This dissertation including
16 selected English papers and book contributions
was accepted by the Faculty of Natural Sciences,
Aarhus University , for the doctor’s degree
in natural sciences. The dissertation describes
the dynamic interactions between nutrients,
the sediment and the biological conditions
in lakes.
First, Danish lake types are characterised
and their development described relative
to changes in nutrient loading. After this
a more detailed description is given of
lake retention of nutrients, including the
binding of phosphorus in the sediment and
the exchange of phosphorus between the sediment
and the water phase. Next follows a section
on the multiple mechanisms behind the release
and uptake of phosphorus in the sediment.
As a user-oriented aspect, lake restoration
and the results obtained from the various
chemical and biological methods applied
in Denmark so far are treated. Finally,
reflections are made on future management
and research issues for Danish lakes, including
the future climate and the implementation
of the EU Water Framework Directive.
Nutrient dynamics in lakes - with emphasis
on phosphorus sediment and lake restoration.
Doctor's dissertation (DSc). By Søndergaard,
M., 2007. 72 pp., The dissertation in Pdf-format
(3.775 kB).
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Doctor's degree awarded to Martin Søndergaard
28. juni 2007 - Senior scientist Martin
Søndergaard, Dept. of Freshwater
Ecology at Denmark ’s National Environmental
Research Institute, University of Aarhus
has been awarded the doctor’s degree in
natural sciences for his dissertation “Nutrient
dynamics in lakes - with emphasis on phosphorus,
sediment and lake restoration”.
The dissertation – including 16 selected
English papers and book contributions -
describes the dynamic interactions between
nutrients, the sediment and the biological
conditions in Danish lakes.
A section describes the multiple mechanisms
behind the release and uptake of phosphorus
in the sediment. As a user-oriented aspect,
lake restoration and the results obtained
from the various chemical and biological
methods applied in Denmark so far are treated.
Finally, reflections are made on future
management and research issues for Danish
lakes, including the future climate and
the implementation of the EU Water Framework
Directive.
Martin Søndergaard
