%0 Journal Article
%T Sediment reworking by marine benthic species from the Gullmar Fjord (Western Sweden): Importance of faunal biovolume
%+ Laboratoire de MicrobiologiE de Géochimie et d'Ecologie Marines (LMGEM)
%+ Department of Chemistry
%+ PaleoEnvironnements et PaleobioSphere (PEPS)
%+ Institut des Sciences de la MER de Rimouski (ISMER)
%+ Department of marine Ecology
%+ Laboratoire Ecologie Fonctionnelle et Environnement (LEFE)
%+ Ecosystèmes lagunaires : organisation biologique et fonctionnement (ECOLAG)
%A Gilbert, Franck
%A Hulth, Stefan
%A Grossi, Vincent
%A Poggiale, Jean-Christophe
%A Desrosiers, Gaston
%A Rosenberg, Rutger
%A Gérino, Magali
%A François Carcaillet, Frédérique
%A Michaud, Emma
%A Stora, Georges
%< avec comité de lecture
%@ 0022-0981
%J Journal of Experimental Marine Biology and Ecology
%I Elsevier
%V 348
%N 1-2
%P 133-144
%8 2007-09-07
%D 2007
%R 10.1016/j.jembe.2007.04.015
%K Biomass
%K Bioturbation
%K Biovolume
%K Functional groups
%K Macrofauna
%K Sediment reworking
%K Biomass
%K Functional Groups
%Z Sciences of the Universe [physics]/Earth Sciences/Hydrology
%Z Environmental Sciences/Biodiversity and EcologyJournal articles
%X In order to compare and quantify sediment reworking activities by different species/functional groups of macrofauna, a laboratory experiment was carried out with species from the Gullmarsfjord (Western Sweden). Monospecific communities of Amphiura filiformis, Echinocardium cordatum, Scalibregma inflatum and Abra nitida were introduced in experimental mesocosms, with identical densities (795 ind. m−2), for 10 days. Sediment reworking was studied by quantifying downward and upward movements of fluorescent inert tracers (luminophores). Luminophores with different colour were initially deposited both at the sediment surface and within the sediments. Population biomass and biovolume were also determined. Surface tracers reworking coefficients ranged from 0.6 to 2.2 cm2 y−1 and 0.9 to 4.1 y−1, respectively for the biodiffusive-like and non-local transports. Calculated biodiffusive-like coefficient was between 1.0 and 2.3 cm2 y−1 for the deep tracers. For both tracers, the E. cordatum population presented the highest reworking coefficients. Among the morphological and/or ethological parameters that could determine overall patterns of reworking and differences between species, results have shown a direct relationship between the apparent biodiffusive mixing and the biovolume of the individuals (Db=0.35 ⁎ Biovolume). This suggests that the biovolume of macrofauna may allow a rough estimate of the biodiffusive-like reworking intensity of particles deposited on the sediment surface.
%G English
%2 https://hal.science/hal-00164281/document
%2 https://hal.science/hal-00164281/file/gilbert_6087.pdf
%L hal-00164281
%U https://hal.science/hal-00164281
%~ IRD
%~ SDE
%~ INSU
%~ METEO
%~ UNIV-TLSE3
%~ CNRS
%~ UNIV-AMU
%~ UNIV-LYON1
%~ UNIV-MONTP2
%~ CNES
%~ IFREMER
%~ OMP
%~ OMP-ECOLAB
%~ ECOLAG
%~ GIP-BE
%~ LMGEM
%~ AGROPOLIS
%~ UNIV-MONTPELLIER
%~ UDL
%~ UNIV-LYON
%~ TOULOUSE-INP
%~ UNIV-UT3
%~ UT3-INP
%~ UT3-TOULOUSEINP
%~ UM1-UM2