Global ETD Search
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Showing 1 to 4 of 4 for “"tritrophic system"”.
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Ecological consequences of genetic variation in foraging behaviors of a predatory mite
… strategies in the evolution of prey-finding in a tritrophic system. High consumption, high conversion efficiency and high dispersal response phenotypes interacted differently with prey in a spatially complex landscape. All foraging traits were comparable in terms of predator-prey densities and …
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The red imported fire ant, Solenopsis invicta, in early-successional coastal plain forests: tests of distribution and interaction strength
… species in early-successional forest gaps. In a tritrophic system, I tested whether the top-down effect of insect herbivore consumption by fire ants was strong enough to cascade through two trophic levels and improve plant growth and fitness. I compared this potential effect to that of other …
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Effects of Plant Damage, Herbivore-Associated Cues, and Learning on Foraging Behavior of a Parasitoid Wasp
… (Lepidoptera: Noctuidae) as a tritrophic model. Twenty-five cotton plants were arranged in a 5 m x 5 m array, five of which served as treatments that contained different combinations of wasp foraging cues (plant damage, host frass, and host larvae). These manipulated plants are …
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Effekte einer reduzierten Dosis von Pflanzenschutzmitteln auf tritrophische Systeme im Ackerbau
Chemische Pflanzenschutzmittel (PSM) bekämpfen nicht nur Schadorganismen, sondern haben aufgrund ihrer hohen Toxizität auch negative Auswirkungen auf Nicht-Ziel-Organismen. Die Fragestellung der Arbeit war es, ob mit reduzierten Anwendungen von PSM ihr Gefährdungspotenzial für Prädatoren von …