Results 261 to 270 of about 3,279,066 (304)

The trophic status of two Northern Irish sea loughs

Journal of Coastal Conservation, 1996
Studies were conducted on nutrient cycling in two coastal embayments; Strangford Lough and Belfast Lough, in order to classify these coastal waters in compliance with the European Union Urban Waste Water Treatment and Nitrates Directives. Analysis of the data suggests that Strangford Lough is nitrogen-limited throughout much of the growing season with ...
M. Service, A. E. Durrant, J. A. Mills, J. E. Taylor, D. Faughey   +4 more
openaire   +1 more source

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.
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

Trophic status of rivers in the Forth catchment, Scotland

Aquatic Conservation: Marine and Freshwater Ecosystems, 1997
1. An increase in nutrient concentrations in fresh water may pose a threat to water quality, biodiversity, and the uses to which these resources are subject. Compared with standing waters, the trophic status of running water has been neglected with few studies describing the extent of eutrophication in rivers. 2.
M. W. MARSDEN, M. R. SMITH, R. J. SARGENT   +2 more
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

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.
openaire   +3 more sources

Trophic status and the pelagic system in Lago Maggiore

Hydrobiologia, 1990
Long-term data on the main limnological parameters enabled a description of recent trophic evolution of Lago Maggiore (N. Italy). The results allow a better definition of the conditions of lake eutrophication and recovery. Moreover, they identify some important phenomena that show resilience in the lake’s biota.
R. de Bernardi, G. Giussani, M. Manca, D. Ruggiu   +3 more
openaire   +1 more source

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.
openaire   +1 more source