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Ecology

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124317709Innate BehaviorCertain behaviors that are not learned but are"built in"
124317710ImprintingLearning a behavior at a specific time in an organisms life
124317711Fixed Action PatternA set of behaviors that cannot be changed
124317712Sign StimulusAn external sensory stimulus that triggers FAP
124317713KinesisChanging the rate of an action in response to a stimulus; moving around until suitable and is found
124317714TaxisMovement away or toward a stimulus; constantly moving from land to land
124317715MigrationThe seasonal movement of a complete population of animals from one area to another
124317716PheromonesChemicals that are communicated with; a dog peeing on a tree marks its territory
124317717Learning BehaviorModifying your behavior based on specific events in a lifetime; modified by experience
124317718HabituationAfter repition, animals begins to ignore; loss of response to stimulus
124317719Classical ConditioningLearning associated with a reward or punishment
124317720Operant conditiongLearning by trial and error
124317721Sexual SelectionMate choosig the opposite gender; natural selection for mating success
124317722Agnostic BehaviorTwo competitors competeing for access to a resource
124317723AltruismConcern for the well-being of others or a group; an animal giving up oneself for another based on relatedness
124317724Hamiltons RuleThe benefit to the recipient must exceed the cost to the altruist
124317725EstuaryConnects rivers to oceans; nursery for animals
124317726OligotrophicNutrient poor and oxygen-rich
124317727EutrophicNutrient rich and oxygen-poor
124317728BioticLiving factors in an environment
124317729AbioticNon-living, physical, or chemical factors; temperature, light, weather
124317730Intertidal ZoneWhere land meets water
124317731Oceanic ZonePast the continental shelf to far depths; not alot of food
124317732Benthic ZoneBottom of the aquatic biomes; no light
124317733TCoralWarm environments
124317734Terrestial Biome FactorsTemperature and light
124317735Water Biome FactorsSunlight and Solidity
124317736TundraNorthern most biome; soil is nutrient poor; short summers; caribou, reindeer, bears, wolves
124317737Tropical Rain ForestsEquator; high temps; daily rainfall; no dominant species; poor in nutrients and organic material; mammals
124317738Temperate GrasslandsN. and S. of equator; high organic content soil; mammals; three kinds of grasses
124317739SavannaEquatorial and subequatorial; low rainfall; warm year round; soil low in minerals; lions, zebras, gazelles
124317740ChaparralMidlatitude coastal region; dry summers and mild winters; frequent fires; seasonal rain; deer, goats, amphibians
124317741Temperate Decidious ForestMidlatitude; hot summers cold winters; soil depletion and erosion; mammals, birds, insects
124317742Coniferous Forest (taiga)S. of tundra; cold and severe winters; low precipitation; acidic soil; moose, brown bears, siberian tigers
124317743DesertN. and S. latitude or inside continents; low rainfall; hot days, freezing nights; rodents, amphibians, birds, insects
124317744Population DensityNumber of people per unit area; Change in pop. size/time interval over which we are evolved pop. growth= births - deaths
124317745Uniform Distributionpattern based; evenly spaced individuals; ex. forest of trees
124317746Random DistributionArbitrary pattern of individuals; ex. ants on a sidewalk
124317747Clumped DistributionIndividuals are aggregated in patches or groups; ex. school of fish or pride of lions
124317748Exponential GrowthUnlimited growth of the population because of no limitation on resources; mice
124317749Logistic GrowthLimited growth of the populatio because of limited resources
124317750K StrategiesDensity near their resources or carrying capacity; ex. humans
124317751R StrategiesA population that grows fast, reproduces fast, and dies quickly; ex. bacteria
124317752Carrying CapacityThe maximum population size a habitat can hold
124317753Density Dependent FactorsFactors that affect pop. size based on the density of pop.; food, predation, migration, disease
124317754Density Independent FactorsFactors that affect the pop. size regardless of density; weather, natural disaster
124317755Population Growth SumChange in pop. size/change in time interval=intrinsic rate of increase(population size)((number of extra individuals in environ.)/carrying capacity); dN/dt=rmaxN((k-N)/k)
124317756Predator Prey Growth CurveUp, down, up, down; ex. bunnys and wolves, wolves eat bunnies, bunny number goes down, lack of food causes wolf number to go down, bunny pop. rises, more food available for wolves and wolf pop. rises, etc.
124317757CommunityAll the organisms in a certain area
124317758SymbiosisLiving together between a host and a symbiont
124317759CompetitionTwo organisms that fight for a resource such as land or food
124317760PredationPredator eats the prey; one species benefits and the other does not
124317761HerbivoryAn organism that eats only plants
124317762MutualismBoth species benefit from the interaction
124317763ComensalismOne species benefits and the other is not affected
124317764ParsitismParasites live off the host; one species benefits and the other is harmed
124317765HabitatWhere an organism lives
124317766NicheThe role a plant or animal plays in its community/habitat; 1 species per niche
124317767Food WebsOrganisms feeding at ore than one tophic level
124317768Food ChainsFood is transferred from one trophic level to the next
124317769Dominant SpeciesSpecies in a community with the highest abundance or biomass
124317770Keystone SpeciesNot abundant in a community but has control on the community structure
124317771Foundation SpeciesDominant primary producer in an ecosystem both in terms of abundance and influence
124317772Primary SuccessionStarts with lifeless condition; can take hundreds of years
124317773Secondary SuccessionArea has been destroyed by a natural disaster and returns to normal state because fertile soil has not been removed
124317774Species RichnessThe number of species in a biological community
124317775Relative AbundanceDifferences in the abundance of different species within a community
124317776Energy PyramidTertiary consumer, seconary consumer, primary consumer
124317777Primary ProductonThe amount of light energy converted to chemical energy in an ecosystem
124317778Net Primary ProductionThe energy used by producers for cell respiration subtracted from the gross primary productivity
124317779Limiting NutrientsAn element that must be added for production to increase in a particular area
124317780DecomposersAny of the saprobic fungi and prokaryotes that absorb nutriens from nonliving organic material such as corpses, fallen plant matertial, and the wastes of living organisms, and convert them into inorganic forms
124317781Water CycleCycleing of water through evaporation, precipitation, percolation, and runoff
124317782Cabon/Oxygen CycleCycling of carbon through photosynthesis and cellular respiration
124317783Nitrogen CycleNitrogen enters the cycle as atmospheric nitrogen or through nitrogen fixation
124317784Phosphorous CycleFrom the weathering of rocks or soil are cycled around from one organism to another
124317785Nitrogen FixationThe conversion of nitrogen into compounds that can be used
124317786BiomagnificationRetained substances become more concentrated with each link in the food chain

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