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Ponderosa pine --- Prescribed burning --- Colorado
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Jeffrey pine --- Vegetation management --- Growth.
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Bark beetles --- Diseases and pests --- Forest insects --- Host plants --- Lodgepole pine --- Mountain pine beetle
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An account of the symbiotic relationship between pine trees and jays. A cycle of dependency has progressed for several million years as birds have effectively planted the trees that sustain them by dispersing the seeds.
Animal-plant relationships. --- Ecology. --- Jays. --- Jays - Ecology. --- Pine. --- Jays --- Pine --- Animal-plant relationships --- Ecology
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Evaluation --- Forests and forestry --- Ponderosa pine --- Research --- Restoration ecology --- Arizona
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White pine --- Plants, Cultivated --- Adaptation --- Provenances --- Northeastern States.
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Acid deposition --- Southern pine beetle --- Southern pines --- Physiological effect --- Effect of pollution on --- Effect of atmospheric deposition on --- Georgia.
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