Record Display for the EPA National Library Catalog


Main Title Mycorrhizae Alter Quality and Quantity of Carbon Allocated below Ground.
Author Rygiewicz, P. T. ; Andersen, C. P. ;
CORP Author Corvallis Environmental Research Lab., OR.
Publisher c1994
Year Published 1994
Report Number EPA/600/J-94/346;
Stock Number PB94-210499
Additional Subjects Carbon isotopes ; Forests ; Ecosystems ; Carbon dioxide ; Pine trees ; Soils ; Carbon cycle ; Respiration ; Roots ; Plants(Botany) ; Measurement ; Photosynthesis ; Fungus diseases ; Climate ; Atmospheric composition ; US EPA ; Reprints ; Pinus ponderosa ; Carbon 14 ; Pine trees ; Hebelona crustuliniform ; Host ; Mycorrhizae
Library Call Number Additional Info Location Last
NTIS  PB94-210499 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 5p
Plants and soils are a critically important element in the global carbon-energy equation. It is estimated that in forest ecosystems over two-thirds of the carbon is contained in soils and peat deposits. Despite the importance of forest soils in the global carbon cycle, fluxes of carbon associated with fundamental processes and soil functional groups are inadequately quantified, limiting our understanding of carbon movement and sequestration in soils. The authors report the direct measurement of carbon in and through all major pools of a mycorrhizal (fungus-root) coniferous seedling (a complete carbon budget). The mycorrhizal symbiont reduces overall retention of carbon in the plant-fungus symbiosis by increasing carbon in roots and below-ground respiration and reducing its retention and release above ground. Below ground, mycorrhizal plants shifted allocation of carbon to pools that are rapidly turned over, primarily to fine roots and fungal hyphae, the host root and fungal respiration. Mycorrhizae alter the size of below-ground carbon pools, the quality and, therefore, the retention time of carbon below ground.