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| The amount of diversity in the aquatic kingdom. |
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| Value of an organism, species, ecosystem, or the earth's biodiversity based on its existence, regardless of whether it has any usefulness to humans. |
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Definition
| Value of an organism, species, ecosystem, or the earth's biodiversity based on its usefulness to humans. |
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| Kowing that a redwood forest, wilderness, or endangered species exist, even if we will never see it or get direct use from it. |
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Definition
| Many people appreciate a tree, a forest, a wild species, or a vista because of its beauty. |
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Definition
| It is based on the willingness of some people to pay to protect some forms of natural capital to ensure their availability for use by future generations. |
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Definition
| Consists of 155 forests, and 22 grasslands. They are used for logging, mining, livestock grazing, farming, oil and gas extraction, recreation, hunting, fishing, and conservation of watershed, soil, and wildlife. |
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Definition
| These lands are used primarily for mining, oil and gas extraction, and livestock. |
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Term
| National Wildlife Refuges |
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Definition
| Most refuges protect habitats and breeding areas for waterfowl and big game to provide a harvestable supply for hunters; a few protect endangered species from extinction. |
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Definition
| Includes 58 major parks and 331 national recreation areas, monuments, memorials, battlefields, historic sites, parkways, trails, rivers, seashores, and lakeshores. |
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Term
| National Wilderness Preservation |
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Definition
| The most restricted public lands are 660 roadless areas. These areas lie within the national parks, national wildlife refuges, national forest, and national resource lands and are managed by the agencies in charge of those lands. |
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Definition
| An uncut or regenerated forest that has not been seriously disturbed by human activities or natural disasters for at least several hundred years. They are storehouses of biodiversity because they provide ecological niches for a multitude of wildlife species. |
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Definition
| A stand of trees resulting from secondary ecological succession. These forests develop after the trees in an area have been removed by human activities or by natural forces. |
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Term
Tree Plantation
or
Tree Farm |
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Definition
| This is one of the three types of forest that contains uniformly aged trees of one or two species that are harvested by clear-cutting as soon as they become commercially valuable. The land is then replanted and clear-cut again in a regular cycle. |
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Term
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Definition
| Trees in a given stand are maintained at about the same age and size. With this approach, it replaces a biologically diverse old-growth or second-growth forest. The plantation contains one or two fast-growing trees. |
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Term
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Definition
| A stand includes a variety of tree species with many ages and sizes, in an effort to foster natural regeneration. The goals of this type of managment are biodiversity, long-term sustainable production of high-quality timber, selective cutting of individual mature trees, wildlife, watershed protection, and recreation. |
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Term
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Definition
Intermediate-aged or mature trees in an uneven-aged forest are cut singly or in small groups.
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Term
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Definition
| All trees on a site are removed in a single cut.[image] |
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Definition
A cut in which trees are removed in a series of cuts designed to achieve a new even-aged stand under the shelter of remaining trees.
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Term
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Definition
A cutting with a system that involves removing most trees from a stand and leaving only a few trees behind to produce seed for regeneration of an even-aged forest.
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Term
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Definition
It is a type of clear-cutting variation that can allow a more sustainable timber yield without widespread destruction. It involves clear-cutting a strip of trees along the contour of the land with the corridor narrow enough to allow natural regeneration within a few years. After regeneration, they cut down another strip above the first and so on.
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Term
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Definition
| Is the temporary or permanent removal of large expanses of forest for agriculture or other uses. |
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Definition
| Fires that usually burn only undergrowth and leaf litter on the forest floor. |
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Term
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Definition
| These are extremely hot fires that may start on the ground but eventually burn whole trees and leap from treetop to treetop. |
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Term
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Definition
| Fires that will go underground and burn partially decayed leaves or peat. |
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Term
| Healthy Forests Restoration Act |
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Definition
| Under this law, timber companies are allowed to cut down economically valuable medium-size and large trees in most national forests in return for clearing away smaller, more fire-prone trees and underbrush. The law also exempts most thinning protects from environmental reviews and appeals currently requires by forest protection laws. |
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Term
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Definition
| The U.S. national park system, established in 1992, includes 58 national parks. |
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Definition
| With more than 1 million members worldwide-has created the world's largest system of private natural areas and wildlife sanctuaries in 30 countries. |
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Term
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Definition
| This means protecting an inner core of a reserve by establishing two buffer zones in which local people can extract resources sustainably, in ways that do not harm the inner core. |
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Term
| Adaptive Ecosystem Managment |
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Definition
1) Intergrate ecological, economic, and social principles to help maintain and restore the sustainability and biological diversity of reseves while supporting sustainable economies and communities.
2)Seek ways to get govenrment agencies, private conservation organizations, scientist, business interests, and private landowners to reach a consensus on how to achieve common conservation objectives.
3) View all decisions and strategies as scientific and social experiements, and use failures as opportunites for learning and improvement.
4)Emphasize continual informational gathering, monitoring, reassessment, flexibility, adaptation, and innovation in the face of uncertainty and usually unpredictable change. |
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Term
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Definition
| The process of repairing damage caused by humans to the biodiversity and dynamics of natural ecosystems. |
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Term
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Definition
| Janzen's vision to have the nearly 40,000 people who live near the park become an essential part of the restoration of the degraded forest. |
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