PEGG: Recent Research

Bacterial Assimilation of Riverine Organic Nitrogen (BARON)
Alan Tappin¹, Mark Fitzsimons¹, Paul Loughnane² and Alan McCarthy²
¹	School of Earth, Ocean & Environmental Sciences, University of Plymouth, Plymouth, Devon PL4 8AA, U.K.
²	School of Biological Sciences, University of Liverpool, Liverpool, U.K.
Presented at: ASLO Aquatic Sciences Meeting, Nice, France, 26-30 January 2009.
Download: Poster as an A4 pdf file.

Brief Summary

Why study dissolved organic nitrogen?

Inputs of reactive N to the environment have doubled over the last 100 years
Global riverine flux of dissolved organic nitrogen (DON) to coastal waters is ca 31-37% of total dissolved N
Europe accounts for ca 8% of annual global DON export from rivers to coastal waters, 40% of which is anthropogenic

Aims of Project

To determine the biodegradation of natural and anthropogenic DON compounds in river water, at environmentally relevant concentrations, using incubations containing riverine bacteria
To determine the degradation patterns of DON compounds using electrospray ionisation-tandem mass spectrometry
To identify the bacteria modifying DON using PCR amplification of DNA with 16S rDNA primers and subsequent analysis

Download the complete poster as an A4 pdf file.

Top of Page	Recent PEGG Posters	PEGG Home Page