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"Investigating the Effect of Oxidants on the Quantification and Charact" by Mark Constantine IV, Xiaohong Zhu et al.

This study examined the effects of commonly used oxidants in sedimentary macroscopic charcoal analysis on two sediment cores from Thirlmere Lakes National Park, Southeast Australia. The cores, from Lake Werri Berri (WB3) and Lake Couridjah (LC2), span ~900 years and 135,000 years, respectively. The Charcoal Accumulation Rate (CHAR) for both charcoal area and count was quantified using four different chemical treatments and compared to a control using only water. We also quantified the Charring Intensity (CI) of isolated charcoal fragments, a proxy for the severity/intensity of fire, determined using the FTIR spectral characteristics of the remaining charcoal after each treatment. We found significant differences in both the area and number of particles across all treatments in both cores. Significantly, we found substantial differences in CI between treatments, with few charcoal particles formed in low-severity fire (e.g., below ~400 °C or 3.0 °C.s.106) in groups treated with an oxid ....

Werri Berri , New South Wales , Thirlmere Lakes National Park , Lake Werri Berri , Lake Couridjah , Charcoal Accumulation Rate , Charring Intensity , Charcoal Analysis , Harring Intensity Ci , Cultural Burning , Ftir Spectroscopy ,

"The transition from an Indigenous to a European influenced fire regime" by Mark Constantine, Xiaohong Zhu et al.

The drivers of fire regimes prior to the European occupation of Australia are still contentious, with some advocating regimes dominated by anthropogenic ignitions and others advocating a climate source or mixture of these elements. Here, we examine an 850-year history of fire regimes at Lake Werri Berri in south-east Australia, prior to and following European occupation. Macroscopic charcoal and FTIR spectroscopy were used to infer broad changes of the fire regime in proximity to the lake. We found little change through much of the 850-year period and most interesting, no apparent change following the initial displacement of Indigenous peoples and the introduction of farming and woodcutting to the region by Europeans. From the mid-20th Century onwards, there was an increase in both area burnt and fire severity or intensity, likely the result of increased fuel load and connectivity following an extended period of increased precipitation and heavier recreational land usage, which likely ....

Werri Berri , New South Wales , Lake Werri Berri , Charcoal Analysis , Cultural Burning ,

"Coherent changes in wood charcoals, site occupation and lithic technol" by Alex Mackay and Caroline R. Cartwright

We explore the correspondence between changing palaeoenvironments, patterns of site use, and lithic technology at the rock shelter site Klein Kliphuis (South Africa) across the interval 65–55 000 years before present. This period coincides with the termination of Marine Isotope Stage (MIS) 4, and the disappearance of an iconic late Pleistocene archaeological unit known as the Howiesons Poort. Wood charcoals indicate sufficient soil moisture around Klein Kliphuis throughout the Howiesons Poort to support diverse tree species at a time when site occupation was relatively intense. At least some fuelwood-gathering in this period may have been undertaken to support heat treatment of silcrete, which was the dominant lithology in tool production. A coherent set of changes occurs across the MIS 4/3 transition: occupational intensity declines, tracked by declining diversity of fuelwood species, an increase in the proportion of charcoals from shrubs and small flowering plants, lower prevalence ....

Klein Kliphuis , South Africa , Marine Isotope Stage , Howiesons Poort , African Middle Stone Age , Charcoal Analysis , Heat Treatment , Howiesons Poort , Lithic Technology ,

Covid, il nuovo Dpcm in vigore fino a Pasquetta. Variante inglese la più diffusa, contagia i giovani

Covid, il nuovo Dpcm in vigore fino a Pasquetta. Variante inglese la più diffusa, contagia i giovani
stabiachannel.it - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from stabiachannel.it Daily Mail and Mail on Sunday newspapers.

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Campania - Vaccinazioni prioritarie per i lavoratori dell'igiene ambientale

Campania - Vaccinazioni prioritarie per i lavoratori dell'igiene ambientale
stabiachannel.it - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from stabiachannel.it Daily Mail and Mail on Sunday newspapers.

Dominic Ferraro , Campania Vaccinations , Hygiene Environmental , Xxii December , Display Passion Chievo , Charcoal Analysis , Luke War , Juve Handler Padalino , Pompeii Finding , ஆதிக்கம் செலுத்தும் ஃபெராரோ ,