Springer Old Growth Forests - Chapter 4 ppt

... decrease in net primary productivity in old- growth forests if it occurs is related more to decreasing photosynthesis in old and tall trees (as well as in old- growth forest canopies) than to increasing respiratory ... Springer, Berlin, pp 17 47 Bond BJ, Czarnomski NM, Cooper C, Day ME, Greenwood MS (2007) Developmental decline in height growth in Douglas fir. Tree Physiol 27 :4...

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... 20 1- to 40 0-year -old stands (early old- growth) are either carbon-neutral or still accumulating carbon. Few successions exhibited a pronounced late-successional decline. These results are consis- tent ... old- growth stage (201 40 0 years) Label a Name Type Duration (years) Pioneer b Late b,d C b,100 C b,200 C b ,40 0* DC b -P DC b -T DC b -EOG 1 Fraser Exp. Forest c i c i 245...

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... Comparisons with second -growth forests are also often made to highlight the uniqueness of old- growth forests. 6.2 Structural and Compositional Features of Old- Growth Old- growth forests possess distinct ... 3.9 b and 4. 0 c Montgomery 20 04 Cocha Cashu, Peru 4. 4 b and 4. 9 c Montgomery 20 04 Kilometer 41 , Brazil 4. 0 b and 4. 2 c Montgomery 20 04 Nouragues, Frenc...

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... large. Further- more, old- growth forests may continue to accumulate carbon and hence act as carbon sinks. Currently, old- growth forests do not have to be reported in national carbon-budgets under ... et al. 20 04) , a 25 0- yearold ponderosa pine site in Oregon (Law et al. 2001), a 300-year old Nothofagus site in New Zealand (Hollinger et al. 19 94) , and 20 0- to 250-year...

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... Rica 200 2,200 À1 .44 À1.33 À0 .42 Central America 9,100 13,000 À0 .42 À0.39 À2.50 Mexico 32,900 30,300 À0 .48 À0.66 À0.29 Bolivia 29 ,40 0 29 ,40 0 À0.23 À0.22 À0.70 Brazil humid 300,600 40 ,800 À0.32 À0.31 ... 2000 b Humid tropics (10 6 ha) Dry tropics (10 6 ha) Flooded forests (10 6 ha) CS RSS Closed forests (10 6 ha) Open forests (10 6 ha) Forests (10 6 ha) South America 630 147...

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... 677 ,46 4 6.0 0.1 11.8 0.0 78.9 3.3 Oceania 206,2 54 11.0 0.2 14. 4 n.s. 63.5 10.8 South America 831, 540 11.6 11.3 14. 4 13.7 34. 6 14. 5 World 3,952,025 34. 1 9.3 11.2 3.7 33.8 7.8 20 Old Growth Forests ... forest use. 20.3 Consideration of Old- Growth Forests in UN Processes 20.3.1 Old- Growth Forests and the UN Framework Convention on Climate Change Old- growth forest...

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... interaction for the functioning and main- tenance of old- growth forests. Second, they take a closer look at the peculiarities of nitrogen 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 globa...

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... Boreal old- growth forests were somewhat younger (median age 2 24 years, inter-quartile range 150 300 years), whereas tropical old- growth forests tended be older (median age 40 0 years, inter-quartile ... old- growth species in the north-western United States. Old- growth forest ages ranged from 50 to 1,150 years (Fig. 2.6). The youngest old- growth stand was a mangrove st...

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... old trees does not automatically indicate old- growth conditions (see Chap. 2 by Wirth et al., this volume), it is fair to say that many old- growth forests contain a high number of trees close ... are generally shorter-lived than trees (Schweingruber 1995) and dwarf-shrubs (see below). The oldest known shrub s grow in Siberia. Hantemirov et al. (2003) found an 840 -year -old Juniper...

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... reduction in NPP or an increase in decom- position rate-constants as forests age could lead to mid-successional forests having more woody detritus than old- growth forests. Repeated disturbance was ... amounts of woody detritus in old- growth forests and then C. Wirth et al. (eds.), Old Growth Forests, Ecological Studies 207, 159 DOI: 10.1007/978‐3‐ 540 ‐92706‐8 8, # Springe...

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