r a 200 .018 .: +1 303 er@usgs Likens). Summary Few detailed evaporation studies exist for small lakes or reservoirs in mountainous settings. A detailed evaporation study was conducted at Mirror Lake, a 0.15 km lake in New Hampshire, northeastern USA, as part of a long-term investigation of lake hydrology. Evaporation was determined using 14 alternate evaporation methods during six open-water s...

The Lake Michigan model, MICH1, was developed more than 30 years ago. This framework was evaluated using field data collected in 1976 and was later applied to predict total phosphorus and phytoplankton concentrations in Lake Michigan during the 1980s and early 1990s. With a renewed interest in the interaction of phytoplankton with toxics and the applicability to Total Maximum Daily Load studies...

Sediments from Xinyun Lake in central Yunnan, southwest China, provide a record of environmental history since the Holocene. With the application of multi-proxy indicators (total organic carbon (TOC), total nitrogen (TN), δ13C and δ15N isotopes, C/N ratio, grain size, magnetic susceptibility (MS) and CaCO3 content), as well as accelerator mass spectrometry (AMS) 14C datings, four major climatic...

Stable isotope ratios of various organisms were analyzed to elucidate food web structure in the pelagic zone of Lake Baikal. The pelagic food web of Lake Baikal is simple and consists of five major ecological groups: phytoplankton (Aulacoseira baicalensis), mesozooplankton (Epischura baicalensis), macrozooplankton amphipod (Macrohectopus branickii), fish (Coregonus autumnalis migratorius and fo...

Gaming revenue trends for Nevada's three major gaming markets-Las Vegas Strip, Reno-Sparks, and South Lake Tahoe-are examined over the past two decades. The Las Vegas Strip had been characterized by cyclical growth from 1990 until 2007, but the Great Recession had dramatic adverse impacts on revenues and employment. Apparent recovery in 2010 was driven largely by baccarat revenues, but they are...

The oxygen isotopes of water (H2O and H2O) are tracers widely used for the investigation of Earth science problems. The tracer applications are based on the premise that the O/O ratio of open-water evaporation (δOE) can be calculated from environmental conditions. A long-standing issue concerns the role of kinetic fractionation, or diffusion transport, in the evaporation process. Here we deploy...

Paleolimnologists have utilized lake sediment records to understand historical lake and landscape development, timing and magnitude of environmental change at lake, watershed, regional and global scales, and as historical datasets to target watershed and lake management. Resurrection ecologists have long recognized lake sediments as sources of viable propagules ("seed or egg banks") with which ...

300 MW Baspa II is India’s largest private hydroelectric facility, located at the Baspa River which is an important left-hand tributary to the Sutlej River in the NW Himalaya (India). In this valley the Sangla palaeo-lake has been dammed around 8200 yr BP behind a rock-avalanche dam and Baspa II is located exactly on top of this palaeo-lake. This special location represents a very rare possibil...

Sedimentary diatoms in inferring trophic status and limnological changes in boreal lakes Miettinen, Juha O. Sedimentary diatoms in inferring trophic status and limnological changes in boreal lakes. – Analyses of sedimentary diatoms were used for inferring reference (pre-impact) conditions and limnological changes in eastern Fennoscandian lakes. Long-term limnological variation was studied from ...