ENVIRONMENTAL CONSEQUENCES in rocky mountain coniferous ...

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of the commercial forest land in the region. In addition, the stand occurs on one of the more productive Douglas-fir habitat types (Pseudotsuga menziesid/Vacc~n~m caespihoswnl, and represents an operating situation and management opportunity in which intensive utilization is likely to occur first. The mixed size and age classes provide an opportunity for a range of silvicultural and utilization options. Major management objectives for timbered 1 ands represented by the site include: --reducing probability of catastrophic insect and disease damage; --achieving acceptable stand regeneration and development and retaining species diversity; --in parti a1 cuts, improvinq the residual stand through selective thinning; --protecting esthetic, recreation, and wildlife values; --avoiding adverse biological impacts on the forest ecosystem. Harvesting treatments to be tested were developed to include combinations of si lvicul tural practices, utilization level s, and post-harvest site treatments that could be considered management alternatives. Silvicultural prescriptions applied to harvest units included (1) Selection cutting--harvesting approximately half of the rnerchantabl e volume, 1 eaving a designated overstory o f small saw timber and pole stems. Dense sapling and pole stands were selectively thinned. The treatment represents current common practice in such stands. (2) Understory removal --removal of approximately half of the merchantable volume (and up to 213 of total cubic volume), leaving a designated overstory of the better sawtimber and large pole stems. (3) Overstory removal --removal of a1 1 sawtimber trees and thinning pole stands, leaving the seedling-sapling- small pole stems as a residual stand. (4) Clearcutting--harvesting a1 1 trees designated as rner- chantable under the specified utilization standard. All other trees on the unit were slashed and treated as prescri bed. Four cutting units totaling approximately 60 acres (24 ha) were harvested, one under each of the described silvicultural prescriptions (fig. 4). Three o f the units-- those designated for clearcut, overstory removal, and understary removal--were further sub-divided into three treatment areas for application of varying utilization and site treatment practices. Uti 1 ization standards tested included conventional saw1 og uti 1 ization and near-compl ete fiber uti 1 ization (table 2) ; post-harvest treatments included broadcast burning (fig. 5) and leaving residues scattered on the site.
Understory Removal Figure 4.--EccperimentaZZy harvested units on the Lubrecht study site inczuded clearcut, overs tory removal, and understory rmovaZ siZvicuZtura2 prescriptions, under uhich intensive ZeveZs of utiZi- zation were practCced. IntensCve utiZizat
Page 1 and 2: ENVIRONMENTAL CONSEQUENCES OF TIMBE
Page 3 and 4: USDA Forest Service General Technic
Page 5 and 6: REW 'ORD One of the pressing proble
Page 7 and 8: BIOLOGICAL IMPLICATIONS Biological
Page 9 and 10: By the mid-1 960's the apparently u
Page 11 and 12: Scientist, audience: "The Three-Mil
Page 13 and 14: I believe that the future of forest
Page 15 and 16: enewable resource that can be proce
Page 17 and 18: productive capacity. Recent legisla
Page 19 and 20: Much of the research investigating
Page 21: Six sale area blocks were logged (f
Page 25 and 26: Gentle slopes and easy access to cu
Page 27 and 28: Each of the four cutting units was
Page 29 and 30: A concerted effort was made to coor
Page 31 and 32: oriented toward the basic response
Page 33 and 34: WOODY MATERIAL IN NORTHERN ROCKY MO
Page 35 and 36: STANDING, 3 " 1 DIA. ? (GREEN & DEA
Page 37 and 38: I 11 Table 1,--Volume of wood by co
Page 39 and 40: Small material under 3 inch (7.6 cm
Page 41 and 42: Depending on the cutting and treatm
Page 43 and 44: MICROENVIRONMENTAL RESPONSE TO HARV
Page 45 and 46: I Where: Cs is the concentration at
Page 47 and 48: Figure I.-- Residue treatments used
Page 49 and 50: HARVESTING AND RESIDUE INFLUENCES R
Page 51 and 52: I 1 1 1 1 1 1 1 1 1 1 1 JAN. FEB. M
Page 53 and 54: Sensible heat flux, evaporative flu
Page 55 and 56: SOLO, 1977- 78 UNCUT CUT Mean max.
Page 57 and 58: It is logical that if surface tempe
Page 59 and 60: 0 - 5 - 10 - 15 20 - Chips - Clrare
Page 61 and 62: Brown, crumbly, decayed material (B
Page 63 and 64: At Coram, steep harvested slopes ha
Page 65 and 66: surface of unburned and hard-burned
Page 67 and 68: canopy. Light then indirectly cause
Page 69 and 70: Moisture Moisture is frequently ide
Page 71 and 72: Net radiation--the measure of the a
Page 73 and 74:
Table 5.--Possible solutions for po
Page 75 and 76:
Cochran, P. H. 1969. Thermal proper
Page 77 and 78:
Lommen, P. W., Cr, R. Schwintzer, C
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Stark, Nel 1 ie. 1980. The impacts
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and water use during the growing se
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The main study site (fig. 1) occupi
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The four residues util i zation tre
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RAIN The major precipitation instru
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Figure 5.--SG,L. wuwr zc)as measure
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S treamf 1 ow A &foot H-flume was i
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Figure 7.--Snow water equivalent on
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Soi 1 Water Water present in the so
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SILVICULTURE TREATMENTS Si 1 vicul
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As indicated in figure 11 and appen
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The most consistent difference in w
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MEAN CONSUMPTIVE USE -ALL YEARS (19
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Lowest daily water use occurred at
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6. Water use began in Apri 1 , acce
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Klages, M. G., R. C. McConnell , an
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APPENDICES Appendix A.--Hydrograph
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Appendix C.--Rainfall reaching the
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Appendix E.--Water use during the g
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One of the most efficient methods o
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Control Chipped Picked up Broadcast
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Control Chapped Picked up Broadcast
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Control Chipped Picked up Broadcast
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' Control Chipped and Picked up and
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One of the least detrimental residu
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INTRODUCTION In the early days, the
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%pire 1.--Measured concentrations (
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The silvicul tural treatments appli
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I 2 Table 2. --Percent of total qua
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Unmerchantable TOP Shrubs Lower Cro
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create a nitrogen deficiency during
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Steele, R. W. 1975. Understory burn
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National Forest. This paper summari
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UNIT 2 CONVENT IONALLY Du Bois, Wyo
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Trees Figures 3 and 4 show the oven
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Weights of typical trees on these t
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pi1 ed-burned treatments were lowes
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MINERAL SOIL Total nutrient content
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Tab1 e 5. --Concentrations of avai
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Table 6. --Average concentrations o
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sites. Burning then transformed the
Page 161 and 162:
RESIDUE DECAY PROCESSES AND ASSOCIA
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The hardwood or angiospermous timbe
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Woody Substrates Gyrnnospermsr (Int
Page 167 and 168:
Natural inoculation of residues may
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On the Coram site, brown-rot fungi
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Table 2.--Probability (P) of encoun
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Recognizable brown-cubical decayed
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I Newly formed, small-dimension res
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Highley, T. L. 1976. Hemicellulases
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MICROBIAL PROCESSES ASSOCIATED WITH
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Nonsymbiotic N Fixation Free-1 ivin
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In a previous paper (Jurgensen and
Page 185 and 186:
Symbiotic N Fixation The establishm
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carbon and NHq (Ahlgren, 1974). Mic
Page 189 and 190:
Prescribed f~re CLEARCUT - BURN CLE
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Hungerford, R.9. 1980. Microenvi ro
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ECOLOGY OF ECTOMYCORRHIZAE IN NORTH
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Coram - Subalpine fir Site (ABLAICL
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Figure 2.-- ReZative yield capabiZi
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Figure 5. -- Percentage of soCZ-woo
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Figure 9,-- Percentage of toid ectm
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Effect of Soil Components on Ectomy
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Effect of Organic Matter Quantity o
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PARTIAL CUT Effect of Harvesting on
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Figure 20. -- Average nwnbers of ac
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Gijbl , F. 1967. Mykorrhizauntersuc
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BIOLOGICAL IMPLICATIONS Initial cha
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FOREST SOIL BIOLOGY The act of incr
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the soil will retain its ability to
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Since the best quantity of organic
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We can also visualize situations on
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Harvey, A. E., M. F. Jurgensen, and
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INTRODUCTION Vegetation integrates
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Because of cool, wet weather in 197
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We determined volume and cover usin
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The stems were divided at 4 mm (0.1
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RESIDUES TREATMENT EFFECTS As descr
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Overall shrub recovery rates do not
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Rose behaved similar to ninebark (f
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Meanwhile, small shrub cover change
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Biomass Regression analyses relatin
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SILVICULTURE TREATMENT EFFECTS Harv
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RESIDUES TREATMENT EFFECTS Major sh
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Lesser vegetation--herbs and small
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Leaf and stem components of the shr
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APPENDIX I Trees and shrubs found o
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INTRODUCTION Many western larch (La
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Figure 2. --Lower cutting blocks on
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each permanent point) of the clearc
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Figure 3.--Marking gemination and c
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were not significant. These treatme
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Tab1 e 2. --Fi 11 ed conifer seed (
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Dispersal of sound seed on the uppe
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Table $.--Number of 3- and 5-year-o
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Table 6. --Germination of conifers
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Survival, growth and form will be m
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Es tab1 ishment and Initial Develop
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to the amount of residue originally
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As the following tabulation shows,
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Soot-Seeded Broadcast burning, and
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Natural Regeneration Natural regene
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.4s shown in fig. 5, vegetation was
Page 285 and 286:
Interestingly, the high phenol leve
Page 287 and 288:
DeByle, Norbert V. 1980. Harvesting
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EFFECT OF SILVICULTURAL PRACTICES,
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mountain pine beetle. These two for
Page 293 and 294:
GROUP SELECTION 22 CONTROL SHELTERW
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FIELD AND LABORATORY PROCEDURES To
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I Many of the groups were trapped v
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shelterwood with residues, were sig
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HARVESTING AND RESIDUE MANAGEMENT T
Page 303 and 304:
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indicate a treatment effect of burn
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Undisturbed Forest .". . . . Clearc
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1 equally abundant in all treatment
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I not seem to be directly caused by
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the undisturbed forests. Some resea
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Huhta, V., E. Karppinen, M. Nurmine
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POPULATIONS OF SOME FOREST LITTER,
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STUDY DESIGN The study area is loca
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GROUP SELECTION 22 CONTROL '... . .
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Sampling in 1977 was restricted to
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Table 1 .--Mean total mesofauna pop
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0 - (JUNE) from S helterwood (AUGUS
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SHELTERWOOD--RESIDUE BURNED The eff
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In the first season or two followin
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LITERATURE CITED Ahlgren, I. F. 197
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A REVIEW OF SOME INTERACTIONS BETWE
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and Keen 1960; Felix and others 197
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Pissodes strobi Peck, In a thinned
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foresters feel as though "It's 1 i
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The large aerial spray programs aga
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Weakened living trees, or trees kil
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Most western pine beetle attacks in
Page 351 and 352:
The galleries, or mines, of wood bo
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Other wood borers. --Several specie
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Deterioration of spruce (Picea a. )
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The eruption of Mount Saint Helens
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Bark and engraver beetles infesting
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In the northern Rockies, one conife
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management, and not the beetle." If
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investigation regardin controlled b
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WOOD BORERS Mitchell and Martin (In
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Still, by 1938, there was a feeling
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I Different i nvesti gators have us
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if the forest floor is completely c
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Carabids as biological control agen
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een placed for protection from rode
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with every tree in the stand contin
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Spiders as predators.--Studies have
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At least two studies have been made
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In the long-leaf pine forests in th
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RESIDUES, FIRES, INSECTS, AND FORES
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In the spruce-fir stands infested w
Page 391 and 392:
Recently, Senator John Me1 cher (Mo
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plans. Since fire, too, is a decomp
Page 395 and 396:
CHANGING FOREST INSECT PROBLEMS Ins
Page 397 and 398:
Basham, J. T. 1957. The deteriorati
Page 399 and 400:
Cole, D. M. 1978. Feasibility of si
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Fellin, D. G. and P. C. Johnson. 19
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Graham, S. A. 1922. Some entomoloqi
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Huhta, V., M. Nurminen and A. Valpa
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Lawrence, W. H. and 3. H. Rediske.
Page 409 and 410:
Miller, J. M. and J. E. Patterson.
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Rice, L * A. 1932. The effect of fi
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Stoddard, H. L. Sr. 1963. Bird habi
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Weaver, Harol d. 1951. Fire as an e
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RESOURCE MANAGEMENT IMPLICATIONS Th
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INFLUENCE OF HARVESTING AND RESIDUE
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F
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NEAR COMPLETE Figure 2.--Byrmnts f
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Figure 3.-- Bymrmrs fireZine intens
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F5qure 4. --Byramrs fireZ-Cne inten
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1. Nomographs of Rate of Spread, Fi
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3. Consider other fire-related fact
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Puckett, John V., Cameron M. Johnst
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Important and rapid progress has be
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tlarvested Areas What happened when
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UNCUT SHELTERWOOD Protect understor
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Initially the areas are rated low.
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The primary reason for this discrep
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f n contrast to displaced bears, so
Page 447 and 448:
Quantitative data on grizzly behavi
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Asherin, Duane A. 1976. Changes in
Page 451 and 452:
Leege, Thomas A. 1969. Burning sera
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Reynolds, Hudson G. 1969. Aspen gro
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INFLUENCES OF HARVESTING AND RESIDU
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CLEARCUT LOGGING & COMPLETE BURN DE
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C LEARCUT LOGGING & BROADCAST BURN
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EFFECTS OF SMALL MAMMALS ON FOREST
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I I Habitat Manipulation Small mamm
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Fala, Robert A. 1975. Effects of pr
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Tevis, Lloyd Jr. l956b. Pocket goph
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forests are cavity nesters. They ar
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GROUP SELECTION: A1 1 merchantab le
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TABLE 3. Pre- and post-logging volu
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Censuses Censuses for all species (
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Fbgure 6.-- Lightn
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Pileated Woodpeckers on the CEF nes
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TABLE 7. Percent of sampling time t
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I Observed woodpecker feeding Down,
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Table 9 shows feeding time in the l
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L c - 10- ul 2 0 8- 6 - 4 2 - - 0 .
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Figure 15. -- A Hairy Woodpecker ne
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~
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oth offered advice on study site se
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Hairy Woodpecker Downy Woodpecker B
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THE SITUATION Forest land managers
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In the descriptive approach, howeve
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ORGANIZING INFORMATION One differen
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As has already been stated, the for
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Figure 7.--Matrix of interactions b
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understory biomass density, X2 repr
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or, by rearrangement, AX. I afi Ax,
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DISCUSSION It is important to note
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LITERATURE CITED Billings, W. D. 19
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Richard T. Wick Burlington Northern
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themselves, the traditional industr
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highways. Of course, all roads are
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Darrel L. Kenops District Ranger US
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In the future we will see our const
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Lyon, L. Jack, Project Leader, Ecol
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The Intermountain Station, headquar
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