Results 101 to 110 of about 8,590 (192)

The Sedimentary Carbon-Sulfur-Iron Interplay – A Lesson From East Anglian Salt Marsh Sediments

Frontiers in Earth Science, 2019
We explore the dynamics of the subsurface sulfur, iron and carbon cycles in salt marsh sediments from East Anglia, United Kingdom. We report measurements of pore fluid and sediment geochemistry, coupled with results from laboratory sediment incubation ...
Gilad Antler, Gilad Antler, Jennifer V. Mills, Alec M. Hutchings, Kelly R. Redeker, Alexandra V. Turchyn   +5 more
doaj   +1 more source

Bioturbation: impact on the marine nitrogen cycle

Biochemical Society Transactions, 2011
Sediments play a key role in the marine nitrogen cycle and can act either as a source or a sink of biologically available (fixed) nitrogen. This cycling is driven by a number of microbial remineralization reactions, many of which occur across the oxic/anoxic interface near the sediment surface.
Bonnie Laverock, Jack A. Gilbert, Karen Tait, Mark Osborn, Steve Widdicombe   +4 more
openaire   +3 more sources

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

Archaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather, Matthias Leopold, Kaitlin Sullivan, Kane Ditchfield, Tom Horrocks, Luke Gliganic, Emma Beckett, Diana Patalwala, Emielda Yusiharni, Michael Smirk, William Hiscock, Jo McDonald   +11 more
wiley   +1 more source

Logging of rainforest and conversion to oil palm reduces bioturbator diversity but not levels of bioturbation

Applied Soil Ecology, 2019
Abstract Anthropogenic habitat change is a major driver of species extinctions and altered species communities worldwide. These changes are particularly rapid in the tropics, where logging of rainforests and conversion to agricultural habitats is widespread.
Tuma, J, Fleiss, S, Eggleton, P, Frouz, J, Klimes, P, Lewis, O, Yusah, K, Fayle, T   +7 more
openaire   +1 more source

Evaporitic Chert Provenance: Evaluating Petrographic and Geochemical Workflows for Source Discrimination

Archaeometry, EarlyView.
ABSTRACT Chert tools were widely used in prehistory by human societies due to their knapping suitability and availability, but their relatively uniform composition, especially in evaporitic cherts, complicates sourcing, requiring specialised analytical methods.
Bruno Gómez de Soler, Pablo Rodríguez‐Salgado, Maurice Brodbeck, Judit Bria, Thomas Belgrano, Julian Menuge   +5 more
wiley   +1 more source

Chronology for climate change: Developing age models for the biogeochemical ocean flux study cores [PDF]

, 1995
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, McCave, IN, Shackleton, NJ, Maslin, M   +3 more
core  

Suspended sediment contribution resulting from bioturbation in intertidal sites of a SW Atlantic mesotidal estuary: data analysis and numerical modelling

Scientia Marina, 2018
The suspended sediment contribution arising from the bioturbation activity of Neohelice granulata at intertidal sites of the Bahía Blanca estuary was analysed using several approaches, ranging from field experiments to numerical modelling. Crabs from the
Sabrina Angeletti, Jorge O. Pierini, Patricia M. Cervellini   +2 more
doaj   +1 more source

Palaeoenvironmental and climatic changes from the lateglacial of the Saalian to the Late Weichselian in central Poland: a multiproxy study from Józefów

Boreas, EarlyView.
Józefów site is a case study which provides a detailed record of environmental and climate changes and confirms the main traces of the landscape morphogenesis of the Late Pleistocene established in central‐eastern Europe. This study presents a multiproxy reconstruction of palaeoenvironment under variable climatic conditions from the retreat of the ...
Aleksandra Majecka, Jacek Forysiak, Ryszard Borówka, Andreas Börner, Łukasz Bujak, Leszek Marks, Radosław Mieszkowski, Piotr Moska, Daniel Okupny, Małgorzata Pisarska‐Jamroży, Renata Stachowicz‐Rybka, Krzysztof Stachowicz   +11 more
wiley   +1 more source

Ant and Earthworm Bioturbation in Cold-Temperate Ecosystems

, 2019
In temperate ecosystems, earthworms and ants are the most important organisms for bioturbation. Little is known about how these groups contribute to bioturbation in different environments and to what extent overall bioturbation depends on their diversity.
Taylor, Astrid,, Vegerfors-Persson, Birgitta,, Sveriges lantbruksuniversitet., Lenoir, Lisette,, Persson, Tryggve,   +4 more
core   +1 more source

The Early Upper Palaeolithic open‐air site of Friedrichsdorf‐Seulberg, Germany, in the context of the northern central European Aurignacian

Boreas, EarlyView.
Our knowledge of the Early Upper Palaeolithic occupation in northern central Europe is very limited, and recent research at the open‐air site of Friedrichsdorf‐Seulberg in Hesse, Germany, provides important new information on the Aurignacian. The site is rather small (26.5 m2) and spatial analysis identified a central hearth with two associated ...
Tilman Böckenförde, Gabriele Russo, Neda Rahimzadeh, Felix Bittmann, Nikolitsa Nikolakopoulou, Thomas Terberger   +5 more
wiley   +1 more source