Springer Old Growth Forests - Chapter 3 pdf
Springer Old Growth Forests - Chapter 3 pdf
... Wirth Chapter 3 Old Trees and the Meaning of Old Fritz Hans Schweingruber and Christian Wir th 3. 1 IntroductionWhile the mere presence of old trees does not automatically indicate old- growth ... dendrochronologicaltechnique of cross-dating. As shown in Fig. 3. 1, this simple method allows theC. Wirth et al. (eds.), Old Growth Forests, Ecological Studies 207, 35 DOI: 10.1007/978 3 540‐ 92706‐8 3, # Springer Verlag ... are generally shorter-lived than trees (Schweingruber 1995) and dwarf-shrubs(see below). The oldest known shrub s grow in Siberia. Hantemirov et al. (20 03) found an 840-year -old Juniperus sibirica....
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Springer Old Growth Forests - Chapter 14 pdf
... FIASNAPSHOT data (USDA 2006).14 .3. 1.6 Old- Growth Literature DataWe searched the published literature for AGB estimates for old- growth forests inthe coterminous US. Because old- growth is rare in the eastern ... Areas and protecting old growth forests on federal lands inWestern Oregon and Washington. Nat Areas J 8:25 30 14 Biomass Chronosequences of United States Forests 33 714 .3. 2 .3 Successional Changes ... In: Davis MB (ed) Eastern old growth forests. Island, Washington, DC, pp 32 1 34 3Strang RM (19 73) Succession in unburned subarctic woodlands. Can J For Res 3: 140 1 43 Taylor SL, MacLean DA (2005)...
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Springer Old Growth Forests - Chapter 1 pot
... 13) , is devoted to the old- growth forests of the Canadian boreal forest. Old- growth boreal forest is considered rare since disturbances occur too frequently toallow forest stands to reach old ... interaction for the functioning and main-tenance of old- growth forests. Second, they take a closer look at the peculiarities ofnitrogen dynamics in old- growth forests under the low levels of nitrogen ... protection of old- growth forests, and present an encouraging example. Finally, Grace and Meir(Chap. 17) close this part with a chapter on old- growth dynamics in global tropical forests. They...
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Springer Old Growth Forests - Chapter 2 pot
... Boreal old- growth forests were somewhat younger (median age 224 years, inter-quartile range150 30 0 years), whereas tropical old- growth forests tended be older (median age400 years, inter-quartile ... young old- growth forests are 6 0- to 120-year -old oak stands (Laiolo et al. 20 03) , a 100-year -old borealNorway spruce stand (Dahlberg et al. 1997), and a 110-year -old Balsam fir stand(Sturtevant ... terminate the old- growth stage or developmenttowards it. Obviously, the potential of a forest region to host old- growth forests depends on two rates: (1) the time it takes for old- growth to develop,...
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Springer Old Growth Forests - Chapter 4 ppt
... <0.001 97.7 25.7 3. 8 <0.001P 55 .39 25.92 2.14 0. 034 8 93. 0 25.7 3. 5 <0.001T 198.80 23. 87 8 .33 <0.001Age 43. 68 16.00 2. 73 0.0075df 109 75Residual 1 63. 4 222.4AdjustedR20. 738 5 0.2874 ... 0. 131 T 137 .4 16.5 8 .33 <0.001Age 35 .5 12.0 2.96 0.0 035 df 168 76Residual 154.6 188.2AdjustedR20.510 0.216NPP Coniferous forests Deciduous forests Intercept 510.94 15 .30 33 .38 <0.001 ... Coniferous forests Deciduous forests Intercept 32 4.8 11.7 27. 63 <0.001 506.8 21.2 23. 9 <0.001LAI 99.7 13. 8 7.25 <0.001 93. 1 21.6 4 .3 <0.001P 81.9 17.1 4.79 <0.001 32 .9 21.6 1.5 0. 131 T...
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Springer Old Growth Forests - Chapter 5 ppt
... 20 1- to 400-year -old stands (early old- growth) are either carbon-neutral or still accumulating carbon. Few successionsexhibited a pronounced late-successional decline. These results are consis-tent ... 7.4 8 64 10 13 2 Zotino Pine 270 Pinsyl Pinsyl 5 9 12.5 50 40 50 3 Metolia 31 6 Pinpon Pinpon 10 13 14 .3 100 30 114 Yakutia 38 0 Largme Largme 4 4.5 4.5 40 5 05 Zotino lichen Pine 38 3 Pinsyl Pinsyl ... progressing from early- to late-successional conifers, and fromearly-successional hardwoods to late-successional conifers, tended to accumu-late carbon during the early old- growth phase (201 400...
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Springer Old Growth Forests - Chapter 6 ppt
... Comparisons with second -growth forests arealso often made to highlight the uniqueness of old- growth forests. 6.2 Structural and Compositional Features of Old- Growth Old- growth forests possess distinct ... environment in old- growth forests, (2) the particular understorey light condi-tions found under such forests, and (3) the unique understorey vegetation assem-blage that can develop in old- growth forests. ... adaptations.6 Functional Relationships Between Old Growth Forest Canopies 133 12 3 4 5 612 3 4 5 612 3 4 5 612 3 4 5 612 3 4 5 612 3 4 5 612 3 4 5 612 3 4 5 6DAll latitudesClear skyconditionsClear...
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Springer Old Growth Forests - Chapter 7 ppt
... of old- growth forests are expected to influ-ence biosphere atmosphere exchange of such forests. In this chapter we will focuson structural features of old- growth, i.e. the fact that old- growth ... multi-y ear calibrationperiods.In this chapter, we summarise results from studies in old- growth forests acrossthe globe in order to (1) describe structura l characteristics of old- growth forests relevant ... old- growth forests are characterised by tall, often multi-layered, canopiesone might think that the pho tosynthesis-enhancing effect of diffuse light would bemore pronounced in old- growth forests...
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Springer Old Growth Forests - Chapter 8 doc
... decomposition rate-constants (Olson 19 63) . In general, as theNPP of old- growth forests increases, the live biomass, and the input of mortalityincreases. Thus, more productive old- growth forests can ... amounts of woody detritus in old- growth forests and thenC. Wirth et al. (eds.), Old Growth Forests, Ecological Studies 207, 159DOI: 10.1007/978 3 540‐92706‐8 8,# Springer Verlag Berlin Heidelberg ... reduction in NPP or an increase in decom-position rate-constants as forests age could lead to mid-successional forests havingmore woody detritus than old- growth forests. Repeated disturbance was...
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Springer Old Growth Forests - Chapter 9 potx
... ( 233 ) c 2180 (38 5) b 32 50 ( 439 ) aNumber of fire scars caused in past 250 years 0.667 (0.256) a 0.208 (0.085) b 0.1 43 (0.016) bAboveground propertiesTree biomass (kg m–2) 7 .39 (0. 83) a 5 .38 ... (2.5) b 27 .3 (2.5) aHumus C to N ratio 40.4 (1.18) a 36 .0 (1.17) ab 32 .9 (0.79) bHumus C to P ratio 6 23 (20) b 687 (36 ) ab 759 (30 ) aHumus N to P ratio 15.4 (0.5) c 19.1 (0.9) b 23. 3 (1.1) a196 ... propertiesTree biomass (kg m–2) 7 .39 (0. 83) a 5 .38 (0.47) a 3. 98 (0.62) bTree litterfall (g C m–2year–1) 37 .3 (5.2) a 43. 7 (4.0) a 32 .3 (4.5) bTree productivity (g C m–2year–1) 148.1 (15.5)...
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