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Nature Effect of human beings on (4)

Nature conservation (4)

Human ecology (4)

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Biotic communities (3)

Intégrité écologique CongrÚs (2)

Biological diversity conservation Columbia River Basin (2)

Evolution (2)

Political ecology (2)

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Ecological integrity Canada (2)

Pacific salmon (2)

Human ecology (2)

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United States. National Park Service Management (1)

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Conservation of natural resources United States (1)

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Forests and forestry Northwest, Pacific (1)

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Environmental protection United States Citizen participation (1)

Conservation of natural resources United States (1)

Natural resources United States Management (1)

Nature conservation North America (1)

Wilderness areas Management Congresses (1)

Wildlife conservation Mongolia (1)

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Endangered species Columbia River Watershed (1)

Water quality management (1)

Ecological heterogeneity Kruger National Park (1)

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Forest policy Northwest, Pacific (1)

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National parks and reserves Research United States (1)

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(show more)

Subject: Ecosystem

Sub-subjects

Ecosystem (165 works)

Ecosystem (1 works)

Ecosystem health (1 works)

Ecosystem health United States (2 works)

Ecosystem management (10 works)

Ecosystem management Blue Ridge Mountains (1 works)

(show all 24 subjects)

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