Stand And Tree Characteristics Influencing Density Of Fir Engraver Beetle Attack Scars In White Fir
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Author |
: George T. Ferrell |
Publisher |
: |
Total Pages |
: 16 |
Release |
: 1973 |
ISBN-10 |
: MINN:31951D02964817F |
ISBN-13 |
: |
Rating |
: 4/5 (7F Downloads) |
Synopsis Stand and Tree Characteristics Influencing Density of Fir Engraver Beetle Attack Scars in White Fir by : George T. Ferrell
Author |
: George T. Ferrell |
Publisher |
: |
Total Pages |
: 582 |
Release |
: 1972 |
ISBN-10 |
: OSU:32435073235913 |
ISBN-13 |
: |
Rating |
: 4/5 (13 Downloads) |
Synopsis Stand and Tree Characteristics Influencing Density of Fir Engraver Beetle Attack Scars in White Fir by : George T. Ferrell
Author |
: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) |
Publisher |
: |
Total Pages |
: 596 |
Release |
: 1973 |
ISBN-10 |
: WISC:89038449393 |
ISBN-13 |
: |
Rating |
: 4/5 (93 Downloads) |
Synopsis USDA Forest Service Research Paper PSW. by : Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
Author |
: |
Publisher |
: |
Total Pages |
: 430 |
Release |
: 1991 |
ISBN-10 |
: MINN:31951P006225734 |
ISBN-13 |
: |
Rating |
: 4/5 (34 Downloads) |
Synopsis Blue Mountains Forest Health Report by :
Author |
: Alan A. Berryman |
Publisher |
: Springer Science & Business Media |
Total Pages |
: 608 |
Release |
: 2013-06-29 |
ISBN-10 |
: 9781489907899 |
ISBN-13 |
: 1489907890 |
Rating |
: 4/5 (99 Downloads) |
Synopsis Dynamics of Forest Insect Populations by : Alan A. Berryman
Insects multiply. Destruction reigns. There is dismay, followed by outcry, and demands to Authority. Authority remembers its experts or appoints some: they ought to know. The experts advise a Cure. The Cure can be almost anything: holy water from Mecca, a Government Commis sion, a culture of bacteria, poison, prayers denunciatory or tactful, a new god, a trap, a Pied Piper. The Cures have only one thing in common: with a little patience they always work. They have never been known entirely to fail. Likewise they have never been known to prevent the next outbreak. For the cycle of abundance and scarcity has a rhythm of its own, and the Cures are applied just when the plague of insects is going to abate through its own loss of momentum. -Abridged, with insects in place of voles, from C. Elton, 1924, Voles, Mice and Lemmings, with permission of Oxford University Press This book is an enquiry into the "natural rhythms" of insect abundance in forested ecosystems and into the forces that give rise to these rhythms. Forests form unique environ ments for such studies because one can find them growing under relatively natural (pri meval) conditions as well as under the domination of human actions. Also, the slow growth and turnover rates of forested ecosystems enable us to investigate insect popula tion dynamics in a plant environment that remains relatively constant or changes only slowly, this in contrast to agricultural systems, where change is often drastic and frequent.
Author |
: George T. Ferrell |
Publisher |
: |
Total Pages |
: 36 |
Release |
: 1980 |
ISBN-10 |
: MINN:31951D02964043A |
ISBN-13 |
: |
Rating |
: 4/5 (3A Downloads) |
Synopsis Risk-rating Systems for Mature Red Fir and White Fir in Northern California by : George T. Ferrell
Author |
: |
Publisher |
: |
Total Pages |
: 2834 |
Release |
: 1975 |
ISBN-10 |
: UCR:31210024274464 |
ISBN-13 |
: |
Rating |
: 4/5 (64 Downloads) |
Synopsis Monthly Catalog of United States Government Publications by :
Author |
: |
Publisher |
: |
Total Pages |
: 36 |
Release |
: 1980 |
ISBN-10 |
: MINN:20000004048795 |
ISBN-13 |
: |
Rating |
: 4/5 (95 Downloads) |
Synopsis USDA Forest Service General Technical Report PSW. by :
Author |
: |
Publisher |
: |
Total Pages |
: 36 |
Release |
: 1978 |
ISBN-10 |
: UOM:39015005849115 |
ISBN-13 |
: |
Rating |
: 4/5 (15 Downloads) |
Synopsis General Technical Report PSW. by :
Author |
: United States. Superintendent of Documents |
Publisher |
: |
Total Pages |
: 1466 |
Release |
: 1976 |
ISBN-10 |
: STANFORD:36105019598577 |
ISBN-13 |
: |
Rating |
: 4/5 (77 Downloads) |
Synopsis Monthly Catalog of United States Government Publications, Cumulative Index by : United States. Superintendent of Documents