TITLE

The effect of temperature on growth and competition between Sphagnum species

AUTHOR(S)
Breeuwer, Angela; Heijmans, Monique M. P. D.; Robroek, Bjorn J. M.; Berendse, Frank; Green, Allan
PUB. DATE
April 2008
SOURCE
Oecologia;Apr2008, Vol. 156 Issue 1, p155
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Peat bogs play a large role in the global sequestration of C, and are often dominated by different Sphagnum species. Therefore, it is crucial to understand how Sphagnum vegetation in peat bogs will respond to global warming. We performed a greenhouse experiment to study the effect of four temperature treatments (11.2, 14.7, 18.0 and 21.4°C) on the growth of four Sphagnum species: S. fuscum and S. balticum from a site in northern Sweden and S. magellanicum and S. cuspidatum from a site in southern Sweden. In addition, three combinations of these species were made to study the effect of temperature on competition. We found that all species increased their height increment and biomass production with an increase in temperature, while bulk densities were lower at higher temperatures. The hollow species S. cuspidatum was the least responsive species, whereas the hummock species S. fuscum increased biomass production 13-fold from the lowest to the highest temperature treatment in monocultures. Nutrient concentrations were higher at higher temperatures, especially N concentrations of S. fuscum and S. balticum increased compared to field values. Competition between S. cuspidatum and S. magellanicum was not influenced by temperature. The mixtures of S. balticum with S. fuscum and S. balticum with S. magellanicum showed that S. balticum was the stronger competitor, but it lost competitive advantage in the highest temperature treatment. These findings suggest that species abundances will shift in response to global warming, particularly at northern sites where hollow species will lose competitive strength relative to hummock species and southern species.
ACCESSION #
31648357

 

Related Articles

  • Response of the overturning circulation to high-latitude fresh-water perturbations in the North Atlantic. Cheng, W.; Rhines, P. B. // Climate Dynamics;Apr2004, Vol. 22 Issue 4, p359 

    Studies have suggested that sea-ice cover east and west of Greenland fluctuates out-of phase as a part of the Atlantic decadal climate variability, and greater changes are possible under global warming conditions. In this study, the response of the Atlantic meridional overturning circulation...

  • Words of warming. Middleton, Nick // Geographical (Campion Interactive Publishing);Oct99, Vol. 71 Issue 10, p60 

    Explains why the world is hotting up. Process of greenhouse effect; Importance of the greenhouse gases; Human intervention on the concentration of greenhouse gases.

  • Global Warming and the Greenhouse Effect.  // World Almanac for Kids;1997, p93 

    This article explains the greenhouse effect and global warming. Many scientists believe that gases in the air are causing Earth's climate to become warmer. This is called global warming. In Earth's atmosphere there are tiny amounts of gases called greenhouse gases. These gases let the rays of...

  • Letting the Facts Speak For Themselves. Wexler, Mark // National Wildlife (World Edition);Apr/May2005, Vol. 43 Issue 3, p6 

    Introduces a series of articles that gather evidence supporting the reality of global warming and its negative impact on wildlife and the environment.

  • Global warming impact on the dominant precipitation processes in the Middle East. Evans, Jason P. // Theoretical & Applied Climatology;2010, Vol. 99 Issue 3/4, p389 

    In this study, the ability of a regional climate model, based on MM5, to simulate the climate of the Middle East at the beginning of the twenty-first century is assessed. The model is then used to simulate the changes due to global warming over the twenty-first century. The regional climate...

  • MIRRORS AND SMOKE. Roy, Kenneth I.; Kennedy, Robert // Whole Earth;Summer2001, Issue 105, p70 

    Deals with the idea of placing mirrors in space to solve problem with Greenhouse effects and global warming. Greenhouse temperature change estimated by the Intergovernmental Panel on Climate Change; Advantages of space mirrors; Cost of replacing generating plants by 2050.

  • No solar hiding place for greenhouse sceptics. Schiermeier, Quirin // Nature;7/5/2007, Vol. 448 Issue 7149, p8 

    The article presents a study which confirmed that there are no grounds to blame the Sun for recent global warming. The analysis shows that global warming since 1985 has been caused neither by an increase in solar radiation nor by a decrease in the flux of galactic cosmic rays. According to...

  • Temperature scaling pattern dependence on representative concentration pathway emission scenarios. Ishizaki, Yasuhiro; Shiogama, Hideo; Emori, Seita; Yokohata, Tokuta; Nozawa, Toru; Ogura, Tomoo; Abe, Manabu; Yoshimori, Masakazu; Takahashi, Kiyoshi // Climatic Change;May2012, Vol. 112 Issue 2, p535 

    To preserve consistency among developed emission scenarios, the scenarios used in climate modeling, and the climate scenarios available for impact research, the pattern scaling technique is useful technique. The basic assumption of pattern scaling is that the spatial response pattern per 1 K...

  • Global Warming Impacts Alaska's Businesses. Williams, Deborah // Alaska Business Monthly;Sep2008, Vol. 24 Issue 9, p32 

    The article discusses the implication of global warming to the business enterprises in Alaska. According to the National Assessment Synthesis Team, the country warmed approximately 4 degrees during the time when the earth has warmed one degree Fahrenheit since 1958. The incident greatly impacted...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics