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19 Cards in this Set

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the study of interactions of living orgnaisms with one another and with their environment
ecology
place where a particular population of a species lives
habitat
the many different species that live together in a habitat
community
ecological sysem encompassing a community and all the physical aspects of its habitat
ecosystem
physical aspects of a habitat
abiotic factor
living organisms in a habitat
biotic factor
the variety of species living within an ecosystem
biodiversity
small, fast growing plants that are the first organisms to live in a new habitat
pioneer species
the regular progression of species replacement that occurs after disturbance or the development of new habitat
succession
succession that occurs in a newly formed habitat that has never before sustained life
primary succession
an episode of succession that occurs in areas where there has been previous growth, such as abandoned fields or forest clearings
secondary succession
the amount of organic material that the photosynthetic organisms of an ecosystem produce
primary productivity
organism that makes it own food from energy and carbon atoms in its environment; autotroph
producer
organism that must obtain energy to build its molecules by consuming other organisms; heterotroph
consumer
a group of organisms that have the same source of energy; a step in a food chain
trophic level
linear pathway of energy transfer in an ecosystem
food chain
organism that eats only plants or algae
herbivore
flesh-eating organism
carnivore
animal that eats both plants and animals
omnivore