Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"Secchi Disk Depth"”.
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Habitat Selection and Movement of Pallid Sturgeon in Lake Sharpe, South Dakota
… October 1991. Pallid sturgeon selected the 4-5 m depth interval of water (4.6 ± 0.08 m). They were not found in either backwaters or in submerged trees of former islands or riparian areas. Sixty-four percent of locations were in bottom water current velocities between 0.1 and 30 cm/s (25.7 ± 1.4 …
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Investigating the potential of remote sensing for long-term limnological analysis at pan-continental scales
… compiled covering temperature, chlorophyll a and Secchi disk depth in 23 European lakes spanning the last 30 years. The characteristics of these lake systems were explored and similarities in their ecological behavior identified, thus providing the basis for their grouping. Then the potential of …
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Nahrungsnetzbewirtschaftung in Mittelgebirgstalsperren
… structure always resulted in an improvement in secchi-disk depth, often accompanied by a vertical restructuring of the water column favouring the development of metalimnetic algal populations. A decrease in summer chlorophyll concentrations in the trophogenic zone was only achieved in the …
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Detecting long-term trends in water quality parameters using remote sensing techniques
… estimating three indicators of water quality: Secchi depth (SDD), chlorophyll-a concentration (Chl-a), and dissolved organic carbon (DOC). Reflectance and in situ data were collected within seven days of satellite overpass and used to build calibration models for SDD, Chl-a, and DOC in the …