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Campbell Biology Chapters 50-55
Ecology
54
Biology
11th Grade
04/04/2011

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Term
Organismal Ecology
Definition
Ecology concerning how an organism's structure, physiology and behavior meet the challenges posed by the environment.
Term
Population Ecology
Definition
Ecology concentrating on factors that affect how many individuals of a particular species live in an area.
Term
Community Ecology
Definition
Ecology with deals with the array of interacting species in a community.
Term
Ecosystem Ecology
Definition
Ecology which focuses on energy flow and chemical cycling among biotic and abiotic factors in an ecosystem.
Term
Landscape Ecology
Definition
Ecology which deals with an array of ecosystems and how they are arranged in a geographic region.
Term
Precautionary Principle
Definition
"An ounce of prevention is worth a pound of cure."
Term
Dispersal
Definition
The movement of individuals away from centers of high population density, contributing to the Earth's biogeography.
Term
Macroclimate
Definition
Climate patterns on the global, regional or local levels.
Term
Microclimate
Definition
Minute climate patterns such as those encountered by the community of organisms under a fallen log.
Term
Turnover
Definition
A semiannual mixing of the water in a lake which brings oxygenated water from the bottom to the surface in both spring and autumn.
Term
Photic Zone
Definition
The area of an aquatic biome in which light penetrates.
Term
Aphotic Zone
Definition
The area of an aquatic biome in which light doesn't penetrate.
Term
Benthic Zone
Definition
The area of an aquatic biome which is made up of sand and organic and inorganic sediments.
Term
Benthos
Definition
The community of organisms occupying an aquatic biome's benthic zone.
Term
Detritus
Definition
Dead organic matter.
Term
Thermocline
Definition
A stratum of temperature in the ocean and most lakes.
Term
Oligotrophic Lakes
Definition
Lakes which are nutrient poor but oxygen rich.
Term
Eutrophic Lakes
Definition
Lakes which are nutrient rich but oxygen poor.
Term
Littoral Zone
Definition
The shallow, well-lighted waters close to shore.
Term
Limnetic Zone
Definition
The area in which water is too deep to support rooted aquatic plants and is thus inhabited by phytoplankton and cyanobacteria.
Term
Wetland
Definition
An area covered with water for a long enough period to support aquatic plants.
Term
Estuary
Definition
A transition area between river and sea.
Term
Intertidal Zone
Definition
An aquatic biome which is periodically submerged and exposed by the tides twice daily.
Term
Oceanic Pelagic Biome
Definition
A vast realm of open water which is constantly mixed by wind-driven oceanic currents.
Term
Marine Benthic Zone
Definition
A zone which consists of the seafloor below the surface waters of the coastal zone and the pelagic zone.
Term
Netritic Zone
Definition
A zone which consists of coastal waters.
Term
Abyssal Zone
Definition
A zone which consists of the very deep benthic areas.
Term
Climograph
Definition
A plot of the temperature and precipitation of a particular region.
Term
Ecotone
Definition
The area of intergradation between biomes on a climograph.
Term
Terrestrial Biomes
Definition
Tropical rain forests, deserts, savannas, chapparral (dense shrubby area), temperate grasslands, coniferous forests, temperate broadleaf forests, tundra,
Term
Pheromones
Definition
Chemical substances emitted by animals as a form of communication.
Term
Associative Learning
Definition
The ability of many animals to associate one feature of the environment with another.
Term
Classical Conditioning
Definition
A type of associative learning in which an arbitrary stimulus is associated with a reward or punishment.
Term
Operant Conditioning
Definition
A type of associative learning in which an animal learns to associate one of its own behaviors with a reward or punishment.
Term
Polygyny; Polyandry
Definition
A system in which one male mates with many females; A system in which one female mates with many males.
Term
Game Theory
Definition
An attempt to model human economic behavior which evaluates alternative strategies in situations where the outcome depends not only on each individual's strategy but also on the strategies of others.
Term
Demography
Definition
The study of the vital statistics of populations and how they change over time.
Term
Cohort
Definition
A group of individuals of the same age who can be studied to create a life table.
Term
Big Bang Reproduction, or "Semelparity"
Definition
A method of reproduction in which many offspring are produced at once, killing the parent.
Term
Repeated Reproduction, or "Iteroparity"
Definition
A method of reproduction in which several offspring are produced periodically.
Term
K-selection
Definition
Selection for life history traits which are sensitive to population density.
Term
r-selection
Definition
Density independent selection.
Term
Competitive Exclusion
Definition
Strong competition between two species leading to the elimination of one or the other.
Term
Ecological Niche
Definition
If the habitat is an "address", this is an organism's "profession".
Term
Resource Partitioning
Definition
The differentiation of niches that enables similar species to coexist in a community.
Term
Batesian Mimicry
Definition
Mimicry in which a harmless species mimics a harmful or unpalatable one.
Term
Mullerian Mimicry
Definition
Mimicry in which two or more unpalatable species resemble each other.
Term
Trophic Structure
Definition
The feeding structure of a community.
Term
Net Primary Production
Definition
Equal to Gross Primary Production minus the energy used by primary producers for respiration.
Term
Eutrophication
Definition
Nutrient limitation in water caused by sewage runoff leading to cyanobacterial bloom and the death of fish species.
Term
Eutrophication
Definition
Nutrient limitation in water caused by sewage runoff leading to cyanobacterial bloom and the death of fish species.
Term
Production Efficiency
Definition
The fraction of energy stored in food that is not used for respiration.
Term
Trophic efficiency
Definition
The percentage of production transferred from one trophic level to the next.
Term
Biological Augmentation
Definition
The use of organisms to add essential materials to a degraded ecosystem.
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