Recovery Plan for the Northern Spotted Owl - DRAFT
Recovery Plan for the Northern Spotted Owl - DRAFT Recovery Plan for the Northern Spotted Owl - DRAFT
25-° 20/0M 15-a)CLU)0 10-0CL 5 -0)0 200 400 600 800 1,200 1,600 2,000Annual rate of production --- -11.1.1 .... 111.1 ..................... - - ...I...................................... ------- -.11111-Figure H.2. Tifnber supply curve derlvedfrom Table 7.The second supply curve also could represent the supply curve in a region inwhich lands with low cost timber were held off the market. Prohibiting timberharvests on sites with relatively low costs shifts the supply curve to the left forall higher costs. Table H.8 shows the supply schedule from Table H.7 recalculatedto reflect the removal of sites 1 and 2. Figure H.4 shows the supply curvederived from Table H.8. As a comparison of Figures H.2 and H.4 shows,policies that remove harvestable timber from the timber resource base generallycan be represented by a leftward shift in the supply curve from SO to S. asshown in Figure H.5. This is particularly true if low cost sources of timber aremade unavailable for harvest.PS Timber-poor regiona)CD*0 cis0 2-Da)0.U)oS Timber-rich region0)a-)Annual rate of productionQFigure H.3. Timber supply curves.560
Table H.7. Derivation of timber supply curve.Potential Timber Production Potential Timber Production Supplyby Site and Cost by Cost ScheduleProductionSite Cost Production Cost Production Price (units per(dollars per unit) (units) (dollars per unit) (units) (dollars per unit) year)1 5 200 5 450 5 4501011010510109601515475151,4352050 20300201,7352500025140251,875251015275205025 203550o 010015020100255045250104001515020502520550100150201002550111.11 .....-.......I...111.1111 .1.11 I -Table H.8. Effect of restricted timber availability on derivation of timber supply curve.\Potential Timber Productionby Site and CostPotential Timber Productionby CostSupplyScheduleSiteCost(dollars per unit)Production(units)Cost(dollars per unit)Production(units)Price(dollars per unit)Production(units peryear)2345510152025510152025510152025510152025510152025000000000000010050250400150502000010050I'll -1- 1.1- 111- 11" .." .., ... 11 ......510152025250400150250120510152025........... I....... ........... ....I..................................................................... ..11 I I ----... 1 .1.1 11,2506508001,0501,170JI561
- Page 526 and 527: allow redwood sprout clumps maximum
- Page 528 and 529: KAge 15 years - 511 trees per acre,
- Page 530 and 531: 6Stems per acre100 _ Stand A. Natur
- Page 532 and 533: Basal Area(square feetper acre)50 1
- Page 534 and 535: * Opening the canopy in small patch
- Page 536 and 537: Drew, T.J. and J.W. Flewelling. 197
- Page 538 and 539: Miller, R.E.; D.L. Reukema, and R.L
- Page 540 and 541: Tappeiner, J.C., P.M. McDonald, and
- Page 542 and 543: 526
- Page 544 and 545: 528
- Page 546 and 547: 6. Timber supply curve and economic
- Page 548 and 549: scientifically credible biological
- Page 550 and 551: E. Summary of Preliminary Estimates
- Page 552 and 553: II. General Economic Principles for
- Page 554 and 555: practices may be able to show how s
- Page 556 and 557: Economic patterns show the efficien
- Page 558 and 559: The sustainable yield concept that
- Page 560 and 561: A. Previously Estimated Economic Co
- Page 562 and 563: County receipts were estimated to d
- Page 564 and 565: B. Potential Social Costs of Owl Co
- Page 566 and 567: The contrast between the behavior d
- Page 568 and 569: 0U1 n1nDTable H.2. Economic depende
- Page 570 and 571: cḻlTable H.4. Economic characteri
- Page 572 and 573: An analysis completed by the State
- Page 574 and 575: V. Preliminary Evaluation of the Ec
- Page 578 and 579: 25 -- 20-0co/o 15--Da)a0a)10m~ C) 5
- Page 580 and 581: forestlands. The costs of productio
- Page 582 and 583: In Figure H.8, the equilibrium betw
- Page 584 and 585: foregone and the way they will save
- Page 586 and 587: The income created by the purchase
- Page 588 and 589: Two concepts are useful for underst
- Page 590 and 591: y an estimate of the price that wou
- Page 592 and 593: Table H.10. Comparison of timber em
- Page 594 and 595: of the second year. The same assump
- Page 596 and 597: are generally much lower than for c
- Page 598 and 599: 582
- Page 600 and 601: studies at University of Washington
- Page 602 and 603: 586
- Page 604 and 605: Most significant late successionall
- Page 606 and 607: to evaluate options. Information in
- Page 608 and 609: Q0Table 1.1. Estimated acres and ow
- Page 610 and 611: soTable 1.3. Estimated acres and ow
- Page 612 and 613: 01CDarTable 1.5. Size class distrib
- Page 614 and 615: Table 1.8. Frequency distribution o
- Page 616 and 617: Literature CitedThomas, J.W., E.D.
- Page 618 and 619: 602
- Page 620 and 621: - The overlap of home ranges among
- Page 622 and 623: Table J.2. Acreage and owl numbers
- Page 624 and 625: continuedDCA Land AcreageIdent. Sta
Table H.7. Derivation of timber supply curve.Potential Timber Production Potential Timber Production Supplyby Site and Cost by Cost ScheduleProductionSite Cost Production Cost Production Price (units per(dollars per unit) (units) (dollars per unit) (units) (dollars per unit) year)1 5 200 5 450 5 4501011010510109601515475151,4352050 20300201,7352500025140251,875251015275205025 203550o 010015020100255045250104001515020502520550100150201002550111.11 .....-.......I...111.1111 .1.11 I -Table H.8. Effect of restricted timber availability on derivation of timber supply curve.\Potential Timber Productionby Site and CostPotential Timber Productionby CostSupplyScheduleSiteCost(dollars per unit)Production(units)Cost(dollars per unit)Production(units)Price(dollars per unit)Production(units peryear)2345510152025510152025510152025510152025510152025000000000000010050250400150502000010050I'll -1- 1.1- 111- 11" .." .., ... 11 ......510152025250400150250120510152025........... I....... ........... ....I..................................................................... ..11 I I ----... 1 .1.1 11,2506508001,0501,170JI561
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