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Rozprawy doktorskie na temat „Populations marginales”

Autor: Grafiati

Data publikacji: 7 grudnia 2024

Data aktualizacji: 31 lipca 2025

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1

Vary, Morgane. "Intégration sociale des populations marginales sur le littoral breton au XVIIIe siècle." Lorient, 2007. http://www.theses.fr/2007LORIL103.

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L’encadrement de la population, une des principales obsessions de l’Etat sous l’Ancien Régime, a nécessité la constitution d’un maillage juridictionnel complexe et dense du territoire. Le littoral breton au XVIIIe siècle apparaît comme un bon observatoire des rapports entre les habitants de cet espace et les représentants de l’ordre. Ce territoire offre de multiples opportunités aux populations locales et aux migrants. Il devient un espace particulièrement attractif qu’il est nécessaire de contrôler. Le maillage juridictionnel permet de capter une population qualifiée de marginale. Des formes

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Penven, Alain. "Intégration et ségrégation des populations pauvres ou marginales : l'exemple des politiques rennaises pour l'habitat." Rennes 2, 1996. http://www.theses.fr/1996REN20012.

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Fruit de recherches en géographie urbaine et sociale, cette thèse propose une analyse des phénomènes de précarité et de leur traitement dans le cadre de ce que l'on appelle communément les politiques de la ville et du développement social urbain. L'échelle retenue est l'agglomération rennaise, terrain d'expérimentation particulièrement riche en la matière et dont les résultats sont bien souvent reconnus et salués. L'auteur mobilise une approche multi-référentielle et multi-dimensionnelle en proposant différents niveaux d'analyse ce qui le conduit a formaliser des processus modélisables constru

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Housset, Johann. "Variations de croissance et capacité d’adaptation des populations marginales fragmentées d’arbres des zones boréo-montagnardes, en réponse aux changements climatiques." Thesis, Paris, EPHE, 2015. http://www.theses.fr/2015EPHE3041/document.

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Cette thèse a pour objectif de déterminer le devenir des populations marginales d’arbres boréo-montagnards dans le contexte des changements climatiques. La réponse dendroclimatique et la structure génétique des espèces sont analysées conjointement sur des gradients incluant les zones de distributions continues et marginales. Les deux modèles biologiques choisis sont le thuya occidental en limite nordique (forêt boréale canadienne) et le pin cembro en limite occidentale (Alpes). Les hypothèses suivantes ont été testées : le réchauffement climatique au cours du XXe siècle a entrainé une augmenta

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Theraroz, Adélaïde. "Ressources génétiques du pin maritime : variabilité géographique, pressions de sélection et adaptation future." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0245.

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Le changement climatique affecte déjà les écosystèmes forestiers sur tous les continents, comme en témoignent la migration des espèces vers le nord et vers les plus hautes altitudes et l'augmentation du dépérissement des forêts en réponse, non seulement à des conditions climatiques plus rigoureuses, mais aussi à des épidémies de ravageurs et de maladies résultant d'événements climatiques sans précédent ainsi que de l'intensification des activités humaines. Ces phénomènes ont des conséquences négatives sur le fonctionnement des écosystèmes forestiers et la persistance des espèces et des populat

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Gory, Jeffrey J. "Marginally Interpretable Generalized Linear Mixed Models." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1497966698387606.

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Sellers, Brian Gregory. "Zero Tolerance for Marginal Populations: Examining Neoliberal Social Controls in American Schools." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4768.

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This study's purpose is to investigate the expansion of social control efforts in American elementary and secondary school settings, particularly the use of zero-tolerance policies. These policies entail automatic punishments, such as suspensions, expulsions, and referrals to the juvenile and criminal justice systems for a host of school-based infractions. The widespread implementation of zero-tolerance policies and the application of harsh, exclusionary sanctions have intensified over the past decade. Numerous studies have documented this rise; however, there has been little effort to explore

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7

Nichter, Ashlee N. "Population dynamics of hybrid ecosystems: Implications for marginal ecosystem conservation and management." Bowling Green State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1510839367571419.

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Alford, Lucy. "The thermal macrophysiology of core and marginal populations of the aphid Myzus persicae in Europe." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/1201/.

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Insects are ectotherms and have limited ability to regulate body temperature above or below ambient and are consequently greatly affected by temperature. The aphid \(Myzus\) \(persicae\) has an extensive distribution throughout Europe from Scandinavia to Southern Spain, representing three distinct climatic regions: sub-Arctic, temperate and Mediterranean. The aphid also has genetically distinct clones within its holocyclic (sexual) and anholocyclic (asexual) life cycles. This raises the possibility that aphids are regionally-adapted to distinct climatic zones along the latitudinal cline of its

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9

CHAKAR, ABDELLATIF. "Etat nutritionnel, retard de croissance marginal et carences specifiques dans une population d'enfants parisiens." Paris 7, 1992. http://www.theses.fr/1992PA077036.

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L'evaluation anthropometrique (poids, taille) d'un echantillon de 1137 enfants francais et immigres ages de six ans et frequentant cinq centres de pmi situes a paris montre que les retards staturaux sont plus frequents que les retards ponderaux. Ces retards sont de types marginaux et ont les prevalences les plus elevees chez les asiatiques du sud-est, les europeens non francais et les francais. Nous avons etudie les relations entre ces retards marginaux de croissance et certains parametres biochimiques. Les resultats montrent que les retards marginaux de poids chez ces enfants s'accompagnent d

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10

Castignetti, Paul. "Population dynamics and facies association of recent foraminifera from a nearshore marginal marine environment, Plymouth Sound." Thesis, University of Plymouth, 1997. http://hdl.handle.net/10026.1/2050.

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Plymouth Sound is an area of shallow marine to marginal marine sea approximately 10km² in size. It is situated on the South coast of England and partially restricted from the open ocean by the Breakwater. Its shallow marine waters are diluted by the outflow from two significant rivers; the Tamar and the Plym. All of these factors combined with the partial restriction of the Breakwater and open channels adjacent the Breakwater have created many different sub-environments within this small region. Very low energy to very high energy conditions are present, which range from normal marine, slightl

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11

Vaghri, Ziba. "Population patterns of hair zinc, dietary and socio-demographic determinants." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/924.

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Marginal zinc deficiency (MZD) exists in children of industrialized societies and can impair growth and development. Presently there are no data available on its global prevalence. It is believed that MZD is one of the most common hidden deficiencies throughout the world. This is partly because of the lack of sensitivity and specificity of serum zinc, the most commonly used biomarker of zinc status, to detect MZD. This deficiency in children is always accompanied by a decrease in hair zinc. Although in research settings hair zinc is a recognized biomarker of MZD in children, health practitione

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12

Santos, Luan Alberto Odorizzi dos [UNESP]. "Contribution of marginal non-crop vegetation and semi-natural habitats to the regulation of insect pest populations by their natural enemies." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/150943.

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Submitted by LUAN ALBERTO ODORIZZI DOS SANTOS null (luanodorizzi1@hotmail.com) on 2017-06-21T02:16:39Z No. of bitstreams: 1 TESE_LUAN_ALBERTO_ODORIZZI_DOS_SANTOS.pdf: 1320242 bytes, checksum: f90ac4fa9e096f32cb4444a87944e21f (MD5)<br>Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-06-21T14:31:07Z (GMT) No. of bitstreams: 1 santos_lao_dr_jabo.pdf: 1320242 bytes, checksum: f90ac4fa9e096f32cb4444a87944e21f (MD5)<br>Made available in DSpace on 2017-06-21T14:31:07Z (GMT). No. of bitstreams: 1 santos_lao_dr_jabo.pdf: 1320242 bytes, checksum: f90ac4fa9e096f32cb4444

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Santos, Luan Alberto Odorizzi dos. "Contribution of marginal non-crop vegetation and semi-natural habitats to the regulation of insect pest populations by their natural enemies /." Jaboticabal, 2017. http://hdl.handle.net/11449/150943.

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Orientador: Odair Aparecido Fernandes<br>Coorientador: Armin Bischoff<br>Banca: Pierre Franck<br>Banca: Daniel Junior de Andrade<br>Banca: Olivier Blight<br>Banca: Raphael de Campos Castilho<br>Abstract: The expansion of agricultural areas has led to the loss of biodiversity due to the reduction of natural and semi-natural habitats in agricultural landscapes. With the increase of agricultural production in the world, environmentally sound techniques are increasingly discussed that allow a sustainable management of surrounding habitats. The effects of these habitats on the population of insect

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14

Johansson, Mats E. "Population biology of the clonal plant Ranunculus lingua." Doctoral thesis, Umeå universitet, Ekologi och geovetenskap, 1992. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-111108.

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The scope of this thesis was to identify, describe and quantify important life-history traits for the pseudoannual aquatic plant Ranunculus lingua in different ecological settings, by comparing populations from geographically marginal vs. central habitats. Results from a four-year field study showed that abiotic factors (water-level fluctuations and associated processes) tended to have a greater influence in marginal populations, whereas biotic factors (competition, insect grazing and fungal infections) dominated in central populations. This was reflected in different depth distribution of ram

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15

Marçal, Sandra Francisca [UNESP]. "Efeito de alterações do nível da água do reservatório Salto Grande, usadas para o controle de macrófitas, na estrutura e estabilidade da fauna de invertebrados fitófilos em uma lagoa marginal ao Rio Paranapanema." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/116034.

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Made available in DSpace on 2015-03-03T11:52:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-02-27Bitstream added on 2015-03-03T12:06:49Z : No. of bitstreams: 1 000807424_20161216.pdf: 2750566 bytes, checksum: 7abf8b6951850fddd07d259698cbd65f (MD5) Bitstreams deleted on 2016-12-16T09:54:40Z: 000807424_20161216.pdf,. Added 1 bitstream(s) on 2016-12-16T09:55:20Z : No. of bitstreams: 1 000807424.pdf: 4968033 bytes, checksum: e92dcddf8858995cc173cd998f274813 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Em ambientes aquáticos controlados por barragens

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Marçal, Sandra Francisca. "Efeito de alterações do nível da água do reservatório Salto Grande, usadas para o controle de macrófitas, na estrutura e estabilidade da fauna de invertebrados fitófilos em uma lagoa marginal ao Rio Paranapanema /." Botucatu, 2014. http://hdl.handle.net/11449/116034.

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Orientador: Virgínia Sanches Uieda<br>Banca: Ana Lúcia Brandimarte<br>Banca: Marcelo Luiz Martins Pompêo<br>Banca: Alaíde Aparecida Fonseca Gessner<br>Banca: Marcos Gomes Nogueira<br>Resumo: Em ambientes aquáticos controlados por barragens, a elevada estabilidade hídrica favorece a proliferação de macrófitas, sendo para seu controle utilizado um manejo por alterações no nível da água. Porém não existem estudos que avaliem o efeito dessa técnica, que gera condições extremas de seca e inundação sobre a fauna de invertebrados fitófilos. O presente trabalho foi realizado durante alterações operaci

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17

Odorizzi, dos santos Luan alberto. "Contribution of marginal non-crop vegetation and semi-natural habitats to the regulation of insect pests populationsby their natural enemies." Thesis, Avignon, 2017. http://www.theses.fr/2017AVIG0693/document.

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L'expansion des zones agricoles a conduit à la perte de biodiversité due à la réduction des habitats naturels et semi-naturels dans les paysages agricoles. Avec l'augmentation de la production agricole dans le monde, des techniques écologiquement rationnelles sont de plus en plus discutées qui permettent une gestion durable des habitats environnants. Les effets de ces habitats sur la population des insectes nuisibles et de leurs ennemis naturels sont encore mal connus. L'objectif de cette thèse était de comprendre les effets des environnements naturels et semi-naturels sur la population des in

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18

Mostert, Bruce Petrus. "Assessing the impact of climate change on mangrove crabs: the role of ontogenetic macrophysiology and settlement in the persistence of central and marginal populations." Thesis, Rhodes University, 2016. http://hdl.handle.net/10962/826.

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After a brief respite in the mid to late 20th century, macro physiology has come to the fore in elucidating large scale ecological patterns and processes as physiological assumptions often form the backbone of many predictive theories associated with species distributions. Critically, macro physiological patterns are valuable in explaining physiological variation across multiple scales and provide insights into the effects of climate change on populations spanning a wide range of latitudes. This can assist in predicting possible distribution expansions, contractions or shifts in light of curre

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19

Dearing, Mason Andrew. "Changes in marginal ridge alignment from early childhood to late adulthood in an untreated Caucasian population using the Iowa growth study sample." Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5454.

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Introduction: The purpose of this study was to evaluate the changes in marginal ridge alignment occurring through normal growth and development from early childhood to late adulthood and to examine if any statistical variation exists between males and females. Methods: Dental casts of 38 subjects (15 females and 23 males) from the Iowa Growth Study were selected. The marginal ridge discrepancy was measured as the absolute value difference between adjacent marginal ridges of 20 interproximal contacts with both the ABO tool (data not shown) and a vertically mounted digital caliper. Upper and low

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20

Karvonen, J. (Juhani). "Demography and dynamics of a partial migrant close to the northern range margin." Doctoral thesis, Oulun yliopisto, 2019. http://urn.fi/urn:isbn:9789526224664.

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Abstract Climate change causes range expansions, but neither the population parameters nor the ecological mechanisms behind range expansions are well known. I studied population dynamics and demography of the great tit (Parus major) in northern Finland, close to the northern range margin of the species’ distribution. I further examined winter conditions, such as temperature, as limiting factors on winter site fidelity and survival of human-fed great tits. Temporal variation in the population growth rate was large, but indicated an overall increasing population size, which fits the current larg

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MACRI', CARMELO NICODEMO. "Adaptations of plant species to environmental changes." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/1003150.

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The future climate change represents the biggest challenge for plant and animal species. The scenarios forecasted by the IPCC predict a global increase in temperatures and regional changes in rainfall during this century. Therefore, studying the relationship between climate and several traits of species is crucial in our understanding of the effects that future changes may have on plants. Species growing along a wide environmental gradient are a suitable study model to verify the relationship between intraspecific variability and both current and future climate. The aim of my PhD project is to

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Bona, Agnieszka Ewa. "Factors shaping genetic diversity of the shrub birch (Betula humilis Schrk.) in populations at the south-western margin of its range." Phd thesis, 2019. http://hdl.handle.net/11320/8599.

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Rozprawę doktorską stanowią cztery anglojęzyczne artykuły: 1) Chrzanowska A., Jadwiszczak K.A. 2015. Disappearing population of Betula humilis Schrk. on the Maliszewskie Lake, NE Poland. Biodiversity: Research and Conservation, 37(1): 69-73 2) Chrzanowska A., Jadwiszczak K.A., Kłosowski S., Banaszek A., Sozinov O.V. 2016. Sexual reproduction efficiency and genetic diversity of endangered Betula humilis Schrk. populations from edge and sub-central parts of its range. Folia Geobotanica 51: 161-173 3) Bona A., Petrova G., Jadwiszczak K.A. 2018. Unfavourable habitat conditions can facilitate hy

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23

Araújo, Rita Micaela dos Santos Fernandes. "Phenotypic traits of macroalgal populations at their southern margins." Doctoral thesis, 2011. http://hdl.handle.net/10400.1/10619.

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Tese de Doutoramento, Ciências do Mar, especialidade de Ecologia Marinha, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2011<br>Understanding the factors that determine species geographical ranges is a fundamental issue in ecology and evolutionary biology. Species geographical distribution reflects the range with suitable conditions for their persistence beyond which organisms’ tolerances and capacities are presumably constrained. At peripheral locations, where habitats are often fragmented, population persistence frequently relies on the differentiation of lifehistory traits ei

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Gauvin, Julie. "Étude de la migration des populations de lymphocytes B du sang de patients infectés par le virus d’immunodéficience humaine (VIH)." Thèse, 2015. http://hdl.handle.net/1866/13885.

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La dérégulation du compartiment de cellules B est une conséquence importante de l’infection par le virus de l’immunodéficience humaine (VIH-1). On observe notamment une diminution des nombres de lymphocytes B sanguins ainsi qu’une variation des fréquences relatives des différentes populations de lymphocytes B chez les individus infectés par rapport aux contrôles sains. Notre laboratoire a précédemment démontré l’implication des cellules dendritiques dans la dérégulation des lymphocytes B via la roduction excessive de BLyS/BAFF, un stimulateur des cellules B. De plus, lors l’études menées chez

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Jiang, Tammy. "Suicide and non-fatal suicide attempts among persons with depression in the population of Denmark." Thesis, 2021. https://hdl.handle.net/2144/42580.

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Depression increases the risk of suicide death and non-fatal suicide attempt. Between 2 - 6% of persons with depression will die by suicide1 and 25 - 31% of persons with depression will make a non-fatal suicide attempt during their lifetime.2,3 Despite the strong association between depression and suicidal behavior, the vast majority of persons with depression will not engage in suicidal behavior, making it difficult to accurately predict who is at risk for suicide and non-fatal suicide attempt. Identifying high risk persons who should be connected to suicide prevention interventions is an imp

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"Bursera microphylla in South Mountain Municipal Park: Evaluating its Habitat Characteristics." Master's thesis, 2011. http://hdl.handle.net/2286/R.I.9129.

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abstract: ABSTRACT The elephant tree, Bursera microphylla, is at the northern limit of its range in central Arizona. This species is sensitive to frost damage thus limiting its occurrence in more northern areas of the southwest. Marginal populations of B. microphylla are found in mountain ranges of Central Arizona and are known to occur in the rugged mountain range system of the South Mountain Municipal Park (SMMP). Little is known of the distribution of this species within the park and details relevant to the health of both individual plants and the population such as diameter and number of t

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MARCHI, MAURIZIO, Fulvio Ducci, and SUSANNA NOCENTINI. "Pinus nigra J.F. Arnold ssp. nigra var. italica: a study case of an isolated and altitudinally-marginal forest population in view of the Global Change." Doctoral thesis, 2015. http://hdl.handle.net/2158/987625.

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Kluth, Christian. "Zentrale und periphere Populationen von Hornungia petraea: Biodiversität und Demographie auf unterschiedlichen raum-zeitlichen Skalenebenen." Doctoral thesis, 2004. http://hdl.handle.net/11858/00-1735-0000-0006-B699-D.

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