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Substrate heterogeneity and complexity as determinants of plant nitrogen capture from soil 'hotspots'
Reference
D05140
Principal Investigator / Supervisor
Professor Alastair Fitter
Co-Investigators /
Co-Supervisors
Institution
University of York
Department
Biology
Funding type
Research
Value (£)
239,233
Status
Completed
Type
Research Grant
Start date
01/05/1996
End date
11/06/1999
Duration
38 months
Abstract
We will relate the durability, chemical and physical complexity of heterogeneously distributed organic sources of N, and associated microbial processes to the capture by plants of the N made available. We will introduce 13C and 15N labelled organic 'hotspots' locally into soil supporting established vegetation. The dynamics of hotspot N capture by plants will be measured via their delta-15 Ns, of root demography in the hotspot by non-destructive observations using minirhizotrons, and of hotspot decomposition by the delta-13 C of CO2 respired into the soil, sampling of soil microbes and chemical/isotopic analysis of hotspot residues.
Summary
unavailable
Committee
Closed Committee - Agri-food (AF)
Research Topics
X – not assigned to a current Research Topic
Research Priority
X – Research Priority information not available
Research Initiative
X - not in an Initiative
Funding Scheme
X – not Funded via a specific Funding Scheme
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