Results 261 to 270 of about 271,773 (312)
Some of the next articles are maybe not open access.
Alternative states in shallow lakes
Trends in Ecology & Evolution, 1998Ecology of Shallow Lakes by Marten Scheffer Chapman and Hall (Population and Community Biology Series 22), 1998. £45.00/$79.65 hbk (xx+357 pages) ISBN 0 412 74920 3.
openaire +2 more sources
Nonstationary models for shallow lakes
Asymptotic Analysis, 2000In this paper we study the behaviour of solutions of Navier–Stokes equations with adherence to the bottom and traction by wind at the surface when the aspect ratio $\delta=\hbox{depth}/\hbox{lenght}$ of the domain tends to 0. Precisely, we prove that when wind is moderate, a variational solution converges to the solution of a vertical diffusion model.
Bresch, Didier +2 more
openaire +2 more sources
EXCHANGE FLOW IN A SHALLOW LAKE EMBAYMENT
Ecological Applications, 2008Convectively driven currents can arise in the littoral zones of lakes, as a result of either differential heating or differential cooling of the shallow water. The result of these flows is to produce a surface flow away from shore with a bottom return flow or a bottom flow away from shore with a surface return flow.
Sveinn O, Pálmarsson +1 more
openaire +2 more sources
Internal phosphorus loading in shallow Danish lakes
Hydrobiologia, 1999High phosphorus concentrations due to internal loading from the sediment with a strongly negative impact on lake water quality, is often seen in shallow lakes after a reduction of external loading. To analyse the nature of internal loading we studied 1. the seasonal phosphorus concentrations of 265 Danish shallow, mainly eutrophic lakes; 2.
Søndergaard, M. +2 more
openaire +2 more sources
2007
The air smells of rain and autumn decay and sends cold, sharp fingers poking through our clothes as the Lonesome Boatman steers our little craft along the shore of the Holy Nose. Beyond the gunwales of the boat, spears of orange and emerald march up the steep hillside—the ubiquitous larch and birch, cedar and fir, muted under the thick sky.
openaire +1 more source
The air smells of rain and autumn decay and sends cold, sharp fingers poking through our clothes as the Lonesome Boatman steers our little craft along the shore of the Holy Nose. Beyond the gunwales of the boat, spears of orange and emerald march up the steep hillside—the ubiquitous larch and birch, cedar and fir, muted under the thick sky.
openaire +1 more source
Simulation of Shallow Lake Eutrophication
2007Natural and man induced water pollution affects the functioning of freshwater ecosystems, restricts various water uses and risks human health. Especially, internal pollution by nutrient remobilization from sediment plays an important role in shallow water bodies.
openaire +1 more source
Circulation in Shallow Homogenous Lakes
Journal of the Hydraulics Division, 1969The steady state, wind driven circulation of a shallow, homogeneous lake on a rotating earth is studied by means of a solution of the equations of fluid motion. The equations are linearized, dissipation is assumed to result only from bottom friction and a constant eddy viscosity is employed.
openaire +1 more source
Shallow lake aquaculture mesocosms
This dataset contains results from a controlled mesocosm experiment examining the impact of varying concentrations of florfenicol on microbial community dynamics within water and sediment environments over a period of 42 days.openaire +1 more source
Modelling Eutrophication of Shallow Lakes
1988Many shallow lakes suffer from eutrophication due to high inputs of nutrients relative to the water volume. It is therefore not astonishing that many eutrophication models have been developed for shallow lakes. This chapter will attempt to present the state of the art in modelling the eutrophication process for shallow lakes today by offering a summary
openaire +1 more source