Global ETD Search
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Showing 1 to 5 of 5 for “"Indirect defense"”.
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The Function of Insect Trapping by Penstemon Digitalis and Cirsium Discolor
… in some cases they have been shown to provide defense against herbivores. In most plants, however, the function of such insect-trapping is not known. In two herbaceous plants native to central Illinois, Penstemon digitalis Nutt. (Scrophulariaceae) and Cirsium discolor (Muhl) Spreng …
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The Direct and Indirect Effects of Insectivory by Birds in Two Neotropical Forests
… lowland tropical forests, I tested whether birds indirectly defend canopy and understory plant foliage from arthropod herbivores. The two forest sites differed in age, tree species diversity and rainfall seasonality. Birds significantly reduced local arthropod densities in the canopy of a …
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Specificity in the ecology and evolution of plant defense against herbivores: Identity and history
… may in turn evolve allocation away from costly defense towards competitive ability. This assumes that plants face a fundamental tradeoff between growth and defense, but we predict that this tradeoff depends on the biotic environment and specificity of plant responses to herbivores. I examined …
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Epistemic Overload as Epistemic Injustice
… to ‘proper’ epistemology, thereby providing an indirect defense of the study of epistemic injustice. Second, theoretical development occurs in are Chapters 3, 4, 5, 6. Chapter 3 initiates the argument for epistemic overload, while Chapter 4 extends the case for epistemic overload, identifying …
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Investigating Damage, Genetic Correlations, and Natural Selection to Understand Multiple Plant Defenses in Passiflora incarnata
… commonly produce multiple, seemingly redundant defenses, but the reasons for this are poorly understood. The specificity of defenses to particular herbivores could drive investment in multiple defenses. Alternatively, genetic correlations between defenses could lead to their joint expression, …