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Dissertations / Theses on the topic 'Species displacement'

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1

Short, Kristen. "Population genetic structure and species displacement during range expansion of invasive geckos." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1289840091.

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2

DAME, ELIZABETH. "BEHAVIORAL MECHANISMS OF INVASION AND DISPLACEMENT IN PACIFIC ISLAND GECKOS." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1100810530.

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3

Reifova, Radka, Jiri Reif, Marcin Antczak, and Michael Nachman. "Ecological character displacement in the face of gene flow: Evidence from two species of nightingales." BioMed Central, 2011. http://hdl.handle.net/10150/610382.

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BACKGROUND:Ecological character displacement is a process of phenotypic differentiation of sympatric populations caused by interspecific competition. Such differentiation could facilitate speciation by enhancing reproductive isolation between incipient species, although empirical evidence for it at early stages of divergence when gene flow still occurs between the species is relatively scarce. Here we studied patterns of morphological variation in sympatric and allopatric populations of two hybridizing species of birds, the Common Nightingale (Luscinia megarhynchos) and the Thrush Nightingale
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Rowland, Lindsey Claire. "Relationship of Reproductive Timing and Climate Change to the Displacement of Peromyscus maniculatus gracilis by Peromyscus leucopus noveboracensis." Miami University / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=miami1055963515.

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5

Mateus, Pedro Miguel Veríssimo. "Ditopic molecular architectures for the recognition of anionic species." Doctoral thesis, Universidade Nova de Lisboa. Instituto de Tecnologia Química e Biológica, 2011. http://hdl.handle.net/10362/6859.

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Dissertation presented to obtain the Ph.D degree in Chemistry<br>Anions are ubiquitous and very important species in biological, medicinal, industrial and environmental processes. In biology, anions are essential for normal metabolic functions, where their specific recognition, transport and detection play a very important role. On the other hand, the uncontrolled release of anions into the environment poses a significant threat. The development of synthetic receptors capable of sequestering anions should, therefore, provide solutions to a number of problems of current interest. To be s
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6

Klayman, Benjamin Joseph. "A quantitative description at multiple scales of observation of accumulation and displacement patterns in single and dual-species biofilms." Diss., Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/klayman/KlaymanB0807.pdf.

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7

Comes, Navarro María. "Hybrid inorganic-organic materials for the optical recognition of neutral and anionic species." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/62153.

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[EN] The doctoral thesis presented under the title "Hybrid inorganic-organic materials for the optical recognition of neutral and anionic species" has had as its main objective the synthesis and characterization of organic-inorganic hybrid materials based on the combination of the principles of Supramolecular Chemistry and Materials Science. Recent studies confirm that cooperation between these two areas of Chemistry allow the simulation of what natural living beings have been doing for millions of years in a natural way. At cellular level, many vital functions are related to the ability of
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Sorribas, Mellado Juan José. "Biological control of California red scale, Aonidiella aurantii (Hemiptera: Diaspididae): spatial and temporal distribution of natural enemies, parasitism levels and climate effects." Doctoral thesis, Universitat Politècnica de València, 2012. http://hdl.handle.net/10251/14794.

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En muchas áreas citrícolas del mundo el piojo rojo de California (PRC), Aonidiella aurantii (Hemiptera: Diaspididae), está considerado una plaga clave. En el Este de España se ha extendido durante las últimas décadas hasta cubrir una amplia extensión de cítricos. El control químico es difícil y frecuentemente es seguido de infestaciones recurrentes en poco tiempo, de la aparición de resistencias a diferentes productos usados para su control y de la eliminación de enemigos naturales en el campo. La mejora del manejo integrado y las técnicas de control biológico del PRC requieren conocer la com
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Santos, Figueroa Luis Enrique. "New approaches for the development of chromo-fluorogenic sensors for chemical species of biological, industrial and environmental interest." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/43216.

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El presente proyecto de investigación está enfocado al desarrollo de sensores químicos fluoro-cromogénicos, para la detección y determinación de especies químicas de interés biológico, industrial y medioambiental de forma selectiva y con alta sensibilidad. En forma general, se busca el diseñar nuevos sistemas sensores basados en compuestos (receptores) formados por dos unidades: una unidad coordinante que interacciona con el anión a determinar y una unidad generadora de señal que alerta del reconocimiento molecular efectuado. Durante este estudio se están preparando diversas moléculas rece
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Sheikh, MD Neaz. "Seismic assessment of buildings in Hong Kong with special emphasis on displacement-based approaches." Thesis, Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B31456662.

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11

Walbert, Katrin. "Ectomycorrhizal communities associated with a Pinus radiata plantation in the North Island, New Zealand." Lincoln University, 2008. http://hdl.handle.net/10182/658.

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Aboveground and belowground ectomycorrhizal (ECM) communities associated with different age classes of the exotic plantation species Pinus radiata were investigated over the course of two years in the North Island of New Zealand. ECM species were identified with a combined approach of morphological and molecular (restriction fragment length polymorphism (RFLP) and DNA sequencing) analysis. ECM species richness and diversity of a nursery in Rotorua, and stands of different ages (1, 2, 8, 15 and 26 yrs of age at time of final assessment) in Kaingaroa Forest, were assessed above- and belowground;
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12

Gojuri, Arun. "Stability of End Notched Flexure Specimen." Thesis, Högskolan i Skövde, Institutionen för teknik och samhälle, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4487.

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This paper deals with two-dimensional Finite Element Analysis of the End Notched Flexure (ENF) specimen. The specimen is known to be unstable if the crack length is shorter than some critical crack length acr. A geometric linear two-dimensional Finite Element (FE) analysis of the ENF specimen is performed to evaluate acr for isotropic and orthotropic elastic materials, respectively. Moreover, the Mode II Energy Release Rate (ERR) JII and the compliance of the specimen are calculated. The influence of anisotropy is studied. Comparisons are made with the results from beam theory. This work is an
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13

Dickens, Jeremy Kenneth. "Taxonomy of Trogon rufus (Gmelin, 1788) and Amazonian ring-shaped clinal variation." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/38/38131/tde-15022016-164253/.

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We reviewed the taxonomy of the Trogon rufus species-complex under the premises of the Biological Species Concept. Putative taxonomic units, breaks and transition zones, were visualised by heatmaps and isophenes (phenotypic contour lines) of the colour, barring, morphometric and song characters and tested by discriminant function analyses. Colourmetric data were obtained via spectrometry and barring patterns analysed via high quality digital photographs. We found four distinct biological species. Trogon chrysochloros Pelzeln 1856 from the Atlantic Forest with its denser and blacker undertail
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14

Kerr, Geoffrey N. "The economics of managing congestion: with special reference to backcountry recreation." Lincoln University, 1992. http://hdl.handle.net/10182/1971.

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The management of congestible recreation resources has been based largely on the concept of satisfaction. This concept is poorly defined and often does not reflect objectives for management of recreation resources. One way of addressing these problems is to define and use measurable objectives for management of recreation resources. One such objective is economic efficiency. The concept of efficiency is defined and economic theory developed to identify efficient allocations of congestible resources, the efficient capacities of resources under different allocation mechanisms, and the efficiency
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15

Malmqvist, Philip. "Monitoring of crack growth and crack mouth opening displacement in compact tension specimens at high temperatures : Development and implementation of the Direct Current Potential Drop (DCPD) method." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-44493.

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The mechanical engineering department at the University of Idaho is conducting a project with the purpose of developing a complete system for investigating creep-, creep-fatigue- and fatigue properties of metallic materials at elevated temperatures up to 650 ˚C with Compact Tension (CT) specimens. Considerable efforts have been made to study and understand these phenomena, although numerous problems still exist. It is important to explore more extensively the complicated phenomena of creep, fatigue and of creep-fatigue interactions. The Direct Current Potential Drop (DCPD) method is a common m
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De, Donno Giulia. "Three dimensional strain analysis of vertebrae with artificial metastases through digital volume correlation." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/19911/.

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Bone is a common site for metastases and spine represent the most frequent site. Lytic lesions are associated with the loss of bone tissue, which can compromise the mechanical competence of the vertebra, leading to spine instability. Rigid stabilization is a solution, but it is a complex surgery, that can be very critical for oncologic patients; on the other hand, an untreated metastasis can lead to mechanical failure of the bone, leading to pain, immobilization and in the worst case, paralysis. In this study, a protocol to analyse the strain with simulated lytic metastasis under compressive
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17

Jones, Jason R. "Morphological convergence and character displacement in two species of polymorphic salamanders (genus Plethodon) in eastern Tennessee." 2009. http://trace.tennessee.edu/utk_gradthes/90.

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18

Tao, Shan-Ta, and 陶善達. "Examining the Pattern of Character Displacement of Two Sympatric Agamid Lizards in Northern Taiwan by Species Distribution Model." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/96303004999256740531.

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碩士<br>國立臺灣大學<br>生態學與演化生物學研究所<br>101<br>Character displacement hypothesis states: when species with character similarity coexist in the same community, the population in sympatric location would displace in one or more characters. The increased differences in character space would reduce the strength of inter-specific competition for limited resources. Both Japalura swinhonis and Japalura polygonata xanthostoma occur in northern Taiwan. The two congeners have similar morphology and ecology, yet different macro-habitats. I applied species distribution model to identify environmental features tha
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19

Rachalewski, Michał. "Weak and strong invaders: which biotic factors shape interactions among Ponto-Caspian invasive gammaridean species." Phd diss., 2019. http://hdl.handle.net/11089/31472.

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Rozprawa doktorska składa się z trzech opublikowanych publikacji naukowych.<br>Rozprawa doktorska dra Michała Rachalewskiego pt. „Weak and strong invaders: which biotic factors shape interactions among Ponto-Caspian invasive gammaridean species?” otrzymała nagrodę w VII edycji Konkursu „Ekologiczny magister i doktor" w kategorii ekologiczny doktor. Zwycięska praca została napisana pod kierunkiem naukowym dr hab. Karoliny Bąceli-Spychalskiej z Katedry Zoologii Bezkręgowców i Hydrobiologii UŁ. Konkurs „Ekologiczny magister i doktor” organizowany jest przez Wojewódzki Fundusz Ochrony Środowisk
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20

Almaraz, Elky. "The Interactions of Zinc Thiolate Complexes and Exogenous Metal Species: Investigations of Thiolate Bridging and Metal Exchange." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-536.

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Small molecule Zn(II) complexes containing N- and S- donor environments may serve as appropriate models for mimicking Zn protein sites, and thus, their reactions with heavy metal ions such as Pt(II) and W(0) may provide insight into possible adduct formation and zinc displacement. To study such possible interactions between zinc finger proteins and platinum-bound DNA, the ZnN2S2 dimeric complex, N,N?-bis(2- mercaptoethyl)-1,4-diazacycloheptane zinc (II), [Zn-1?]2, has been examined for Znbound thiolate reactivity in the presence of Pt(II) nitrogen ? rich compounds. The reactions yielded Zn/Pt
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21

Schuldt, Bernhard. "Effects of experimental drought on hydraulic properties and leaf traits of upper canopy and understory tree species in a perhumid tropical forest in Central Sulawesi, Indonesia." Doctoral thesis, 2010. http://hdl.handle.net/11858/00-1735-0000-0006-ADD8-8.

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22

Lee, Tai-Kuang, and 李泰廣. "Application of Endochronic Viscoplasticity with Cyclic Damage to Sn/3.5Ag/0.75Cu Solder Joint Specimens under Cyclic Proportional Displacement Path." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/62006065891178527327.

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碩士<br>國立成功大學<br>工程科學系碩博士班<br>95<br>In order to find stress-strain-damage behavior of solder ball by using solder joint specimen, this thesis defined, at first, the stiffness of material testing system, whose value could be determined from the slope of linear range of loading or unloading of the load-displacement hysteresis loop. Within this range, the solder joints behaved linear elastic with Young’s modulus and shear modulus of bulk material. As a result, the (elastic) stiffness of solder joint specimen under proportional displacement path (Φ) could be determined. Employing the series combina
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23

Pei-ShingTsai and 蔡佩杏. "Endochronic Prediction of Fatigue Initiation Life of BGA (63Sn/37Pb and Sn/3.5Ag/0.75Cu) Solder Joint Specimens under Cyclic Oblique Displacement Test." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/14015946656193686440.

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碩士<br>國立成功大學<br>工程科學系碩博士班<br>98<br>In this paper, the force -oblique displacement correction methods of the BGA solder joint specimens and the values of grip stiffness were used to correct the force-oblique displacement curves of the 63Sn/37Pb BGA specimens into the force-displacement data of their solder balls under proportional strain cyclic test. The kernel function of Endochronic cyclic viscoplasticity of 63Sn/37Pb bulk material was employed to predict the cyclic proportional stress-strain curves and then construct the relationship of the effective inelastic strain amplitude and the effe
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Chang, Jun-Wei, and 張峻偉. "Prediction Fatigue Initiation Life of 63Sn/37Pb Solder Joint Specimens under Cyclic Proportional Displacement Path Via The Endochronic Viscoplasticity with Cyclic Damage." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/69684114299140282725.

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碩士<br>國立成功大學<br>工程科學系碩博士班<br>96<br>In 2007, for the solder joint Sn/3.5Ag/0.75Cu cyclic proportional displacement path, Lee and Lee proposed the modification of solder joint specimen with stiffness of material testing system, and figured out the grip stiffiness by using series connetion concept. In 2002, Park used the same way to make the experiment with 63Sn/37Pb solder joint. In this paper, the material parameters , and were determined with Lee and Chen research on a 63Sn/37Pb bar whose area is , and the length is . Combining the material parameters and specimen parameter which were get
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Lin, Tai-tin, and 林泰廷. "Prediction of Fatigue Initiation Life of BGA (Sn/3.5Ag/0.75Cu) Solder Joint Specimens under Cyclic Proportional Displacement Path via Damage Coupled Endochronic Viscoplasticity." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/05206097374183755900.

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碩士<br>國立成功大學<br>工程科學系碩博士班<br>97<br>The purpose of this paper is to investigate the fatigue initiation life prediction of BGA (Sn/3.5Ag/0.75Cu) solder joint specimens under mixed mode cyclic proportional displacement path( ) .First, by using the BGA solder joint standoff 0.52mm to adjust the displacement-loading data of the master's thesis of Lee, T. K. in 2007. And continue with using the material parameters and kernel function of Endochronic cyclic viscoplasticity to simulate cyclic stress-strain curve under proportional displacement path. Then using the effective inelastic strain and effect
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