Chapter 10: Sustaining Terrestrial Biodiversity: The Ecosystem Approach

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53 Terms

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Human activities
________ degrade or overuse 60 % of the earths natural services.
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Tropical forests
________: Especially in Latin America, Indonesia, and Africa.
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Old-growth or primary forest (36%)
Uncut, or not disturbed for several hundred years
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Ecological niche
Reservoirs of biodiversity
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Second-growth forest (60%)
Secondary ecological succession
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Selective cutting
Intermediate-aged or mature trees are cut singly or in small groups
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Clear-cutting
Removal of all trees from an area
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Strip cutting
Clear-cutting a strip of trees along the contour of the land
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Surface fires
Usually burn leaf litter and undergrowth
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Crown fires
Extremely hot so it burns whole trees, kill wildlife, and increase soil erosion
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Global warming
Rising temperatures, trees become more susceptible to diseases and pests, drier forests have more fires, increase in greenhouse gases
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Tropical forests
Especially in Latin America, Indonesia, and Africa
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Boreal forests
A coniferous forest consisting primarily of pine, spruce, and larch trees
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Collins Pine
Owns and manages protective timberland
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Forest Stewardship Council
Developed a list of environmentally sound practices
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Prescribed Fires
Carefully planned & monitored
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Allow fires on public lands to burn
Removes flammable underbrush & smaller trees
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Protect structures in fire-prone areas
Eliminate the use of flammable construction materials
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Thin forests in fire-prone areas
Clear away small fire-prone trees & underbrush under environmental controls
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Slash
Highly flammable debris
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Rangelands
Unfenced grasslands in temperate and tropical climates that provide forage for animals
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Pastures
Managed grasslands and fences meadows used for grazing livestock
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Overgrazing of rangelands
Reduces grass cover, leads to erosion of soil by water and wind, the soil becomes compacted and enhances invasion of plant species that cattle wont eat
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Wilderness
Land officially designated as having no serious disturbance from human activities
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Wilderness Act of 1964
Protects undeveloped lands, 2% of the lower 48 protected, mostly in the West
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U.N. Millennium Ecosystem Assessment
Identify key ecosystem services
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Reconciliation ecology
Invent and maintain habitats for species diversity where people live, work, and play
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Community-based conservation
Belize and the black howler monkeys and protects vital insect pollinators
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Old-growth or primary forest (36%)
Uncut, or not disturbed for several hundred years
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Ecological niche
Reservoirs of biodiversity
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Second-growth forest (60%)
Secondary ecological succession
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Tree plantation (tree farm, commercial forest- 4%)
May supply most industrial wood in the future. 1 or 2 species of the same age
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Selective cutting
Intermediate-aged or mature trees are cut singly or in small groups
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Clear-cutting
Removal of all trees from an area. Most efficient for logging operations to harvest trees and cost
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Strip cutting
Clear-cutting a strip of trees along the contour of the land
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Surface fires
Usually burn leaf litter and undergrowth. May provide food in the form of vegetation that sprouts after fire
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Crown fires
Extremely hot so it burns whole trees, kill wildlife, and increase soil erosion
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Global warming
Rising temperatures, trees become more susceptible to diseases and pests, drier forests have more fires, increase in greenhouse gases
39
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Tropical forests
Especially in Latin America, Indonesia, and Africa. The main reason for 8,000 tree species are threatened with extinction (10% of the world rate)
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Boreal forests
A coniferous forest consisting primarily of pine, spruce, and larch trees. That is in Alaska, Canada, Scandinavia, and Russia
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Collins Pine
Owns and manages protective timberland
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Forest Stewardship Council
Developed a list of environmentally sound practices. Also certifies manufacturers of wood products
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Prescribed Fires
Carefully planned & monitored. Set small contained surface fires to remove flammable small trees and underbrush
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Protect structures in fire-prone areas
Eliminate the use of flammable construction materials. Thinning a zone of 60m (200ft) around fire-prone areas
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Thin forests in fire-prone areas
Clear away small fire-prone trees & underbrush under environmental controls. Can leave-behind slash.
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Slash
Highly flammable debris
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Rangelands
Unfenced grasslands in temperate and tropical climates that provide forage for animals
48
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Pastures
Managed grasslands and fences meadows used for grazing livestock
49
New cards
Overgrazing of rangelands
Reduces grass cover, leads to erosion of soil by water and wind, the soil becomes compacted and enhances invasion of plant species that cattle won’t eat.
50
New cards
Wilderness Act of 1964
Protects undeveloped lands, 2% of the lower 48 protected, mostly in the West.
51
New cards
U.N. Millennium Ecosystem Assessment
Identify key ecosystem services. Human activities degrade or overuse 60% of the earth’s natural services
52
New cards
Reconciliation ecology
Invent and maintain habitats for species diversity where people live, work, and play
53
New cards
Community-based conservation
Belize and the black howler monkeys protects vital insect pollinators