This study was conducted from July to December 2004, in order to find measures to
improve the water quality and the function of pond ecosystems which are often
negatively affected by phytoplankton and suspended particle matters. Most of the time,
the management of ponds in Korea does not consider the ecological concepts such as self-
purification and nutrient recycling. Instead, conventional methods depend on other
factors such as fish farming and the function of fountains and waterfalls.
Sustainability of pond ecosystems must be studied with the highest emphasis given to
water quality. Water discharges of inflow and outflow as well as balance adjustment for
different factors must be thoroughly studied. There is a great need for studies on
sustainability because it can be realized through the horizontal or vertical balances
of an ecosystem. Our current research offers useful information to the academia and
public on maintaining sustainability in terms of structure and function of the pond.