PROGRIS

Productivity and carbon transformations on the Greenland Ice Sheet

 Coordinatore UNIVERSITY OF BRISTOL 

 Organization address address: TYNDALL AVENUE SENATE HOUSE
city: BRISTOL
postcode: BS8 1TH

contact info
Titolo: Mr.
Nome: Mike
Cognome: Hobbs
Email: send email
Telefono: -9288390
Fax: -9250973

 Nazionalità Coordinatore United Kingdom [UK]
 Totale costo 30˙000 €
 EC contributo 30˙000 €
 Programma FP7-PEOPLE
Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call FP7-PEOPLE-2009-RG
 Funding Scheme MC-ERG
 Anno di inizio 2009
 Periodo (anno-mese-giorno) 2009-10-01   -   2011-09-30

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    UNIVERSITY OF BRISTOL

 Organization address address: TYNDALL AVENUE SENATE HOUSE
city: BRISTOL
postcode: BS8 1TH

contact info
Titolo: Mr.
Nome: Mike
Cognome: Hobbs
Email: send email
Telefono: -9288390
Fax: -9250973

UK (BRISTOL) coordinator 30˙000.00

Mappa


 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

nutrients    surface    quantity    rock    debris    transformation    abundance    primary    microbes    gradient    rates    supraglacial    along    community    relationship    carbon    respiration    source    secondary    hypothesis    microbial    glacier    budget    quality    margin    ecosystem   

 Obiettivo del progetto (Objective)

'Glaciers cover 10% of the Earth’s land surface and represent an important, yet very little studied, ecosystem. The biogeochemical cycling of carbon in the glacial ecosystem is largely influenced by microbial communities on glacier surfaces that mainly consist of heterotrophic and photoautotrophic bacteria. They have the potential to play a significant role in regional carbon budgets by means of primary and secondary production and respiration, and it is very important to evaluate their contribution on a large scale. However, to provide a credible supraglacial carbon budget, a study is needed in which C concentration and transformation rates in the supraglacial environment are related to the limiting factors, including the source of microbes and nutrients. Quantification of such a relationship will provide a powerful tool for global carbon budget models. The underlying hypothesis of the proposed research is that the productivity of the supraglacial ecosystem is constrained primarily by the source of microbial cells, and secondarily by rock-derived nutrients. The principal source of microbes and rock-derived nutrients is wind-borne debris originating in deglaciated areas close to the glacier margin. Thus, the main hypothesis to be tested in this study is that there is a relationship between the distance of a site on the glacier surface from the glacier margin and the abundance and activity of the local microbial community. The objectives of this study are to quantify the spatial distribution of surface debris on the Greenland Ice Sheet along a gradient from the glacier edge to the equilibrium line, to determine the quantity and quality of C and the abundance of microbes on the surface, to measure primary and secondary production and respiration of the supraglacial microbial community and to derive a relationship between the position along the gradient and the quantity and quality of C and its transformation rates.'

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