FN Archimer Export Format
PT J
TI Foraminiferal species responses to in situ, experimentally induced anoxia in the Adriatic Sea
BT 
AF LANGLET, Dewi
   BAAL, C.
   GESLIN, E.
   METZGER, E.
   ZUSCHIN, M.
   RIEDEL, B.
   RISGAARD-PETERSEN, N.
   STACHOWITSCH, M.
   JORISSEN, F. J.
AS 1:1;2:2;3:1;4:1;5:2;6:3;7:4;8:3;9:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 Université d’Angers, UMR6112 CNRS LPG-BIAF – Bio-Indicateurs Actuels et Fossiles, 2 Boulevard Lavoisier, 49045 Angers Cedex, France
   University of Vienna, Department of Palaeontology, Althanstrasse 14, 1090 Vienna, Austria.
   University of Vienna, Department of Limnology and Oceanography, Althanstrasse 14, 1090 Vienna, Austria
   Aarhus University, Center for Geomicrobiology, Department of Bioscience, 8000 Aarhus C, Denmark
C2 UNIV ANGERS, FRANCE
   UNIV VIENNA, AUSTRIA
   UNIV VIENNA, AUSTRIA
   UNIV AARHUS, DENMARK
IN DOAJ
IF 3.978
TC 54
UR https://archimer.ifremer.fr/doc/00865/97679/106601.pdf
   https://archimer.ifremer.fr/doc/00865/97679/106602.zip
   https://archimer.ifremer.fr/doc/00865/97679/106603.pdf
   https://archimer.ifremer.fr/doc/00865/97679/106604.zip
LA English
DT Article
AB Anoxia was successfully induced in four benthic chambers installed at 24m depth in the northern Adriatic Sea for periods varying from 9 days to 10 months. During the 10-month period, species richness significantly decreased. Although no significant change in Shannon diversity and evenness was observed, the composition of the foraminiferal assemblages changed with time. This change is due to interspecific differences in tolerance to anoxia. Reophax nanus, Textularia agglutinans and Quinqueloculina stelligera all showed a significant decrease with time, strongly suggesting they are sensitive to anoxia. Conversely, Eggerella scabra, Bulimina marginata, Lagenammina atlantica, Hopkinsina pacifica and Bolivina pseudoplicata appeared to be resistant to the experimental conditions. Quinqueloculina seminula was apparently sensitive to anoxia but showed a clear standing stock increase during the first month of the experiment, which we interpret as an opportunistic response to increasing organic matter availability due to the degradation of the dead macrofaunal organisms. None of the anoxia-sensitive species is able to accumulate intracellular nitrates. Nitrate accumulation could be shown for some tested specimens of the dominant anoxia-tolerant species E. scabra and B. marginata. However, tests on the denitrification capacity of these taxa yielded negative results, suggesting that their resistance to long-term anoxia is not due to their ability to denitrify. 
PY 2014
SO Biogeosciences
SN 1726-4170
PU Copernicus Gesellschaft Mbh
VL 11
IS 7
UT 000334609000008
BP 1775
EP 1797
DI 10.5194/bg-11-1775-2014
ID 97679
ER

EF