Results 51 to 60 of about 32,393 (253)

Lake sedimentological and ecological response to hyperthermals : Boltysh impact crater, Ukraine [PDF]

, 2017
Acknowledgements Initial drilling of the Boltysh meteorite crater was funded by Natural Environment Research Council (NERC) grant NE/D005043/1. The authors are extremely grateful to the valuable scientific contributions of S. Kelley and I. Gilmour.
Andrews, Steven D., Ebinghaus, Alena, Jolley, David W., Kemp, David B.   +3 more
core   +1 more source

Characterization of specificity of bacterial community structure within the burrow environment of the marine polychaete Hediste (Nereis) diversicolor [PDF]

, 2011
Bioturbation is known to stimulate microbial communities, especially in macrofaunal burrows where the abundance and activities of bacteria are increased.
Cuny, Philippe, Gilbert, Franck, Militon, Cécile, Pischedda, Laura   +3 more
core   +4 more sources

Reshaping perspectives of deep-sea benthic function

Frontiers in Marine Science
Bioturbation is a key ecosystem function with a fundamental role in mediating major biogeochemical cycles. The intensity and depth of bioturbation is influenced by the taxa present, which is often a function of food supply.
S. Kersey Sturdivant, S. Kersey Sturdivant, Marisa L. Guarinello, Joseph D. Germano, Drew A. Carey   +4 more
doaj   +1 more source

Influence of bioturbation by the polychaete Nereis diversicolor on the structure of bacterial communities in oil contaminated coastal sediments [PDF]

, 2007
Patterns of change in the structure of bacterial communities monitored by ribosomal intergenic spacer analysis (RISA) in oil contaminated sediments inhabited or not by the marine polychaete Nereis diversicolor were studied during 45 days under laboratory
Acquaviva, Monique, Cornet-Barthaux, Véronique, Cuny, Philippe, Gilbert, Franck, Grossi, Vincent, Miralles, Gilles, Stora, Georges   +6 more
core   +5 more sources

Simultaneous determination of in situ vertical transitions of color, pore-water metals, and visualization of infaunal activity in marine sediments [PDF]

, 2009
The vertical color transition from brown to gray-green in marine sediments is linked to the Fe redox boundary and is commonly used as a proxy for biogeochemical state. We combine time-lapse sediment profile imaging with diffusive gradient thin (DGT) gels
Fones, Gary, Parker, Ruth, Solan, Martin, Teal, Lorna R.   +3 more
core   +1 more source

A twofold development and demise of pine stands in the Netherlands during the Allerød interstadial: two hypotheses to explain a link to climate change recorded in Greenland ice

Journal of Quaternary Science, EarlyView.
ABSTRACT The second half of the Allerød interstadial in the Netherlands is characterised by pine forest. Excavated trunks of 165 pine trees at Leusden‐Den Treek in the central Netherlands (LETR16) were dated by dendrochronology and radiocarbon. Two chronologically separated pine forest phases occurred during relatively warm periods as recorded in ...
Wim Z. Hoek, Jos Bazelmans, Otto Brinkkemper, Petra Doeve, Bas van Geel   +4 more
wiley   +1 more source

Early Palaeozoic ocean anoxia and global warming driven by the evolution of shallow burrowing

Nature Communications, 2018
The extent to which the onset of bioturbation affected global biogeochemistry during the Palaeozoic remains unclear. Here, the authors integrate bioturbation into the COPSE model, compare output with geochemical proxies, and suggest shallow burrowing ...
Sebastiaan van de Velde, Benjamin J. W. Mills, Filip J. R. Meysman, Timothy M. Lenton, Simon W. Poulton   +4 more
doaj   +1 more source

Benthic Invertebrate Bioturbation Activity Determines Species Specific Sensitivity to Sediment Contamination

Frontiers in Environmental Science, 2017
Bioturbation activity of sediment-dwelling organisms promotes the release of contaminants across the benthic-pelagic ecosystem boundary, thereby affecting the exposure to and uptake of sediment associated contaminants at the sediment-water interface by ...
Tom V. van der Meer, Milo L. de Baat, Piet F. M. Verdonschot, Piet F. M. Verdonschot, Michiel H. S. Kraak   +4 more
doaj   +1 more source

Early deglaciation history of the southeastern Baffin Island shelf (Eastern Canadian Arctic Archipelago)

Journal of Quaternary Science, EarlyView.
ABSTRACT During the last glacial period, the Laurentide Ice Sheet (LIS) was the largest terrestrial ice sheet on Earth. Its evolution since the Last Glacial Maximum profoundly influenced Earth's geodynamics and surface processes. Investigating the past dynamics of the LIS provides critical insights into how contemporary ice sheets may respond to ...
Alexis P. Belko, Alexandre Normandeau, Patrick Lajeunesse, Audrey Limoges   +3 more
wiley   +1 more source

Seasonally Intensified Mud Shrimp Bioturbation Hinders Seagrass Restoration

Journal of Marine Science and Engineering
Understanding how disturbances affect marine foundation species is critical for enhancing the success of coastal ecosystem restoration. Extreme bioturbation by burrowing animals is increasingly impacting coastal vegetated habitats worldwide, with the ...
Youngwoo Seo, Taewon Kim, Juhyung Lee
doaj   +1 more source