Spatial oxygen heterogeneity in a Hediste diversicolor irrigated burrow
نویسندگان
چکیده
منابع مشابه
Characterization of specificity of bacterial community structure within the burrow environment of the marine polychaete Hediste (Nereis) diversicolor.
Bioturbation is known to stimulate microbial communities, especially in macrofaunal burrows where the abundance and activities of bacteria are increased. Until now, these microbial communities have been poorly characterized and an important ecological question remains: do burrow walls harbor similar or specific communities compared with anoxic and surface sediments? The bacterial community stru...
متن کاملToxicity and bioaccumulation of sediment-associated silver nanoparticles in the estuarine polychaete, Nereis (Hediste) diversicolor.
In this study, the toxicities of sediment-associated silver added to sediment as commercially available silver nanoparticles (Ag NPs, 20 and 80 nm) and aqueous Ag (AgNO3) to the estuarine polychaete, Nereis (Hediste) diversicolor, were investigated for both individual and subcellular endpoints after 10 d of exposure. Both Ag NP types were characterized in parallel to the toxicity studies and fo...
متن کاملInfluence of bioturbation by Hediste diversicolor on mercury fluxes from estuarine sediments: a mesocosms laboratory experiment.
Mercury, with its reactive forms being the most deleterious for the trophic chains, has been identified as a major pollutant in a few confined bodies of the coastal zone. Due to feeding, burrowing, and bioirrigation activities, infauna are known to play a crucial role in the biogeochemical processes of contaminants. The main goal of the present study is to evaluate the effects of Hediste divers...
متن کاملParticle reworking and solute transport by the sediment-living polychaetes Marenzelleria neglecta and Hediste diversicolor
To cite this version: Hedman, Jenny Elisabet and Gunnarsson, Jonas S. and Samuelsson, Göran and Gilbert, Franck Particle reworking and solute transport by the sediment-living polychaetes Marenzelleria neglecta and Hediste diversicolor. (2011) Journal of Experimental Marine Biology and Ecology, vol. 407 (n° 2). pp. 294-301. ISSN 0022-0981 Open Archive Toulouse Archive Ouverte (OATAO) OATAO is an...
متن کاملSeasonal trend in burrow depth and tidal variation in feeding activity of Nereis diversicolor
Ragworms Nereis diversicolor live in burrows which, if deeper than 5 to 10 cm, offer a safe refuge from most of their predators. Burrow depth must be ca 15 cm before they live out of reach of all predators. Burrow depth increases with body slze, levelling off at ca 15 cm, when the depth refuge is reached. Worms live at greater depths in sand than In mud, but this effect disappears if worms with...
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ژورنال
عنوان ژورنال: Hydrobiologia
سال: 2011
ISSN: 0018-8158,1573-5117
DOI: 10.1007/s10750-011-0907-x