Water hyacinth detection in Lake Victoria by means of satellite SAR
Water hyacinth (Eichhornia crassipes) is a notorious weed that can be found in large parts ofthe tropical world. It infested East African fresh water lakes in the 1980's, soon causing majorproblems on notably Lake Victoria. Mats consisting of water hyacinth blocked ports along theshoreline of the lake, the generation of hydro-electricity was hampered and the alreadydisrupted ecosystem was further affected. Acontrol program has been initialised, that requiresobjective and efficient information. The ways to get information about the exact location andthe size of the water hyacinth mats need to be improved. The application of remote sensingtechniques can realise this improvement.SYNOPTICS and FIRI have carried out a project to investigate the potentials of spaceborneSynthetic Aperture Radar to detect water hyacinth mats on Lake Victoria. ERS, Radarsat andSIR-C data were acquired to evaluate the different sensors. The evaluation showed that inparticular Radarsat data are well suited to identify and map the mats. New sensors, both inthe optical range and the microwave range, make the perspective of a monitoring programbased on remote sensing techniques even better.
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| Format: | monograph biblioteca |
| Language: | English |
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Fisheries Resources Research Institute (FIRRI)
1999-07
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| Subjects: | Fisheries, |
| Online Access: | http://hdl.handle.net/1834/33909 |
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