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Take -Uunder the Endangered Species Act, take means to harrass, harm,pursue, hunt, shoot, wound, kill, trap, capture or collect an animal, or toattempt to engage in any such conduct.Taking (section 7) - implementing an action that results in take.Taxon - a category in a scientific classification system, such as class, family, orphylum.Territorial single - an unpaired owl that is defending a territory.Territory - the area that an animal defends, usually during breeding season,against intruders of its own species.Thermoregulation - the physiological and biological process whereby ananimal regulates its body temperature.Threatened species - those plant or animal species likely to become endangeredspecies throughout all or a significant portion of their range withinthe foreseeable future. A plant or animal species identified by the Secretaryof Interior as threatened, in accordance with the 1973 EndangeredSpecies Act. RGTimber classification - the following are definitions of timber classifications:1. Nonforest - land that has never supported forests and land formerlyforested where use for timber production is precluded by development orother uses.2. Forest - land at least 10 percent stocked (based on crown cover) by foresttrees of any size, or formerly having had such tree cover and not currentlydeveloped for nonforest use.3. Suitable - commercial forestland identified as appropriate for timberproduction.4. Unsuitable - forestland withdrawn from timber utilization by statue oradministrative regulation (for example, wilderness), or locally identified asnot appropriate for timber production.Timber harvest schedule - the quantity of timber planned for sale and harvest,by time period, from the area of land administered by a federalagency. The first period, usually a decade, of the selected harvest scheduleprovides the allowable sale quantity. RGTimber production - the purposeful growing, tending, harvesting, and regenerationof regulated crops of trees to be cut into logs, bolts, or other roundsections for industrial or consumer use other than for fuelwood. RGTimber stand - see stand.Timber stand improvement - measures such as thinning, pruning, releasecutting, prescribed fire, girdling, weeding, or poisoning of unwanted treesaimed at improving growing conditons for the remaining trees. RGTrophic level - the level in the food chain at which an organism sustains itself.Understory - the trees and other woody species growing under a more or lesscontinuous cover of branches and foliage formed collectively by the upperportions of adjacent trees and other woody growth. WPGUneven-aged management - the application of a combination of actionsneeded to simultaneously maintain continuous tall forest cover, recurring660
egeneration of desirable species, and the orderly growth and developmentof trees through a range of diameter or age classes. Cutting methodsthat develop and maintain uneven-aged stands are single-tree selectionand group selection. RGUnsuitable habitat - forested lands that currently do not meet the habitatneeds of spotted owls for nesting, roosting, or foraging, but are ecologicallycapable of doing so. This habitat is deficient in tree size, canopyclosure, and/or stand decadence. It results from timber harvest ornatural disturbance. Also referred to as 'potential habitat.'USDA - U.S. Department of Agriculture.USDI - U.S. Department of the Interior.Verified pair - a pair of spotted owls of specified breeding status identifiedaccording to a standard field survey procedure.Vertical diversity - the diversity in a stand that results from the complexity ofthe above ground structure of the vegetation; the more tiers of vegetationor the more diverse the species makeup (or both), the higher the degree ofvertical diversity. RG See also horizontal diversity.Viability - the ability of a population to maintain sufficient size so that itpersists over time in spite of normal fluctuations in numbers; usuallyexpressed as a probability of maintaining a specific population for aspecified period.Viable population - a population that contains an adequate number of individualsappropriately distributed to ensure the long-term existence of thespecies. RGVital rates - rates of key demographic functions within a population, such asthe birth rate and survival rate.Vole - any rodent of the genus Microtus and related genera, that resemblesrats or mice, but has a relatively short tail. NADWell distributed - a geographic distribution of habitats that maintains apopulation throughout a planning area and allows for interaction ofindividuals through periodic interbreeding and colonization of unoccupiedhabitats.West side forests - the 11 national forests within the range of the northernspotted owl in Washington, Oregon, and California that lie west of theCascade Mountain Range crest. They are the Gifford Pinchot, Mendocino,Mt. Baker-Snoqualmie, Mt. Hood, Olympic, Rogue River, Siskiyou,Siuslaw, Six Rivers, Umpqua, and Willamette National Forests. RGWetlands - areas that are inundated by surface water or groundwater with afrequency sufficient to support, and under normal circumstances do orwould support, a prevalence of vegetative or aquatic life that requiresaturated or seasonally saturated soil conditions for growth and reproduction(Executive Order 11990). RGWild and scenic rivers - those rivers or sections of rivers designated as suchby congressional action under the 1968 Wild and Scenic Rivers Act, assupplemented and amended, or those sections of rivers designated as661
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I 1.2:Sp 6/draftRecovery Plan for t
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List of FiguresTable 4.1 Abbreviate
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Recovery ObjectiveSecretary of the
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Management Rules for Designated Con
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Monitoring and Research ProgramThe
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Chapter IIntroduction1
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"Threatened species" means a specie
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B. The Interagency Scientific Commi
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lished works and many government do
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II.A. Natural History of theNorther
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I- \IzXelT - - -.11 I..., ... I.."
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spring. Territories probably are sm
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Northern goshawks (Accipiter gentil
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also use a variety of nest sites in
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Home Range SizeHome range is define
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Table 2.2. Median amounts of old-gr
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3. Life Historycannot reject the hy
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Dispersal1984, Thomas et al. 1990,
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4. ConclusionOur knowledge of the n
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Ca n a d aEastern Washington Cascad
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Table 2.3. Estimated spotted owl ha
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Table 2.4. Significant threats to t
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Table 2.5. Results of surveys for s
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isolated. In these provinces, small
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centers for 30 to 35 spotted owl te
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Southwest Washington occupies a key
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Distribution of Habitat and Populat
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Province Isolation. The eastern Was
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were in suitable habitat condition.
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Estimated acres of forest landbase:
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owned and contain little suitable h
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Vulnerability to Natural Disturbanc
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Douglas-fir/hardwood types, the lat
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miles from the contiguous populatio
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In comparison, the southern part of
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Sacramento River Canyon now provide
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On January 11, 1980, there was an a
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vation Strategy for the Northern Sp
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transfer of one area to the Grand R
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The BLM Spokane (Washington) Distri
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3. National Park ServiceThe followi
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The results of a consultation are s
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- Since landowners already face cut
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4. Cumulative Effects AssessmentThe
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Assessment, Planning, and Monitorin
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Spotted owl nesting sites and activ
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Coastal Oregon Productivity Enhance
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including wildlife. In other cases,
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Currently, the Yakima Indian Nation
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where timber harvest is limited to
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III.A. Recovery Objective and Delis
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4. The population is unlikely to ne
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Needs of other species should be co
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years. The strategy of managing for
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't0
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Finally, the plan recommends mainta
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A total of 1,181 pairs of owls has
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DKnown owlsin the OregonprovincesKn
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mologists, and representatives of o
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this prey species is an appropriate
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After 100 years residual snags will
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2. Fuelwood Gathering. If allowed,
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The application of prescriptions A,
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owls. (Refer to tables in section I
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PRESCRIPTION D -RETAIN OWLS IN MANA
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126
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DCA Management Plans.The recovery p
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Endangered Species Act) or through
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6. Costs to landowners should be re
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The real or perceived disincentives
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authority of the public body to ent
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* Use the recovery plan's recommend
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140
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Supplemental pair areas - Habitat d
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Numbers of owls currently are estim
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Biological goals and implementation
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ning. Also, several unsurveyed area
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Owl pairsKnown owlsin the province3
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- Initiate long-range planning effo
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Table 3.8. Summary comments on the
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from nonfederal lands are needed to
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Eastern Washington Cascades Provinc
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(Owl pairs140 - _ _ _ _ _ _ _ _ _ _
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habitat in DCA WD- 16. Approximatel
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Table 3.12. Summary comments on the
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Ttllwrnook/Astoria area. Provide su
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connectivity between key DCAs. This
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ITable 3.14. Summary comments on th
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crest of the Cascade Mountains. The
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ITable 3.16. Summary comments on th
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sites on federal lands (figure 3.21
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Owl pairsL I 350- _ _ . ...........
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DCAs, often combined with adjacent
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Owl pairsLiKnown owlsin the provinc
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nesting and roosting habitat until
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Option 3: Management of clusters: g
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Table 3.21. Summary of acreage and
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Owl pairs -Known owlsin the provinc
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and to within 0.5 miles of the acti
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Spotted owls have been found at 86
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ITable 3.24. Summary comments on th
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their distance from other sites. Ar
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* Recommend population and habitat
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away in some or all of the range. D
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4. What are the population dynamics
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If the monitoring and research prog
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lowlands, eastern Oregon Cascades,
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210
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Stepdown Outline1. Management Tasks
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Table 4.1 Abbreviated Cost TableThe
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continued-TaskPriorityResp. PartyCo
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218
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220
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and the number of invertebrate anim
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Table 5.2. Numbers of other species
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Amphibians and Reptiles: Larch Moun
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228
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230
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Barrows, C. W. 1980. Feeding ecolog
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Clark, R. J., D. G. Smith, and L. H
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Franklin, A. B., J. A. Blakesley, a
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Harestad, A. S., and F. L. Bunnell.
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Lundquist, R. W. and J. M. Mariani.
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O'Halloran, K. 1989. Spotted owl in
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Solis, D. M. 1980. Habitat use by n
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Young, K. D., A. B. Franklin, and J
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248
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250
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Table A.1. General approaches for e
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complete count of the territorial b
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Table A.3. Powera for various desig
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Table A.4. Illustration of a Markov
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Obviously, these statements hold on
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Table A.6. Reliability of trend est
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Demographic AnalysisAs noted earlie
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the estimate (using the simple equa
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however, we know little about the b
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Table A.8. Summary of information n
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predict the power achieved by diffe
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Other studiestached. If dispersing
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impractical at present. We describe
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Conclusionsthe year effect can be i
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280
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282
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284
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owls. Consequently, the issue of wh
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Use of the informationAssessments a
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Recent LiteratureWe might begin by
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Kerms (1989) measured habitat struc
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Hamer (pers. comm.) described 11 ne
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Table B.3. Percent hardwoods in the
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Table B.5. Comparison of habitats u
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Table B.8. Tree density (number of
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and numbers of trees, and percent o
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Under this hypothesis, owl fitness
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suitable habitat for that region (m
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ResultsDiscussionspotted owl habita
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__Discussiondata from 41 sites in t
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Recommendations for Future Research
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314
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Hamer, T. 1988. Home range size of
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318
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320
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Parameter Estimatesfor Individual S
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provided in Table C. 5. Study of th
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Table C.6. Summary of statistics re
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3. ConclusionsThis source of bias i
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330
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Gray Wolf .........................
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formed during the initial meeting t
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provide habitat for the numerous sp
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The ApproachA committee of the Reco
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The List of Threatened and Endanger
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Mammalsoldest trees in a stand. Eig
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ABBFigure D. 1. Distribution of: a)
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KTable D.3. A list of threatened an
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Fishestheir dispersal capabilities
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OlympicNorthcoastalRockyMountainSou
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continued-StatusabState Considered
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continued-SpeciesColumbia sidebandM
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endemic to the Pacific Northwest).
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------continued-SpeciesRhyacophila
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continued-SpeciesFed3tatusa bStateW
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StatusasbOld ForestState Associatio
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Summaryspores (Maser et al. 1978b).
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Biology of Owl Prey, Older Forest A
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Woodrats.-The dusky-footed woodrat
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and are less restrictive under stat
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Stock concept.-The term "stock" was
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Table D.10. List of fish stocks of
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continued-Steelhead-owipu Sea-runTr
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continued-BasinHoodWillametteRogueS
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Table D.13. Washington streams (or
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inland distribution currently decre
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nesting territories in the three st
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However, little is known about the
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Fisher (Martes penncmti)Distributio
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at one time supported marten popula
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each population of these animals is
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species also is found under the bar
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few meters from water after heavy r
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In considering the needs of other s
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Barrows, C. W. 1981. Roost selectio
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Clark, T. W., E. Anderson, C. Dougl
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Hamer, T. E. 1991. Habitat relation
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Mannan, R. W., E. C. Meslow, and H.
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Oakley, A. L., Collins, J. A., Ever
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Solis, D. M. 1983. Summer habitat e
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Washington Natural Heritage Program
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414
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f. Wilderness.g. Livestock grazing.
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I. Monitoring.1. Northern spotted o
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420
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here will reduce some of that habit
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424
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426
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Selection of Forest TypesAt the tim
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eceive as little as 25 inches. Disc
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A. FireThe combination and interact
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Table F.4. Important forest insects
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continued-Common Name Causal Agent
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D. DiseasesForest diseases in the P
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continued-Common Name Causal Agent
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continued-Common Name Causal Agent
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III. Forest Protection in theWest C
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120 100200 500I~~~~.K446Figure F.4.
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InsectsDiseasesInsects in this subr
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__hardwoods are immune. Shade toler
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pests (Schowalter 1988). Black stai
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tion and initial attack. If manipul
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log and snag density was likely low
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B. Management Effects on StandsMana
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units (underburning or lop/scatter)
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In the higher elevation White Fir a
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growth often increases (Reinhardt a
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50rcc4*0-cC)2M CmZ13010-yearI ,...*
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In the East Cascades subregion fore
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The introduced disease, white pine
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VI. Conclusionsmortality will resul
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Baker, F.A. 1988. The influence of
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Habeck, J.R. 1990. Old-growth ponde
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Perry, D.A., and J.G. Borchers. 199
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Weatherspoon, C.P., and C.N. Skinne
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482
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484
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area, structure, ages, location; ne
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Stand AFigure G.2. A--unthmnned Dou
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figure 0.3. Effects of thinning Dou
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II. Review of Natural Vegetation an
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western hemlock, and sometimes othe
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year intervals (Appendix F). With t
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Live crown ratiobecent)6050IStand A
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Basal area growth continued to incr
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technology probably will allow some
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Stand A. No activities (west side 3
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Stand A. No activities (west side o
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acre, 4 to 12 inches in diameter),
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allow redwood sprout clumps maximum
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KAge 15 years - 511 trees per acre,
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6Stems per acre100 _ Stand A. Natur
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Basal Area(square feetper acre)50 1
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* Opening the canopy in small patch
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Drew, T.J. and J.W. Flewelling. 197
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Miller, R.E.; D.L. Reukema, and R.L
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Tappeiner, J.C., P.M. McDonald, and
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526
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528
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6. Timber supply curve and economic
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scientifically credible biological
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E. Summary of Preliminary Estimates
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II. General Economic Principles for
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practices may be able to show how s
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Economic patterns show the efficien
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The sustainable yield concept that
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A. Previously Estimated Economic Co
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County receipts were estimated to d
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B. Potential Social Costs of Owl Co
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The contrast between the behavior d
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0U1 n1nDTable H.2. Economic depende
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cḻlTable H.4. Economic characteri
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An analysis completed by the State
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V. Preliminary Evaluation of the Ec
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25-° 20/0M 15-a)CLU)0 10-0CL 5 -0)
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25 -- 20-0co/o 15--Da)a0a)10m~ C) 5
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forestlands. The costs of productio
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In Figure H.8, the equilibrium betw
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foregone and the way they will save
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The income created by the purchase
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Two concepts are useful for underst
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y an estimate of the price that wou
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Table H.10. Comparison of timber em
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of the second year. The same assump
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are generally much lower than for c
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582
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studies at University of Washington
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586
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Most significant late successionall
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to evaluate options. Information in
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Q0Table 1.1. Estimated acres and ow
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soTable 1.3. Estimated acres and ow
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01CDarTable 1.5. Size class distrib
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Table 1.8. Frequency distribution o
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Page 616 and 617:
Literature CitedThomas, J.W., E.D.
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602
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- The overlap of home ranges among
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Page 622 and 623:
Table J.2. Acreage and owl numbers
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continuedDCA Land AcreageIdent. Sta
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Table J.4. Acreage and owl numbers
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Table J.5. Acreage and owl numbers
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Table J.6. Acreage and owl numbers
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Page 632 and 633:
Table J.7. Acreage and owl numbers
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Table J.9. Acrea ?e and owl numbers
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Page 636 and 637:
Table J.10. Acreage and owl numbers
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continued-DCA LandIdent. StatusAcre
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-DCAIdent.LandStatusAcreageNRF Tota
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626
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Experience Includes: Assistant Dire
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Education: B.S. in forestry from Or
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Team SupportCharles Bruce, Oregon D
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continued-1 5-24-91 Other SpeciesSu
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continued-9-16 thru9-20-919-19-91Sp
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Perry, D. 1991. The ecology of coar
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2mandate the achievement of recover
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642
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644
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Aspect - the direction a slope face
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Congressionally classified and desi
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Empirical - derived from direct obs
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Hummocky - a landscape characterize
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Mixed conifer - as used in this doc
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Potential habitat - a stand of tree
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Sensitive species - those species t
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Page 678:
wild, scenic, or recreational by an
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