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Dynamics population

Dynamics population. Karen garzon osorio 8ª. How are indivuals , populations,communities and ecosystems related. Population : a population is a group of individuals they belong to the same species and live in the same area , all the population needs : Air Water Food Space

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Dynamics population

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  1. Dynamics population Karen garzonosorio 8ª

  2. How are indivuals, populations,communities and ecosystemsrelated • Population: a populationis a group of individualstheybelongtothesamespecies and live in thesamearea, allthepopulationneeds: • Air • Water • Food • Space • Shelter

  3. How are indivuals, populations,communities and ecosystems related • Community: is a group of populationthatinteractwitheachother in a particular area,elephants,zebras and giraffe art at thesamecommunity • Ecosystem: is a community of organisms living together alone with the nonliving parts of the enviroment.

  4. Populationdensity • Isthenumberororganims per unitarea • Example: • Theopulationdensity of cattleegretsisarea ter nearthewaterbuffalo, isthegreaternearthebuffalothanfartheraway. Nearthewaterbuffalo, theremight be threebirds per meter square.

  5. Dynamics population • Spatialdistribution: isthepattern of spacing of a populationwhitinanarea. • Populationrange: is a certainpopulation of living beingsthatlive in a certain place. • Limitingfactorskeep a populationfromcontiuningtoincreaseindefinitely. Decreasing a limiting factor, such as theavailablefoodsupply, oftenchangesthenumber of individualsthat are abletosurvive in a givenarea.

  6. Dynamics population • Density in - dependentfactors: any factor in theenvironmentthatdoesnotdependonthenumber of members in a population per unitareaisdensity – independent factor. • Example: • Flooding • Extreme heatorcold • Tornadoes • Hurricanes

  7. Dynamics population • Density – dependentfactors : any factor in theenvironmentthatdependsonthenumber of members in a population per unitareais a density – dependent factor. • Example: • Disease • Parasites • Competition

  8. Dynamics population • Populationgrowthrate: explainshowfast a givenpopulationgrows. Exponentialgrowthrate: it describes howfast a living beinggrows and howfastit reproduces

  9. Dynamics population • Logisticgrowthmode: its describes howanimalsdoesnthaveanyoffspring, thentheopulationitsgrowingtillot hits thecarryingcapacity and stopsgrowing.

  10. Dynamics population • Carryingcapacity: isthemaximumnumber of individuals in a speciesthatanenvironment can supportforthelongterm. • Carryingcapacityislimitedbytheenergy, water, oxygen, and nutrients.

  11. Dynamics population • Zero populationgrowth: occurswhenthebirthrateequalsthedeathrate. Oneestimateisthattheworldwillreach 2p6 between 2020 tith 6.64 billionpeople and in the 2029 tih 6.90 billionpeople. Thiswill mean thatthepopulation has stoppedgrowing.

  12. Dynamics population • Immigration: movement of individualsinto a population • Emigration:movement of individualsout of a population.

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