As Online Environmental Solutions (OES) is a recently registered company we do not have any current projects. However below is a list of projects that Dr. Louise Bruce has previously been involved in. These will give you an idea of how the services of OES can be used to provide solutions to your data
Lake Clifton Salinity Problem
Data collected over a ten year period indicated that the salinity of Lake Clifton in
Western Australia was increasing. To determine whether this increase could be explained
by natural fluctuations in meteorological conditions or as a result of changes in ground water
inflow a mass balance was conducted. The simple model gave a strong indication that salinity
increases were a result of increased salinity in the ground water.
Knott, B, Bruce, L., Lane, J., Konishi, Y. and Burke, C. 2003. Is the salinity of Lake Clifton
(Yalgorup National Park) increasing? JRSWA, 86:119-122.
Nutrient Cycling in Lake Kinneret, Israel
The role of zooplankton in the nutrient cycles of Lake Kinneret were quantified using field data
and a coupled ecological/hydrodynamic model (DYRESM/CAEDYM). The model was parameterized using
laboratory, field and literature studies then validated with extensive field data. Sensitivity
was tested over the parameter set. The model was then used to determine the role of zooplankton
in the carbon, nitrogen and phosphorus cycles of the lake. The contribution of zooplankton to
nutrient cycling was placed in context with the seasonal hydrodynamics of the lake.
Bruce, L.C, et al. 2005. A numerical simulation of the role of zooplankton in C, N and P cycling
in Lake Kinneret Israel. Ecological Modelling 193. 412-43.
Eco-Hydro interactions in Mono Lake
The significance of the transport of nutrient rich hypolimnetic water via the benthic
boundary layer (BBL) on the productivity in Mono Lake was studied using a coupled hydrodynamic
and ecological model validated against field data. The coupled model enabled us to differentiate
between the role of the ecological components and hydrodynamic forcing on the determination of
the ecological patterns in the lake. A four year period of monomixis from 1991-1994 was simulated
to compare periods of stratification and mixing. Simulated fluxes of nitrogen from the BLL were
determined and the timing of these fluxes in the context of seasonal changes in the food web were
evaluated.
Bruce, L.C., Jellison, R., Imberger, J. and Melack, J. 2008. Effect of benthic boundary layer
transport on the productivity of Mono Lake, California under a monomictic mixing regime.
Effect of Zooplankton in Shark Bay Solar Salt
The ecological gradient of seven primary ponds at the Shark Bay Resources solar salt ponds,
Western Australia was studied using a coupled hydrodynamic ecological numerical model,
DYRESM-CAEDYM. By extracting the various carbon fluxes from the model the role that the
introduced zooplankton, Artemia parthenogenetica play in grazing the particulate organic
carbon from the water column in the high salinity ponds was determined. The nutrient fluxes
and stoichiometric ratios of the various organic components for each pond were also extracted
to determine the role that A. parthenogenetica play in the nutrient dynamics of the salt pond
system.
Bruce, L.C. and Imberger, J. (unpub.) The role of zooplankton in the ecological succession of
plankton and benthic algae across a salinity gradient in the Shark Bay solar salt ponds.