Vocabulary list on the Interconnectedness Unit
a step in the movement of energy through an ecosystem, represented by a
particular set of organisms; "feeding" level
an organism that cannot produce its own food and so must get it from other organisms. Examples are all fungi and animals.
an organism that produces its own food
a photosynthetic green plant or chemosynthetic bacterium, constituting the first trophic level in a food chain; an autotroph
organisms that obtain nutrients from other organisms. This is also a heterotroph
an organism of decay. They break down the remains of dead animals and plants, releasing the substances that can be used by other members of the ecosystem.
animals that feed only on plants. Rabbits, cattle, horses, sheep and deer are all herbivores.
animals that feed on other animals.
animals that feed on both plants and animals. Examples of omnivores are humans and bears.
the interconnection of all food chains in an ecosystem.
the path of food energy transfer from green plants (producers) to grazers (primary consumers), omnivores and carnivores (secondary consumers), and to their predators (top carnivores).
the loss of water into the the atmosphere through plant tissues
population size that can be supported by available resources
a group of individuals of the same species
process used by plants and other autotrophic organisms to convert light energy, normally from the sun, into chemical energy.
where an organism lives
how an organism fits into its community; an ecological role
the science of our biosphere; it deals with the relationship between organisms and their environment
the earth and its atmosphere
a community of living and non-living things that work together.
a system in which energy and matter are exchanged between the system and its environment
are ecosystems that do not rely on matter exchange with any part outside the system.
interaction between two or more organisms, or groups of organisms, that use a common resource in short supply
interaction between two species in which both benefit
relationship between two organisms where one organism benefits without affecting the other
a non-mutual relationship between organisms of different species where one organism, the parasite, benefits at the expense of the other, the host
an interaction where a predator (an organism that is hunting) feeds on its prey (the organism that is hunted)