In National Geographic Adventure, there is a synpopsis of the article too.
On Sep 20, 2:17 pm, jon parker <[email protected]> wrote: > Thanks for the explanation Kouta! > > 2009/9/20 Kouta Räsänen <[email protected]>: > > > > > > > Jon, > > > The figures I mentioned are for the old-growth portion. From the > > description of the study area in the reference # 1 (see above): "An > > old stand of very large trees on alluvial flats within this > > biogeographic section was selected for study." That study finds the > > volume of coarse woody debris (inlcuding standing and fallen dead > > logs) to be 797 m3/ha and biomass 262 t/ha. Thus, dead aboveground > > material increases total volume and biomass values only 5.6-6.8%. > > > Regarding the sign (if it really was 7 times higher), my guess is that > > they consider all the western coniferous forests belong to the same > > biome, and they simply have not had figures for big forests outside > > North America. > > > - Kouta > > >> I may have paraphrased the sign incorrectly, but it may have also been > >> referring to all of the dead trees on the ground as well. Also I > >> believe it specifically meant the contiguous old-growth portion of > >> Rockefeller Forest, if that matters. Nevertheless, agreed that even > >> 2-3.7 is amazing. > >> Cheers, > >> Jon > > >> 2009/9/19 Kouta Räsänen <[email protected]>: > > >> > Jon, > > >> > I agree, Rockefeller Forest is a truly amazing place. However, the > >> > sign you saw: > > >> >> I read a sign in the park that said Rockefeller Forest(the contiguous > >> >> old-growth portion of the park) contains seven times the biomass per > >> >> acre, > >> >> living and dead, of any other biome on earth. > > >> > seems to be overstated. Some figures: > > >> > - a plot in Rockefeller Forest: total tree biomass 3857-4642 metric > >> > tons per hectare, Sequoia stem biomass 3442-4143 t/ha (1) > >> > - a plot in Goat Marsh RNA, Washington (mostly Noble Fir): stem > >> > biomass 1687 t/ha (2) > > >> > In terms of wood volume: > > >> > - Rockefeller Forest: Sequoia stem volume 9059 - 10903 cubic meters > >> > per hectare (1) or 8071 m3/ha (3) > >> > - a plot in Giant Forest (mostly Giant Sequoia): stem volume 3331 m3/ > >> > ha (3) > >> > - the plot in Goat Marsh RNA: stem volume 3120 m3/ha (3) > >> > - Wallaby Creek stand in Kinglake National Park, Victoria, Australia > >> > (mostly Eucalyptus regnans): total volume 3270 m3/ha, main trunk > >> > volume 2973 m3/ha (4) > > >> > The Wallaby Creek stand is mentioned to have highest measured total > >> > wood volume outside western North America (4). Unfortunately it burned > >> > earlier this year (5). > > >> > Thus, biomass per acre in Rockefeller forest seems to be 2-3 times > >> > (not 7 times) higher than any other biome. Or if they consider all the > >> > western coniferous forests belong to the same biome, then 2.7-3.7 > >> > times higher than any other biome. Of course, 2-3.7 time higher is > >> > incredible too. > > >> > Hopefully BVP is reading this thread and provide corrections and > >> > updates. > > >> > Sources: > >> > (1)http://www.springerlink.com/content/r4718838620l2713/fulltext.pdf > >> > (2)http://www.fs.fed.us/pnw/publications/pnw_1972_franklin001/Supplement... > >> > (3)http://article.pubs.nrc-cnrc.gc.ca/RPAS/rpv?hm=HInit&afpf=x00-050.pdf... > >> > (4) Van Pelt, Sillett & Nadkarni (2004): Quantifying and Visualizing > >> > Canopy Structure in Tall Forests: Methods and a Case Study. In Lowman > >> > & Rinker (eds.): Forest Canopies, second edition. Elsevier. > >> > (5)http://www.parkweb.vic.gov.au/1park_display.cfm?park=121 > > >> > - Kouta- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected] -~----------~----~----~----~------~----~------~--~---
