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Resources & Biodiversity
Biodiversity is thesum total of
different kinds oforganisms and is
affected byalterations of
habitats andresources.
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Renewable resources
Can regenerate if
they are alive
Can bereplenished by
biochemical cycles
if nonliving.
Renewable
resources are not
unlimited.
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Types of renewable resources
Solar energy
Wind
Land Hydro- power
Wood
Fish Geothermal power
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Non-Renewable resources
Cannot be
renewed through
natural processes.
Fossil fuels
Coal
Natural gas Oil
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Sustainable development
Using natural resources without depleting
them.
Providing for human needs withoutcausing long-term environmental harm
Human activities can affect the quality
and supply of renewable resources such
as land, forests, fisheries, air and fresh
water.
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What are clean fossil fuels?
Hydrogen
Fuel Cells
Energy research Centre of NREL: Hydrogen and Fuel
http://www.ecn.nl/en/h2sf/http://www.nrel.gov/hydrogen/systems_engineering.htmlhttp://www.nrel.gov/hydrogen/systems_engineering.htmlhttp://www.ecn.nl/en/h2sf/8/14/2019 Resources & Biodiversity
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Biodiversity
Why is it important?
What are the current
threats?
What is the goal ofconservation biology?
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Biodiversity=Variety
HOT SPOTS
Biodiversity is one of
Earths greatest
natural resources. Medicines
Genetic variety
Species variety
http://www.biodiversityhotspots.org/xp/Hotspots/pages/map.aspxhttp://www.altnature.com/gallery/http://www.altnature.com/gallery/http://www.biodiversityhotspots.org/xp/Hotspots/pages/map.aspx8/14/2019 Resources & Biodiversity
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Threats to Biodiversity
Habitat alteration-overdeveloped landdestroys the naturalhabitat.
Over hunting, commericalfishing and illegalpoaching
Pollution- oil spills, urbanrunoff
Non-native species
Climate change
http://www.eoearth.org/article/Poachinghttp://www.eoearth.org/image/Hunters_with_a_net_rapped_on_a_stick_and_a_spear.jpghttp://www.eoearth.org/article/Poaching8/14/2019 Resources & Biodiversity
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DDT-Dichloro-Diphenyl-Trichloroethane
Was thought to be a
perfect pesticide-
cheap, remains active
for a long time, killsmany different types
of insects, kills
mosquitoes.
Banned in 1972
Rachel Carsons
book: Silent Spring
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Introduced Species
Non-native species
introduced by
humans.
Scientists assessedthe threat level of
329 marine invasive
species
3. Pacific sea star-
Australia
4. Green algae
http://www.dse.vic.gov.au/DSE/nrencm.nsf/LinkView/8146C236CC417D764A256A10007F062D92CD71AF8C1AF2E74A2567CA00817767http://www.hawaii.edu/reefalgae/invasive_algae/http://www.hawaii.edu/reefalgae/invasive_algae/http://www.dse.vic.gov.au/DSE/nrencm.nsf/LinkView/8146C236CC417D764A256A10007F062D92CD71AF8C1AF2E74A2567CA008177678/14/2019 Resources & Biodiversity
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Comb jelly
Reproduces
exponentially without
any predators. NorthAmerican species
which has devastated
fisheries in the Black
and Caspian Seas.
http://www.imagequest3d.com/catalogue/ctenophores/pages/h100_jpg.htmhttp://www.imagequest3d.com/catalogue/ctenophores/pages/h064_jpg.htmhttp://www.imagequest3d.com/catalogue/ctenophores/pages/h030_jpg.htm8/14/2019 Resources & Biodiversity
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Conservation efforts
1854- Henry David Thoreau
1872- Yellowstone
1892- John Muir Sierra Club
1896- Harriet Hemenway
1900-Lacey Act
1933- Civilian ConservationCorps
1966- Endangered Species
Act 1970- Earth Day
1992-Earth Summit
http://en.wikipedia.org/wiki/Image:John_Muir_Cane.JPGhttp://en.wikipedia.org/wiki/Image:Henry_David_Thoreau.jpg8/14/2019 Resources & Biodiversity
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Review
1. Why is biodiversity worth
preserving?
2. List 4 threats to biodiversity.
3. Why are habitats limitedresources?
4. What problems could result from
introducing a non-native speciesinto a new habitat.
http://www.nature.org/wherewework/northamerica/canada/features/Top Related