Search for projects with tag "water quality"

[ID: 240] CATCHMENT SCALE SUSPENDED SEDIMENT EXPORT

Question: How does clear-cutting and subsequent ditch cleaning affect the quality and quantity of exported suspended solids (SS) at the catchment scale? Methods: 1. Turbidity logged every 15 minutes during the ice-free season 2. Suspended Sediment grab sample on average 2x per month all year round a. Use SS grab samples to correlate to turbidity and thus have continuous measurements during active times of the year. 3. Time Integrated Mass Flux Sampling (TIMS) during ice-free season – Integrated measure over 2 weeks 4. Ditch characteristics before and after cleaning a. bed material samples b. measurements of particle size distribution of the bed material c. ditch cross sections at 50 m intervals with high res GPS or total station d. ditch depth, bottom width

ditch cleaning dikesrensning water quality clear-cut

[ID: 147] Analysing the Krycklan water quality data using a landscape systems approach

PI: Gunnar Lischeid

Decades of extensive research in the Krycklan Catchment have unravelled a multitude of hydrological, biogeochemical and biological processes. Whereas clear evidence can be found in the lab or in plot scale studies, a proof of relevance at the landscape scale requires powerful modern methods. To that end two different approaches (Isometric Feature Mapping and Self-Organizing Maps, combined with Sammon's Mapping) are applied to a comprehensive stream and groundwater quality data set.

water quality stream groundwater long-term monitoring non-linear statistics Isometric Feature Mapping Self-Organizing Map Sammons Mapping