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Showing 1 to 13 of 13 for “"Lakes and ponds"”.
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An Improved Model for Estimating Evaporation over Lakes and Ponds
… study is based on the equations, assumptions and empirical relations for conductive, convective and radiative energies that are developed by various researches at the air-water interface conducted in the past. This method is then tested with field data for verifying its correctness. The …
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Assessing Thule Inuit impacts on High Arctic lakes and ponds : a paleolimnological approach
… that centuries prior to European settlement, ponds on Ellesmere and Bathurst Island were impacted by Thule Inuit whalers, whose activities altered nutrient levels in nearby ponds. Two Thule Inuit whaling sites were selected based on input from several archaeologists, to ensure good coverage of …
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Limnological and paleolimnological investigations of environmental change in three distinct ecosystem types, Canadian High Arctic
… remains preserved in the sediments of Arctic lakes and ponds in the Canadian High Arctic are important indicators of environmental change, especially as long-term instrumental data are often lacking. Although recent studies have underscored variability amongst these aquatic ecosystems, data …
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Opportunities and Constraints of Sierra Nevada Meadow Restoration for the Mountain Yellow-Legged Frog Species Complex
… of disease, introduced species, habitat loss, and climate change. The mountain yellow-legged frog (MYLF), once considered the most abundant vertebrate in the Sierra Nevada, has suffered dramatic population declines in recent decades, and implications of their decline include biodiversity …
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Chemical Survey of Selected South Dakota Lake Sediments
Available phosphorus, organic carbon, and organic nitrogen were measured in bottom sediments of 16 lakes and ponds in northeast South Dakota. These lakes were glaciated, relatively shallow, and productive. Ranges of the surface sediments were: available phosphorus, 2 to 42 ppm; organic carbon, 0.94 …
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Examining Fluorescent Decay Rates For Microbial Source Tracking In South Carolina Blackwater Systems
<p>Richland County, South Carolina, has many watersheds appearing on the EPA's 303(d) list, including the Gills Creek watershed. This study interprets current water quality data within the Gills Creek watershed through the use of intensive target stream sampling for Escherichia coli (E. coli) as …
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Using high resolution satellite imagery to map aquatic macropyhtes on multiple lakes in northern Indiana
Resource managers need to be able to quickly and accurately map aquatic plants in freshwater lakes and ponds for regulatory purposes, to monitor the health of native species and to monitor the spread of invasive species. Site surveys and transects are expensive and time consuming, and low …
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Intra- and Inter-Seasonal Variability of Supra-Glacial 1 Streams and Lakes over the West Greenland Ice Sheet 2 from High-Resolution Satellite Optical Data
<p>The Greenland ice sheet (GrIS) is one of the largest glacial ice masses on Earth, second only to the Antarctic ice sheet. The surface hydrology of the GrIS plays a crucial role on the surface energy and mass balance budgets of the ice sheet as a whole. Surface water, known as supra-glacial …
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Identification and Characterization of Late Pathway Enzymes in Phytic Acid Biosynthesis in Glycine max
… digested by non-ruminant animals such as swine and poultry, and it chelates mineral cations including calcium, iron, zinc, and potassium, classifying it as an anti-nutrient. The excretion of unutilized phytic acid in manure translates to an excess amount of phosphorus runoff that can lead to …
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The fate of anthropogenic nitrogen in a redox stratified pond: an isotopic approach
… effects of both increased urbanization and eutrophication are of growing global concern. Coastal areas, like those found on Cape Cod, Massachusetts, often experience severe impacts associated with the biogeochemical effects accompanying increased nitrogen pollution. Cape Cod is home to …
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Depositional environments of a portion of the Bullion Creek Formation (Paleocene), Western Billings County, North Dakota
… predominantly of mudrocks , with fine-grained sandstone, lignite, and rare limestone lenses . Previous workers have postulated combinations of fluvial and lacustrine depositional environments for the rocks. </p><p> The study area covers 15 square kilometres in the badlands of the Little Missouri …
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Quaternary geology of Rolette County, North Dakota
… the southeastern part of the Turtle Mountains and part of the glacial Lake Souris basin. Basic lithologies recognized in the surface sediments were bedded clay, silt, sand, and gravel; and three types of non-bedded diamicton. These were combined and, with bedding characteristics and organic …
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In situ Metabolism and Biogeography of Phototrophic Consortia
>>Novel bacteriochlorophyll e structures and species-specific variability of pigment composition in green sulfur bacteria<< The relative composition of bacteriochlorophyll (BChl) homologs in five different strains of brown-colored green sulfur bacteria was investigated by HPLC-MS/MS and NMR …