Journal ArticleDOI
Nutrient Supply and Primary Production in Clear Lake, Eastern Ontario
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Clear Lake, a small Canadian Shield lake that has been influenced little by human activity, was found to be more productive than expected from chemical and optical properties and geological surroundings, although most of the sodium, potassium, and silica entering the lake is weathered from the terrestrial watershed.Abstract:
Clear Lake, a small Canadian Shield lake that has been influenced little by human activity, was found to be more productive than expected from chemical and optical properties and geological surroun...read more
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Journal ArticleDOI
Comparative limnology of a deep-discharge reservoir and a surface-discharge lake on the Madison River, Montana
Dan B. Martin,Ronald D. Arneson +1 more
TL;DR: In this paper, the authors measured phytoplankton standing crop, primary production, light penetration, temperature, and various chemical concentrations in a man-made, deep-discharge, reservoir and in a natural, surface discharge, lake in order to relate limnological conditions in the two bodies of water to their depth of outflow.
Journal ArticleDOI
Light climate and phytoplankton photosynthesis in maritime Antarctic lakes
TL;DR: The responses of phytoplankton populations to seasonal changes in radiation flux in two Antarctic lakes with extensive winter ice-cover are described in this article, where a phyto- algae capable of photosynthesis was found throughout the year in both systems.
Journal ArticleDOI
Quantifying components of the phosphorus cycle in temperate forests
TL;DR: In this article, the state-of-the-art of cross-disciplinary knowledge on phosphorus cycling in temperate forest ecosystems, focused at studies from hydrology, biology, biogeochemistry, soil-, and geosciences, is reviewed.
BookDOI
Phosphorus in Freshwater Ecosystems
Gunnar Persson,Mats Jansson +1 more
TL;DR: The geochemistry, availability and abundance of different forms of phosphorus in soil, water and sediments are reviewed in this article, and the present knowledge of phosphorus pathways in ecosystems and their regulation is discussed.
Journal ArticleDOI
Limnological studies of the lakes and streams of the upper Qu'Appelle River System, Saskatchewan, Canada
TL;DR: In this article, the authors studied the upper Qu'Appelle River basin during the 1959-1969 period and found that all lakes except Last Mountain were considerably more saline than during the 1937-1941 period.
References
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Journal ArticleDOI
A Working Model for the Variation in Stream Water Chemistry at the Hubbard Brook Experimental Forest, New Hampshire
TL;DR: In this article, the authors show that during the summer, biologic activity measurably reduces the concentration of nitrate and potassium in stream water, while hydrogen ion, aluminum, and nitrate concentrations are increased.
Journal ArticleDOI
Nutrient Loss Accelerated by Clear-Cutting of a Forest Ecosystem
TL;DR: The forest of a small watershed-ecosystem was cut in order to determine the effects of removal of vegetation on nutrient cycles, and the cut ecosystem exhibited accelerated loss of nutrients.
Journal ArticleDOI
Nitrification: importance to nutrient losses from a cutover forested ecosystem.
TL;DR: The nitrate concentration (weighted average) in stream water from an experimentally deforested watershed increased from 0.9 milligram per liter before removal of the vegetation to 53 milligrams per liter 2 years later.
Journal ArticleDOI
Rate of chemical weathering of silicate minerals in New Hampshire
TL;DR: In this article, the losses of dissolved Ca, Na, Mg and K have been determined for six small watersheds in New Hampshire during the period 1963-1967, from the rate at which Ca and Na are lost, the steady-state chemical weathering rate is calculated at 800 kg of bedrock-till per hectare per year.
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