FN Archimer Export Format
PT J
TI Sponge contribution to the silicon cycle of a diatom‐rich shallow bay
BT 
AF López‐Acosta, María
   Maldonado, Manuel
   Grall, Jacques
   Ehrhold, Axel
   Sitjà, Cèlia
   Galobart, Cristina
   Pérez, Fiz F.
   Leynaert, Aude
AS 1:1,2;2:3;3:4;4:5;5:3;6:3;7:1;8:2;
FF 1:;2:;3:;4:PDG-REM-GEOOCEAN-ASTRE;5:;6:;7:;8:;
C1 Instituto de Investigaciones Marinas (IIM), CSIC Vigo, Spain
   Laboratoire des Sciences de l'Environnement Marin, UMR 6539, Institut Universitaire Européen de la Mer Plouzané , France
   Centro de Estudios Avanzados de Blanes (CEAB), CSIC Girona , Spain
   Observatoire des Sciences de l'Univers, UMS 3113, Institut Universitaire Européen de la Mer Plouzané , France
   IFREMER, Géosciences Marines, Centre de Brest Plouzané , France
C2 IIM CSIC, SPAIN
   CNRS, FRANCE
   CEAB CSIC, SPAIN
   UBO, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-REM-GEOOCEAN-ASTRE
UM LEMAR
   GEO-OCEAN
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-europe
   copubli-univ-france
IF 4.5
TC 2
UR https://archimer.ifremer.fr/doc/00791/90288/95812.pdf
   https://archimer.ifremer.fr/doc/00791/90288/95813.pdf
LA English
DT Article
AB In coastal systems, planktonic and benthic silicifiers compete for the pool of dissolved silicon, a nutrient required to make their skeletons. The contribution of planktonic diatoms to the silicon cycle in coastal systems is often well characterized, while that of benthic silicifiers such as sponges has rarely been quantified. Herein, silicon fluxes and stocks are quantified for the sponge fauna in the benthic communities of the Bay of Brest (France). A total of 45 siliceous sponge species living in the Bay account for a silicon standing stock of 1215 tons, while that of diatoms is only 27 tons. The silicon reservoir accumulated as sponge skeletons in the surface sediments of the Bay rises to 1775 tons, while that of diatom skeletons is only 248 tons. These comparatively large stocks of sponge silicon were estimated to cycle two orders of magnitude slower than the diatom stocks. Sponge silicon stocks need years to decades to be renewed, while diatom turnover lasts only days. Although the sponge monitoring over the last 6 yr indicates no major changes of the sponge stocks, our results do not allow us to conclude if the silicon sponge budget of the Bay is at steady state, and potential scenarios are discussed. The findings buttress the idea that sponges and diatoms play contrasting roles in the marine silicon cycle. The budgets of these two major silicon users need to be integrated and their connections revealed, if we aim to improve our understanding of the silicon cycling in coastal ecosystems. 
PY 2022
PD NOV
SO Limnology And Oceanography
SN 0024-3590
PU Wiley
VL 67
IS 11
UT 000849502200001
BP 2431
EP 2447
DI 10.1002/lno.12211
ID 90288
ER

EF