搜索结果: 1-15 共查到“理学 Lake sediments”相关记录20条 . 查询时间(0.086 秒)
Staining of subfossil chironomid head capsules: a method for improving the extraction process from lake sediments and peat
chironomids stain biological
2021/7/26
Subfossil chironomids are regarded as a useful biological proxy for palaeoenvironmental research, but picking chironomid head capsules from aquatic sediments is extremely time-consuming.
Factors controlling the geochemical composition of Limnopolar Lake sediments (Byers Peninsula, Livingston Island, South Shetland Island, Antarctica) during the last ca. 1600 years
Lake sediments Limnopolar high resolution element analysis mineral composition energy dispersive x ray spectrometer glass mineral particles
2015/1/6
We sampled a short (57 cm) sediment core in Limnopolar Lake (Byers Peninsula, Livingston Island, South Shetland Islands), which spans the last ca. 1600 years. The core was sectioned at high resolution...
Arctic Lake Sediments As Records Of Climate Change Using Rock Magnetic Properties and Paleomagnetic Data
Earth sciences Arctic Lacustrine Lake el'gygytgyn Mineralogy Paleoclimate Rock magnetism
2014/10/22
Two lakes were studied in detail for rock magnetic properties: Lake El'gygytgyn, a crater lake formed 3.6Ma in the Far Eastern Russian Arctic, and Heimerdalsvatnet, a Holocene coastal lake located in ...
Environmental Reconstructions from Laminated Lake Sediments, Lake C3, Ellesmere Island, Canadian High Arctic
Environmental Reconstructions Laminated Lake Sediments Lake C3 Ellesmere Island Canadian High Arctic
2014/10/22
Sediments in Lake C3, Ellesmere Island, Nunavut Canada (82°50’N, 78°2’W) contain annual laminations (varves), which provide a record of sediment accumulation for 1900+ years. Varve totals are based on...
7700 Years of Holocene Climatic Variability in Sermilik Valley, Southeast Greenland Inferred From Lake Sediments
Holocene Climatic Variability Sermilik Valley Southeast Greenland Lake Sediments
2014/10/21
During the latter half of the 20th century until present day there has been an unprecedented rise in global annual mean temperatures accompanied by rising sea levels and a decrease in Northern Hemisph...
Constrained microbial processing of allochthonous organic carbon in boreal lake sediments
boreal lake sediments Constrained microbial processing
2014/4/4
We investigated sediment bacterial metabolism in eight lakes with different inputs of allochthonous and
autochthonous organic carbon in south-central Sweden. Sediment bacterial production, mineraliza...
Constrained microbial processing of allochthonous organic carbon in boreal lake sediments
Constrained microbial processing allochthonous organic carbon boreal lake sediments
2014/4/2
We investigated sediment bacterial metabolism in eight lakes with different inputs of allochthonous and autochthonous organic carbon in south-central Sweden. Sediment bacterial production, mineralizat...
Microbial biomass and community composition in boreal lake sediments
boreal lake sediments Microbial biomas
2014/4/4
We used phospholipid fatty acids (PLFA) to determine microbial biomass and community structure in the
sediments of eight boreal lakes with different loadings of allochthonous organic carbon and total...
Mineralization pathways in lake sediments with different oxygen and organic carbon supply
Mineralization pathways lake sediments different oxygen organic carbon supply
2014/4/17
The intensity and pathways of mineralization of sedimentary organic matter were investigated in eutrophic Lake Zug, Switzerland. In a depth transect (25–180 m) from oxic to anoxic bottom water we reco...
Organic carbon burial efficiency in lake sediments controlled by oxygen exposure time and sediment source
Organic carbon burial efficiency lake sediments controlled oxygen exposure time sediment source
2014/4/17
We compared the burial efficiency of organic carbon (buried OC : depositedOC) in a diverse set of 27 different sediments from 11 lakes, focusing on the potential effects of organic matter source, oxyg...
Compound-specific stable isotopes of organic compounds from lake sediments track recent environmental changes in an alpine ecosystem, Rocky Mountain National Park, Colorado
Compound-specific stable isotopes organic compounds lake sediments environmental changes alpine ecosystem Rocky Mountain National Park Colorado
2014/4/18
Compound-specific nitrogen, carbon, and hydrogen isotope records from sediments of Sky Pond, an alpine lake in Rocky Mountain National Park (Colorado, United States of America), were used to evaluate ...
期刊信息
篇名
A Comparison on Accumulation Characteristics of 7Be and 137Cs in Lake Sediments and Surface Soils in Western Yunnan and Central Guizhou, China
语种
中文
撰写或编译
撰写
作者
Bai Z.G.,G.J.Wan,R.G.Huang and ...
Natural inactivation of phosphorus by aluminum in preindustrial lake sediments
Natural inactivation phosphorus aluminum preindustrial lake sediments
2014/4/22
Noncalcareous phosphorus (P)-rich lake sediments typically release P associated with iron hydroxide [Fe(OH)3] during the development of hypolimnetic anoxia. High concentrations of aluminum hydroxide [...
Physical and chemical predictors of diatom dissolution in freshwater and saline lake sediments in North America and West Greenland
Physical and chemical predictors diatom dissolution in freshwater saline lake sediments North America West Greenland
2014/5/4
Diatom dissolution in surface sediment samples from two regional lake datasets in the Northern Great Plains (NGP; n = 64) and West Greenland (n = 40) is assessed using a morphological approach categor...
Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus?
autochthonous lake sediments phosphorus retention
2014/4/30
Eutrophication of various lakes on the Swiss Plateau was targeted in the 1980s by reducing external nutrient
loading and installing aeration/oxygenation systems. For five eutrophic lakes, three...