Results 11 to 20 of about 45,674 (312)

Bottom sediments of lake rotoma [PDF]

, 1983
Lake Rotoma is a deep (70–80 m), oligotrophic, warm monomictic lake of volcanic origin with insignificant stream inflow and no clearly defined outflow. For at least 60 years up to 1972 the lake level fluctuated markedly about an overall rising trend of ...
Nelson, Campbell S., Campbell S. Nelson
core   +1 more source

Lake Water and Sediment [PDF]

Limnology and Oceanography, 1959
In defining the ability of a lake to produce a crop, one begins by taking a unit area for measurement, which is tantamount to saying that productivity is proportional to area. The productivity per unit area, P, has been stated by Hayes to be inversely related to depth, being where m is the mean depth in meters. P will have to be multiplied by a factor
F. R. HAYES, M. A. MACAULAY
openaire   +2 more sources

Evaluating the influence of lake morphology, trophic status and diagenesis on geochemical profiles in lake sediments [PDF]

, 2010
Recent geochemical studies provide evidence that changes in vertical distributions of nutrients in lake sediments are driven by anthropogenic activities, based primarily on trends of increasing concentrations in upper sediment layers.
Pilditch, Conrad A., Trolle, Dennis, Hamilton, David P.   +2 more
core   +1 more source

Distribution of Rare Earth Elements in Sediments of the Marine Lake Mir (Dugi Otok, Croatia)

Geosciences, 2018
The Lake Mir represents a small, isolated, and shallow marine lake situated in the south-eastern part of the Dugi otok Island, in a karstic landscape of the eastern Adriatic coast.
Željka Fiket, Marina Mlakar, Goran Kniewald   +2 more
doaj   +1 more source

Geochemistry and Petrography of the Sediments From the Marginal Areas of Qinghai Lake, Northern Tibet Plateau, China: Implications for Weathering and Provenance

Frontiers in Earth Science, 2021
The provenance study of the sediments from Qinghai Lake is of great significance for the understanding of geological and climatic evolution processes of the Tibet Plateau on the one hand and for evaluating the controlling factors of the sediment ...
Huifei Tao, Lewei Hao, Shutong Li, Tao Wu, Zhen Qin, Zhen Qin, Junli Qiu   +6 more
doaj   +1 more source

Bacterial GDGTs in Holocene sediments and catchment soils of a high Alpine lake: application of the MBT/CBT-paleothermometer [PDF]

, 2011
A novel proxy for continental mean annual air temperature (MAAT) and soil pH, the MBT/CBT-paleothermometer, is based on the temperature (T) and pH-dependent distribution of specific bacterial membrane lipids (branched glycerol dialkyl glycerol ...
Lehmann, M. F., Hopmans, E.C., Stadnitskaia, A., Hopmans, Ellen C., J. S. Sinninghe Damsté, Niemann, Helge, Anselmetti, Flavio S., Sinninghe-Damste, J.S., Stadtnitskaia, A., A. Gilli, Wirth, Stefanie B., Niemann, H., F. S. Anselmetti, M. F. Lehmann, A. Stadnitskaia, E. C. Hopmans, Sinninghe Damsté, J.S.S., Sinninghe Damsté, Jaap S., Lehmann, M.F., Schouten, S., H. Niemann, Sinninghe Damsté, J.S., Stadnitskaia, Alina, S. B. Wirth, Wirth, S.B., Hoppmans, E. C., Schouten, Stefan, Gilli, A., Wirth, S. B., Sinninghe Damsté, J. S., Anselmetti, F.S., Anselmetti, F. S., Lehmann, Moritz F., S. Schouten, Gilli, Adrian; id_orcid   +34 more
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Source Analysis and Ecological Risk Assessment of Heavy Metals in Sediments from Western Lake Area of Taihu Lake [PDF]

长江科学院院报
[Objective] Heavy metal pollution in sediments is a major factor contributing to the deterioration of lake water quality. To accurately assess the sources and potential ecological risks of heavy metals in lake sediments, it is necessary to conduct source
ZHAO Cun-fa, FAN Qi, SU Qing, TIAN Rong, CAI Yi-wei, WANG Hai-xiang, YUAN He-zhong
doaj   +1 more source

The Periglacial Lake Bretjorna (Ledovoe), Western Svalbard: History of Formation and Recent Sedimentation

Лëд и снег, 2023
This paper presents the results of geomorphological, geochronological and lithological investigation of a young sedimentation basin – the periglacial Lake Bretjorna (Ledovoe).
N. I. Meshcheriakov, O. V. Kokin, I. S. Usyagina, N. E. Kasatkina   +3 more
doaj   +1 more source

Variations in radiocarbon ages of various organic fractions in core sediments from Erhai Lake, SW China [PDF]

, 2003
Radiocarbon dating was performed for the extracted organic fractions (cellulose-rich and humic acid fractions of plant fragment; fulvic acid, humic acid and humin fractions of humus substance) and shell from core sediments of the Erhai Lake, SW China ...
Xu, S., Sheng Xu, Guodong Zheng, Zheng, G.   +3 more
core   +1 more source

Comparison among the microbial communities in the lake, lake wetland, and estuary sediments of a plain river network

MicrobiologyOpen, 2019
Sediment microbial communities from plain river networks exert different effects on pollutant transformation and migration in lake basins. In this study, we examined millions of Illumina reads (16S rRNA gene amplicons) to compare lake, lake wetland, and ...
Wei Huang, Xing Chen, Kun Wang, Junyi Chen, Binghui Zheng, Xia Jiang   +5 more
doaj   +1 more source