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 4 of 4 for “"predator impact"”.
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Release and monitoring of Laricobius nigrinus (Coleoptera: Derodontidae) for biological control of the hemlock woolly adelgid in the eastern US
… nigrinus Fender release locations, numbers of predators, and timing of release were evaluated for biological control of the hemlock woolly adelgid (HWA), Adelges tsugae Annand (Hemiptera: Adelgidae). It established at 59% of the sites and location was the most important factor related with …
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The roles of brook trout and larval two -lined salamanders as predators in streams
… the relevance of the models, I compared the predator impact for each taxon with its propensity to drift, relative (trout vs. fishless streams) propensity to drift, and trout predation rate. I found no clear patterns. However, taxa with relatively high drift rates experienced relatively high …
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Post-release evaluation of Laricobius nigrinus for the biological control of hemlock woolly adelgid in the eastern United States
Laricobius nigrinus is an insect predator introduced into the eastern United States for the biological control of hemlock woolly adelgid, Adelges tsugae. Laricobius nigrinus dispersal characteristics and predation on A. tsugae were evaluated by monitoring its immature life stages that were …
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Phenology and frugivory of large-fruited species in northern New Zealand and the impacts of introduced mammals
… to the kereru diet. Introduced mammals have impacted significantly on New Zealand forest ecosystems, including fruit production. An experiment was designed to measure the level of mammalian fruit consumption. Three paired forest patches, with similar topography, aspect and forest type, were …