Healthy Ecosystems: BIODIVERSITY. Biodiversity variety of different species of micro-organisms, animals and plants all organisms must interact ecosystems

  • View

  • Download

Embed Size (px)

Text of Healthy Ecosystems: BIODIVERSITY. Biodiversity variety of different species of micro-organisms,...

Healthy Ecosystems: BIODIVERSITY

Healthy Ecosystems: BIODIVERSITY

Biodiversityvariety of different species of micro-organisms, animals and plantsall organisms must interactecosystems could not survive without biodiversityThree Types of BiodiversityTYPE I:Community biodiversity:the different types of communities or ecosystems that exist on earthwhat types of examples are there?

TYPE II:Genetic Biodiversity:differences that occur within a single speciesspecies: related group of organisms that share a similar form and can produce fertile offspringgenes in a species allow for differences in characteristicsmore genetic diversity = better chance of adapting to new conditionsThree Types of Biodiversity

Example 1Example 2

TYPE III:Species Biodiversity:involves all species of life on earthestimates: 10 30 million different speciesonly recorded about 1.9 millionDelicate

we are currently losing biodiversityThree Types of BiodiversityMass Extinctionswhere many species die out5 in historycause: environmental factorsare we going through a 6th mass extinction?

rate of die off faster than the normal rate over the past 60 million yearsSince last mass extinction more species evolving faster than species dying off

Now, because of human activities, species are becoming extinct faster than new species evolveBiggest cause: habitat loss and destructionEndangered Animals in China Indonesia and India.movWhy Care?key to healthy ecosystemshumans rely on biodiversity to provide ecological goods and servicesfoodwaste treatmentsoil formationproduction of oxygenpollinationpest controlclimate regulationdisease controlLimiting Factorsenvironmental factors that prevent a population from growingcan prevent moving into other areascan be biotic or abioticwhat are examples?

Key Factorsall factors play a rolekey limiting factors include:scarcity of water or sunlightabsence of preyabsence of habitattoo few members to reproduce and pass on genetic diversityWhat Is Canada Doing?Protect organisms that are threatened of disappearingThe Species At Risk Act (SARA)

SARA (Species At Risk Act)prevent indigenous species from becoming extinct or extirpated (local extinction)provide recovery of endangered speciesencourage management of other species to prevent becoming at risk

AssessmentCommittee on the Status of Endangered Wildlife in Canada (COSEWIC)Decides status on species and provides designationSARA ensures organisms are protected and managedDesignationExtinctExtirpated EndangeredThreatenedSpecial ConcernNot At RiskGroup ActivityRead the reportDescribe:biologywhy threatenedstatusdistributionhabitatUse words, pictures, or anything to convey your message


A Scenario....The Canadian Government only has enough money to properly protect and manage one of these species.Which one should it be?Prove your case to the Committee