| Title: |
Moisture controls on carbon dioxide dynamics |
| Authors: |
Published Online In Wiley Interscience; M. Strack; J. S. Price |
| Contributors: |
The Pennsylvania State University CiteSeerX Archives |
| Source: |
http://www.gret-perg.ulaval.ca/uploads/tx_centrerecherche/Strack_Price_Ecohydrol_2009.pdf. |
| Publication Year: |
2008 |
| Collection: |
CiteSeerX |
| Subject Terms: |
Rydin; 1998). In general; Sphagnum productivity follows |
| Description: |
Sphagnum moss is the major peat-forming vegetation component in boreal peatlands. The relationship between Sphagnum productivity and moss moisture content has been documented; however, the link between moss moisture content and conditions in the underlying peat column is less clear. We conducted a pilot study in which we monitored volumetric moisture content with depth and gravimetric water content of Sphagnum capitula and CO2 exchange for two peat monoliths with intact moss layer dominated by Sphagnum fuscum and S. magellanicum. Measurements were made under drying conditions and rewetting from below and following simulated precipitation events. Capitulum moisture content was related to water table position but varied between species. Both capitulum moisture content and water table position could be used to explain net CO2 exchange and respiration during drying and rewetting from below, although hysteresis was apparent where respiration was lower on rewetting than drying for the same water table position. Precipitation complicated these relationships because small events ( |
| Document Type: |
text |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.582.2700 |
| Availability: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.582.2700; http://www.gret-perg.ulaval.ca/uploads/tx_centrerecherche/Strack_Price_Ecohydrol_2009.pdf |
| Rights: |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| Accession Number: |
edsbas.36C5D7E0 |
| Database: |
BASE |