نتایج جستجو برای: maharlu lake

تعداد نتایج: 42295  

Compliance with the drought, due to the complex nature of the phenomenon, depends on a variety of social, economic, environmental, infrastructure and management factors, and the development process of villages located in drought conditions also depends on several factors that are caused by drought conditions. The drying of Lake Urmia has also made the necessity and importance of adapting rural ...

Urmia Lake is the largest lake in the Iranian plateau and the second largest Salt Lake in the world. This study was conducted to identify hypersaline bacteria in the lake through the screening with molecular markers. For the molecular study of the bacterial microbiome of the lake, samples were collected from water, sludge and soil of the different parts of the lake during different seasons of 2...

2006
Fasong Yuan Stephen S. Howe

Walker Lake, a hydrologically closed, saline, alkaline lake located along the western margin of the Great Basin of western United States, has experienced a 77% reduction in volume and commitment drop in lake level as a result of anthropogenic perturbations and climatic fluctuations over the last century. The history of lake-level change in Walker Lake has been recorded instrumentally since 1860...

Journal: :Environmental science & technology 2006
Ning Gao N Gabriel Armatas James B Shanley Neil C Kamman Eric K Miller Gerald J Keeler Timothy Scherbatskoy Thomas M Holsen Thomas Young Lyn McIlroy Stephen Drake Bill Olsen Carol Cady

A mass balance model for mercury in Lake Champlain was developed in an effort to understand the sources, inventories, concentrations, and effects of mercury (Hg) contamination in the lake ecosystem. To construct the mass balance model, air, water, and sediment were sampled as a part of this project and other research/monitoring projects in the Lake Champlain Basin. This project produced a STELL...

Journal: :Scientific reports 2015
Dong Xie Hengjie Zhou Hong Zhu Haiting Ji Ning Li Shuqing An

Potamogeton crispus is widely used in submerged macrophyte restoration in China. Turions are an important means of reproduction in this species. To compare the regeneration abilities of P. crispus turions in macrophyte- and phytoplankton-dominated lakes, we collected P. crispus turions from a macrophyte-dominated lake (Liangzi Lake) and a phytoplankton-dominated lake (Taihu Lake). Both lakes ar...

2011
Jeffrey W. Hollister W. Bryan Milstead M. Andrea Urrutia

Information about lake morphometry (e.g., depth, volume, size, etc.) aids understanding of the physical and ecological dynamics of lakes, yet is often not readily available. The data needed to calculate measures of lake morphometry, particularly lake depth, are usually collected on a lake-by-lake basis and are difficult to obtain across broad regions. To span the gap between studies of individu...

2012
DAVID M. WRIGHT DEREK J. POSSELT ALLISON L. STEINER

High-resolution Weather Research and Forecasting Model (WRF) simulations are used to explore the sensitivity ofGreat Lakes lake-effect snowfall (LES) to changes in lake ice cover and surface temperature.A control simulation with observed ice cover is compared with three sensitivity tests: complete ice cover, no lake ice, and warmer lake surface temperatures. The spatial pattern of unfrozen lake...

2012
Jin Zeng Liuyan Yang Xiaofeng Chen Xiaoming Chuai Qinglong L. Wu

Heavy metal distribution in aquatic ecosystems can be influenced by a variety of factors. In this study, the spatial distribution and seasonal variation of heavy metals (Cd, Ni, Cu, Zn, Cr, and Pb) in lake water and sediments of different lake zones of a large, shallow, eutrophic freshwater lake, Taihu Lake, were investigated. Metal concentrations in the river water, bloom assemblages, and macr...

2017
Ze Ren Fang Wang Xiaodong Qu James J. Elser Yang Liu Limin Chu

Understanding microbial communities in terms of taxon and function is essential to decipher the biogeochemical cycling in aquatic ecosystems. Lakes and their input streams are highly linked. However, the differences between microbial assemblages in streams and lakes are still unclear. In this study, we conducted an intensive field sampling of microbial communities from lake water and stream bio...

2002
David W. Leverington Jason D. Mann James T. Teller

Computer reconstructions of the bathymetry of the lake were used to quantify variations in the size and form of Lake Agassiz during its final two phases (the Nipigon and Ojibway phases), between about 9200 and 7700 14C yr B.P. (ca. 10,300–8400 cal yr B.P.). New bathymetric models for four Nipigon Phase stages (corresponding to the McCauleyville, Hillsboro, Burnside, and The Pas strandlines) ind...

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