Despite their great importance, Holocene–Late Pleistocene sediments are poorly studied in the valleys of rivers Krasnoyarsk forest-steppe territory. We present first detailed study geochemical composition floodplain terrace valley Berezovka River, and continuous accumulation that occurred at Late Pleistocene-Holocene (from 20833 ± 519 cal yr BP). This is fundamental importance basis for further...

Alteration of local biodiversity by climate change may be especially impactful in the Arctic, where species richness is characteristically low and environmental conditions are changing rapidly. Two arctic large herbivores that survived rapid warming during Pleistocene-Holocene transition, caribou muskoxen, again face accelerated changes vegetation seasonality under contemporary change. While nu...

Abstract The early to middle Holocene Humid Period led a greening of today’s arid Saharo-Arabian desert belt. While this phase is well defined in North Africa and the Southern Arabian Peninsula, robust evidence from Northern Arabia lacking. Here we fill gap with unprecedented annually sub-decadally resolved proxy data Tayma, only known varved lake sediments Arabia. Based on stable isotopes, mic...

dormancy breaking of field maple (acer campestre l.) seed, by gibberllic acid (ga3) at 0, 250, 500 and 1000 ppm in 24 and 48 hours and stratification treatments in moist sand under warm (18-20 °c) and cold (2-4°c) conditions were investigated. effects of ga3 and stratification and their interaction on germination percent (gp) and germination speed (gs) were significant. the highest gp occurred ...

It is widely believed that Australian Aborigines utilized fire to manage many landscapes; however, to what extent this use of fire impacted on Australia’s ecosystems remains uncertain. The late Pleistocene/ Holocene fire history from three sites within the Sydney Basin (Gooches Swamp, Lake Baraba and Kings Waterhole) were compared with archaeological and palaeoclimatic data. The Gooches Swamp r...

Pollen and algae microfossils preserved in sediments from Pyramid Lake, Nevada, provide evidence for periods of persistent drought during the Holocene age. We analyzed one hundred nineteen 1-cm-thick samples for pollen and algae from a set of cores that span the past 7630 years. The early middle Holocene, 7600 to 6300 cal yr B.P., was found to be the driest period, although it included one shor...

Analyses of lithology, organic-matter content, magnetic susceptibility, and pollen in a sediment core from Okpilak Lake, located in the northeastern Brooks Range, provide new insights into the history of climate, landscape processes, and vegetation in northern Alaska since 14,500 cal year BP. The late-glacial interval ([11,600 cal year BP) featured sparse vegetation cover and the erosion of min...

Lithium ore deposits are divided into pegmatite and brine deposits. The Puna Plateau the Qinghai–Tibetan (QTP) home to most abundant lithium worldwide. Very few studies have investigated chronology of This paper reports Optically Stimulated Luminescence (OSL) dating measurements for typical at QTP, including East Taijnar Salt Lake, West Yiliping Lake in central Qaidam Basin. Combining results O...