Habitat Loss Orange County, California. Dingo Fence – The World’s Longest – New South Wales.
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Transcript of Habitat Loss Orange County, California. Dingo Fence – The World’s Longest – New South Wales.
![Page 1: Habitat Loss Orange County, California. Dingo Fence – The World’s Longest – New South Wales.](https://reader035.fdocuments.net/reader035/viewer/2022062515/56649d0b5503460f949deb79/html5/thumbnails/1.jpg)
Habitat Loss
Orange County, California
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Dingo Fence – The World’s Longest – New South Wales
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The Dingo – Canis familiarus dingo
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Earth, Fire, and Water
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Erosion and loss of habitat on Round Island, Mauritius
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Maori Use of Fire
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Smokeythe bear- 1953
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Smokey theBear - 1960
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Longleaf Pine Savanna
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Fire – Bitterroot National Forest,Montana, August 2000
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EvergladesSurfaceWater Flow
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Forests and Deforestation
• Deforestation occurs when forest converted to another type of ecosystem
• Forests cover less than 6% of the earth’s total surface area
• Forests are the habitat for the majority of the earth’s known species
• Forests are being lost faster than they are growing
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U.S. National Forests (green) and Grasslands (yellow)
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United States Virgin Forests
1650 1926
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Global Forest Loss
• Africa has lost 30% of its forests, Brazil has lost 40%, the Philippines has lost 50% and Europe has lost 70%
• In developing nations, 10 trees are cut down for every tree planted; in Africa that ratio is 20 to 1
• FAO of the UN estimates that 100 million people in 26 countries face acute shortages of firewood
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Gathering Firewood Kutum, Africa
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SwiddenAgriculture
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Swidden Agriculture
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Swidden Agriculture
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Cattle Ranching Brazil
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Tropical Dry Forest
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Desertification
• Desertification is the conversion of grassland and savanna habitat into relatively sparse, unproductive vegetation
• The main cause of desertification is overgrazing by livestock
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RioPuercoBasinNM
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Rio Puerco Basin
1885 1977
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Rio Puerco Today
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Overgrazing – Texas and England
Left good, right overgrazed Left good, right overgrazed
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Wetlands
• Wetlands are lands that are transitional between aquatic and terrestrial ecosystems
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Freshwater Wetland Types
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General Locations of U.S. Wetlands
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Crane Species
• 1. Eurasian Crane, 2. Black-necked crane, 3. Munktrana,
• 4. Sandhill Crane,
• 5. Whooping Crane, 6. Japanese crane, 7. White-naped Crane, 8. Sarus Crane, 9. Australian Crane, 10. Siberian Crane, 11. Wattled Crane, 12. Demoiselle Crane, 13. Blue Crane, 14. Black Crowned Crane,
15. Grey Crowned Crane
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Grey Crowned Crane
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Grey Crowned Crane
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Habitat Fragmentation
• Fragmentation is the breakdown of a habitat or ecosystem into smaller patches of that habitat or ecosystem that now are isolated from each other
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HabitatFragmentation
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Charles Darwin and Alfred Russel Wallace
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The Galapagos
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Galapagos Tortoise
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Galapagos Mockingbirds
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Galapagos Mockingbirds collected by Darwin
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Malay Archipelago
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Beetles and Moths Collected by A.R. Wallace
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Butterflies from Malay Archipelago
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Sphingid Butterfly Diversity Malay Archipelago
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IslandHabitats inBaltic Sea
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Reptile and Amphibian Species Area Curve for Caribbean Islands
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Habitat IslandsIn the Great Basin
Bird Species
Mammal Species
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Ant speciesOn NewGuinea andNearbyIslands
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Real Slopes for Species-Area Curves
• Oceanic islands birds - New Guinea islands z=0.22• beetles - West Indies z=0.34• land plants - Channel islands z=0.37
• Habitat islands birds - Andes paramo z=0.29• birds - mtns of Great Basin z=0.165• mammals - mtns of Great Basin z=0.326• inverts -caves in West Virginia z=0.72
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