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Lecture 36

BIOLOGY 1M03 Lecture Notes - Lecture 36: Genetic Diversity, Holocene Extinction, Ecosystem DiversityPremium


Department
Biology
Course Code
BIOLOGY 1M03
Professor
Jon Stone
Lecture
36

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BIOLOGY1M03Lecture36BiodiversityandConservationBiology
KeyPoints:
● Biodiversityisquantifiedatthelevelof:
○ Allelicdiversity
○ Speciesdiversity
○ Ecosystemdiversity
● Accordingtorecentanalyses,thesixthmassextinctioninthehistoryoflifeis
occurringdueto:
○ Habitatloss
○ Overexploitation
○ Globalclimatechange
● Humansdependonbiodiversityfortheproductsthatwildspeciesprovideand
forecosystemservicesthatprotectthequalityoftheabioticenvironment
● Solutionstothebiodiversitycrisisincluding
○ Protectingkeyhabitats
○ Loweringhumanpopulationgrowth
○ Loweringhumanresourceuse
○ Restoringecosystems
○ Mitigatingclimatechange
○ Supportingsustainabledevelopment
BiodiversityanditsMeasurementandAnalysis:
● Geneticdiversity
○ Thetotalgeneticinformationcontainedwithinallindividualsofa
species
○ Measuredasthenumberandrelativefrequencyofallallelespresent
inaspecies
● Speciesdiversity
○ VarietyofspeciesonEarth
● EcosystemDiversity
○ Thearrayofbioticcommunitiesinaregionalongwithabiotic
components,suchassoil,water,andnutrients
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