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Dissertations / Theses on the topic 'Ecological experiments'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Rose, Gregory. "Social Experiments in Innovative Environmental Management: The emergence of ecotechnology." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/976.

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Human production needs are met through the use of modern technology that is increasingly recognised as a threat to the planetary ecosystem and social sub-system. In light of this recognition, there is evidence that a planned transition towards more sustainable technological infrastructure is occurring across various production sectors. This change is often associated with re-orientating technology based on the concept of sustainable development and national-level strategies such as <i>ecological modernisation</i>, which prescribes phasing-out environmentally malignant conventional technolo

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2

Bird, David F. "The ecological importance of algal phagotrophy to lake plankton communities /." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75763.

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The aim of this thesis is to incorporate the smallest organisms, in particular the heterotrophic bacteria and their predators, more fully into current descriptions of aquatic community structure and dynamics. A strong, positive empirical relationship was found between bacterial abundance and chlorophyll concentration in freshwater and marine systems. Common members of the photosynthetic phytoplankton (all chrysophyceans) were shown to be major, even dominant, grazers of these bacteria. This phagotrophic capability is quantitatively important to the bacterioplankton, to the mixotrophs themselve

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3

Schill, Caroline. "Human Behaviour in Social-Ecological Systems : Insights from economic experiments and agent-based modelling." Doctoral thesis, Stockholms universitet, Stockholm Resilience Centre, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-141696.

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Progress towards sustainability requires changes in our individual and collective behaviour. Yet, our fundamental understanding of behaviour in relation to environmental change remains severely limited. In particular, little attention has been given to how individual and collective behaviours respond to, and are shaped by, non-linear environmental change (such as ‘regime shifts’) and its inherent uncertainties. The thesis makes two main contributions to the literature: 1) it provides one of the first accounts of human behaviour and collective action in relation to ecological regime shifts and

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4

Tanadini, Matteo. "Incorporating spatial and temporal variability in analyses of the relationship between biodiversity and ecosystem functioning." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:73c52d36-2e8a-4e04-92e0-a67ed93d7090.

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In the last few decades, a growing literature has examined how biodiversity influences ecosystem functioning. This body of work has greatly improved our understanding of ecosystem functioning and its modulation by biodiversity. In particular, there is nowadays large consensus that biodiversity increases ecosystem productivity, and stabilises ecosystems. Early investigations were largely theoretical or involved simple experiments run in laboratory conditions, but over time biodiversity ecosystem-functioning experiments evolved to more realistic field experiments that better represent the real c

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5

Tucker, Simon. "An ecological approach to the classification of transient underwater acoustic events : perceptual experiments and auditory models." Thesis, University of Sheffield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401126.

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6

Hoeksema, Jason Dale. "Mutualism and competition in ecological communities : biological market models and experiments with conifer seedlings and mycorrhizal fungi /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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7

Gherghel, Iulian. "HOW ECOLOGY AND EVOLUTION SHAPE SPECIES DISTRIBUTIONS AND ECOLOGICAL INTERACTIONS ACROSS TIME AND SPACE." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1607695751110949.

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8

Riehm, Christopher D. M. A. "On the Behavioral Dynamics of Human Sound Localization: Two Experiments Concerning Active Localization." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin159549944844441.

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9

Kulkarni, Devdutt [Verfasser]. "A combined approach of experiments and modelling for the implementation of freshwater copepods in ecological risk assessment / Devdutt Kulkarni." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/1052162770/34.

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Santos, Ligia Nicacio. "O despertar do ser sensível: educação ecológica e complexidade." Pontifícia Universidade Católica de São Paulo, 2015. http://tede2.pucsp.br/handle/handle/2524.

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Made available in DSpace on 2016-04-25T20:21:21Z (GMT). No. of bitstreams: 1 Ligia Nicacio Santos.pdf: 1328282 bytes, checksum: 171ddea17bef52c4b39e765d93ed3225 (MD5) Previous issue date: 2015-03-24<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Understanding Man under a transdisciplinary perspective, the study aims to understand the role of environmental education in human, civic and especially manifold human beings, making them able to think the complex world in a responsible and sustainable way. To this end, we sought to develop a transdisciplinary research based on aut

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Schumacher, Evelyn Verfasser], Matthias [Akademischer Betreuer] [Akademischer Betreuer] [Schaefer, Klaus [Akademischer Betreuer] Hövemeyer, and Christoph [Akademischer Betreuer] Leuschner. "The impact of ants on the aboveground and belowground ecological network - field studies in a grassland and experiments with microcosms / Evelyn Schumacher. Gutachter: Matthias Schaefer ; Klaus Hövemeyer ; Christoph Leuschner. Betreuer: Matthias Schaefer." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2011. http://d-nb.info/1042640165/34.

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12

Whittle, Don. "Stream mesocosms in ecological risk assessment : experimental, analytical and ecological considerations." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339940.

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13

Lurgi, Rivera Miguel. "The assembly and disassembly of ecological networks in a changing world." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/133289.

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El ensamblaje, estructuración y funcionamiento de las comunidades naturales, compuestas de muchas especies que forman redes complejas de interacciones ecológicas, ha desconcertado a los ecólogos durante muchas generaciones. Investigación ecológica pionera determinó que el tamaño de la comunidad y su complejidad (medida como la conectividad en la red de interacciones ecológicas) limita la estabilidad de la comunidad, y por lo tanto impiden que las comunidades sean indefinidamente complejas o ricas en especies. Investigación

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14

Vall-llosera, Camps Miquel. "Avian invasions: from basic to applied research." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/96891.

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La preocupació pels greus problemes ambientals i econòmics causats per les invasions biològiques ha provocat un enorme interès en tractar de comprendre els factors que influeixen en el procés invasiu. Aquesta informació és essencial per prevenir, avaluar i mitigar els impactes de les espècies invasores. En aquest context, aquesta tesi té dos objectius principals. El primer és descobrir què fa que una espècie tingui èxit en la invasió, i el segon investigar si aquests descobriments poden ser útils per prevenir els impactes dels invasors. Aquesta tesi explora aquestes qüestions utilitzant les au

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15

Jasmin, Jean-Nicolas. "Experimental evolution of ecological niches in heterogeneous environments." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27377.

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Organisms live in heterogeneous environments but fail to demonstrate optimal adaptation toil the totality of the ecological conditions they experience. This imperfection would result from trade-offs between ecologically relevant traits, which implies that trade-offs are the ultimate cause of major features of life such as biodiversity. Here, I selected bacterial populations in defined laboratory environments to test for the importance of differences in productivity and quality among alternative resources (Chapter 1), as well as the spatial pattern of resources (Chapter 2), in shaping the evolu

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Serra, Díaz Josep M. "Applying correlative ecological niche models to global change studies." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/96302.

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La distribució de les espècies ha estat objecte d’estudi per part de diverses disciplines donada la seva naturalesa multifactorial. Així, entendre veritablement la distribució de les espècies implica necessàriament un millor coneixement del funcionament de la biosfera. D’altra banda, el canvi global que està patint el nostre planeta previsiblement afectarà en gran mesura moltes espècies, variant així la distribució i composició dels ecosistemes tal i com els coneixem avui dia i implícitament dels serveis que proporcionen. La modelització ha permès augmentar el nostre grau de comprensió sob

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Chao, Vincent 1973. "Ecological and sexual divergence in experimental populations of Chlamydomonas." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32982.

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Laboratory studies on speciation have revealed that selection must be disruptively applied on traits related to the mating system in order to produce deviations from random mating in experimental populations. One problem with these experiments, however, has been the complexity of the model organism used, most frequently Drosophila species. Due to the multi genic nature of the mating systems of such organisms, it has been difficult to obtain the necessary gene combinations that result in complete sexual isolation. In the present study, I have used a simple sexual organism, the unicellular green

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Lapiedra, i. González Oriol. "Behavioral changes, ecological niches and adaptive diversification in pigeons and doves." Doctoral thesis, Universitat Autònoma de Barcelona, 2013. http://hdl.handle.net/10803/129322.

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L'extraordinària diversitat de l'ecologia, morfologia, comportament, i la riquesa d'espècies en tot l'arbre de la vida ha interessat els investigadors des de fa molt de temps. No obstant, entendre com i per què els llinatges es diversifiquen en el seu fenotip i en nombre d’espècies segueix sent un repte important en biología evolutiva. La diversificació evolutiva és un procés complex, influit per múltiples factors de diferent naturalesa. L'objectiu d'aquesta tesi és obtenir una visió integrada dels mecanismes que han portat a la diversitat biològica actual del grup dels coloms (ordre Columbif

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19

Freiherr, von Gagern Cyrill Antonius. "Ecological and economic impacts of distant water fishing: three empirical studies." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/283544.

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En la segona meitat del segle XX, la industrialització dels vaixells pesquers va donar lloc a una sobreexplotació dels recursos marins a les àrees costeres dels estats tradicionalment pesquers. En conseqüència, els països pesquers industrialitzats van començar a explorar les aigües llunyanes, en gran part sense traves legals, per alimentar la creixent demanda de peix i marisc. Amb l'entrada en vigor de la Convenció de les Nacions Unides de 1982 sobre el Dret del Mar (UNCLOS, en anglès), així com l’Acord de Recursos Pesqueres (“Fish stock agreement”) de les Nacions Unides de 1995, es van rees

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20

Sanhueza, Daniel. "Effets des conditions environnementales sur la croissance et l'expression génique de Mycobacterium ulcerans, agent causatif de l'ulcère de Buruli." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTT054.

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Mycobacterium ulcerans (MU), agent causatif de l'ulcère de Buruli (UB), une maladie infectieuse humaine émergente, est associé aux milieux aquatiques tropicaux, et en particulier ceux modifiés par les activités humaines. L’écologie de cette mycobactérie est encore peu informée, et des interrogations demeurent sur son cycle de transmission au sein des écosystèmes et à l’humain. La tendance observée aujourd’hui en recherche est de montrer l’existence d’une multitude de taxa porteurs du bacille au sein des écosystèmes aquatiques mais aussi terrestres, laissant donc imaginer qu’un ou quelques fact

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21

Flo Sierra, Víctor. "Global ecological drivers of transpiration regulation in trees." Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/671909.

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22

Caes, Beatriz Rosângela Murbach [UNESP]. "Mastofauna terrestre associada a áreas em processo de restauração na fazenda experimental Edgárdia, Botucatu –SP." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/99761.

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Made available in DSpace on 2014-06-11T19:30:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-05-13Bitstream added on 2014-06-13T21:00:53Z : No. of bitstreams: 1 caes_brm_me_botfca.pdf: 1624115 bytes, checksum: a43b9ce0832b0b5f1313874e1d6700e0 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>A restauração de ecossistemas degradados envolve conhecimentos no que se refere à reconstituição da estrutura do ecossistema e da dinâmica das espécies, tanto vegetais quanto animais. Sabe-se que, no processo de restauração de um ecossistema, as interações ecológicas na

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Souza, Miller José Moura. "Impactos da urbanização e do uso recreativo em espécies bentônicas supralitorais de praias arenosas tropicais." Universidade Federal de Sergipe, 2016. https://ri.ufs.br/handle/riufs/4471.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>With the advance of urbanization towards the coast, this ecosystems have been passing throught anthropic interventions by its intention to offer habitation, turism and recreation. However, this interferences can give birth to changes over the biodiversity of various ecosystems. In face of this situation, this research has, as its objectives: to analyse the impacts provoked by the various levels of urbanization over the population of Ocypode quadrata Fabricius, 1787 (Crustacea: Decapoda, Ocypodidae) and Bledius Leach, 1

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Morais, Joicy Martins. "Experimentos de remoção de plantas: abordagem cienciométrica e estudo de caso." Universidade Federal de Goiás, 2013. http://repositorio.bc.ufg.br/tede/handle/tede/3520.

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Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2014-11-03T13:38:20Z No. of bitstreams: 2 Dissertação - Joicy Martins Morais - 2013.pdf: 662106 bytes, checksum: c4e0fdd3441863cf9479d5c5b0b5be2f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2014-11-04T09:48:31Z (GMT) No. of bitstreams: 2 Dissertação - Joicy Martins Morais - 2013.pdf: 662106 bytes, checksum: c4e0fdd3441863cf9479d5c5b0b5be2f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Made

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Caes, Beatriz Rosângela Murbach 1983. "Mastofauna terrestre associada a áreas em processo de restauração na fazenda experimental Edgárdia, Botucatu -SP /." Botucatu : [s.n.], 2009. http://hdl.handle.net/11449/99761.

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Resumo: A restauração de ecossistemas degradados envolve conhecimentos no que se refere à reconstituição da estrutura do ecossistema e da dinâmica das espécies, tanto vegetais quanto animais. Sabe-se que, no processo de restauração de um ecossistema, as interações ecológicas na comunidade têm um papel fundamental para o aumento de sua complexidade e, conseqüentemente, sua biodiversidade. Este trabalho teve como objetivo geral contribuir para o conhecimento de alguns processos envolvidos na restauração de ecossistemas florestais, no que se refere à associação entre a mastofauna e a vegetação de

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Santos, Bianca Gonçalves dos. "Efeitos diretos e indiretos de fertilizantes sobre comunidades aquáticas experimentais." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-11102013-123340/.

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A demanda da população humana por alimentos, fibras e biocombustíveis impõe crescimento pronunciado na agricultura intensiva e, com ela, no consumo de fertilizantes. Este manejo de fertilizantes leva a alterações dramáticas nas quantidades e proporções de nutrientes em agroecossistemas que, por sua vez, podem influenciar comunidades biológicas por meio de alterações na biomassa, qualidade nutricional e composição de produtores. Uma tendência no cenário produtivo brasileiro recente é a expansão das culturas de biocombustíveis, notadamente da cana-de-açúcar (etanol) e da soja (biodiesel), sobre

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Silva, Macher Jose Carlos. "Studies of social metabolism at the commodity frontiers of Peru." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/400656.

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La tesis busca contribuir a un mejor entendimiento de los complejos conflictos ecológico-distributivos en las fronteras de extracción, donde el aumento del metabolismo de las sociedades industriales conduce a una mayor destrucción del medio ambiente en países ricos en recursos naturales alrededor del mundo. Se desarrollan tres casos de estudios –Camisea, Conga y Sierra del Divisor, los cuales se explicarán más adelante. Se utiliza la teoría de flujos y fondos (Georgescu-Roegen, 1971) para desarrollar representaciones analíticas de los procesos económicos centrales que intervienen en cada cas

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García, López Juan Antonio. "Genomic patterns and phenotypic plasticity in prokaryotes analyzed within an ecological framework." Doctoral thesis, Universitat Autònoma de Barcelona, 2009. http://hdl.handle.net/10803/42004.

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García, Callejas David. "Structure and dynamics of ecological networks with multiple interaction types." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/665700.

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Los organismos vivos se mantienen y reproducen a través de interacciones con individuos de su misma y de otras especies. Las interacciones bióticas son extremadamente diversas en tipo, magnitud, y escala, y dan lugar a redes ecológicas de topología compleja. Dichas redes poseen propiedades que determinan su resiliencia y resistencia frente a perturbaciones, de tal manera que son elementos de estudio clave para comprender las respuestas de comunidades ecológicas frente a fenómenos como el cambio climático o la pérdida de hábitats. A pesar de la importancia del concepto de red en estudios eco

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Sundberg, Sebastian. "The ecological significance of sexual reproduction in peat mosses (Sphagnum)." Doctoral thesis, Uppsala University, Department of Evolutionary Biology, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-526.

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<p>Peat mosses (<i>Sphagnum</i>) are widely distributed and are a major component of mire vegetation and peat throughout the boreal and temperate regions. Most boreal <i>Sphagnum</i> species regularly produce sporophytes, but the ecological role of the spore has been questioned. This study shows that the spores can form a spore bank and have the ability to germinate and contribute to moss establishment whenever suitable conditions occur. The results suggest that spore production is important for explaining the wide distribution and omnipresence of <i>Sphagnum</i> in nutrient-poor wetlands. The

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Carnicer, Cols Jofre. "Species richness, interaction networks, and diversification in bird communities: a synthetic ecological and evolutionary perspective." Doctoral thesis, Universitat Autònoma de Barcelona, 2007. http://hdl.handle.net/10803/3690.

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Aquesta tesi examina els mecanismes ecològics i evolutius que mantenen els gradients de riquesa específica en ocells. S'examinen en primer lloc el patrons de diversitat de l'avifauna de Nord Amèrica. (capitol 1). Tot seguit es testen mecanismes a escala regional, tot estudiant el cas de l'avifauna de Catalunya (capitols 2 i 3). Finalment, es testen diferents mecanismes que regulen la diversitat a escala local en una comunitat d'ocells frugívors al Parc nacional de Doñana. El capitol 6 integra tots els anteriors i els relaciona tot fent una revisió bibliogràfica en profunditat.<br/>Paraules cla

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Del, Bene Daniela. "Hydropower and ecological conflicts. From resistance to transformations." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/664010.

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El sector hidroeléctrico está pasando por una fase de expansión a nivel global, siendo promovido como una fuente de energía sostenible y renovable. Sin embargo, la construción de represas está causando un creciente número de conflictos ambientales debido a sus impactos ecológicos y sociales. Al mismo tiempo, activistas y comunidades afectadas se organizan en movimientos sociales y redes internacionales para denunciar impactos y violencia en sus territorios. Hasta la fecha, la investigación se ha centrado en gran medida en evaluar los impactos específicos de las grandes represas y la oposic

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Bailey, Susan F. "The Effects of Competition and Ecological Opportunity on Adaptation and Diversification." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/26229.

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Ecological processes have the potential to influence evolution through their effects on selection. This thesis explores the effects of two ecological factors - competition and ecological opportunity. Intraspecific (within-species) competition is often expected to drive adaptation and diversification by increasing selection for the use of novel resources, thereby alleviating the detrimental effects of competition. However, this is not always the expected outcome; theory suggests that intraspecific competition can also drive convergent evolution. On the other hand, interspecific (between-speci

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Tomlinson, Benjamin John. "Modelling Social-Ecological Systems in the Catalan Coastal Zones." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/384929.

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The Systems Approach Framework (SAF) is a methodological framework designed to enhance the efficacy of human decision-making processes within social-ecological systems with regard to sustainability. The SAF was applied in two case studies in the coastal zone of Catalonia, in two separate European Commission Framework Programme projects entitled “Science and Policy Integration for Coastal System Assessment” (SPICOSA) and “Vectors of Change in Oceans and Seas-marine Life, Impact on Economic Sectors" (VECTORS). During the SPICOSA application, a common issue of interest to most stakeholders wa

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Abdula, Samira Abdul-Hussain Abdula. "An ecological and experimental study of sediment-benthos interactions in a polluted estuary." Thesis, University of Glasgow, 1985. http://theses.gla.ac.uk/2750/.

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Hoshaw, Robert M. 1983. "The Contribution of Reflective Writing to Ecological Awareness at the H.I. Andrews Experimental Forest." Thesis, University of Oregon, 2009. http://hdl.handle.net/1794/9872.

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ix, 94 p. : ill. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.<br>This thesis examines the Long-Term Ecological Reflections at H.J. Andrews Experimental Forest, Oregon, a project that promotes creative inquiry at an ecological research station. I analyze how reflective writing contributes to a deeper understanding of ecosystem processes and fosters a closer connection to nature, referred to as "ecological awareness." I argue that the greatest ecological awareness comes from a combination of scientific and

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Górka, Katarzyna. "Dental morphology and dental wear as ecological and alimentary indicators: sexual and intergroup variation in traditional human populations." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/384843.

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Sexual division of labour involving the use of teeth in non-masticatory activities in the Tigara population form Point Hope did not affect the wear of the upper and lower first molars and, therefore, food chewing was the main factor causing dental wear in this population. No sexual differences were found in the percentage of dentine exposure of the first molars, which is indicative that both sexes in the Tigara populations consumed very similar diets despite sex differences in the dental wear on the anterior dentition have been reported. The percentage of dentine exposure was positively correl

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Fischer, Felícia Miranda. "Relações entre estrutura funcional, diversidade e estabilidade ecossistêmica em comunidades vegetais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/187268.

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Dentre as ameaças causadas pealas mudanças climáticas, é esperado um aumento na frequência e na magnitude de eventos climáticos extremos. Portanto, é de vital importância identificar características da comunidade que confiram estabilidade aos processos ecossistêmicos. Por meio de três experimentos buscamos explorar essas intrincadas relações entre alguns aspectos da biodiversidade e a estabilidade ecológica. No primeiro estudo, comparamos a produtividade primária antes e depois de uma inundação em comunidades sintéticas com diferentes valores de riqueza de espécies, diversidade e composição fu

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Hudson, Herman W. "Development of forested wetland ecological functions in a hydrologically controlled field experiment in Virginia, USA." W&M ScholarWorks, 2016. https://scholarworks.wm.edu/etd/1539616703.

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Forested headwater wetlands provide numerous ecosystem functions and services and are often disturbed, impacted, or destroyed due to their position in the landscape. This has led to many successful and unsuccessful attempts to restore these important ecosystems. Returning trees to these restored ecosystems has proven to be particularly challenging. to increase successful forested headwater wetland restoration, this dissertation recommends tree species and stocktypes that could be planted to return lost ecosystem structure and ecological functions. This dissertation focuses on a created experim

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Kriska, David J. "Restoration of Black Oak (Quercus velutina) Sand Barrens via three different habitat management approaches." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1506811044845704.

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Houpt, Noah. "The Evolution of Ecological Interactions During Adaptive Diversification in Pseudomonas Aeruginosa." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42627.

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Ecological opportunity—the availability of open niche space to an evolving lineage—has long been thought to modulate the extent of adaptive diversification. Many microbial evolution experiments have confirmed that ecological opportunity drives diversification of initially homogeneous populations into communities of ecologically distinct sub-lineages (ecotypes). Interactions among ecotypes are crucial for both community function and the maintenance of the ecological diversity produced during adaptive diversification, however the factors influencing the evolution of these interactions remain un

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Bjorkman, Anne Donahey. "Ecological and evolutionary consequences of experimental and natural warming in the high Arctic tundra." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/51901.

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Recent increases in global temperatures are having substantial and often unpredictable consequences for the earth’s biota. Species’ responses to environmental change depend on 1) the ability of individuals to adjust in situ through phenotypic plasticity, 2) the rate at which evolutionary adaptation can occur, and 3) the ability of individuals to colonize newly suitable habitat through migration or propagule dispersal. Temperatures in the Arctic are increasing faster than anywhere else, yet our understanding of the consequences of climate change in the Arctic lags behind that of temperate ecosy

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Tan, Jiaqi. "Experimental studies of the causes and consequences of biodiversity over ecological and evolutionary timescales." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54004.

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This dissertation presents four microbial microcosm-based experimental studies addressing questions related to the causes and consequences of biodiversity. All four studies adopted an approach that integrates ecology and evolutionary biology. Two studies explored the utility of knowledge on species phylogenetic relationships for understanding community assembly (chapter 1) and invasibility (chapter 3). The other two studies investigated the impacts of important ecological factors, including competition (chapter 2) and temporal niches (chapter 4), on adaptive radiation, using the rapidly divers

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Gallois, Sandrine. "Dynamics of Local Ecological Knowledge A case study among the Baka children from southeastern Cameroon." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/382477.

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Esta tesis de doctorado analiza los procesos de adquisición de conocimiento ecológico local por parte de los niños (entre cinco y dieciséis años) en una sociedad de cazadores-recolectores en un contexto de rápidos cambios socio-ecológicos: los baka de sureste de Camerún. El principal enfoque de la tesis es en el contexto en el cual ocurre la adquisición de los conocimientos y las actuales transformaciones de este contexto,. En sus cinco capítulos empíricos, esta tesis investiga: a) los conocimientos ecológicos locales de los niños baka; b) el contexto en el cual los niños adquieren los conocim

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Cortés, Gimeno M. Pilar. "Distribución y dinámica de un Quercus caducifolio (Q. cervoides Wilk&Costa) y uno perennifolio (Q. ilex L) en Cataluña. Análisis de la ecología de la reproducción. La respuesta de las plantulas a factores ambientales y la respuesta a las perturbaciones." Doctoral thesis, Universitat Autònoma de Barcelona, 2003. http://hdl.handle.net/10803/5642.

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Riesgo, Gil Ana. "Sexual Reproduction in Demosponges: Ecological and Evolutive Implications / Reproducción sexual en demosponjas: implicaciones ecológicas y evolutivas." Doctoral thesis, Universitat de Barcelona, 2007. http://hdl.handle.net/10803/845.

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The reproductive biology of poriferans is still poorly understood. We have investigated the sexual reproductive biology of seven demosponge species, six of them from the Mediterranean (<I>Corticium candelabrum, Crambe crambe, Raspaciona aculeata, Axinella damicornis, Chondrosia reniformis</I>, and <I>Petrosia ficiformis</I>), and one from the Pacific coast of Canada (<I>Asbestopluma occidentalis</I>). The thesis consists of a general introduction, 7 different chapters and a general discussion.<br/>Chapter 1. It is well established that in temperate regions invertebrates restrict their reproduc

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Supramaniam, Meera. "A space for resistance understanding the socio-ecological archetype of successful resistance: case study of Gallecs." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/665181.

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Per descriure el arquetipus del èxit de la resistència a la urbanització, s’analitza el cas d’estudi de Gallecs, una zona rural rodejada de territori urbanitzat de 733,52 hectàrees a 20Km de Barcelona. El conflicte va començar als anys 70 y ara aquesta zona y les persones que hi viuen han assolit i assegurat un nivell d’estabilitat per viure en un Gallecs rural. Les dades primàries i secundàries han estat analitzades a nivell micro amb les teories fonamentades i les dades de nivell meso i macro, com a “blocs de construcció” per el cas del estudi (Thomas, 2011), són utilitzats per descriure

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Groenendijk, Jeroen Pascal. "Towards recovery of native dry forest in the Colombian Andes a plantation experiment for ecological restoration /." Amsterdam : Amsterdam : Universiteit van Amsterdam, IBED ; Universiteit van Amsterdam [Host], 2005. http://dare.uva.nl/document/79901.

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Haag, Daniel. "Models for the representation of ecological systems? the validity of experimental model systems and of dynamical simulation models as to the interaction with ecological systems /." [S.l.] : [s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=962066893.

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Haag, Daniel. "Models for the representation of ecological systems? the validity of experimental model systems and of dynamical simulation models as to the interaction with ecological systems /." [S.l. : s.n.], 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9386085.

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