The three ecological pyramids are a Pyramid of Numbers, a Pyramid of Biomass and a Pyramid of Energy Flow. All three ecological pyramids illustrate the reduction in energy when moving through each feeding level in an ecosystem.Know More
A Pyramid of Numbers counts all of the organisms at each specific feeding level. This can be difficult in some ecosystems, as it is not always possible to count how many of each species is present.
A Pyramid of Biomass collects the organisms from each feeding level, then dries and weighs them. The dried weight shows the amount of organic matter of the organisms.
A Pyramid of Energy Flow measures the caloric value of the organisms at every feeding level.Learn more about Environmental Science
Ecological balance is important for the continued survival and existence of organisms as well as the stability of the environment. The natural balance in the ecosystem, which must be maintained, may be disturbed as a result of natural hazards, the unexpected death of a particular species, man-made causes or the introduction of new species to the ecosystem.Full Answer >
The gray wolf, the largest canine species in the world, is a keystone predator in northern areas that eats big, hoofed animals such as moose, elk, bison, deer and caribou. They live in the northern hemisphere of America, Europe and Asia. The gray wolf once roamed over two-thirds of the United States until intense hunting threatened the species to extremely low levels in the 1930s.Full Answer >
Ecosystems that have biodiversity are very productive, recycling nutrients easily and quickly. Such ecosystems are healthy, self-sufficient and better able to overcome disasters. Biodiversity acts as a system of checks and balances; if one part of an ecosystem weakens for awhile, stronger parts help it survive.Full Answer >
The stages of ecological succession are primary succession, when opportunistic species move into a mostly lifeless environment, and secondary succession, when new species displace the primary succession species once the latter has modified the environment. In some cases, secondary succession proceeds to a climax community.Full Answer >