Thesis (M.S.)--Oregon State University, 2003. / Typescript (photocopy). Includes bibliographical references (leaves 85-92). Also available online.

Thesis (M. Sc.), Memorial University of Newfoundland, 1997. / Bibliography: leaves 53-63.

Thesis (doctoral)--Swedish University of Agricultural Sciences, 2006. / Appendix includes reproductions of papers and manuscripts co-written with other authors; abstract of one paper also in Spanish. Includes bibliographical references. Issued also electronically via World Wide Web in PDF format; online version lacks appendix of papers.

Thesis (PHD)--University of Montana, 2009. / Contents viewed on April 30, 2010. Title from author supplied metadata. Includes bibliographical references.

Thesis (Ph. D.)--Florida State University, 2004. / Advisor: Dr. Frances C. James, Florida State University, College of Arts and Science, Dept. of Biological Science. Title and description from dissertation home page (viewed June 16, 2004). Includes bibliographical references.

Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv. / Härtill 6 uppsatser.

Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2006. / Härtill 4 uppsatser.

Thesis (MS)--Montana State University--Bozeman, 2009. / Typescript. Chairperson, Graduate Committee: Jay J. Rotella. Includes bibliographical references.

Memoria para optar al Título Profesional de Ingeniero Forestal / La creciente expansión de la población urbana ha implicado en una fuerte presión de esta sobre los distintos componentes del medioambiente, especialmente del medio biótico, restringiendo y desplazando a las formas de vida que lo componen. La vegetación presente dentro de las zonas urbanas es uno de los elementos biofísicos más importantes presentes en ellas, aportando no solo con detalles estéticos, sino que también con un sinnúmero de funciones y servicios ambientales que benefician tanto al medioambiente como a la población. El presente estudio tiene como objetivo evaluar el efecto del grado de senescencia de la vegetación urbana en la presencia de la especie Veniliornis lignarius (carpinterito), especie de pájaro carpintero catalogada como la más pequeña del país. En enero del presente año (2017), se realizó un muestreo de 203 puntos aleatorios en polígonos que contenían por lo menos un 25% de cobertura vegetal en comunas urbanas y adyacentes a la Cordillera de los Andes en la Región Metropolitana, aplicando el método de los cuartos y la técnica del Playback para una caracterización de la vegetación urbana y el registro de presencias o ausencias de carpinteritos respectivamente. Con los datos se creó un índice de senescencia para cada punto de muestreo, variable que fue sometida a un proceso de regresión logística binaria junto con las generadas por el método de los cuartos (densidad, volumen, área basal y altura), evaluando cual o cuales de estas fueron significativas en la predicción de la presencia de carpinteritos dentro del área de estudio. La única variable con un efecto significativo en la presencia de carpinteritos es el grado de senescencia de la vegetación urbana, en donde a mayor senescencia mayor es la probabilidad de presencia de la especie. La muestra representada por las ausencias de carpinteritos se concentra principalmente en arboles clasificados como “maduros”, mientras que la muestra de las presencias tiende a distribuir a los individuos en las clasificaciones “maduros”, “Senescente 1” y “Senescente 2”. / The increasing expansion of the urban population has implied a strong pressure of this on the different components of the environment, especially of the biotic resource, restricting and displacing the forms of life that take part of this. The vegetation present in urban areas is one of the most important biophysical elements present in them, contributing not only with aesthetic details, but also with a number of environmental functions and services that benefit, the environment and the population equally. The objective of this research is evaluate the effect of the different senescence levels of the urban vegetation, in the presence of the species Veniliornis lignarius (carpinterito), that is the smallest woodpecker species in the country. In January of 2017, was sampled 203 random points in polygons that contain at least 25% of vegetation cover in urban areas, nearby to the Andes Mountains in the Region Metropolitana, applying the quarter method and the Playback technique, for a characterization of the urban vegetation and the record of presences or absences of carpinteritos. With the data, a senescence index was created for each sampling point, this index was subjected to a binary logistic regression process, together with those generated by the quarter method (density, volume, basal area and height), to evaluate which of these were significant in the prediction of the presence of carpinteritos. The only variable with a significant effect on the presence of carpinteritos is the senescence levels of the urban vegetation, where the greater senescence is the probability of presence of the species. The sample represented by the absence of carpinteritos is mainly concentrated in trees classified as "Mature", while the presence sample tends to distribute to individuals in the "mature", "Senescent 1" and "Senescent 2" classifications.

Agrilus planipennis, the emerald ash borer (EAB), is a destructive invasive forest pest decimating North American ash trees. Population-wide management of EAB focuses on biological control, with the introduction of four parasitic wasps; one egg parasitoid, Oobius agrili and three larval parasitoids- Spathius galinae, Spathius agrili and Tetrastichus planipennisi. This thesis examines some of the factors influencing the establishment of these larval biocontrol agents. Chapter 1 examines the relationship between woodpeckers and the parasitoids S. agrili and T. planipennisi. Both woodpeckers and these parasitoids attack the larval stage of EAB, which means their impacts overlap and potentially interact. To examine this relationship, I established parasitized larvae on ash trees and then used screening to exclude woodpeckers from some sections of the tree. Results show that while there is no evidence of discriminatory feeding for or against parasitized larvae, the presence of parasitized larvae changes woodpecker feeding behavior at a stand-level. I hypothesize that this change is due to these larval parasitoids being a low-food reward and that parasitism contributes to a change and decrease in patch quality, causing woodpeckers to quit foraging sooner than usual. My second chapter focuses on Spathius galinae, which was recently approved for release in the north central and northeastern US in 2015, to provide additional population control. Spathius galinae’s long ovipositor (4-5.3mm) is theoretically expected to help target EAB in ash with larger diameters and bark thicknesses. Using experimentally infested logs of varying thicknesses in the laboratory I tested the limits and preferences for oviposition of S. galinae, to understand its potential impact on EAB. My results demonstrated that although parasitism by S. galinae drops significantly when bark thickness reaches 8 mm, this prevents S. galinae only from reaching EAB larvae in my largest ash trees (S. galinae will play a vital role in providing additional control and in supporting ash regeneration in aftermath areas of EAB invasions.