Assessing Biological Control Damage of Giant Salvinia with Field Reflectance Measurements and Aerial Photography
A study was conducted on a small pond in southeast Texasto evaluate the potential for using remote sensing technologyto assess feeding damage on giant salvinia (Salvinia molestaMitchell) by the salvinia weevil (Cyrtobagous salviniaeCalderand Sands). Field spectral measurements showed that moderatelydamaged and severely damaged plants had lower visibleand near-infrared reflectance values than healthy plants.Healthy, moderately damaged, and severely damaged giantsalvinia plants could be differentiated in an aerial color-infraredphotograph of the study site. Computer analysis of thephotograph showed that the three damage level classescould be quantified. (PDF has 5 pages.)
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| Main Authors: | , , , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
2005
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| Subjects: | Management, Biology, Limnology, light reflectance, color-infrared photography, Salvinia molesta, Cyrtobagous salviniae, biocontrol, lakes, Texas, Bridge City, |
| Online Access: | http://hdl.handle.net/1834/19474 |
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