World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Global-scale Pattern of Peatland Sphagnum Growth Driven by Photosynthetically Active Radiation and Growing Season Length : Volume 9, Issue 7 (30/07/2012)

By Loisel, J.

Click here to view

Book Id: WPLBN0003986599
Format Type: PDF Article :
File Size: Pages 10
Reproduction Date: 2015

Title: Global-scale Pattern of Peatland Sphagnum Growth Driven by Photosynthetically Active Radiation and Growing Season Length : Volume 9, Issue 7 (30/07/2012)  
Author: Loisel, J.
Volume: Vol. 9, Issue 7
Language: English
Subject: Science, Biogeosciences
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description
Description: Department of Earth and Environmental Sciences, Lehigh University, 1 West Packer Avenue, Bethlehem, PA 18015–3001, USA. High-latitude peatlands contain about one third of the world's soil organic carbon, most of which is derived from partly decomposed Sphagnum (peat moss) plants. We conducted a meta-analysis based on a global data set of Sphagnum growth measurements collected from published literature to investigate the effects of bioclimatic variables on Sphagnum growth. Analysis of variance and general linear models were used to relate Sphagnum magellanicum and S. fuscum growth rates to photosynthetically active radiation integrated over the growing season (PAR0) and a moisture index. We found that PAR0 was the main predictor of Sphagnum growth for the global data set, and effective moisture was only correlated with moss growth at continental sites. The strong correlation between Sphagnum growth and PAR0 suggests the existence of a global pattern of growth, with slow rates under cool climate and short growing seasons, highlighting the important role of growing season length in explaining peatland biomass production. Large-scale patterns of cloudiness during the growing season might also limit moss growth. Although considerable uncertainty remains over the carbon balance of peatlands under a changing climate, our results suggest that increasing PAR0 as a result of global warming and lengthening growing seasons, without major change in cloudiness, could promote Sphagnum growth. Assuming that production and decomposition have the same sensitivity to temperature, this enhanced growth could lead to greater peat-carbon sequestration, inducing a negative feedback to climate change.

Summary
Global-scale pattern of peatland Sphagnum growth driven by photosynthetically active radiation and growing season length

Excerpt
Aurela, M., Laurila, T., and Tuovinen, J.-P.: The timing of snow melt controls the annual CO2 balance in a subarctic fen, Geophys. Res. Lett., 31, L16119, doi:10.1029/2004GL020315, 2004.; Bauer, I. E., Tirlea, D., Bhatti, J. S., and Errington, R. C.: Environmental and biotic controls on bryophyte productivity along forest to peatland ecotones, Can. J. Botany, 85, 463–475, 2007.; Blodau, C.: Carbon cycling in peatlands – A review of processes and controls, Environ. Rev., 10, 111–134, 2002.; Beilman, D. W., MacDonald, G. M., Smith, L. C., and Reimer, P. J.: Carbon accumulation in peatlands of West Siberia over the last 2000 years, Global Biogeochem. Cy., 23, GB1012, doi:10.1029/2007GB003112, 2009.; Berendse, F., van Breemen, N., Rydin, H., Buttler, A., Heijmans, M., Hoosbeek, M. R., Lee, J. A., Mitchell, E., Saarinen, T., Vasander, H., and Wallén, B.: Raised atmospheric CO2 levels and increased N deposition cause shifts in plant species composition and production in Sphagnum bogs, Glob. Change Biol., 7, 591–598, 2001.; Breeuwer, A., Heijmans, M. P. D., Robroek, B. J. M., and Berendse, F.: The effect of temperature on growth and competition between Sphagnum species, Oecologia, 156, 155–167, 2008.; Bubier, J. L., Moore, T. R., and Bledzki, L. A.: Effects of nutrient addition on vegetation and carbon cycling in an ombrotrophic bog, Glob. Change Biol., 13, 1–19, 2007.; Freeman, C., Ostle, N., and Kang, H.: An enzymic latch on a global carbon store, Nature, 409, 149 pp., 2001.; Campbell, C., Vitt, D. H., Halsey, L. A., Campbell, I. D., Thormann, M. N., and Bayley, S. E.: Net primary production and standing biomass in northern continental wetlands, Natural Resources Canada, Report NOR-X-369, Canadian Forest Service, Edmonton, 2000.; Chapin III, F. S., Matson, P. A., and Mooney, H. A.: Principles of terrestrial ecosystem ecology, Springer, 2002.; Charman, D., Beilman, D., Blaauw, M., Booth, R. K., Brewer, S., Chambers, F., Christen, J. A., Gallego-Sala, A. V., Harrison, S. P., Hughes, P. D. M., Jackson, S., Korhola, A., Mauquoy, D., Mitchell, F., Prentice, I. C., van der Linden, M., De Vleeschouwer, F., Yu, Z., Alm, J., Bauer, I. E., McCorish, Y., Garneau, M., Hohl, V., Huang, Y., Karofeld, E., Le Roux, G., Loisel, J., Moschen, R., Nichols, J. E., Nieminen, T. M., MacDonald, G. M., Phadtare, N. R., Rausch, N., Sillasoo, Ü., Swindles, G. T., Tuittila, E.-S., Ukonmaanaho, L., Väliranta, M., van Bellen, S., van Geel, B., Vitt, D., and Zhao, Y.: Climate-driven changes in peatland carbon accumulation during the last millennium, P. Natl. Acad. Sci. USA, in review, 2012.; Clymo, R. S.: The growth of Sphagnum: methods of measurement, J. Ecol., 58, 13–49, 1970.; Clymo, R. S. and Hayward, P. M.: The ecology of Sphagnum, in: Bryophyte ecology, edited by: Smith, A. J. E., Chapman & Hall, London, 229–289, 1982.; Clymo, R. S., Turunen, J., and Tolonen, K.: Carbon accumulation in peatlands, Oikos, 81, 368–388, 1998.; Daley, T. J., Barber, K. E., Street-Perrott, F. A., Loader, N. J., Marshall, J. D., Crowley, S. F., and Fisher, E. H.: Holocene climate variability revealed by oxygen isotope analysis of Sphagnum cellulose from Walton Moss, northern England, Quaternary Sci. Rev., 29, 1590–1601, 2010.; Dorrepaal, E., Aerts, R., Cornelissen, J. H. C., Callaghan, T. V., and van Logtestijn, R. S. P.: Summer warming and increased winter snow cover affect Sphagnum fuscum growth, structure and production in a sub-arctic bog, Glob. Change Biol., 10, 93–104, 2003.; Field, C. B., Lobell, D. B., Peters, H. A., and Chiariello, N. R.: Feedbacks of terrestrial ecosystems to climate change, Ann. Rev. Env. Resourc., 32, 1–29, 2007.; Dorrepaal, E., Toet, S., van Logtestijn, R. S. P., Swart, E., van

 

Click To View

Additional Books


  • Nitrate Source Identification Using Its ... (by )
  • Halogens in Pore Water of Peat Bogs – th... (by )
  • Bacterial Diversity and Biogeochemistry ... (by )
  • Corrigendum to Mechanisms of Microbial C... (by )
  • Evaluation of Biospheric Components in E... (by )
  • Effect of Co2 on the Properties and Sink... (by )
  • Global Uptake of Carbonyl Sulfide (Cos) ... (by )
  • Eddy Covariance Flux Measurements Confir... (by )
  • A Global Compilation of Over 13 000 Diss... (by )
  • A Dual Isotope Approach to Isolate Soil ... (by )
  • Eastern Mediterranean Biogeochemical Flu... (by )
  • Coupling of the Spatial Dynamic of Picop... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.