gets more energy than the top of the pyramid. The producers are on bottom because they receive more energy than the top.

Comment Stream

3 years ago


3 years ago

its a map of the U.S.A! so beautiful and magestic!😄