Log in

Relevant bibliographies by topics / (Relational) ecology / Dissertations / Theses

To see the other types of publications on this topic, follow the link: (Relational) ecology.

Dissertations / Theses on the topic '(Relational) ecology'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic '(Relational) ecology.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Christion, Timothy C. Callicott J. Baird. "The turn from reactive to responsive environmentalism the wilderness debate, relational metaphors, and the eco-phenomenology of response /." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/ark:/67531/metadc12096.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Christion, Timothy C. "The Turn from Reactive to Responsive Environmentalism: The Wilderness Debate, Relational Metaphors, and the Eco-Phenomenology of Response." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12096/.

Full text

Abstract:

A shift is occurring in environmentalism to a post-metaphysical understanding of the human relationship to nature. Stemming from developments within the wilderness debate, ecofeminism, and eco-phenomenology, the old dichotomy between John Muir's tradition of privileging nature and Gifford Pinchot's tradition of privileging society is giving way to a relational paradigm that privileges neither. The starting point for this involves articulating the ontology of relationship anew. Insofar as the dominant metaphors of nature and their complimentary narratives present a choice between the agency of

APA, Harvard, Vancouver, ISO, and other styles

3

Jordan, Caroline Mackenzie. "Measuring Social Ecology: Comparing Perceptions Of Personal And Societal Relational Mobility In Japan And The United States." W&M ScholarWorks, 2020. https://scholarworks.wm.edu/etd/1616444349.

Full text

Abstract:

Relational mobility, i.e., the degree to which individuals are afforded opportunities to voluntarily form and terminate relationships in a given society, is proposed in previous research to underlie many cultural differences in psychology. However, questions remain about how to best measure the construct of relational mobility, and whether to consider relational mobility as a construct existing on the environmental or individual level. In this study, we test the measurement invariance of one proposed alternate measure, the personal mobility scale across the United States (n = 1,698) and Japan

APA, Harvard, Vancouver, ISO, and other styles

4

Salder, Jacob. "Sub-national governance and the relational spatial economy : examining spaces of firm-state engagement in the 'localist' era." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6565/.

Full text

Abstract:

Recent debate has focused on the role of state spatial approaches to the governance of an increasingly networked and fluid economy. This has seen transitions in both the scale of practise, focused on meso-level spaces, and the form of scalar fix, progressing from region to city-region and Functional Economic Area. As theories of spatial economy argue an increasingly dispersed mode of practise, integrated into global exchanges, state spatiality has responded through spatial reform to capitalise on this networked model. This study seeks to understand the link between spaces of economic governanc

APA, Harvard, Vancouver, ISO, and other styles

5

Meraz, Hernando Juan Francisco. "Seabird ecology in relation to fisheries." Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/2684/.

Full text

Abstract:

Previous research has hinted at changes in the migratory patterns of seabirds nesting in Scotland, including a decreasing number of Northern Gannets Morus bassanus wintering in the North Sea, and an increase in numbers of Northern Gannets and Great Skuas Stercorarius skua spending the winter off north-western Africa (NWA). Both species show increasing numbers of colonies in northern areas, including Norway and Russia. These seabird species move through the North Sea during autumn migration, and from there search for favourable wintering grounds mainly around Iberia, including the Atlantic coas

APA, Harvard, Vancouver, ISO, and other styles

6

Jackson, Susan. "Seabird digestive physiology in relation to foraging ecology." Doctoral thesis, University of Cape Town, 1990. http://hdl.handle.net/11427/21813.

Full text

Abstract:

This study addresses the question: are seabirds digestive opportunists or specialists? The extent of specialization in seabird digestive processes to different diets and foraging methods, is investigated experimentally. Gut passage rates of different food types of tested in vitro digestibility may reflect dietary specialization, with favoured prey types excreted more rapidly than less frequently encountered prey. Mean retention times of solid digesta are significantly correlated with foraging trip duration, and with gut length. Gut length and volume in tum scale with body mass. Assimilation ef

APA, Harvard, Vancouver, ISO, and other styles

7

Labinskyy, O. "Economy of health and ecology in the Polish-Ukrainian relations." Thesis, Видавництво СумДУ, 2004. http://essuir.sumdu.edu.ua/handle/123456789/23019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

VALLEFUOCO, FRANCESCA. "Advancing quantitative understanding of flow-ecology relations in Alpine rivers." Doctoral thesis, country:IT, 2022. http://hdl.handle.net/10449/76097.

Full text

Abstract:

Anthropic impacts adversely affect the productivity, integrity, connectivity, and resilience of riverine ecosystems, with widespread cumulative effects on the biota and biodiversity. The natural flow regime is a fundamental driver of physical and chemical processes, determining the morphological profile of the river systems and sustaining the complex network of ecological interactions and biological patterns. Therefore, in order to reach the environmental goals required by the binding legislation, and achieve a sustainable use of water resources, it is urgent to understand the mechanisms behin

APA, Harvard, Vancouver, ISO, and other styles

9

Vallefuoco, Francesca. "Advancing quantitative understanding of flow-ecology relations in Alpine rivers." Doctoral thesis, Università degli studi di Trento, 2022. http://hdl.handle.net/11572/348479.

Full text

Abstract:

Anthropic impacts adversely affect the productivity, integrity, connectivity, and resilience of riverine ecosystems, with widespread cumulative effects on the biota and biodiversity. The natural flow regime is a fundamental driver of physical and chemical processes, determining the morphological profile of the river systems and sustaining the complex network of ecological interactions and biological patterns. Therefore, in order to reach the environmental goals required by the binding legislation, and achieve a sustainable use of water resources, it is urgent to understand the mechanisms behin

APA, Harvard, Vancouver, ISO, and other styles

10

Middleton, Jessica. "Population ecology of a declining amphibian in relation to density." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114513.

Full text

Abstract:

In species with complex life cycles such as amphibians, population regulation can occur in one or multiple stages. Density effects in the larval, aquatic stage of the amphibian life cycle have been widely documented, leading many researchers to assume that this is the stage in which amphibian populations are regulated. However, recent evidence suggests that factors affecting survival and reproduction in the terrestrial stage may play a greater role in the growth and decline of amphibian populations than previously thought. I review the evidence for density-dependent population regulation in t

APA, Harvard, Vancouver, ISO, and other styles

11

Mwafongo, Elizabeth. "Population ecology of Aloe Plicatilis (Liliaceae) in relation to disturbance." Bachelor's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/26703.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Wickliffe, Lisa Claire. "Foraging ecology of seabirds in relation to commercial shrimp trawler activity." Connect to this title online, 2008. http://etd.lib.clemson.edu/documents/1211388637/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Kirkpatrick, Jon. "Assessing and improving the efficacy of BREEAM in relation to ecology." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4514.

Full text

Abstract:

The loss of ecological integrity as a result of urban spread and construction threatens the overall biodiversity of urban areas and prompts us to consider means of better including ecological biodiversity within development projects. The UK’s best practice tool for ensuring the integration of ecology into such projects is the Building Research Establishments Environmental Assessment Method (BREEAM). This thesis seeks to identify the efficacy of the current approach to ecological integration within BREEAM, and enable development to foster biodiversity and ecology more positively in the urban en

APA, Harvard, Vancouver, ISO, and other styles

14

Stone, Richard E. "The ecology and behaviour of waterbirds in relation to human activity." Thesis, Queen's University Belfast, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287430.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Malusa, James Rudolph. "The phylogeny and water relations of pinyon pines in relation to the vicariance biogeography of the American southwest." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/191149.

Full text

Abstract:

Axelrod (1958) suggested that the late Tertiary shift in regional climate -- the elimination of summer rains -- had a profound influence on the evolution of biotic provinces in the American southwest. In particular, the taxa endemic to biotic provinces characterized by summer drought, e.g., the Mojave Desert, should be derived from ancestors that likely inhabited regions of summer rain, e.g., the Chihuahuan Desert. Further, the derived features of summer-drought taxa should be related to water stress. I examined Axelrod's thesis, using a combination of phylogenetic systematics, physiological e

APA, Harvard, Vancouver, ISO, and other styles

16

Bergh, Nicola G. "Comparative water relations of indigenous and invasive Australian Proteaceae in fynbos." Bachelor's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/26049.

Full text

Abstract:

Water-use efficiency (WUE) as reflected in the leaf carbon stable isotope ratio was compared between co-occurring indigenous fynbos proteoids and invasive Australian hakeas H. sericea, H. gibbosa and H. suaveolens. At the driest site, H. suaveolens was slightly more WUE than several co-occurring proteoids; there was no significant difference between hakeas and proteas at the other sites. Transpiration rates of shoots and of whole trees were compared between Hakea sericea and Protea repens growing on Stellenboschberg northeast of Cape Town. Both measurements showed no real difference between th

APA, Harvard, Vancouver, ISO, and other styles

17

Setiapermana, Deddy. "Quantum yield of phytoplankton photosynthesis in relation to nutrient status." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255408.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Bell, Sophie Cressida. "The breeding ecology of the blue tit in relation to temperature microclimate." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/42500.

Full text

Abstract:

With warmer springs we observe earlier Spring phenologies. Long-term trends for earlier phenologies in warmer years have been demonstrated using population mean responses against temporal, altitudinal and latitudinal gradients. Temperature driven changes in phenology are measurable in a model system such as the oak-caterpillar-blue tit and the degree of change from one trophic level to the next can be compared across the network. The majority of studies on such a system focus on population mean trends. In this study I construct a geospatial model of temperature microclimates and test if variat

APA, Harvard, Vancouver, ISO, and other styles

19

Barker, Elizabeth Rachel. "Growth and carbon relations of the tomato-Orobanche aegyptiaca host-parasite association." Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265912.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Gould, Geoffrey Michael. "Signaling and Communication in the Breeding Behavior of the Lesser Prairie-Chicken (Tympanuchus pallidicinctus)." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595442814242732.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Gibbons, James M. "Water relations, phenology and drought adaptation of understorey trees in tropical lowland rain forest." Thesis, University of Stirling, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298566.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Duckworth, Jennifer Claire. "The vegetation of the Atlantic region of Europe in relation to environmental change." Thesis, Lancaster University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264125.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Halliwell, Elisabeth Clare. "The ecology of red squirrels in Scotland in relation to pine marten predation." Thesis, University of Aberdeen, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338333.

Full text

Abstract:

This study aimed to assess the impact of pine marten (<I>Martes martes</I>) predation on red squirrels (<I>Sciurus vulgaris</I>) in Scotland. Red squirrel density, range use and habitat selection were compared at two study sites: Novar, where pine martens were present, and Learney, where they were absent. At Novar there was a lower density of squirrels than at Learney. Habitat selection at Novar was greater than at Learney with squirrels preferring Scot pine (<I>Pinus sylvestris</I>) and avoiding sitka spruce (<I>Picea sitchenis</I>). At Learney, no selection was shown and with squirrels using

APA, Harvard, Vancouver, ISO, and other styles

24

Hewison, Aidan Jonathan Mark. "The reproductive performance of roe deer in relation to environmental and genetic factors." Thesis, University of Southampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333990.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Torres, Ana Cristina. "Initiatives citoyennes de conservation de la nature en milieu urbain : rôle des jardins partagés." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS557/document.

Full text

Abstract:

Les cadres théoriques de la conservation de la nature n’ont pas un caractère figé, mais ont évolué au cours du temps en privilégiant telles ou telles valeurs, notamment intrinsèques ou instrumentales. Or, les limites de ces cadres d’analyse pour susciter des engagements pour la nature ont été montrées. En m’appuyant sur la notion de valeurs relationnelles ainsi que sur celle des transformations des expériences de nature, j’ai conduit un travail qui veut apporter une réflexion complémentaire aux manières de concevoir la conservation de la nature. Pour cela, à travers l’étude transdisciplinaire

APA, Harvard, Vancouver, ISO, and other styles

26

Jeanmougin, Martin. "Relations entre espèces et habitats : de la théorie aux enjeux appliqués." Thesis, Paris, Muséum national d'histoire naturelle, 2017. http://www.theses.fr/2017MNHN0016/document.

Full text

Abstract:

Le constat actuel d’une perte de biodiversité est largement partagé au sein de la communauté scientifique mais également auprès du public et du monde politique. L’attention portée depuis plus d’une décennie aux changements climatiques et à leurs effets sur la biodiversité a parfois conduit à négliger le principal facteur d’érosion de la biodiversité : la destruction des habitats. Le but de cette thèse est d’étudier les relations entre espèces et habitats avec un focus particulier sur différentes composantes de ces relations.La thèse aborde ainsi dans une première partie l’histoire et l’évoluti

APA, Harvard, Vancouver, ISO, and other styles

27

Nadon, Daniel. "Abondance et spectre de taille des macroinvertébrés benthiques lotiques en relation avec l'abondance du périphyton." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6876.

Full text

Abstract:

Twelve streams of the Ottawa-Hull area were sampled between May 9, 1990 and August 1, 1991 to examine how benthic macroinvertebrate biomass and size spectra varied in relation to periphyton biomass. Among sites, non-filter-feeding macroinvertebrate biomass is correlated positively to periphyton biomass. This relation is defined by the regression equation: Log(BNF) = 1.64 + 0.41*Log(peri) (r$\sp2$ = 0.50, F = 9.9, p = 0.01, S$\sp2$ = 0.15, n = 12). The logarithm of the mean annual periphyton biomass explains 50% of the variance encountered in the logarithm of the mean annual non-filter-feeding

APA, Harvard, Vancouver, ISO, and other styles

28

Al-Sulaiti, Adeeba Mubarak. "Effect of drought on nitrogen metabolism and its relation with ABA in barley and maize." Thesis, Lancaster University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358871.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Ouellette-Plante, Jordan. "Spatial and temporal variation in the internal morphology of dreissenid mussels in relation to turbidity." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121522.

Full text

Abstract:

Rates of biological invasion of aquatic ecosystems are increasing worldwide, which has led to shifts in dominance, and even replacement, of established nonindigenous species. Such shifts have already been reported for several motile and some sessile invaders, with various replacement mechanisms proposed. Given that sessile species such as bivalves must acclimate to changing environments, I hypothesized that differences in the adaptive plasticity of invasive dreissenid mussels could explain a system-wide shift in dominance from the zebra mussel (Dreissena polymorpha) to the quagga mussel (D. ro

APA, Harvard, Vancouver, ISO, and other styles

30

Mellalieu, Simeon James. "Archaeology in the inter-tidal zone : models of lithostratigraphic resolution in relation to site preservation." Thesis, University College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266355.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Gill, Robin M. A. "The population dynamics of roe deer (Capreolus capreolus L.) in relation to forest habitat succession." Thesis, Open University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259681.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Havel, Jaroslav J. "Ecology of the forests of south western Australia in relation to climate and landforms." Murdoch University, 2000. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060815.114944.

Full text

Abstract:

This thesis sets out to test the hypothesis that the vegetational patterns in the forested region of south western Australia are primarily determined by the interaction of climate and landform. The region is an area of 4.25 million hectares subject to recent agreement between the Commonwealth of '4ustralia and the state of Western Australia regarding long-term protection and management of forest (Regional Forest Agreement). The climate of the South Western forest region is warm temperate and summer dry, matching Koeppen's category Cs, usually described as mediterranean. The dominant geological

APA, Harvard, Vancouver, ISO, and other styles

33

Havel, J. J. "Ecology of the forests of south western Australia in relation to climate and landforms /." Access via Murdoch University Digital Theses Project, 2000. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060815.114944.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Alvarez, Tania. "Epigeal Collembola in arable fields : their ecology in relation to the effects of pesticides." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285876.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Sharp, Graham. "Ecology and the labour process : towards a prefigurative sociology of the labour-nature relation." Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393213.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

McBain, Andrew James. "Probiosis and prebiosis in relation to the ecology and physiology of the colonic microbiota." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627267.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Van, Eeden Rowen Brandon. "Foraging ecology of the African Penguin Spheniscus demersus in relation to ocean physical processes." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/4764.

Full text

Abstract:

Includes abstract.<br>This research demonstrated the dual utility of bio-loggers as a method for generating accurate, high-resolution oceanographic data. These data can be used in future studies, generating a cross disciplinary platform for research. The thesis augments our knowledge base of the African Penguins foraging ecology. African Penguins show flexibility in their foraging behaviour by adjusting their dive behaviour to subsurface thermal structures. Penguins also demonstrated foraging optimization by using temperature cues and behavioral switching to maximize the probability of locatin

APA, Harvard, Vancouver, ISO, and other styles

38

Havel, Jaroslav Joseph. "Ecology of the forests of south western Australia in relation to climate and landforms." Thesis, Havel, Jaroslav Joseph (2000) Ecology of the forests of south western Australia in relation to climate and landforms. PhD thesis, Murdoch University, 2000. https://researchrepository.murdoch.edu.au/id/eprint/70/.

Full text

Abstract:

This thesis sets out to test the hypothesis that the vegetational patterns in the forested region of south western Australia are primarily determined by the interaction of climate and landform. The region is an area of 4.25 million hectares subject to recent agreement between the Commonwealth of Australia and the state of Western Australia regarding long-term protection and management of forest (Regional Forest Agreement). The climate of the South Western forest region is warm temperate and summer dry, matching Koeppen's category Cs, usually described as mediterranean. The dominant geologi

APA, Harvard, Vancouver, ISO, and other styles

39

Harris, J. G. "The epidemiology of mildew and other barley pathogens in relation to environmental factors and integrated control." Thesis, University of Southampton, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355626.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Mereghetti, Laurent. "Ecologie de Listeria monocytogenes : relations entre phylogénie et virulence." Tours, 2002. http://www.theses.fr/2002TOUR3301.

Full text

Abstract:

La baisse de sensibilité vis-à-vis des ammoniums quaternaires que nous avons observée chez 7 % des souches de Listeria monocytogenes n'est pas un élément majeur de la contamination humaine, mais a permis de mettre en évidence une distribution ubiquiste du système d'efflux proton-dépendant MdrL au sein de l'espèce. Ce travail préliminaire nous a orienté vers un objectif plus général afin de comprendre pourquoi les souches de Listeria monocytogenes prédominant dans les productions alimentaires contaminées par la bactérie appartiennent majoritairement à des sérotypes différents de ceux des souche

APA, Harvard, Vancouver, ISO, and other styles

41

Willott, Stephen John. "The thermal ecology and population dynamics of grasshoppers in relation to grazing on a Breckland grass heath." Thesis, University of East Anglia, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316109.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Hook, Andrew Nicholas. "The political ecology of small-scale gold mining reform in Guyana : resource competition, formal institutions, and green development pathways." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/80620/.

Full text

Abstract:

This thesis operationalizes a political ecology research programme to examine the different dimensions of environmentally-oriented small-scale gold mining reform within Guyana's unique mining setting. The study is based on a year of fieldwork in Guyana and employs a mix of spatial, quantitative, and qualitative data - including multiple Geographic Information Systems (GIS) maps, mineral property data, hundreds of secondary documents, three ethnographic site-based case studies, and 143 semi-structured interviews. The research approach examines the small-scale reform agenda in Guyana as a 'story

APA, Harvard, Vancouver, ISO, and other styles

43

Hudgens, Faith Victoria. "AN ASSESSMENT OF STREAM QUALITY IN RELATION TO POPULATION HEALTH OF PLANTAGO CORDATA." OpenSIUC, 2021. https://opensiuc.lib.siu.edu/theses/2887.

Full text

Abstract:

Understanding the health of rare and at-risk plant species is crucial for the conservation of biodiversity. Rare and at-risk species are often specialists with very specific requirements for growth and reproductive success. Some parameters associated with growth and reproductive success of rare aquatic species may include biotic and abiotic factors such as herbivory, competition, water depth, pH, and other factors associated with habitat quality. In this thesis, the population health of the rare and at-risk aquatic species Plantago cordata in Southern Illinois streams is assessed in relatio

APA, Harvard, Vancouver, ISO, and other styles

44

Smith, S. J. "Ecological strategies of two Ranunculus species in relation to seasonal submergence." Thesis, Open University, 1986. http://oro.open.ac.uk/56918/.

Full text

Abstract:

This thesis is concerned with the role of submergence in the ecology of the perennial Ranunculus repens and the annual R. sceleratus, both of which are common in seasonally submerged habitats. Evidence is presented for genetic differentiation between R. repens populations with respect to tactical changes in allocation and growth form in response to submergence. R. repens plants maintain or increase their dry weight allocation to stolons in response to submergence independent of site of origin. A decrease in flowering in submerged R. repens plants was related to a change in the positive correla

APA, Harvard, Vancouver, ISO, and other styles

45

Knecht, Billberger Magnus F. "Plant growth - stoichiometry and competition : theory development in ecosystem ecology /." Uppsala : Dept. of Ecology and Environmental Research, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200624.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Thompson, Elizabeth. "Mercury in Ontario wetlands: Concentrations in water, sediments, and a common aquatic plant in relation to geochemical variables." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/9900.

Full text

Abstract:

The factors that regulate bioaccumulation of mercury in wetland systems and aquatic plants in particular have yet to be identified. Concentrations of total mercury were determined in water, sediments, and the yellow pond lily (Nuphar variegatum L.) for 22 wetlands from South-Central Ontario (Lat. 45$\sp\circ\ 11\sp\prime,$ Long. 78$\sp\circ\ 50\sp\prime$; Lat 46$\sp\circ\ 19\sp\prime$, Long. 80$\sp\circ\ 47\sp\prime)$ and for 23 wetlands from the St. Lawrence River (Lat. 45$\sp\circ\ 02\sp\prime,$ Long. 74$\sp\circ\ 44\sp\prime).$ The South-Central wetlands are remote from any industrial sourc

APA, Harvard, Vancouver, ISO, and other styles

47

Kilburn, Vanessa. "Persistence and prevalence of the enzootic chytrid fungus, «Batrachochytrium dendrobatidis», in relation to amphibian population decline in Panama." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32555.

Full text

Abstract:

The pathogenic chytrid fungus, Batrachochytrium dendrobatidis, causes population decline and extinction of numerous species of tropical, principally montane, amphibians. Is B. dendrobatidis an enzootic pathogen emerging as a disease, or rather a novel invasive pathogen infecting naïve amphibians? Are only high-elevation amphibians susceptible to the pathogen? If the chytrid is enzootic, then it may be in the environment before or after epidemic decline and may infect both montane and lowland amphibians as

APA, Harvard, Vancouver, ISO, and other styles

48

Richardson, P. R. K. "The social behaviour and ecology of the aardwolf, Proteles cristatus (Sparrman,1783) in relation to its food resources." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355795.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Ormerod, S. J. "The distribution of macroinvertebrates in the upper catchment area of the River Wye in relation to ionic composition." Thesis, Cardiff University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356731.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Chandler, Mark. "The evolutionary ecology of parasitism in relation to recombination in a neotropical community of anurans." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39826.

Full text

Abstract:

The rate of recombination and parasite load of species of anuran from Peruvian Amazonia were examined to test the idea that recombination functions to diversify progeny in order to resist the continual counter-adaptation of parasites. The anurans were found to be hosts to over 32 species of macroparasite, as well as a wide variety of protistan and moneran parasites. It was found that a combination of three variables (diet, habitat, abundance), together with host body size accounted for a substantial proportion of the variation in mean parasite richness and parasite species distribution among h

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!