Oxygen isotope analysis of benthic foraminifera in deep sea cores from the Atlantic and Southern Oceans shows that during the last interglacial period, North Atlantic Deep Water (NADW) was 0.4 degrees +/- 0.2 degrees C warmer than today, whereas Antarctic Bottom Water temperatures were unchanged. Model simulations show that this distribution of deep water temperatures can be explained as a resp...

The radiogenic neodymium (Nd) isotope composition of foraminiferal shells provides a powerful archive to investigate past changes in sources and mixing of water masses. However, seawater Nd isotope ratios extracted from foraminiferal shells can be biased by contaminant phases such as organic matter, silicates, or ferromanganese coatings, the removal of which requires rigorous multiple step clea...

ABSTRACT Perched marshes in Lunenburg County differ exposure to prevailing waves (from most least exposed: Crescent Beach, Blue Rocks, Feltzen South). We sampled the middle marsh, recording replicates’ dried masses. In picking stage 1 (PS1), first 400 foraminifera, whether agglutinated or calcareous-walled, were picked and identified. From these data we calculated Shannon Function H compared be...

Through the analysis of benthic foraminifera in soft bottom sediments Laizhou Bay – Yellow River Delta system, this study characterized foraminiferal biotopes and explored possibility obtaining an index ecological quality comparable with other estuarine coastal environments world. Five have been identified their distribution patterns highlight stress from marine-fluvial water mixing pollution. ...

A. Nikulina et al.

Biological response and ecological indices of benthic communities, such as greater mortality of foraminifera and shell abnormalities, have been used to document pollution effects on ecosystems. Shadegan Wetland was damaged from a deposition of huge amounts of soot and products of burning oilwells of Kuwait as well as chronic exhaust fumes of refinery and industrial furnaces. In this investigati...

Studies of the effects of the Central American Seaway’s closure on microfossil taxa and stable isotopes of foraminifera previously addressed the timing of emplacement of the Caribbean–tropical eastern Pacific sill, changes in marine nutrients, evolutionary and paleobiogeographic events associated with closure, and rates of uplift in Central America. However, there have been no quantitative stud...

Micropaleontological analysis of sixty (62) ditch cuttings rock samples collected from interval, 7800 feet to 12,002 well AD, located offshore western Niger Delta was carried out for the investigation their age and paleodepositional environment. Standard methods techniques foraminiferal sample processing were followed disaggregate microfauna matrix. The studied interval is predominantly made up...

This Special Issue “Bio-Geochemistry of Heavy Metals/Metalloids” contains a series papers that cover range topics highlighting the role microorganisms in ore-forming biochemical processes and potential environmental risk (the first to fourth papers), assessment potentially toxic element contamination using plants living benthic Foraminifera fifth sixth phytoremediation contaminated land seventh...