Journal ArticleDOI
Nutrient Supply and Primary Production in Clear Lake, Eastern Ontario
Reads0
Chats0
TLDR
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
Citations
More filters
Journal ArticleDOI
The relationship between winter lake cover, radiation receipts and the oxygen deficit in temperate lakes
TL;DR: In this article, the composition, timing and duration of winter lake cover are shown to produce significant spatial and temporal variations in the radiation received at the surface of the water column, and are linked to the timing and rate of oxygen depletion of a temperate lake.
Journal ArticleDOI
Diurnal primary production patterns in seven lakes and ponds in Alberta (Canada).
TL;DR: Series of consecutive short-term experiments using the14C-radio-isotope technique indicated that diurnal primary production patterns were different for lakes and ponds, and there was a significant correlation between solar radiation and phytoplankton production during part-day intervals, except in surface waters of lakes.
Journal ArticleDOI
Alteration to lake trophic status as a means to control arsenic mobility in a mine-impacted lake.
TL;DR: It is proposed that establishment of oligotrophy in the lake should significantly mitigate the current level of dissolved As in lake waters, supported by porewater data which indicate that the flux of As to the water column is significantly reduced when the Fe(III) redox cline is situated at deeper sediment depths.
Journal ArticleDOI
Estimates of mean chlorophyll-a concentration: precision, accuracy, and sampling design
TL;DR: In this article, the authors used data from 56 north-temperate lakes and reservoirs to develop models predicting temporal variance as a function of the mean chlorophyll-a concentration.
Journal ArticleDOI
Physico-chemical environment, phytoplankton biomass and production in oligotrophic, softwater lake kalgaard, Denmark
TL;DR: Water chemistry of Lake Kalgaard in 1976-77 was characterized by low concentrations of total CO2 and inorganic nutrients as mentioned in this paper, and the ionic composition resembled that of precipitation (Na>Ca>Mg >K and Cl>SO4>HCO3).
References
More filters
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.
Related Papers (5)
A modified single solution method for the determination of phosphate in natural waters
J. Murphy,J.P. Riley +1 more