Zobrazeno 1 - 10
of 80
pro vyhledávání: '"W. Ebenhöh"'
Publikováno v:
Ecological Complexity. 6:172-182
In a line of model trees the heights tend to vary with period 7 in many cases. This is the observable effect of an interesting structural reason: in the parameter space just beyond the border of the stability range of homogeneous heights stationary s
Autor:
Cora Kohlmeier, W. Ebenhöh
Publikováno v:
Ocean Dynamics. 59:393-415
The ecological tidal model simulates the cycling of carbon, nitrogen, phosphate, and silicate and describes the tidal, diurnal, and annual dynamics of the back barrier area of the island Spiekeroog in the German Bight. The region is characterized by
Autor:
Cora Kohlmeier, W. Ebenhöh
Publikováno v:
Ecological Modelling. 207:293-303
In earlier Lagrangian descriptions of aquatic systems point tracers were considered for describing the pelagic part of the systems. A coupling of such a model to a benthic model is not satisfactory if the system’s water level is variable and mass c
Autor:
Cora Kohlmeier, W. Ebenhöh
Publikováno v:
Ecological Modelling. 202:297-310
The here presented model EcoTiM (Ecological Tidal Model) simulates the cycling of carbon, nitrogen, phosphate, and silicate and describes the tidal, diurnal, and annual dynamics within the back barrier system of the East Frisian island Spiekeroog. Th
Publikováno v:
Ecological Modelling. 174:241-252
Steep horizontal nutrient gradients are observed in the Wadden Sea. Along a transect from the German Bight to the mainland shoreline the concentrations of nitrate, ammonium, phosphate and silicate increase three to fivefold. This is surprising in vie
Publikováno v:
Hydrological Processes. 15:81-96
A lattice Boltzmann automaton (LBA) is used as a modelling approach to investigate the influence of pore-space geometry on intrinsic processes and component distributions in recent tidal sediments. The simulations are performed on real pore-space str
Autor:
L. Berthe-Corti, W. Ebenhöh
Publikováno v:
Biosystems. 49:161-189
In a series of 16 experiments, hexadecane in different concentrations was mixed with natural Wadden Sea sediments, and the degradation of the alkane was observed under controlled conditions (bioreactor). The aim of the experiments was to quantify the
Publikováno v:
Netherlands Journal of Sea Research. 33:423-452
The submodel describing benthic biology including a bioturbation module as incorporated in the European Regional Seas Ecosystem Model (ERSEM) is discussed. It is linked to a nutrient dynamic model. The structure of the benthic model food web is prese
Autor:
Cora Kohlmeier, W. Ebenhöh
Publikováno v:
Bulletin of Mathematical Biology. 57:401-411
Cannibalism can have a stabilizing effect in a predator-prey system. Contrary to the intuitive expectation cannibalism of the predator leads to an increase of the standing stocks of both, prey and predator.
Autor:
W. Ebenhöh
Publikováno v:
Ecological Modelling. :83-98
Competition and coexistence are discussed in the framework of multispecies and simple food web models. A class of models is defined where for steady state solutions the principle of competitive exclusion acts. With variable environments, however, the