Black Sea; Oxygen; Models; benthic-Pelagic coupling; Continental shelf
Abstract :
[en] Abstract
The dynamics of seasonal hypoxia, which affects the Black Sea north-western shelf since the mid 1970's until present days, is
investigated by means of a 3D biogeochemical model. Comparison of the model results with in -situ data reveals that the
phenomenon may have been underestimated after the mid 1990's due to the distribution of observations. We investigate the
mechanism of hypoxia at seasonal scale, and identify the main drivers of its interannual variability. While high nutrients discharge
caused severe hypoxia in the 1980's, it was sustained in the 1990's by the pool of organic matter accumulated during the previous
years in the sediments layer. With an increasing intensity, climatic stressors intensifies the response of hypoxia to nutrient
discharge, and affect the seasonal dynamics of hypoxia by extending its temporal scale.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Capet, Arthur ; Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Beckers, Jean-Marie ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Grégoire, Marilaure ; Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Language :
English
Title :
Hypoxia in the Black Sea northwestern shelf: From eutrophication to climatic stressors.
Publication date :
October 2013
Event name :
40th CIESM congress
Event date :
from 28 oct 2013 to 1 nov 2013
Audience :
International
Main work title :
40th CIESM congress proceedings
Peer reviewed :
Peer reviewed
European Projects :
FP7 - 287600 - PERSEUS - Policy-oriented marine Environmental Research in the Southern EUropean Seas
