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Ecosystems and Energy Vocabulary
Terms in this set (31)
All the organisms in a given area as well as the abiotic factors with which they interact; one or more communities and the physical environment around them.
LAW OF CONSERVATION OF MASS
A physical law stating that matter can change form but cannot be created or destroyed. In a closed system, the mass of the system is constant.
An autotroph, usually a photosynthetic organism. Collectively, autotrophs make up the trophic level of an ecosystem that ultimately supports all other levels.
An herbivore; an organism that eats plants or other autotrophs.
A carnivore that eats herbivores
A carnivore that eats carnivores
A consumer that derives its energy and nutrients from nonliving organic material such as corpse, fallen plant material, and the wastes of living organisms; a decomposer.
Dead organic material
The amount of light energy converted to chemical energy (organic compounds) by the autotrophs in an ecosystem during a given time period.
GPP Gross Primary Production-
The total primary production of an ecosystem. (measured as the conversion of the chemical energy from photosynthesis per unit time.)
NPP Net Primary Production-
The gross primary production of an ecosystem minus the energy used by the producers for respiration. (Formula NPP=GPP-R)Amount of new biomass added in a given time period Only available for consumers
NEP Net ecosystem production
The gross primary production of an ecosystem minus the energy used by all autotrophs and heterotrophs for respiration.
An element that must be added for production to increase in a particular area
the amount of chemical energy in consumers' food that is converted to their own new biomass during a given time period.
the percentage of energy stored in assimilated food that is not used for respiration or eliminated as waste.
The percentage of production transferred from one trophic level to the next.
the time required to replace the standing crop of a population or group of populations (for example, of phytoplankton), calculated as the ratio of standing crop to production
BIOGEOCHEMICAL CYCLES (KNOW ALL 4)
any of the various chemical cycles that involve both biotic and abiotic components of ecosystems
The use of organisms to detoxify and restore polluted and degraded ecosystems.
An approach to restoration ecology that uses organisms to add essential materials to a degraded ecosystem.
an organism that absorbs nutrients from nonliving organic material such as corpses, fallen plant material, and the wastes of living organisms and converts them to inorganic forms: a detritivore
an ecological relationship between organisms of two different species that live together in direct and intimate contact
The larger participant in a symbiotic relationship, often providing a home and food source for the smaller symbiont.
the smaller participant in a symbiotic relationship, living in or on the host
a symbiotic relationship in which both participants benefit
a symbiotic relationship where one organism benefits but the other is neither helped nor harmed.
relationship where one organism, the parasite, benefits at the expense of another, the host, by living either within or on the host.
an organism that feeds on the cell contents, tissues, or body fluids of another species (the host) while in or on the host organism. Parasites harm but usually do not kill their host.
an organism or virus that causes disease.
a toxic protein that is secreted by a prokaryote or other pathogen and that produces specific symptoms, even if the pathogen is no longer present.
a toxic component of the outer membrane of certain gram-negative bacteria that is released only when the bacteria die.
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