Log in

Relevant bibliographies by topics / Radiation ecology / Dissertations / Theses

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

Dissertations / Theses on the topic 'Radiation ecology'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 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 'Radiation 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

Kutlakhmedov, Yuriy Alekseevich, Anastasiya Georgievna Salivon, Svetlana Anatolyevna Phelovskya, Victor Vladimirovich Rodyna, Irina Valeryevna Matveeva, and Valentina Pavlovna Petrusenko. "Theory of Reliability in Radiation Ecology." Thesis, Industrial Engineering and Management Department SCE - Shamoon College of Engineering Beer Sheva (Israel), 2010. http://er.nau.edu.ua/handle/NAU/23676.

Full text

Abstract:

Proceedings of the international symposium on stochastic models in reliability engineering, life science and operations management<br>For twenty years after Chernobyl catastrophe, we studied capability of plants of different kinds to store and retain the radionuclide tracer 137Cs as the measure of stability and reliability of the ecosystem biota exposed to gamma-radiation and chemical pollutants. We introduced two parameters to quantify the ecosystem reliability. First, radiocapacity is defined as the upper level of radionuclide contamination, above which the ecosystem biota species begin to m

APA, Harvard, Vancouver, ISO, and other styles

2

De, León Reyna Luis. "The ecology of adaptive radiation in Darwin's finches." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96827.

Full text

Abstract:

The ecological theory of adaptive radiation postulates that divergent natural selection between populations occupying contrasting environments, or using different resources, can drive adaptive divergence and thereby cause speciation. My thesis investigates this hypothesis in Darwin's finches of the Galápagos Islands. I use field observations, genetic tools, and statistical analyses to study patterns of sympatric coexistence, niche use, adaptive divergence, and gene flow within and among four closely-related species of Ground finches (Geospiza spp.). I also quantify possible impacts of human di

APA, Harvard, Vancouver, ISO, and other styles

3

Reeves, Gail. "Radiation and macroevolutionary ecology of the African genus protea." Thesis, Imperial College London, 2001. http://hdl.handle.net/10044/1/8385.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Pahkala, Maarit. "Evolutionary ecology of ultraviolet-B radiation stress tolerance in amphibians." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5081-4/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Siebeck, Ulrike Elisabeth. "UV vision and visual ecology of reef fish /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16520.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

King, Richard W. "The threespine stickleback adaptive radiation| Salinity, plasticity, and the importance of ancestry." Thesis, Clark University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10075068.

Full text

Abstract:

<p> Adaptive radiations offer unique insight into how diversification is initiated in novel or changing environments but the value of such studies is often limited by incomplete or lacking information on the ancestral species. The threespine stickleback species complex is proving to be particularly valuable in enhancing our understanding of evolutionary processes because there is reason to believe a surrogate for the ancestral group is extant and representative of the oceanic form that gave rise to most post-glacial freshwater populations during the last ~12,000 years. If we are to maximize th

APA, Harvard, Vancouver, ISO, and other styles

7

Stroud, James T. "Using Introduced Species of Anolis Lizards to Test Adaptive Radiation Theory." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3695.

Full text

Abstract:

Adaptive radiation – the proliferation of species from a single ancestor and diversification into many ecologically different forms – has long been heralded as an important process in the generation of phenotypic diversity. However, the early stages of adaptive radiation are notoriously elusive to observe and study. In this dissertation, I capitalize on communities of introduced non-native Anolis lizards as analogues of early stage adaptive radiations. In Chapter II, I begin by reviewing the concept of “ecological opportunity” – a classic hypothesis put forward as a potential key to understand

APA, Harvard, Vancouver, ISO, and other styles

8

Walton, Angela Jasmin. "Radiation biology of Eldana saccharina Walker (Lepidoptera: Pyralidae)." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6685.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Havran, J. Christopher. "Ecology and Evolution of the Hawaiian Violets." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1210337818.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Waiser, Marley J. "The effect of solar radiation on the microbial ecology and biogeochemistry of prairie wetlands." Thesis, Edinburgh Napier University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343410.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Jensen, Brandi Jean. "The role of infrared radiation in the evolution and ecology of anaerobic photosynthetic bacteria." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1594477811&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Rautio, Milla. "Ecology of zooplankton in subarctic ponds, with a focus on responses to ultraviolet radiation." Helsinki : University of Helsinki, 2001. http://ethesis.helsinki.fi/julkaisut/mat/ekolo/vk/rautio/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Macdonald, Kenneth S. III. "Molecular and morphological evolution of the amphipod radiation of Lake Baikal." W&M ScholarWorks, 2002. https://scholarworks.wm.edu/etd/1539616759.

Full text

Abstract:

The amphipods of Lake Baikal, Russia, are a taxonomically and morphologically diverse group, and have been cited as a classic example of adaptive radiation. An unfortunate consequence of this diversity has been an instability of Baikal amphipod classification, with frequent revisions spurred by differing opinions about the phylogenetic utility of different characters. Classifications have never been based on a rigorous phylogenetic analysis of morphological data and only recently has the phylogeny of Lake Baikal's amphipods been examined using molecular tools. Unfortunately, most of these stud

APA, Harvard, Vancouver, ISO, and other styles

14

Martinez, Nicole. "Selected techniques in radioecology| Model development and comparison for internal dosimetry of rainbow trout (Oncorhynchus mykiss) and feasibiltiy assessment of reflectance spectroscopy use as a tool in phytoremediation." Thesis, Colorado State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3624304.

Full text

Abstract:

<p>Over the past five to ten years, public interest in nuclear energy, decommissioning, and waste management and stewardship has increased, leading to a renewed interest in radioecology (Kuhne 2012), or the study of the relationships between ionizing radiation and the environment (Whicker and Shultz 1982a). Several groups supporting collaborative radioecological research have recently been established, including the European Radioecology ALLIANCE in 2009 (Hinton et al. 2013), the Strategy for Allied Radioecology (STAR) network in 2011 (Kuhne 2012), and the National Center for Radioecology (N

APA, Harvard, Vancouver, ISO, and other styles

15

Przeslawski, Rachel. "Sunburnt sea snails the role of ultravoilet radiation in the development of encapsulated embryos from temperate rocky shores /." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060221.093951/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Susoy, Vladislav [Verfasser], and Ralf J. [Akademischer Betreuer] Sommer. "Developmental Plasticity, Ecology, and Evolutionary Radiation of Nematodes of Diplogastridae / Vladislav Susoy ; Betreuer: Ralf J. Sommer." Tübingen : Universitätsbibliothek Tübingen, 2016. http://d-nb.info/1164017705/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Torabinejad, Javad. "Ultraviolet-B Radiation : Effects on Pollen of 34 Taxa, and Inheritance Patterns and Carryover of Radiation Response in Arabidopsis." DigitalCommons@USU, 1999. https://digitalcommons.usu.edu/etd/6575.

Full text

Abstract:

Although considerable research has addressed effects of elevated ultraviolet-B (UV-8) radiation on vegetative plant structures and processes, the reproductive biology and patterns of inheritance of UV-B tolerance have received much less attention. I examined the effects of UV-B radiation on pollen of 34 taxa. I also addressed questions concerning the patterns of inheritance of UV-B tolerance in Arabidopsis thaliana and examined potential cumulative carryover effects of UV-B exposure through multiple generations of this species. In the first study, a significant reduction in pollen germination

APA, Harvard, Vancouver, ISO, and other styles

18

Tucker, Andrew J. "The role of ultraviolet radiation in mediating warmwater fish invasion in transparent lakes." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1304020369.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Imeh-Nathaniel, Adebobola. "Evolutionary Ecology of Arabidopsis thaliana: Interactions with Biotic and Abiotic Environmental Factors." Bowling Green State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1351039606.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

MacLean, Roderick Craig. "Adaptive radiation and the evolution of resource specialization in experimental populations of Pseudomonas fluorescens." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85576.

Full text

Abstract:

Understanding the origins of biological diversity is a fundamental goal of evolutionary biology. A large body of theory attributes ecological and genetic diversification to divergent natural selection for resource specialization. This thesis examines adaptive radiation in response to selection for resource specialization in microcosm populations of the asexual bacterium Pseudomonas fluorescens. The general protocol for these experiments is to introduce a clonal population of Pseudomonas into a novel environment and to allow evolution to occur through the spontaneous appearance of novel

APA, Harvard, Vancouver, ISO, and other styles

21

Han, Taejun. "Effect of visible and UV radiation on early sporophytes of species of the Laminariales." Thesis, University of Liverpool, 1992. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316578.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Moore, Joel Grant. "Diversity, productivity, and physiology of microorganisms in the stream-moat-lake transition of Lake Bonney, Antarctica." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/moore/MooreJ0507.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Levis, Nicholas A. "Level of UV-B Radiation Influences the Effects of Glyphosate-Based Herbicide on Fitness of the Spotted Salamander." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1335.

Full text

Abstract:

Numerous causes have been implicated in contributing to amphibian population declines since the 1980's, with habitat modification, ultraviolet radiation (UV-B) and environmental contaminants (such as glyphosate-based herbicide) being among the most common. This study identifies the effects of a generic glyphosate-based herbicide (GLY- 4 Plus) on mortality, immune function, body condition, and morphological plasticity of larvae of the spotted salamander (Ambystoma maculatum) under conditions that reflect open and closed canopy light regimes. Larval salamander responses to glyphosate-based herbi

APA, Harvard, Vancouver, ISO, and other styles

24

Raines, Katherine Elizabeth. "The effects of chronic low-dose radiation on bumblebees." Thesis, University of Stirling, 2018. http://hdl.handle.net/1893/28699.

Full text

Abstract:

The consequences to wildlife of living in contaminated areas with chronic low-dose rates of radiation are still relatively unknown. Laboratory studies using acute radiation have demonstrated that invertebrates are relatively radioresistant compared to other taxa. However, there is little scientific evidence to show how chronic low dose rates affect invertebrates. This is problematic for understanding the consequences to wildlife living in highly contaminated areas and also testing assumptions made for invertebrates by the International Commission on Radiological Protection (ICRP). This thesis

APA, Harvard, Vancouver, ISO, and other styles

25

Da, Silva Jessica Marie. "An investigation of the evolutionary diversification of a recent radiation of dwarf chameleons (Bradypodion) from KwaZulu-Natal Province, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86306.

Full text

Abstract:

Thesis (PhD)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: An important prerequisite for evolutionary change is variability in natural populations; however, when phenotypic and molecular rates of change differ, species delimitation is problematic. Such discordance has been identified in a recent radiation of dwarf chameleons (Bradypodion) from KwaZulu-Natal Province, South Africa. This radiation is comprised of several phenotypic forms, two of which have been classified taxonomically – Bradypodion melanocephalum and Bradypodion thamnobates. Early phylogenetic analysis did not supp

APA, Harvard, Vancouver, ISO, and other styles

26

Stumpf, Thorsten, Harald Foerstendorf, Frank Bok, and Anke Richter. "Annual Report 2014 - Institute of Resource Ecology." Helmholtz-Zentrum Dresden-Rossendorf, 2015. https://hzdr.qucosa.de/id/qucosa%3A22224.

Full text

Abstract:

The Institute of Resource Ecology (IRE) is one of the eight institutes of the Helmholtz-Zentrum Dresden – Rossendorf (HZDR). The research activities are mainly integrated into the program “Nuclear Waste Management, Safety and Radiation Research (NUSAFE)” of the Helmholtz Association (HGF) and focused on the topics “Safety of Nuclear Waste Disposal” and “Safety Research for Nuclear Reactors”. Additionally, various activities have been started investigating chemical and environmental aspects of processing and recycling of strategic metals, namely rare earth elements. These activities are located

APA, Harvard, Vancouver, ISO, and other styles

27

Stumpf, Thorsten, Harald Foerstendorf, Frank Bok, and Anke Richter. "Annual Report 2016 Institute of Resource Ecology." Helmholtz-Zentrum Dresden-Rossendorf, 2017. https://hzdr.qucosa.de/id/qucosa%3A22332.

Full text

Abstract:

The Institute of Resource Ecology (IRE) is one of the eight institutes of the Helmholtz-Zentrum Dresden – Rossendorf (HZDR). The research activities are mainly integrated into the program “Nuclear Waste Management, Safety and Radiation Research (NUSAFE)” of the Helmholtz Association (HGF) and focused on the topics “Safety of Nuclear Waste Disposal” and “Safety Research for Nuclear Reactors”...

APA, Harvard, Vancouver, ISO, and other styles

28

Macaluso, Amy L. "DIRECT AND INDIRECT EFFECTS OF ULTRAVIOLET RADIATION AND DISSOLVED ORGANIC MATTER ON FRESHWATER FLAGELLATES." Diss., Temple University Libraries, 2010. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/101579.

Full text

Abstract:

Biology<br>Ph.D.<br>The purpose of this study was to examine the direct and indirect effects of ultraviolet-B (UV-B) radiation on freshwater protists. Laboratory experiments were conducted in order to determine the importance of photoenzymatic repair (PER) of UVBinduced DNA damage in the heterotrophic nanoflagellate Paraphysomonas sp. Investigations into the combined effects of UV-B and chromophoric dissolved organic matter (CDOM) were conducted in laboratory experiments in which protist cultures were exposed to UV-B radiation in the presence and absence of water amended to a higher CDOM conce

APA, Harvard, Vancouver, ISO, and other styles

29

Corbin, Clay E. "Morphological and Ecological Evolution in Old and New World Flycatchers." Ohio University / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1081972587.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Leach, Taylor Hepburn. "Cause and Consequences of Spatial Dynamics of Planktonic Organisms in Lake Ecosystems." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1479747973843758.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Heath, Jeremy J. "Assessing the drivers of adaptive radiation in a complex of gall midges: A multitrophic perspective on ecological speciation." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1364555299.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Rose, Kevin C. "CAUSES AND CONSEQUENCES OF VARIATION IN UV TRANSPARENCY FOR FRESHWATER ECOSYSTEMS." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1304107334.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Karlberg, Louise. "Irrigation with saline water using low-cost drip-irrigation systems in sub-Saharan Africa." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Searles, Peter S. "Responses of Sphagnum and Carex Peatlands to Ultraviolet-B Radiation, and a Meta-Analysis of UV-B Effects on Vascular Plants." DigitalCommons@USU, 2000. https://digitalcommons.usu.edu/etd/6578.

Full text

Abstract:

The severity of stratospheric ozone depletion in the temperate and polar latitudes has raised concerns about the sensitivity of terrestrial vegetation and ecosystems to solar ultraviolet (UV-B) radiation. This dissertation examined the responses of plants and microbes to solar UV-B for 3 years in Tierra de! Fuego, Argentina (55° S). This region is under the influence of the Antarctic "ozone hole" during the austral spring. Additionally, a quantitative review of the UV-B literature was conducted using a set of statistical techniques known as meta-analysis. For the field studies in Tierra de! Fu

APA, Harvard, Vancouver, ISO, and other styles

35

Embaye, Kassahun. "Ecological aspects and resource management of bamboo forests in Ethiopia /." Uppsala : Dept. of Short Rotation Forestry, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s273.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Gevertz, Amanda Kate. "Differential tolerances to ultraviolet radiation and fluoranthene exposure: Comparisons between native and non-native fish of Lake Tahoe (CA/NV)." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1280515882.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Díaz, Guerra Laura. "Climate change and Mediterranean ecosystems: plant and soil responses to UV radiation and water availability before and after a perturbation." Doctoral thesis, Universitat de Girona, 2017. http://hdl.handle.net/10803/457150.

Full text

Abstract:

Taking into account the expected changes in solar UV levels, precipitation and fire regime in the Mediterranean basin, the main goal of this thesis was to evaluate the effects of UV radiation (UV-A and UV-B) and diminished water availability on the biochemical, morphological, physiological and growth 2/2 traits of common Mediterranean resprouter species (Arbutus unedo and Quercus suber), as well as on C and N pools of a Mediterranean shrubland, before and after a perturbation. As main results, responses of A. unedo plants to enhanced UV-B were mainly addressed to the reinforcement of the ant

APA, Harvard, Vancouver, ISO, and other styles

38

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.

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

39

Sudo, Masaaki. "Ecological significance of the environmental heterogeneity between the upper and lower surfaces of a single leaf as a determinant of acarine predator-prey relationship." Kyoto University, 2014. http://hdl.handle.net/2433/188750.

Full text

Abstract:

Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第18312号<br>農博第2037号<br>新制||農||1020(附属図書館)<br>学位論文||H26||N4819(農学部図書室)<br>31170<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授天野洋, 教授田中千尋, 教授松浦健二<br>学位規則第4条第1項該当

APA, Harvard, Vancouver, ISO, and other styles

40

Maestri, Renan. "Evolução morfológica na radiação dos roedores sigmodontíneos : ecologia e história evolutiva." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/163695.

Full text

Abstract:

Radiações evolutivas estão entre os eventos mais fascinantes da evolução. Grande parte da diversidade da vida, tanto de espécies como ecológica, surgiu nos breves intervalos temporais de rápida especiação que configuram as radiações. As causas ecológicas e não-ecológicas do surgimento da diversidade em radiações evolutivas, em especial nas radiações adaptativas, são tema de pesquisa há muito tempo, pelo menos desde que Darwin observou a imensa diversidade de um grupo de pássaros nas ilhas Galápagos. Desde então, as ilhas têm sido os ambientes ideais para o estudo desse fenômeno, e foi a partir

APA, Harvard, Vancouver, ISO, and other styles

41

Mikelionytė, Jurgita. "Pavienis ir kompleksinis UV-B spinduliuotės ir rūgštaus substrato poveikis skirtingo vystymosi tarpsnio sėjamajam žirniui (Pisum sativum L.)." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100614_092923-97081.

Full text

Abstract:

Ultravioletinės B spinduliuotės intensyvumo didėjimas ir rūgštėjantys dirvožemiai veikia daugelį augalų fiziologinių ir morfologinių procesų. Yra nemažai atliktų tyrimų apie pavienį šių veiksnių poveikį, tačiau kompleksinis UV-B spinduliuotės ir rūgštaus substrato poveikis augalams kol kas tyrinėtas mažai. Tyrimų tikslas – ištirti pavienį bei kompleksinį 1 ir 3 kJ m-2 d-1 UV–B spinduliuotės dozių ir rūgštaus substrato (pH 4,8) poveikį skirtingų vystymosi tarpsnių sėjamiesiems žirniams (Pisum sativum L.). Tyrimai vykdyti dviem etapais: pirmame etape tirtas pavienis UV-B spinduliuotės ir rūgšta

APA, Harvard, Vancouver, ISO, and other styles

42

Alvarez, Yareli, and Nikki L. Adams. "Transgenerational Plasticity Causes Differences in UV-Tolerance of Intertidal and Subtidal Populations of the Purple Sea Urchin, Strongylocentrotus Purpuratus." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2228.

Full text

Abstract:

Planktonic larvae of marine organisms are increasingly being exposed and required to respond to a changing physical environment. Adult sea urchins occupy both intertidal and subtidal waters and broadcast spawn gametes into the water column to contend with variable physical conditions. To answer how populations of invertebrates residing at different depths adequately prepare their offspring to cope with different levels of ultraviolet radiation (UVR), we collected adult purple sea urchins, Strongylocentrotus purpuratus, from four sites (two intertidal and two subtidal (~15 m deep)) on the centr

APA, Harvard, Vancouver, ISO, and other styles

43

Connelly, Sandra J. "Effects of Ultraviolet Radiation (UVR) Induced DNA Damage and Other Ecological Determinants on cryptosporidium Parvum, Giardia Lamblia, and Daphnia spp. in Freshwater Ecosystems." Oxford, Ohio : Miami University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1196353326.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Piedallu, Christian. "Spatialisation du bilan hydrique des sols pour caractériser la distribution et la croissance des espèces forestières dans un contexte de changement climatique." Phd thesis, AgroParisTech, 2012. http://tel.archives-ouvertes.fr/tel-00833247.

Full text

Abstract:

De nombreuses recherches se focalisent sur l'étude des aires de distribution des espèces qui se décalent vers des conditions plus adaptées à leurs besoins physiologiques sous l'effet du changement climatique. Le choix des indices utilisés pour caractériser l'écologie des espèces et définir leur vulnérabilité au réchauffement en cours est souvent conditionné par leur disponibilité, alors qu'il devrait être basé sur les connaissances en écophysiologie qui les concernent. D'autre part, la résolution spatiale parfois grossière utilisée n'est pas toujours pertinente au regard de l'échelle à laquell

APA, Harvard, Vancouver, ISO, and other styles

45

Madhuri, Sumeda. "Polyamine Transformation by Bacterioplankton in Freshwater Ecosystems." Kent State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=kent150114771851742.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Galí, Tàpias Martí. "Interactive effects of vertical mixing, solar radiation and microbial activity on oceanic dimethylated sulfur cycling." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/117383.

Full text

Abstract:

The production and subsequent emission of volatile compounds is one of the numerous ways by which microbial plankton participate in the cycling of elements and influence the Earth's climate. Dimethylsulfide (DMS), produced by enzymatic decomposition of the algal intracellular compound dimethylsulfoniopropionate (DMSP), is the more abundant organic volatile in the upper ocean. Its global emission amounts ca. 28 Tg S per year, and represents the main biogenic source of sulfur to the troposphere and about 30% of the total S emission (anthropogenic, biogenic and volcanic). Atmospheric oxidation of

APA, Harvard, Vancouver, ISO, and other styles

47

DE, SIMONE LEOPOLDO. "Ecological aspects of plants inhabiting Mediterranean cliffs. Challenges and prospects of life in vertical environments." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/443140.

Full text

Abstract:

This thesis investigates opportunities, challenges and limitations for plant ecological research in the context of Mediterranean cliffs. In particular, chasmophytic species, whose natural habitats are very steep, limestone mountain slopes in the proximity of the sea, in the Central and Western part of the Mediterranean area are considered as study objects. Studies were carried out in the coastal mountain belts of both North-western Sicily and Dianic coasts in the Valencian Community (Spain). The first chapter, entitled “The complexity of environmental factors: cliff microclimate”, investigate

APA, Harvard, Vancouver, ISO, and other styles

48

Suciu, Loredana G. "Microclimatic and Topographic Controls of Fire Radiative Energy in Southeastern Ohio." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1251136822.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Llabrés, Comamala Maria Moira. "Phytoplankton cell death induced by solar ultraviolet radiation." Doctoral thesis, Universitat de les Illes Balears, 2008. http://hdl.handle.net/10803/9374.

Full text

Abstract:

En esta tesis se ha demostrado que la radiación ultravioleta induce mortalidad en comunidades de fitoplancton de diferentes áreas del Océano Atlántico, del Mar Mediterráneo y del Océano Antártico. El fitoplancton más pequeño (pico-fitoplancton) muestra mayor sensibilidad a la radiación UV respecto al fitoplancton de mayor tamaño. Este estudio identifica que el crecimiento de las poblaciones del fitoplancton antártico está controlado por la radiación ultravioleta con inhibiciones de biomasas por encima del 80-90%. Se demuestra también que la transferencia de radicales OH, generados por la radia

APA, Harvard, Vancouver, ISO, and other styles

50

De, Simone Leopoldo. "Ecological aspects of plants inhabiting Mediterranean cliffs. Challenges and prospects of life in vertical environments." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/159877.

Full text

Abstract:

[ES] Esta tesis investiga las oportunidades, desafíos y limitaciones para la investigación en el campo de la ecología vegetal, en el contexto de los acantilados mediterráneos. En concreto, las especies casmofiticas, cuyos hábitats naturales se caracterizan por su acusada pendiente. Las laderas de las montañas de piedra caliza en la proximidad del mar, en la parte central y occidental del área mediterránea se consideran objetos de estudio. Los estudios se llevaron a cabo en los cinturones costeros de montaña de las costas del noroeste de Sicilia y la costa diánica en la Comunidad Valenciana. E

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!