Biodiversity: Who cares?. B. A. Which do you like better?. Which do you like better?. B. A. Which do you like better?. A. B. What do you think biodiversity means?. Bio diversity. What does “ Bio ” mean?. Life. Bio =. Bio diversity. What does “ Diversity ” mean?. - PowerPoint PPT Presentation
Who cares?Which do you like better?AB
ABWhich do you like better?ABWhich do you like better?
What do you think biodiversity means?Bio =BiodiversityWhat does Bio mean?LifeBiodiversityDiversity = VarietyWhat does Diversity mean?BiodiversityALL organisms in an area
More kinds of organisms = greater biodiversity
High biodiversity = healthy, sustainable environmentThe essential interdependence of all living things
Scientists have identified more than 2 million species. Tens of millions -- remain unknown
The tremendous variety of life on Earth is made possible by complex interactions among all living things including microscopic species like algae and mites. Natural Capital: Major Components of the Earths Biodiversity
10There are 4 components of biodiversity Diversity of genesChihuahuas, beagles, and rottweilers are all dogsbut they're not the same because their genes are different.
ChihuahuaBeagleRottweilersDiversity of speciesFor example, monkeys, dragonflies, and meadow beauties are all different species.
Saki MonkeyGolden SkimmerMeadow BeautyThere are 3 components of biodiversity Variety of ecosystemsPrairies, Ponds, and tropical rain forests are all ecosystems. Each one is different, with its own set of species living in it.
Paines PrairieHoh Rain ForestFlorida Sand hill PondThere are 3 components of biodiversity Components of biodiversitySpecies diversity: the number and abundance of species
Ecosystem diversity: The variety of ecosystems found in a place or on earth
Functional diversity: variety in the processes and energy flow in an ecosystem
Genetic Diversity: Variety in traits/genes in a species
ABWhich has more cultural diversity?Biodiversity16 June 2010Biodiversity.ppt16
Where is the biodiversityEverywhereEvery continent and habitat has unique life formsConcentrated in the tropicsPanama: > 500 species of breeding birdsArctic: 50-100 speciesDense concentrations
Which has more biodiversity?AB
Should we be concerned about biodiversity?What we know: The Earth is losing species at an alarming rate Some scientists estimate that as many as 3 species per hour are going extinct and 20,000 extinctions occur each year. when species of plants and animals go extinct, many other species are affected.
Biodiversity has Intrinsic ValueIntrinsic Value = Something that has value in and of itselfBiodiversity also has utilitarian ValueUtilitarian Value = the value something has as a means to anothers end.Utilitarian values include:GoodsServicesInformationBenefits of BiodiversityNatural ResourcesFoodMedicineClean waterClean airOxygenHabitat & breeding areas for wildlife, Aesthetic and cultural benefitsIdeas16 June 2010Biodiversity.ppt21
Natural ResourcesVital economic natural resourcesRenewableForests (plants, wildlife) Soils Fresh water (lakes, rivers)Wildlife and fisheriesRangeland NonrenewableMinerals Fossil Fuels
16 June 2010Biodiversity.ppt22Benefits of BiodiversityNew food sourcesGrains, fruits, vegetables, meat, fish
16 June 2010Biodiversity.ppt23
Benefits of BiodiversityMedicinesPlantsJellyfish & sea anemonesNudibranchs Marine slugs
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What is Biodiversity? The variety of life!genesspeciesecosystemsThreats to biodiversityHabitat destructionInvasive (Introduced) SpeciesPopulation GrowthPollutionOver-harvesting = Over exploitation~HIPPO~Threats to BiodiversityExtinction and population reductionsHunting and overharvestingTigerDodoWhalesSharks Habitat loss 16 June 2010Biodiversity.ppt27
Threats to BiodiversityExtinction and population reductionsPollutionClimate changeInvasive species16 June 2010Biodiversity.ppt28
Chinese Tallow TreeInvasive Species in our areaSustainabilityDefinition: when a population of plants, animals and other living organisms can continue to interact and reproduce indefinitely it is the capacity to endureThe more links in a food web, the more stable and sustainableit is.
31SPEAKERS NOTES:Removing one link from a food web that has many links does not affect it as much as if there were very few links.What is sustainable use?To use natural resources at a rate that the Earth can renew them. Threats to SustainabilityThe more organism that can fulfill a particular niche (energy role) in an ecosystem the more likely it is to sustain a threat.
Choose 3 of the following threats to ecosystem sustainability and explain why this is true:
DiseaseEnvironmental changeLimited resourcesHuman disturbanceCatastrophic eventsInvasive Species
33Sustainable Use of BiodiversityTo use biodiversity in a sustainable manner means to use natural resources at a rate that the Earth can renew them. What kinds of natural resourcesare we talking about here?Biodiversity and SustainabilityThe biodiversity of an ecosystem contributes to the sustainability of that ecosystem.Higher/more biodiversity = more sustainableLower/less biodiversity = less sustainableHigh biodiversity in an ecosystem means that there is a great variety of genes and species in that ecosystem.
35SPEAKERS NOTES:How does an ecosystem become sustainable?
By having a lot of biodiversity.The biodiversity of an ecosystem contributes to the sustainability of that ecosystem. The higher the biodiversity of an ecosystem, the more sustainable it is. Conversely, lower biodiversity equals less sustainability.
Why is this?
The higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem.
What is Biodiversity? The variety of life!genesspeciesecosystemsSustainable Use of BiodiversityTo use biodiversity in a sustainable manner means to use natural resources at a rate that the Earth can renew them.
It is a way to ensure that we meet the needs of present generations and future generations. Are we part of these ecosystems?Think food webs!!!!!!!!!!!!!YES!The more links in a food web, the more stable and sustainableit is.
39SPEAKERS NOTES:Removing one link from a food web that has many links does not affect it as much as if there were very few links.Protecting Biodiversity16 June 2010Biodiversity.ppt40How can we protect biodiversityStop overharvestingSustainable yieldHunting & fishing laws (every state ?)in developing nations ?Protect habitat Refuges, parks, preservesEndangered Species ActClean Air & Water ActStop over grazing
Protecting Biodiversity16 June 2010Biodiversity.ppt41Endangered Species Act (1973)Listing of endangered and threatened speciesRestricts development of habitatsCaptive breeding programsRelease of captive bred stocks to enhance or recover wild populations.
Protecting BiodiversityEndangered Species Act (1973)Goal to recover species so they no longer need protection under ESAImplements U.S. participation in CITESConvention on International Trade in Endangered SpeciesProhibits trade in listed specieswhole organismsparts: skins, bones, teeth, flowers, leaves, etc. Other laws:Marine Mammal Protection ActMigratory Bird Treaty ActAnadromous Fish Conservation Actetc.16 June 2010Biodiversity.ppt42Protecting BiodiversityRefuges, parks, preservesHow big should refuges be?Where should they be?McArthur & Wilson Theory of Island Biogeographycolonization rateextinction rate (local)predicts number of species
16 June 2010Biodiversity.ppt43Formative Assessment
Examine the two food webs below.
Make 3 claims about why one of the food webs below is less sustainable than the other. Support your claims with explanation as well as evidence from the food webs.
Give students two examples of food webs in the same type of ecosystem, a biodiverse food web and a food web that is not biodiverse. Ask students to make 3 claims about why the less biodiverse food web is less sustainable than the biodiverse food web and support their claims with explanation and/or evidence from the food webs.
44What can you do?As a group brainstorm a list of things YOU can do to protect biodiversity!