The energy in most ecosystems flows through the food chain. In terrestrial ecosystems and most marine ecosystems, the energy flow starts in green plants that harvest some of the sun’s energy. The plants are then consumed by animals, bacteria and other creatures, which are themselves eaten by other creatures. At each step in the food chain, energy is lost as heat.Continue Reading
Scientists refer to green plants as producers because they effectively produce the food for the entire food chain. Green plants use the process of photosynthesis to capture light energy, combine it with carbon dioxide and water, and then form sugars to store the energy chemically. The organisms that eat these plants are called consumers. Sometimes a distinction is drawn between primary consumers, which eat green plants, and secondary consumers, which eat other consumers.
The amount of energy present at each step in the process is much less than was in the preceding step. This means that eventually, the energy is gone, and no further energy is left. At the bottom of the food chain, organisms called scavengers feed off the last remaining bits of energy in an organism. These scavengers then release the remaining minerals and nutrients from their food into the environment where they are recycled.Learn more about Earth Science
A lion's niche refers to its place in its ecosystem and the lion's niche is at the top of the food chain where it is responsible for eating numerous animal species. The lion's job in its ecosystem is to help control the population of other animals in the ecosystem by hunting and eating them.Full Answer >
Because lions only inhabit certain limited parts of Africa, which is a very large continent with varied geology, they cannot accurately be said to dominate wildlife on that continent, though they are apex predators who tend to be at or near the top of their ecosystem's food chain. And while lions are skilled hunters and fierce predators, some other predators, such as hyenas, have been known to outcompete and even dominate lions. Full Answer >
In the trophic structure, classification of organisms in an ecosystem occurs through the energy source and consumption of food by an organism. The trophic structure represents the relationship between species and food sources.Full Answer >
There are several biotic (living) and abiotic (nonliving) factors that are common to all types of desert biomes, or ecosystems, including cacti, fire ants, high daytime temperatures and sand. Biotic factors also include plants and animals such as sagebrush, scorpions, lizards and snakes. Abiotic factors include low temperatures at night, wind, and lack of rainfall.Full Answer >