Results 261 to 270 of about 62,336 (302)

Estimation of the trophic status of selected Kazakhstan lakes

Russian Journal of General Chemistry, 2014
The trophic status of seven Kazakhstan lakes has been estimated basing on the data on total phosphorus content in the water. The estimated trophic status varies widely, from the oligotrophic-mesotrophic to the eutrophic-hypereutrophic ones.
G. T. Frumin, Yu. V. Krashanovskaya
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On the trophic status and conservation of Kashmir Lakes

Hydrobiologia, 1980
The lakes of the Kashmir Valley are generally shallow and situated in the flood plain of the river Jhelum. Thermal stratification is fairly uncommon, and stable stratification occurs in deeper lakes (12 metres, Manasbal lake). The waters are mostly low in dissolved solids, medium hard and slight to highly alkaline.
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Pituitary Trophic Status as a Tumorigenic Determinant

2007
Pituitary tumors are commonly encountered benign adenomas. Pituitary cell trophic status is an important determinant of pituitary adenoma development. Hormone secreting anterior pituitary cells exhibit slow turnover rates. Subsequent postnatal alterations in pituitary size are determined throughout the lifespan by both extrinsic and intrinsic factors ...
Vera Chesnokov, Run Yu, Anat Ben-Shlomo, Melmed Shlomo   +3 more
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Trophic status of fresh-water lakes in China

Russian Journal of General Chemistry, 2011
In the article the trophic status of thirty one fresh-water lakes of China was described. Four lakes are characterized as mesotrophic, seventeen lakes have eutrotrophic status, and ten lakes are hypertrophic. Critical phosphorus loading for five biggest fresh-water lakes was calculated.
G. T. Frumin, Zhan-Zhan Khuan
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Zooplankton and its grazing as indicators of trophic status in Dutch lakes

Environmental Monitoring and Assessment, 1983
The existing data on the species composition of zooplankton and grazing intensities of crustacean plankton are discussed in the light of trophic status, particularly in the Dutch lakes of varying trophy. Several species of rotifers in northern Europe and North America are considered to indicate eutrophic environments.
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The trophic status of herbivorous fishes on coral reefs

Marine Biology, 2002
Estimates of feeding rates, alimentary tract structure and temporal patterns of food processing obtained from twelve species of nominally herbivorous fishes on the northern Great Barrier Reef were compared. These included members of the families Acanthuridae, Scaridae and Kyphosidae.
Choat, J.H., Clements, K.D., Robbins, W.D.   +2 more
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EVALUATING RESERVOIR TROPHIC STATUS: THE TVA APPROACH

Lake and Reservoir Management, 1984
ABSTRACT TVA tributary and mainstem reservoirs show generalized differences in morphometry, hydraulics, nutrient loads, and response to nutrient conditions. Neither type of reservoir is comparable to the natural lakes on which classical eutrophication studies have been based.
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An integrated methodology for assessment of estuarine trophic status

Ecological Modelling, 2003
This paper describes an integrated methodology for the Assessment of Estuarine Trophic Status (ASSETS), which may be applied comparatively to rank the eutrophication status of estuaries and coastal areas, and to address management options. It includes quantitative and semi-quantitative components, and uses field data, models and expert knowledge to ...
S.B Bricker, J.G Ferreira, T Simas
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Trophic status of the largest freshwater lakes in the world

Lakes & Reservoirs: Science, Policy and Management for Sustainable Use, 2016
AbstractThe problem of lake eutrophication has been a relevant challenge for more than a century. Eutrophication has presently affected not only small‐sized and middle‐sized lakes, but most of the largest lakes in the world as well. The most rapid eutrophication has occurred for shallow water bodies in both tropical and temperate latitudinal zones ...
Anna V. Izmailova, Vladislav A. Rumyantsev   +1 more
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Relationships between Nannoplankton and Lake Trophic Status

Canadian Journal of Fisheries and Aquatic Sciences, 1981
The hypotheses that with increasing eutrophication (1) nannoplankton biomass increases and (2) the relative proportion (percent) of nannoplankton biomass decreases were tested with data from Lake Memphremagog, a lake exhibiting a nutrient gradient, and on a more general scale using published data from a number of lakes.
Susan Watson, Jaap Kalff
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