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17 Cards in this Set

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pertaining to the non-living components of an environment (eg light, temperature, nutrients)
abiotic
mass of organisms; stnading crop
biomass
pertaining to the organisms in an environment
biotic
interacting populations of different species that occur i the same habitat
competition
organisms that obtain their energy and nutrients by degrading organix matter
decomposer
a graphic representation of the trophic structure of an ecosystem in which numbers or biomass are represented in a pyramis, with the producer level forming the base and successive levels of consumers above it
ecological pyramids
the organisms and non-living componenets of the physical environment at a particular site
ecosystem
a graphic representation of the interconnected feeding relationships among organisms in a community
food web
the physical space occupied by an organism
habitat
the ecological role of a species in an environment (characterized by both biotic and abiotic elements)
niche
an interaction between organisms in which one organism (prey) is consumed by the other (predator)
predation
an organism that is killed for food by another organism
prey
organisms that feed on producers; herbivores
primary consumer
autotrophs- primarily photosynthetic organisms that synthesize organisc substances from inorganic materials
producer
organisms thta eat other consumers; carnivores
secondary consumer
position in the food chain
trophic level
the organization of a community based on the feeding relationships of the component population
tropic structure