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 8 of 8 for “"UV reflectance"”.
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Prothonotary Warbler (Protonotaria citrea) Plumage as an Indicator for Infection: the Relationship between Haemosporidia Infection and Breast Feather Reflectance in a Neotropical Migrant Passerine
… and status. This study describes breast feather reflectance of adult Prothonotary Warblers (Protonotaria citrea) (n=169), insectivorous Neotropical migrant passerines, throughout the Ultraviolet (UV) and human visible light spectra and examines the relationship between Haemosporidia (pathogen …
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Factors Associated with Pollinator Foraging and Floral Morphology of Lawn Weeds
… treatments on floral morphology and ultraviolet (UV) reflectance of bulbous buttercup (Ranunculus bulbosus L.), dandelion (Taraxacum officinale G. H. Weber ex Wiggers), foxglove beardtongue (Penstemon digitalis Nutt. ex Sims), white clover (Trifolium repens L.), and associated pollinator foraging. …
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Ultraviolet reflectance of nestling plumage and the provisioning strategies of adult Eastern Phoebes (Sayornis phoebe)
… songbirds are visually sensitive to ultraviolet (UV) wavelengths and, in some species, variation in the extent to which plumage reflects in the UV range provides information about individual quality that influences mate-choice decisions. Less is known about the possible importance of plumage UV …
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Low temperature epitaxial silicon growth using electron cyclotron resonance plasma deposition
… using SEM, TEM, Raman spectroscopy, UV reflectance, spreading resistance profiles, Hall mobility measurements, and both four-point probe and van der Pauw resistivity measurements.</p>
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Female Ornamentation in the American Robin
… of male and female robins in the field using reflectance spectrometry. Female bill, breast and crown traits reliably predicted age, crown and bill colour traits were related to better body condition, and bill colour decreased seasonally as well as with ectoparasite load. I found evidence of …
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Assessment of anthropocentric representations of color patterns for biological relevance
… of coloration. Specifically, we used the reflectance spectra of the field guides and the RGB values from digital photography of birds as our anthropocentric representations of coloration. Images from field guides are potentially haunted by human bias as the bird coloration is (a) perceived …
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Effects of systemic fungicides on floral attributes, pollination and fruit aroma in strawberries
… cues. This could be tested, by analysing the UV reflectance of treated plants and by pollinator choice tests, with floral extracts of the treated flowers (see discussion in **Chapter V**). Moreover, taste tests should be carried out to further assess the fungicide effects on the strawberry …
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Introgression of genes from rape to wild turnip
… was nearly twice that for bee pollination. Light reflectance patterns under UV light revealed a marked difference between wild turnip and rape flowers compared to near identical appearance under visible light. The data indicates that bees are able to distinguish between rape and wild turnip …