Thesis work in Ecosystem ecology

1
Thesis work in Ecosystem ecology

• Mycorrhizal and fine root turnover
• The rate that fine roots and rhizomorphs release
  CO2
• to the atmosphere has important implications for
  global C
• balance, but the mechanisms and processes that
  regulate
• C dynamics in these pools are not well
  understood.
• Fine root production has been estimated to
  account for up
• to 33 of global annual net primary production,
  but the
• global contribution of rhizomorphs remains
  unknown.
• Rhizomorphs largely consist of newly fixed C
  directly
• allocated from the leaves and only passing
  through the
• fine roots. Therefore, it is crucial to
  understand the factors
• controlling fine root and rhizomorph production
  at the
• ecosystem scale for better understanding of CO2
  fluxes
• and nutrient cycles at global scales.
• This study will use either in-growth tubes or
  image analysis and minirhizotron technique to
  investigate production and turnover of
  mycorrhizal hyphaes and fine roots in a drained
  peatland.

2008-06-19
2008-07-07
Fine roots
Mycorrhizal hypae / Rhizomorphs
Contact Robert Björk (robert.bjorkatdpes.gu.se)