Poster (Scientific congresses and symposiums)
Bio-irrigation in simple diagenetic models: A study in the northwestern Adriatic
Capet, Arthur; Soetaert, Karline; De Vittor, Cinzia et al.
2016EGU General Assembly 2016
Editorial reviewed
 

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Keywords :
Benthic-Pelagic coupling; bioirrigation; Omexdia
Abstract :
[en] In the process of setting up a benthic-pelagic coupled model for the northern adriatic Sea, the OMEXDIA model has been used to analyze through model calibration, pore-water profiles and in-situ flux data in that area. Both enhanced biodiffusive and non-local exchange formalisms were tested to represent the impact on bioirrigation on pore water solute profiles and benthic fluxes. Bayesian calibration procedure revealed that only the non-local exchange formalism allows to render simultaneously the pore water solutes profiles and fluxes at the sediment water interface when inorganic carbon, oxygen, nitrate, ammonium and phosphate dy- namics are considered jointly. While the enhanced-biodiffusive formalism is convenient to compare diffusive and total benthic fluxes of a single vari- able (derived from solutes profiles and incubation chambers respectively), it is not suited for multivariate modelling purposes. We evidence that the impact of bioirrigation on benthic-pelagic coupling strongly differ accord- ing the the chosen formalism, in particular in terms of the N:P ratio of remineralised fluxes.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Capet, Arthur  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > MAST (Modeling for Aquatic Systems)
Soetaert, Karline;  NIOZ, Yerseke, The Netherlands
De Vittor, Cinzia;  OGS, Trieste, Italy
Cibic, Tamara;  OGS, Trieste, Italy
Del Negro, Paola;  OGS, Trieste, Italy
Solidoro, Cosimo;  OGS, Trieste, Italy
Language :
English
Title :
Bio-irrigation in simple diagenetic models: A study in the northwestern Adriatic
Publication date :
April 2016
Event name :
EGU General Assembly 2016
Event organizer :
EGU
Event place :
Vienna, Austria
Event date :
April 2016
Audience :
International
Peer reviewed :
Editorial reviewed
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since 18 January 2018

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