Influence of Chironomus riparius (Diptera, Chironomidae) and Tubifex tubifex (Annelida, Oligochaeta) on oxygen uptake by sediments. Consequences of uranium contamination [PDF]
, 2008 The diffusive oxygen uptake (DOU) of sediments inhabited by Chironomus riparius and Tubifex tubifex was investigated using a planar oxygen optode device, and complemented by measurements of bioturbation activity.
Bonzom, Jean-Marc +5 more
core +3 more sources
Scientific Reports, 2023 Chernozems/Phaeozems are important agricultural resources and have been intensively used for millennia. However, their origin and age are still controversial. In Europe, the westernmost widespread Chernozem/Phaeozem area is located in Central Germany. In
Hans von Suchodoletz +5 more
doaj +1 more source
Mixed Signals: interpreting mixing patterns of different soil bioturbation processes through luminescence and numerical modelling [PDF]
SOILSoil bioturbation plays a key role in soil functions such as carbon and nutrient cycling. Despite its importance, fundamental knowledge on how different organisms and processes impact the rates and patterns of soil mixing during bioturbation is lacking ...
W. M. van der Meij +3 more
doaj +1 more source
Deep Learning Applications in Geosciences: Insights into Ichnological Analysis
Applied Sciences, 2021 Ichnological analysis, particularly assessing bioturbation index, provides critical parameters for characterizing many oil and gas reservoirs. It provides information on reservoir quality, paleodepositional conditions, redox conditions, and more. However,
Korhan Ayranci +3 more
doaj +1 more source
Effects of hypoxia on benthic macrofauna and bioturbation in the Estuary and Gulf of St. Lawrence, Canada [PDF]
, 2010 The bottom water in the 4300 m deep Lower St. Lawrence Estuary (LSLE) is persistently hypoxic in contrast to the normoxic bottom waters in the Gulf of St. Lawrence (GSL). We photographed the seabed at 11 stations in the Estuary and Gulf of St.
Archambault, Philippe +4 more
core +4 more sources
Chronology for climate change: Developing age models for the biogeochemical ocean flux study cores [PDF]
, 2004 We construct age models for a suite of cores from the northeast Atlantic Ocean by means of accelerator mass spectrometer dating of a key core, BOFS 5K, and correlation with the rest of the suite.
Manighetti, B +3 more
core +1 more source
Imaging Oxygen Distribution in Marine Sediments. The Importance of Bioturbation and Sediment Heterogeneity [PDF]
, 2008 The influence of sediment oxygen heterogeneity, due to bioturbation, on diffusive oxygen flux was investigated. Laboratory experiments were carried out with 3 macrobenthic species presenting different bioturbation behaviour patterns:the polychaetes ...
AK Hannides +49 more
core +4 more sources
Multiscale Brazil nut effects in bioturbated sediment [PDF]
Scientific Reports, 2022 AbstractSize segregation in granular materials is a universal phenomenon popularly known as the Brazil nut effect (BNE), from the tendency of larger nuts to end on the top of a shaken container. In nature, fast granular flows bear many similarities with well-studied mixing processes.
Savranskaia, T., Egli, R., Valet, J.
openaire +6 more sources
Multiple Sulfur Isotope Geochemistry during the Permian-Triassic Transition
Geosciences, 2021 The end-Permian mass extinction was the largest biodiversity crisis in the Phanerozoic. Based on characteristic negative ∆33S signals of sedimentary pyrite, previous multiple sulfur isotope studies suggested shoaling of anoxic/sulfidic deep-waters onto a
Masafumi Saitoh
doaj +1 more source
Biology, 2021 Global warming and the subsequent increase in the frequency of temperature anomalies are expected to affect marine and estuarine species’ population dynamics, latitudinal distribution, and fitness, allowing non-native opportunistic species to invade and ...
Daniel Crespo +6 more
doaj +1 more source