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Dissertations / Theses on the topic 'Population changes'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Rostö, Evelina. "Changes in alpine plant population sizes in response to climate change." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-418248.

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Alpine plants are assumed to be in particular danger as the climate changes rapidly worldwide. Specialist alpine species in Norrbotten County, northern Sweden have been surveyed over the last 20 years, providing insight to population dynamics and how the plants might respond to the changing climate. The main current threat to the species is habitat destruction as the climate changes. Variation in the number of plants among populations and years, and correlations with environmental variables were examined. Some species had increased while others had decreased over the years. No uniform relation

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2

Giles, Lynne Catherine. "Changes in activity limitations in an older population /." Title page, table of contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09MPM/09mpmg472.pdf.

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3

Stokes, T. K. "Long term changes in a laboratory insect population." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371358.

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4

Ross, Beth E. "Assessing Changes in Waterfowl Population and Community Dynamics." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/2174.

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Studying long-term ecological studies allows for a better understanding of processes driving populations and communities, and this understanding can be used to improve conservation eorts. These studies can describe how changes in the environment have led to current states of populations and communities, and indicate if the current state or trend falls within expectations based on past dynamics. Studies of long-term datasets also help ecologists predict how populations may shift with climate, water, or land-use change and determine necessary management action to maintain sustainable populations

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5

Pappas, Nikos. "The macroeconomic impacts of projected population changes in Greece." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=18976.

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The aim of my thesis is to explore the macroeconomic impacts of the projected demographic changes in Greece. Population of Greece is projected to age in the course of the next three decades. The thesis combines demographic projections with a multi-period economic Computable General Equilibrium (CGE) modelling framework to assess the macroeconomic impact of these future demographic trends. The size and age composition of the population in the future depends on current and future values of demographic parameters such as the fertility, mortality rates and the level of annual net migration. I use

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6

Dahlan, Ahmed Said Mohammed. "Population characteristics and settlement changes in the Gaza Strip." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/1172/.

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7

Vernooij, M. W. "Imaging of age-related brain changes a population-based approach /." [S.l.] : Rotterdam : [The Author] ; Erasmus University [Host], 2009. http://hdl.handle.net/1765/15054.

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8

Rezk, Ayham. "Population changes and labour market accounts in Syria, 1994-2004." Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/4136.

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Population growth in Syria 1994-2004 varied regionally, as did economic growth, and it was at the regional scale of Syrian labour market where the effects of these changes were seen. The contribution of this thesis is to empirically examine how the processes in the regional labour markets were influenced by demographic changes and varying economic opportunities. It examines these variations and determines how the regions responded to imbalances of growth in labour supply and demand. The methodology of labour market accounts distinguishes the role of demographic and economic components in each

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9

Drøyvold, Wenche Brenne. "Epidemiological studies on weight change and health in a large population." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Medicine, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1461.

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10

Leary, Paul Niell. "The Late Cenomanian anoxic event : implications for foraminiferal evolution." Thesis, University of Plymouth, 1987. http://hdl.handle.net/10026.1/2057.

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This study lnvestigates the effect of the late Cenomanian Oceanic Anoxic Event (OAE) on the planktonic and benthonic foraminifera. On the former, the OAE was the cause of major extinctions within the population, the return to pre-OAE oxygen levels permitting recolonization of the vacated niches. On the latter, the OAE caused extinctions but resulted in a low oxygen tolerant fauna which slowly evolved into the vacated niches on the post-oAE recovery of oxygen levels. The changes in the foraminiferal populations have been integrated With changes in other marine organisms through the late Cenoman

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11

Lai, Wai-hung. "Population changes and the production and trade pattern in Hong Kong." Click to view the E-thesis via HKUTO, 1987. http://sunzi.lib.hku.hk/hkuto/record/B31975100.

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12

Lai, Wai-hung, and 黎偉雄. "Population changes and the production and trade pattern in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1987. http://hub.hku.hk/bib/B31975100.

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13

Keeratipongpaiboon, Thuttai. "Population ageing : changes in household composition and economic behaviour in Thailand." Thesis, SOAS, University of London, 2012. http://eprints.soas.ac.uk/14570/.

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14

Thompson, I. P. "Bacterial population changes during decay of basidiomycetes : a numerical taxonomic study." Thesis, University of Essex, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370495.

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15

Dewey, Jennifer K. "Evaluating Entheseal Changes from a Commingled and Fragmentary Population| Republic Groves." Thesis, Florida Atlantic University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10789480.

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<p> The most direct way available to modern day researchers to reconstruct individual and population level behavior is to analyze markers of activity from skeletal remains (Ruff et al., 2004). An analysis of the population at the Republic Groves site (8HR4) was conducted, using the entheseal change score system, the Coimbra method, developed by Henderson et al. (2015). This study examined the implication of analyzing a commingled and fragmentary population with this methodology. Reconstructing specific behavior cannot be done with this type of approach; however, entheseal changes can be compar

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16

Garnett, Anne Margaret, and n/a. "EMPLOYMENT AND POPULATION ADJUSTMENT IN RURAL AUSTRALIA." University of Canberra. School of Business & Government, 2007. http://erl.canberra.edu.au./public/adt-AUC20070802.130527.

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Rural regions in Australia have been, and continue to be, distinguished by very different population and labour market characteristics than those of more urbanised areas. Since the 1980s, rural regions have been exposed to a range of economic events and policies which has impacted on the structure and composition of the population and the labour force. These changes include trade liberalisation and globalisation, deregulation, declining numbers of agricultural establishments, advances in technology, increases in productivity and changes in the levels of public and private provision of goods an

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17

Bullock, Michael Ross. "The impact of changes in social housing provision on migration propensities." Thesis, Lancaster University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360616.

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18

Lee, Fung. "Climatic change and Chinese population growth dynamics over the last millennium." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39558599.

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19

Anderson, Kathie Ann Ryckman. "From the population bomb to the birth dearth : the stages of acceptance of public opinion about changes in population." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2002. http://wwwlib.umi.com/cr/utexas/fullcit?p3077403.

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20

Duncan, John A. "Aloe Pillansii on Cornell's Kop : are population changes a result of intrinsic life history patterns or climate change?" Bachelor's thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/25928.

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Aloe pillansii populations in the biodiversity hotspot of the Succulent Karoo in Southern Africa are thought to be under threat of extinction. This study investigated the population at the type locality; Cornell's Kop in the Richtersveld, South Africa. It has been suggested that theft, animal damage and more recently climate change have caused a decline in the population by over 50% in the last decade, however very little is known about this rare species. Repeat photography and surveys were used to analyse life history patterns and dynamics of the population and thus establish what the potenti

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21

Persson, Sofie. "Prevalence of Cataract changes in a Guatemala population evaluated by direct ophthalmoscopy." Thesis, Linnéuniversitetet, Institutionen för medicin och optometri (MEO), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-26786.

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Purpose: To grade cataract changes in a Guatemala population with direct ophthalmoscopy and a grading system based on the grading system used by V. Mehra and D. C. Minassian in 1988. Methods: A population from Guatemala who attended field clinics conducted by Vision For All were included in this study. The sample consisted of 352 participants, 219 women and 133 men, from 9-90 years old. Mean age of the participants was 47.9 ± 17.8 years old. Binocular VA and subjective refraction was obtained with trial lenses and a Snellen E-chart at 5 meters. A 2 mm pinhole was used monocularly with the subj

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22

Shi, Niu 1963. "Demographic changes and genetic variation of an alfalfa (Medicago sativa L.) population." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/277907.

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The objectives of this study were to describe demographic change in an alfalfa population and determine whether genetic changes were associated with stand loss in an alfalfa field during the year of establishment. A nondormant composite population (AZ-88NDC) was sown at 1944 seeds per square meter in Oct. 1988 at Tucson, AZ. Only 29% of the seeds sown germinated and emerged. Survivorship curve of the emerged seedling population had some characteristics of Deevey type III. Two heavy mortality periods were observed. Low temperatures might be the major cause of the first heavy stand loss. The sec

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23

Theunert, Christoph. "Approaches For Inferring Past Population Size Changes From Genome-wide Genetic Data." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-150660.

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The history of populations or species is of fundamental importance in a variety of areas. Gaining details about demographic, cultural, climatic or political aspects of the past may provide insights that improve the understanding of how populations have evolved over time and how they may evolve in future. Different types of resources can be informative about different periods of time. One especially important resource is genetic data, either from a single individual or a group of organisms. Environmental conditions and circumstances can directly affect the existence and success of a group of

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24

Nisa, Georgette. "The prevalenceof anterior segment and crystalline lens changes in a Nicaraguan population." Thesis, Linnéuniversitetet, Institutionen för medicin och optometri (MEO), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-54213.

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Abstract Aim: The purpose of this study was to find the prevalence of different ocular changes in the anterior segment of the eye and changes in the crystalline lens among Nicaraguan population. Method: The study was done during a journey to Nicaragua with the organization VFA and Synoptik that lasted for two weeks in March/April. There were a total of 134 participants with 71 females and 63 males. The average age of the study participants was 50 (±20) years and the age ranged from 7 to 97 years. The total sample size was collected in the three towns that we visited during the journey: Ticuant

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25

Forest, Marie. "Simultaneous estimation of population size changes and splits times using importance sampling." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:8c067a3d-44d5-468a-beb5-34c5830998c4.

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The genome is a treasure trove of information about the history of an individual, his population, and his species. For as long as genomic data have been available, methods have been developed to retrieve this information and learn about population history. Over the last decade, large international genomic projects (e.g. the HapMap Project and the 1000 Genomes Project) have offered access to high quality data collected from thousands of individuals from a vast number of populations. Freely available to all, these databases offer the possibility to develop new methods to uncover the history of t

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26

Bradford, Jessica. "Examining Culex tarsalis (Diptera: Culicidae) population changes with satellite vegetation index data." Kansas State University, 2014. http://hdl.handle.net/2097/17139.

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Master of Public Health<br>Department of Diagnostic Medicine/Pathobiology<br>Michael W. Sanderson<br>A zoonotic disease is any disease or infection that is naturally transmissible from vertebrate animals to humans. Over 200 zoonoses have been described (Zoonoses and the Human-Animal-Ecosystems Interface, 2013). Many zoonotic viruses are arboviruses, viruses transmitted by an infected, blood-sucking, arthropod vector (Hunt, 2010). There are several endemic arboviruses in the United States; some foreign arboviruses, such as Rift Valley fever (RVF) virus, are potential bioterrorism agents (Dar

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27

Englama, Abwaku. "Determinants of fertility in less developed countries : a case study of Nigeria." Thesis, University of Essex, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.258565.

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28

Wennersten, Lena. "Population-level consequences of variation." Doctoral thesis, Linnéuniversitetet, Institutionen för naturvetenskap, NV, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-32522.

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Consequences of within population variation have recently attracted an increased interest in evolutionary ecology research. Theoretical models suggest important population-level consequences, but many of these predictions still remain to be tested. These issues are important for a deepened understanding of population performances and persistence, especially in a world characterized by rapid fragmentation of natural habitats and other environmental changes. I review theoretical models of consequences from intra population genetic and phenotypic variation. I find that more variable populations a

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29

Rivers, Nicola Mary. "Seasonal changes in population structure and behaviour of the Natterer's bat (Myotis nattereri)." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418776.

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30

Stanley, Zachary. "RELATIVE COMPETITIVE ABILITIES, INTERSEXUAL OVERYIELDING, AND POPULATION SEX RATIO CHANGES IN A BRYOPHYTE." UKnowledge, 2019. https://uknowledge.uky.edu/biology_etds/60.

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Unequal sex ratios are widespread in dioecious plants and understanding their cause is important to understanding fundamental aspects of their population dynamics, and yet what causes biased sex ratios in plants is still poorly understood. Competition experiments have been used in plants to predict the outcome of species interactions, but they have rarely been used to help explain sex ratio bias. This study used a response surface competition design to measure the relative competitive abilities of the sexes of the bryophyte Marchantia inflexa (a thallus liverwort of Marchantiaceae) to predict

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31

Noble, Samanthia Jean. "STORM INDUCED CHANGES IN TURBIDITY, CHLOROPHYLL, AND BRACHIONUS POPULATION DYNAMICS IN ACTON LAKE." Miami University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=miami1105465428.

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32

Nyman, Robert H. "A study of changes in algal population density diversity and distribution and changes in physical and chemical characteristics of Lake Elsinore." CSUSB ScholarWorks, 1986. https://scholarworks.lib.csusb.edu/etd-project/372.

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33

McLeman, Robert Andrew. "A management strategy for potential human population movements as a result of climate change." Thesis, Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14040190.

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34

Van, Beveren Elisabeth. "Population changes in small pelagic fish of the Gulf of Lions : a bottom-up control?" Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS040/document.

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La compréhension et la gestion des écosystèmes requièrent un maximum de connaissances sur les dynamiques de populations. Depuis 2007, la taille de la sardine (Sardina pilchardus) et de l’anchois (Engraulis encrasicolus) dans le Golfe du Lion a chuté tandis qu’au même moment, la population de sprat, qui a une faible valeur commerciale, a fortement augmenté. Les très forts enjeux économiques autour de ces espèces ont conduit au projet de recherche « EcoPelGol » dans lequel se situe cette étude portant sur les changements observés. La condition corporelle, la croissance ainsi que la structure en

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35

Guldager, Nikolina. "Effects of an Increasing Harbor Seal Population on Changes in Sites Used for Pupping." Fogler Library, University of Maine, 2001. http://www.library.umaine.edu/theses/pdf/GuldagerN2001.pdf.

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36

McCall, Barbara. "NONINVASIVE GENETIC SAMPLING REVELAS BLACK BEAR POPULATION DYNAMICS DRIVEN BY CHANGES IN FOOD PRODUCTIVITY." The University of Montana, 2009. http://etd.lib.umt.edu/theses/available/etd-06112009-182902/.

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I conducted research on the demography of a harvested north Idaho black bear (Ursus americanus) population to determine the underlying dynamics of changes in population abundance, to determine how much these dynamics were driven by variation in food productivity, and to evaluate how these processes could influence inferences based on mark-recapture analysis. In cooperation with Idaho Department of Fish and Game and the USDA Forest Service, I used barb-wire corrals to collect black bear DNA during 2003-2006 in the Purcell Mountains of Idaho. We analyzed these DNA samples to determine the number

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37

Ward, Sarah. "Are changes in the lesser flamingo population a natural consequence of soda lake dynamics?" Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/378653/.

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38

McElhone, Patrick Michael. "Cerulean warbler population and habitat changes along Breeding Bird Survey routes in the central Appalachians." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10263.

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Thesis (M.S.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains viii, 73 p. : ill. (some col.), maps. Includes abstract. Includes bibliographical references.

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39

Lee, Fung, and 李峰. "Climatic change and Chinese population growth dynamics over the last millennium." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39558599.

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40

Swing, Rachel. "Score Changes from the WISC-R to the WISC-III in Disabled Population in Kentucky." TopSCHOLAR®, 1996. http://digitalcommons.wku.edu/theses/823.

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This study was conducted to examine the extent of score changes from the Wechsler Intelligence Scale for Children-Revised (WISC-R) to the Wechsler Intelligence Scale for Children-Third Edition (WISC-III) when administered to Learning Disabled and Mild Mental Disabled populations. Specifically, this study examined whether there are differences, or, differential score changes between these populations from one test version to the next. Score changes were obtained from 7 school districts in Western Kentucky. Recorded were scores from the WISC-R and WISC-III administrations in the areas of Verbal,

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41

Cherry, Bradley Alan. "Adrenal Zona Reticularis Changes Associated with Pubertal Transition in Control Versus Population-Inhibited Prairie Deermice." W&M ScholarWorks, 1995. https://scholarworks.wm.edu/etd/1539625963.

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42

Rook, Megan Ann. "Mortality of Diamondback Terrapins in Blue Crab Traps: Population Changes and Conservation in Southeastern Virginia." W&M ScholarWorks, 2009. https://scholarworks.wm.edu/etd/1539626881.

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43

Klopf, Ryan. "Community and ecosystem changes in tallgrass prairie restorations: the effects of population source and diversity." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/dissertations/684.

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The overall objective of this study was to quantify the effects of dominant grass propagule source (i.e., cultivar vs. non-cultivar) and seeded diversity of propagules on community structure and ecosystem function during prairie restoration. Two field experiments, and two chronosequences were used to investigate this main objective. The two field experiments were established at the same latitude separated by 620 km (corresponding to a precipitation gradient from eastern Kansas to western Illinois), and consisted of a split plot design, with dominant grass source as the whole-plot factor (2 l

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44

Saraux, Claire. "Response of penguins to environmental changes across the Southern ocean : from individuals to population trends." Strasbourg, 2011. http://www.theses.fr/2011STRA6192.

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Le changement climatique, dorénavant sans équivoque, devrait se poursuivre voire s’amplifier dans les siècles à venir, affectant profondément la composante biologique de notre planète. Il est donc nécessaire et urgent de mieux comprendre les écosystèmes et leurs réponses face au changement climatique. Au cours de cette thèse, j’ai étudié l’effet du climat dans l’Océan Austral au travers des manchots. Ceux-ci sont souvent considérés comme de bons indicateurs de leurs écosystèmes de part leur position au sommet de la chaîne trophique. Ce travail repose sur des données pluriannuelles collectées s

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45

Meyers, Paul M. "Assessing Mourning Dove Population Declines: Changes in Nesting Dynamics and the Role of Perch Sites." DigitalCommons@USU, 1994. https://digitalcommons.usu.edu/etd/6499.

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I replicated a nesting study carried out 40 years ago in southern Utah to assess reasons for long-term population declines of mourning doves (Zenaida macroura) in the western United States. I compared current nesting patterns to similar data collected in 1952. I saw little difference in nest success and nest predation, but reproductive output and nest density decreased dramatically. The number of young fledged per pair of adults was only 64% of that estimated in 1952. A 1-2 week delay in the nesting season contributed to this decrease, but cannot explain it entirely. Nest density was about 20%

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46

Bacigalupe, Rodrigo. "Population genomic analysis of bacterial pathogen niche adaptation." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31266.

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Globally disseminated bacterial pathogens frequently cause epidemics that are of major importance in public health. Of particular significance is the capacity for some of these bacteria to switch into a new environment leading to the emergence of pathogenic clones. Understanding the evolution and epidemiology of such pathogens is essential for designing rational ways for prevention, diagnosis and treatment of the diseases they cause. Whole-genome sequencing of multiple isolates facilitating comparative genomics and phylogenomic analyses provides high-resolution insights, which are revolutioniz

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47

Tringali, Michael D. "Genetic changes in natural populations caused by the release of cultured fishes." [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000153.

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48

Tringali, Michael Dominic. "Genetic Changes in Natural Populations Caused by the Release of Cultured Fishes." Scholar Commons, 2003. https://scholarcommons.usf.edu/etd/1495.

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Genetic changes likely occur in wild fish populations as a consequence of interactions with cultured fish, but to what extent do those changes threaten the maintenance of natural genetic diversity and population viability? Following a review and categorization of numerous processes suspected of being agents of post-release genetic change in recipient wild populations (Chapter 1), I focus on risks relating to the magnitude and duration of releases -- but with a twist. That is, I assume that the mean fitness of released, cultured individuals does not differ from that of the recipient natural pop

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49

Shaw, Chester Worth Jr. "Human responses to past climate, environment, and population in two Mogollon areas of New Mexico." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186167.

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Climate-sensitive tree ring chronologies and modern climate data are used to produce prehistoric estimates of summer drought for the Mimbres and Pinelawn-Reserve areas in New Mexico. The nature of these estimates are evaluated using tenets of the Anasazi behavioral model. It is concluded that many of the behavioral processes associated with prehistoric populations on the southern Colorado Plateaus can be seen operating within the two Mogollon areas selected for study. As they have on the plateaus, processes in past human behavior can be linked to three factors: prehistoric efforts to intensify

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50

Maciulevičienė, Edita. "Changes in the position of Kaunas city middle-aged population regarding their leisure time physical activity." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130522_082355-83549.

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In European countries, people, whatever the socio-economic group or nationality they belong to, men or women, the young or the elderly without distinction, should be guaranteed the right to health as well as its promotion and support measures (Javtokas, 2009). Personal health promotion reflects the general idea stating that in order to enhance health it is necessary to change the way of life (Tones, Tilford, 1994; Donev et al., 2007). In this era of radical modernity related to the increased personal anxiety and uncertainty, there appear new alternative ways to enhance a person’s health: takin

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