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Relevant bibliographies by topics / Ecological Niche Factor Analysis / Dissertations / Theses

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Dissertations / Theses on the topic 'Ecological Niche Factor Analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 24 July 2025

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1

Williams, Alison Kay. "The influence of probability of detection when modeling species occurrence using GIS and survey data." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/11129.

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I compared the performance of habitat models created from data of differing reliability. Because the reliability is dependent on the probability of detecting the species, I experimented to estimate detectability for a salamander species. Based on these estimates, I investigated the sensitivity of habitat models to varying detectability. Models were created using a database of amphibian and reptile observations at Fort A.P. Hill, Virginia, USA. Performance was compared among modeling methods, taxa, life histories, and sample sizes. Model performance was poor for all methods and species, e

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2

Storey, Liza Preethy. "Effects of climate and land use change on invasive species a case study of Tradescantia fluminensis (Vell.) in New Zealand /." The University of Waikato, 2009. http://hdl.handle.net/10289/2634.

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Climate change, land use change and invasive species are transforming global biodiversity at multiple scales. Projections are for threats to biodiversity from these global changes to continue into the future, with varied and discernible distribution changes for many species. Concomitantly, these global changes will interact with each other to further exacerbate the problem, as exemplified in this study. In New Zealand, climate change is expected to affect landscapes, fragmented and disturbed by land use change, further increasing the potential invasibility of these landscapes for a suite of ex

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3

Whitehead, Joanna K. "Breeding success of adult female kakapo (Strigops habroptilus) on Codfish Island (Whenua Hou) : correlations with foraging home ranges and habitat selection." Lincoln University, 2007. http://hdl.handle.net/10182/640.

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Kakapo (Strigops habroptilus) are a flightless, nocturnal parrot endemic to New Zealand. Thought to be extinct within their natural range, kakapo are currently listed as nationally critical. The current population of 86 individuals is managed by the Department of Conservation’s National Kakapo Team on two offshore islands in southern New Zealand, with all females of breeding age on Codfish Island (Whenua Hou). Kakapo only breed once every two to five years, coinciding with the mast fruiting of specific plant species. On Codfish Island, the proportion of adult female kakapo that breed in ri

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4

Lefevre, Robert E., and Kevin Halverson. "Ecological Sustainability Analysis of the Coronado NF: Describing the Ecological Niche of the Forest for Water and Riparian Resources." Arizona-Nevada Academy of Science, 2007. http://hdl.handle.net/10150/296684.

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5

Kulhanek, Stefanie. "Investigating the use of invasion history, meta-analysis and niche-based models as tools for predicting the ecological impacts of introduced aquatic species." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66655.

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Biological invasions pose a major threat to global biodiversity. While there is increasing concern regarding the impacts caused by non-indigenous species (NIS), generalisable tools for predicting their ecological effects have yet to be developed. Several researchers have suggested that examining the previously documented effects of NIS, termed invasion history, can serve as a basis for forecasting future impacts. Yet, while predictive models for impact have been devel oped based on the invasion histories of several widespread invaders, the generalisability of such approaches

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6

Fromant, Aymeric. "The ecology and niche segregation of diving petrels." Thesis, La Rochelle, 2022. https://tel.archives-ouvertes.fr/tel-03959129.

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L'exploration de la niche écologique d'une espèce implique une analyse à plusieurs échelles, car différentes contraintes environnementales peuvent avoir des conséquences écologiques importantes. Cependant, l'absence d'informations précises sur l'écologie des petites espèces de procellariiformes a considérablement limité leur étude, impactant notre capacité à définir une planification de conservation appropriée. Les avancées technologiques dans la miniaturisation des enregistreurs de données permettent depuis peu de collecter des données écologiques sur ces espèces. Dans cette étude, une approc

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7

Messias, Patrícia. "Delimitação de espécies do complexo Aspidosperma pyrifolium Mart. & Zucc. (Apocynaceae)." Botucatu, 2019. http://hdl.handle.net/11449/182518.

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Orientador: Ingrid Koch<br>Resumo: Aspidosperma pyrifolium Mart. & Zucc. é uma espécie com distribuição ampla e disjunta, variação morfológica e taxonomia complexa. Neste estudo é tratada como um complexo de espécies, e utilizada como modelo para delimitação de espécies através de múltiplos critérios operacionais (genéticos, morfológicos e ecológicos). Consideramos que espécies são segmentos de linhagens de uma metapopulação evoluindo separadamente, pois este é um conceito universal que diminuiu as visões conflitantes do que é considerado espécie. Realizamos análises filogenéticas com dados co

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8

Cafaro, Costantino. "Radon prone areas in Friuli Venezia Giulia: ecological analysis and modelling." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/10887.

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2013/2014<br>La tesi descrive il lavoro effettuato e i progressi raggiunti durante i miei tre anni di dottorato, volti allo studio della distribuzione delle concentrazioni di radon in ambienti indoor, nello specifico in abitazioni private del Friuli Venezia Giulia. Il principale obiettivo è stato la definizione geografica delle cosiddette radon prone areas (RPA), ovvero le aree con le più alte probabilità di trovare concentrazioni di radon più elevate. Nonostante ciò, molte analisi supplementari sono state effettuate per migliorare la suddetta definizione e per ampliare il bagaglio di conoscen

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9

Souza, Renato Pereira de. "Filogeografia da febre amarela na América do Sul." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/6/6132/tde-19042013-141517/.

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Os Flavivírus são vírus de 40 50 nm de diâmetro, com formas esféricas e RNA de fita simples, com sentido positivo e aproximadamente 11 kb de comprimento. O Vírus da Febre Amarela, protótipo do grupo, é o agente causador da Febre Amarela, uma antiga doença que causou epidemias generalizadas na África, Américas do Norte e do Sul e Europa do século XVII ao início do século XX, e depois ressurgiu nas últimas décadas na África sub- saariana e América do Sul tropical. O presente trabalho busca a reconstrução da transmissão da Febre Amarela na América do Sul, no tempo e espaço, em especial, c

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10

Bachmann, Beatrice Yvonne [Verfasser], Martin [Akademischer Betreuer] Kappas, and Oliver [Akademischer Betreuer] Tackenberg. "Extraction and Analysis of Baseline Data for Protected Area Management Using Geographic Information Systems, Remote Sensing and Ecological Niche Modeling : Case Study: Armando Bermúdez National Park in the Cordillera Central of the Dominican Republic / Beatrice Yvonne Bachmann. Gutachter: Martin Kappas ; Oliver Tackenberg. Betreuer: Martin Kappas." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1042346542/34.

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11

Nicvert, Lisa. "Méthodes statistiques et outils logiciels pour l'analyse et l'inférence de réseaux écologiques et le traitement de données multi-espèces." Electronic Thesis or Diss., Lyon 1, 2024. http://www.theses.fr/2024LYO10130.

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Les interactions entre espèces dans les communautés écologiques sont complexes : de nombreuses espèces peuvent interagir les unes avec les autres de façons variées et à différentes échelles spatiales et temporelles. De plus, ces réseaux d'interactions sont la résultante de multiples causes, engendrent de multiples processus et ont des conséquences parfois indirectes transmises au travers de la structure du réseau. Cette complexité nécessite une diversité d'approches pour comprendre les déterminants des interactions et prédire leurs effets dans les systèmes écologiques. Cette thèse étudie plusi

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12

Inoue, Kentaro. "A Comprehensive Approach to Conservation Biology: From Population Genetics to Extinction Risk Assessment for Two Species of Freshwater Mussels." Miami University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=miami1437683696.

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13

KUMAWAT, PINKY. "Using attitudes and green consciousness as a determinant of travel behaviour and market segmentation." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2964784.

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14

Lucas, D. Pulane. "Disruptive Transformations in Health Care: Technological Innovation and the Acute Care General Hospital." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/2996.

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Advances in medical technology have altered the need for certain types of surgery to be performed in traditional inpatient hospital settings. Less invasive surgical procedures allow a growing number of medical treatments to take place on an outpatient basis. Hospitals face growing competition from ambulatory surgery centers (ASCs). The competitive threats posed by ASCs are important, given that inpatient surgery has been the cornerstone of hospital services for over a century. Additional research is needed to understand how surgical volume shifts between and within acute care general hospitals

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15

ROW, JEFFREY. "Origins of genetic variation and population structure of foxsnakes across spatial and temporal scales." Thesis, 2011. http://hdl.handle.net/1974/6271.

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Understanding the events and processes responsible for patterns of within species diversity, provides insight into major evolutionary themes like adaptation, species distributions, and ultimately speciation itself. Here, I combine ecological, genetic and spatial perspectives to evaluate the roles that both historical and contemporary factors have played in shaping the population structure and genetic variation of foxsnakes (Pantherophis gloydi). First, I determine the likely impact of habitat loss on population distribution, through radio-telemetry (32 individuals) at two locations varying in

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16

Kywe, Tin Zar. "Habitat Suitability Modeling for Tiger (Panthera tigris) in the Hukaung Valley Tiger Reserve, Northern Myanmar." Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-000D-F05C-E.

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17

Wang, Weijia. "Control of Adult Bone Marrow Erythroid Progenitor Cell Fate by Combinatorial Niche Factor Signals." Thesis, 2012. http://hdl.handle.net/1807/36300.

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Stem and progenitor cell fate (self-renewal, proliferation, survival, differentiation) is tightly controlled by niche factors and the interplay of these factors is particularly important to comprehend for the development of stem cell therapies. During erythropoiesis, erythroid progenitors at the colony forming unit-erythroid (CFU-E) stage are responsive to both stem cell factor (SCF) and erythropoietin (EPO); however, the joint action of SCF and EPO in these cells and the underlying mechanisms remain to be defined. In this study, quantitative data on the activation of signaling pathways and ge

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18

Burrill, Adrian. "Ecological niche metrics of coral reef piscivorous fishes: The effects of fishing revealed through stable isotope analyses." Thesis, 2014. http://hdl.handle.net/1828/5333.

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Coral reefs are highly complex and also highly threatened ecosystems. Population growth and the unsustainable use of coral reefs have resulted in 55% of the world’s reefs being considered degraded. Fishing, the primary ‘local’ threat on most reefs, has altered the composition of most reef communities. As a result, very few pristine coral reefs remain. Typically, coral reef research is done via underwater visual censuses, providing abundance estimates but no indication of trophic interactions, therefore we know relatively little about the structure of intact reef food webs. Understanding how hu

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19

Sixaba, Zinzisa. "Backpacker tourism: an analysis of travel motivation." 2013. http://hdl.handle.net/11394/3876.

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Magister Artium - MA<br>Backpacker tourism is a niche market of tourism that has been rapidly growing, South Africa in particular has become an increasingly popular destination for backpacker tourism (Visser 2004). Academic interest in backpacker tourism research has grown in recent years, although the current literature on backpacker tourism has focused on the economic significance and impacts with little empirical research conducted on the characteristics, motivations and behaviors. Cohen (2003) stresses that future research should stop referring to backpacking as if it were a homogeneous ph

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20

"Context-dependent niche variation and fitness consequences in California sea lions." Master's thesis, 2013. http://hdl.handle.net/2286/R.I.17887.

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abstract: Niche variation among sexes and life stages within a population has been documented in many species, yet few studies have investigated niche variation within demographic groups or across ecological contexts. We examined the extent to which pregnant California sea lions (Zalophus californianus) at each of three breeding colonies target alternative prey resources and habitats. The three colonies are distributed across distinct regions of the Gulf of California, Mexico and have divergent population dynamics. We compared the nature of niche variation among colonies and investigated the f

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21

Lee, Mei-Hsia, and 李梅霞. "Analysis Ecological Factor of Bedding Sites Selection by Formosan Sika Deer(Cervus nippon taiouanus)in Kenting National Park." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/85693406844096554876.

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碩士<br>國立臺北教育大學<br>自然科學教育學系碩士班<br>98<br>Because of population extinction of wild formosan Sike deer (Cervus nippon taiouanus) in 1969, Kenting National Park launched a Sika deer restoration program in 1984. In the year from 1994 to 1997, Sike deer was released to the field. Currently, homerange of the deer has expanded to 4000 hectares. So, we put eyes on the sphere of activities about Formosan Sika deer and investigate into line transect survey. Therefore, we carried out the research in dry and wet seasons, finding 47 sites in five months of dry seasons and 44 sites in six months of wet season

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22

Duggan, Emily Clare. "Assessing the behavioral aspects of executive functioning across the lifespan: review of rating scales and psychometric derivation of a screener for young adults." Thesis, 2014. http://hdl.handle.net/1828/5656.

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Executive functioning skills are paramount to our ability to purposefully and successfully mediate our actions within our day-to-day environment. Dysfunction of the executive system can result in a multitude of behavioral manifestations in all stages of life. Increasing evidence supports the use of rating scales to obtain a more comprehensive and ecologically valid understanding of an individual’s executive functioning. The current thesis involves two articles examining the use of behavioral rating scales in the assessment of executive functions. Study 1: In response to a recent proliferation

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23

Bachmann, Beatrice Yvonne. "Extraction and Analysis of Baseline Data for Protected Area Management Using Geographic Information Systems, Remote Sensing and Ecological Niche Modeling Case Study: Armando Bermúdez National Park in the Cordillera Central of the Dominican Republic." Doctoral thesis, 2011. http://hdl.handle.net/11858/00-1735-0000-0006-B306-4.

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24

Liu, Zishu. "Microbial community properties and mechanisms of assembly in managed ecosystems." 2019. https://ul.qucosa.de/id/qucosa%3A34719.

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Microorganisms are ubiquitously distributed on the earth and drive the fundamental element cycling in the biosphere. Their metabolic activities serve human societies in countless areas such as biotechnological engineering, food engineering, energy production, waste disposal et cetera. For human beings, and also for animals, microorganisms are imperative for health especially as colonizers of the gut system. Microbial resource management, especially when complex communities are exploited in biotechnology is a key challenge. Therefore, communities are more and more in the focus of basic research

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25

Schiller, Frank. "Diskurs und Nachhaltigkeit." Doctoral thesis, 2003. http://hdl.handle.net/11858/00-1735-0000-0006-B237-D.

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