Scientific Project Z1 - Monitoring and site
management
Limnology
Staff
The limnological studies focus on the initial development of the pond
which forms the lowermost hydrological compartment of the Chicken Creek
catchment. The limnological development of the pond is documented with its
physical, chemical and biological seasonal changes.
Chicken Creek pond in September 2007 (photo: R. Ender).
The limnological pond monitoring comprises the following investigations:
• continuous control of water temperature (at the point of greatest depth,
depth profile);
• continuous control of oxygen concentration, electrical conductivity and pH
(at 1 m depth by a multi-parameter probe);
• monthly sampling for the determination of physical, chemical and
biological parameters including depth profiles of physical (temperature,
electrical conductivity, oxygen concentration, turbidity, light attenuation),
chemical (pH) and biological variables (fluorescence of phytoplankton).
The chemical analyses comprise the determination of the main anions and
cations, the important nutrients for primary producers and different carbon
fractions. The biological analyses include bacterioplankton, phytoplankton
and zooplankton. Additionally, emersed and submersed macrophytes are
controlled monthly with regard to species composition and coverage.
The resulting data are part of the central data management of the CRC/TR 38
and are available for all projects for further utilization.
Sampling of Chicken Creek pond in January 2010 (photo: R.
Ender).
Continuous control of water quality by a multi-parameter
probe (photo: R. Ender).
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