Dissertations / Theses on the topic 'Biosecurity science and invasive species ecology'
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Gatehouse, Hazel A. W. "Ecology of the naturalisation and geographic distribution of the non-indigenous seed plant species of New Zealand." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/1009.
Full textVincent, Scott D. "Remote Sensing of Invasive Species in Southwest Ohio." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1484262106664526.
Full textIngle, Beau Steven. "Collaborative Partnerships and Invasive Species Management: Filling the Voids in Management." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366326076.
Full textSieracki, Jennifer L. "Spatial Modeling as a Decision-making Tool for Invasive Species Management in the Great Lakes." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1408630726.
Full textPitt, Joel Peter William. "Modelling the spread of invasive species across heterogeneous landscapes." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/912.
Full textBabin, Courtney H. "Size-dependent patterns of reproductive investment in the North American invasive plant species Triadica sebifera (L.) Small (Euphorbiaceae)." ScholarWorks@UNO, 2017. http://scholarworks.uno.edu/td/2295.
Full textSwenarton, Mary. "Population Ecology of Invasive Lionfish (Pterois volitans/miles) in the South Atlantic Bight." UNF Digital Commons, 2016. http://digitalcommons.unf.edu/etd/626.
Full textMorandi, Marc Joseph. "Assessing the Influence of Different Inland Lake Management Strategies on Human-Mediated Invasive Species Spread." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1365116997.
Full textEmbke, Holly Susan. "Assessing the Spawning Potential of Grass Carp in the Sandusky River Under Varying Conditions." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1493142276727354.
Full textBowen, Anna Kate Miller. "Characterizing the Invasion of an Understory Grass Species (Oplismenus undulatifolius (Ard.) Roem. & Schult) in the Mid-Atlantic Region of the United States." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1595531995193925.
Full textMyers, Spencer Gabriel. "Effectiveness of Windrow Composting Methodology in Killing a Thermo-Tolerant Species of Salmonella During Mortality Composting." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2019.
Full textKvistad, Jake T. "Modeling Ballast Water Management Strategies for Slowing the Secondary Spread of Aquatic Invasive Species on the Laurentian Great Lakes." University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1533328303491667.
Full textPasko, Susan R. "Limnetic Zooplankton Structure and The Impact of Invasion by an Exotic Cladoceran, Daphnia lumholtzi." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1245294004.
Full textHerman, Maria G. "The Population and Behavioral Response of Woodpeckers to the Emerald Ash Borer Invasion." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1279242304.
Full textMalizia, Richard Walter. "Analyzing Niche Stability in Late Ordovician Articulated Brachiopod Species during the Richmondian Invasion." Ohio University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1305225406.
Full textAlverson, Sarah Elizabeth. "Assessing the Ecological Implications of Arbuscular Mycorrhizal Fungal Colonization of the Invasive Shrub Amur Honeysuckle (Lonicera maackii)." University of Dayton / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1366847079.
Full textWeidow, Elliot D. "Genetic Diversity in an Invasive Clonal Plant? A Historical and Contemporary Perspective." ScholarWorks@UNO, 2018. https://scholarworks.uno.edu/td/2522.
Full textKatona, Leon R. "Diversity and Function of Algal Biofilms in the Laurentian Great Lakes." Wright State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wright1622215756216238.
Full textZmijewski, Kirk A. "Connecting the dots: Remote sensing of Glossy and Common Buckthorn (Frangula alnus and Rhamnus cathartica) in the Oak Openings Region of Northwest Ohio." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1365076682.
Full textMacy, Thomas Daniel. "Current composition and structure of eastern hemlock ecosystems of northeastern Ohio and implications of hemlock woolly adelgid infestation." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1337968205.
Full textKermack, Justin P. "The Effect of Site Characteristics on the Reproductive Output of Lesser Celandine (Ranunculus ficaria)." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1493837073479695.
Full textLuo, Jing. "The role of phenotypic plasticity in the invasiveness of three Taraxacum species." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1237576621.
Full textPisarczyk, Elizabeth W. "The effect of garlic mustard (Alliaria petiolata) density on soil nutrient availability and microbial enzyme activity in Northwest Ohio : a gradient analysis /." Connect to full text in OhioLINK ETD Center, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1260236506.
Full textTypescript. "Submitted as partial fulfillment of the requirements for The Master of Science Degree in Biology (Ecology-track)." "A thesis entitled"--at head of title. Bibliography: leaves 28-32.
Fong, Denise Lynn. "Enhancing herbicide efficacy on reed canary grass (Phalaris arundinacea) by testing a plant growth hormone, application times, and herbicide type." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1368657077.
Full textFacun, Jasmine B. "Effects of Mowing Regimes on the Plants, Pollinators, and Roughness of the Channelized Hocking River’s Riparian Zone, Athens, Ohio." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1597248243432497.
Full text"Light availability and the establishment of invasive Ligustrum sinense Lour. (Chinese privet) in south Louisiana." Tulane University, 2013.
Find full text"Evaluating the Social and Ecological Drivers of Invasive Plant Species Abundance in Sub-tropical Community Forests of Nepal." Doctoral diss., 2020. http://hdl.handle.net/2286/R.I.62806.
Full textDissertation/Thesis
Doctoral Dissertation Environmental and Resource Management 2020
(9738650), Dante P. Francomano. "Soundscape dynamics in the social-ecological systems of Tierra del Fuego." Thesis, 2020.
Find full textHuman society is presently beset by an array of anthropogenic social-ecological crises that threaten the sustainability of the social-ecological systems that sustain our livelihoods. While research alone will not rectify these issues, it can help to answer key questions that must be addressed to develop effective solutions. To address such questions in a cohesive, compelling manner, social-ecological research can be bounded, structured, and distilled through innumerable organizing principles or theoretical frameworks. For this dissertation, I focused on the geographic region of Tierra del Fuego and sought to draw from the array of disciplines and methods that use sound as a lens for biological, ecological, and/or social inquiry. I also endeavored to consider various temporal, spatial, and organizational scales while investigating a selection of topics with a) specific importance in the social-ecological systems of Tierra del Fuego and b) general relevance to global social-ecological challenges. Chapter 1 provides an introduction to the dissertation, and Chapter 6 serves as a conclusion.
The objective of Chapter 2, “Biogeographical and analytical implications of temporal variability in geographically diverse soundscapes”, was to provide some guidance to passive acoustic monitoring (PAM) practitioners on how to design appropriate temporal sampling schemes based on the temporal variability of the sounds one wishes to measure and the power and storage limitations of acoustic recorders. We first quantified the temporal variability of several soundscape measurements and compared that variability across sites and times of day. We also simulated a wide range of temporal sampling schemes in order to model their representativeness relative to continuous sampling.
For Chapter 3, “Sentinels for sentinels: passive acoustic and camera trap monitoring of sensitive penguin populations”, we tested the utility of PAM to monitor behavior and abundance of Magellanic (Spheniscus magellanicus) and southern rockhopper penguins (Eudyptes chrysocome) at different spatial and temporal scales. We conducted in situ observations of the acoustic behavior of each species, and we compared acoustic metrics with penguin counts from narrowly focused camera traps and larger-extent observations of colony density.
Chapter 4, “Acoustic monitoring shows invasive beavers (Castor canadensis) increase avian diversity in Tierra del Fuego”, is focused on impacts of the invasive North American beaver (Castor canadensis) on Fuegian bird communities. We sought to determine how bird communities might differ between intact riparian forests, beaver ponds, and beaver meadows created by pond drainage. We conducted PAM and classic avian point counts under each of these conditions across seasons to test for differences between impact conditions and to compare the two methodologies.
For Chapter 5, “Human-nature connection and soundscape perception: insights from Tierra del Fuego, Argentina”, we evaluated the relationship between soundscape perception and nature relatedness by conducting surveys and soliciting responses to soundscape audio prompts. We also examined the potential for any demographic influences on nature relatedness or soundscape perception in the context of local social tensions.
(11186766), Geoffrey M. Williams. "Thousand Cankers Disease of Eastern Black Walnut: Ecological Interactions in the Holobiont of a Bark Beetle-Fungal Disease." Thesis, 2021.
Find full textEastern black walnut (Juglans nigra L.) ranks among the most highly valued timber species in the central hardwood forest and across the world. This valuable tree fills a critical role in native ecosystems as a mast bearing pioneer on mesic sites. Along with other Juglans spp. (Juglandaceae), J. nigra is threatened by thousand cankers disease (TCD), an insect-vectored disease first described in 2009. TCD is caused by the bark beetle Pityophthorus juglandis Blackman (Corthylini) and the phytopathogenic fungus Geosmithia morbida Kol. Free. Ut. & Tiss. (Bionectriaceae). Together, the P. juglandis-G. morbida complex has expanded from its historical range in southwest North America throughout the western United States (U.S.) and Europe. This range expansion has led to widespread mortality among naïve hosts J. nigra and J. regia planted outside their native distributions.
The severity of TCD was previously observed to be highest in urban and plantation environments and outside of the host native range. Therefore, the objective of this work was to provide information on biotic and abiotic environmental factors that influence the severity and impact of TCD across the native and non-native range of J. nigra and across different climatic and management regimes. This knowledge would enable a better assessment of the risk posed by TCD and a basis for developing management activities that impart resilience to natural systems. Through a series of greenhouse-, laboratory- and field-based experiments, environmental factors that affect the pathogenicity and/or survival of G. morbida in J. nigra were identified, with a focus on the microbiome, climate, and opportunistic pathogens. A number of potentially important interactions among host, vector, pathogen and the rest of the holobiont of TCD were characterized. The holobiont is defined as the whole multitrophic community of organisms—including J. nigra, microinvertebrates, fungi and bacteria—that interact with one another and with the host.
Our findings indicate that interactions among host, vector, pathogen, secondary pathogens, novel microbial communities, and novel abiotic environments modulate the severity of TCD in native, non-native, and managed and unmanaged contexts. Prevailing climatic conditions favor reproduction and spread of G. morbida in the western United States due to the effect of wood moisture content on fungal competition. The microbiome of soils, roots, and stems of trees and seedlings grown outside the host native range harbor distinct, lower-diversity communities of bacteria and fungi compared to the native range, including different communities of beneficial or pathogenic functional groups of fungi. The pathogen G. morbida was also associated with a distinct community of microbes in stems compared to G. morbida-negative trees. The soil microbiome from intensively-managed plantations facilitated positive feedback between G. morbida and a disease-promomting endophytic Fusarium solani species complex sp. in roots of J. nigra seedlings. Finally, the nematode species Bursaphelenchus juglandis associated with P. juglandis synergizes with G. morbida to cause foliar symptoms in seedlings in a shadehouse; conversely, experiments and observations indicated that the nematode species Panagrolaimus sp. and cf. Ektaphelenchus sp. could suppress WTB populations and/or TCD outbreaks.
In conclusion, the composition, function, and interactions within the P. juglandis and J. nigra holobiont play important roles in the TCD pathosystem. Managers and conservationists should be aware that novel associations outside the host native range, or in monocultures, intensive nursery production, and urban and low-humidity environments may favor progression of the disease through the effects of associated phytobiomes, nematodes, and climatic conditions on disease etiology. Trees in higher diversity, less intensively managed growing environments within their native range may be more resilient to disease. Moreover, expatriated, susceptible host species (i.e., J. nigra) growing in environments that are favorable to novel pests or pest complexes (i.e., the western U.S.) may provide connectivity between emergent forest health threats (i.e., TCD) and native host populations (i.e., J. nigra in its native range).