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Dissertations / Theses on the topic 'Community’s structure'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Soldatelli, Volnei Flávio. "Avaliação da comunidade fitoplanctônica em lagoas de estabilização utilizadas no tratamento de efluentes domésticos : estudo de caso - ETE - UCS." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/10953.

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Este trabalho teve por objetivo relacionar a estrutura da comunidade fitoplanctônica com as variáveis físicas, físico-químicas e químicas das Lagoas de Maturação da Estação de Tratamento de Esgotos da Universidade de Caxias do Sul, no período de um ano. Foram considerados os atributos da comunidade (riqueza, composição, densidade, diversidade e eqüitabilidade), suas relações com as variáveis abióticas (temperatura do ar e da água, turbidez, transparência da água, pH, condutividade elétrica, OD, DBO5 total e solúvel, DQO total e solúvel, sólidos suspensos totais e voláteis, nitrato, nitrito, ni

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2

Ries, Mackenzie Lynn. "The Effect of Salinity on Soil Microbial Community Structure." Thesis, North Dakota State University, 2020. https://hdl.handle.net/10365/31807.

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Soil salinity is a widespread problem that affects crop productivity. We expect that saline soils also have altered microbial community structure, soil food webs and related soil properties. To test this, we sampled field soils across four farms in eastern North Dakota that host salinity gradients. We evaluated microbial biomass carbon, phospholipid fatty acid analysis and nematode counts in moderately saline and low saline soils. Additionally, we measured soil properties that represent potential food sources and habitat characteristics that influence microbial communities. We found higher mic

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3

McClees, Whitney Elizabeth. "Anthropogenic Effects on the Fouling Community: Impacts of Biological Invasions and Anthropogenic Structures on Community Structure." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3883.

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Coastal anthropogenic infrastructure has significantly modified nearshore environments. Because these structures often have a strong association with shipping as would be found in ports and harbors, they have been identified as invasion hotspots. Due to propagule pressure from shipping and recreational boating and suitable uncolonized substrate that provides a refuge from native predators, a greater number of non-native species have been found on these structures compared to nearby natural substrate. The mechanisms that limit the spread of non-native species from anthropogenic structures to na

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4

Berg, Sofia. "Community Robustness Analysis : Theoretical Approaches to Identifying Keystone Structures in Ecological Communities." Doctoral thesis, Linköpings universitet, Teoretisk Biologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-88055.

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Most of the world’s ecosystems suffer from stress caused by human activities such as habitat destruction, fragmentation, overexploitation of species and climate change. These factors affect the reproduction and/or survival of individual species as well as interactions between species in ecological communities. Forthcoming effects of this are altered abundances, direct species loss, and indirect cascading extinctions, with yet largely unknown consequences on community structure and functioning. Today, biodiversity loss is of global concern since human society and welfare depend upon resources a

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5

Swedo, Barbara L. "Plant-microbe associations controls on soil bacterial community structure and consequences for aboveground plant communities /." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3337259.

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Thesis (Ph.D.)--Indiana University, Dept. of Biology, 2008.<br>Title from PDF t.p. (viewed on Jul 28, 2009). Source: Dissertation Abstracts International, Volume: 69-12, Section: B, page: 7260. Adviser: Heather L. Reynolds.

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6

Dryden, Charlie. "Habitat structural complexity of Caribbean coral reefs and its relationships with fish community structure." Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/3574.

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Habitat structural complexity (HSC) is a key component of natural ecosystems. It helps to describe the morphological characteristics of the three-dimensional space that floral and faunal communities exist within. The physical structure can have a profound influence on the associated diversity and functioning of the ecosystem. This thesis is a macroecological study of Caribbean coral reef HSC and how changes in it might influence associated fish communities. An assessment of contemporary reef HSC in 15 countries and its relationship with spatial, environmental and anthropogenic variables, ident

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7

Goerrissen, Jan. "Grassland birds in California : an investigation into the influence of season, floristic composition, and artificial structures on avian community structure /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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Thesis (Ph. D.)--University of California, Davis, 2005.<br>"June 2005"--Leaf 1. Degree granted in Ecology. Includes bibliographical references. Also available via the World Wide Web. (Restricted to UC campuses)

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8

Steers, Helen. "Comparative analysis of community structure." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401076.

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9

Cotgreave, Peter. "Comparative studies of community structure." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306598.

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10

Sarzynska, Marta. "Spatial community structure and epidemics." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:fd841775-0fdb-4c95-a1a8-01065ada1838.

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Networks are a useful quantitative representation for complex systems of interacting entities arising in fields such as biological, physical and social sciences. A network representation provides a degree of simplification while capturing key connectivity patterns. This thesis focuses on two main themes: the study of community structure, an important mesoscopic feature of many networks, and its application to study spatiotemporal spread of infectious diseases. Community detection seeks to partition a network into dense sets of nodes that are connected sparsely to other dense sets. The notion o

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11

Anzick, Michael A. "Community structure and criminal victimization." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/43284.

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<p>This research has attempted to better understand property crime victimization by studying the important role of community structures, while controlling for the following demographic variables: age, gender, race, and income. Three different types of analyses were used: (1) bivariate analysis; (2) multivariate analysis, and (3) path analysis. Bivariate analysis was used in order to gain a better understanding of the following zero-order relationships: (1) the relationship between the structural characteristics of communities and property crime victimization; (2) the relationship between the s

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12

Simonich, Daniel Patrick. "Language as structure for memory communities." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/simonich/SimonichD1209.pdf.

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Architecture is a language - an intense cultural and historical force. This thesis will expound how architecture reflects, and contributes to, an identity via spoken language and diachronic cultural signals. While our built world is not easily reduced to literally grammatical morphemes, architecture offers equally meaningful, albeit abstract, messages of semiotic importance. I believe it is our individual and collective rendering of language that affords the promise of multiple understandings and creative solutions. Yet, the messages presented and perceived by our designed surroundings, at hom

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13

Li, Yuh-Yuh. "Social Structure, Social Control, and Crimein in Rural Communities: A Test of Social Disorganization Theory." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1237993548.

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14

Hernandez, Jennifer Lynn. "Wild Bee Communities in Grassland Habitats of the Central Valley of California| Drivers of Diversity and Community Structure." Thesis, University of California, Berkeley, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3616464.

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<p> Recent research has revealed a trend of decreasing pollinator abundance and diversity in regions throughout the world. This highlights the need to understand factors influencing patterns in bee community structure and the drivers of bee diversity and abundance patterns. My dissertation uses several methods to determine factors structuring bee communities with regards to diversity and abundance. I selected 10 sites in different regions of the Central Valley of California that differ with regards to land use and floral diversity. Bee communities at each site were sampled for diversity, ab

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15

Williams-Newball, Takieya Iesha. "Domain, Community and Practice| An Empirical Investigation of the Relationship Between Communities of Practice and Professional Identity Among Veterinarians." Thesis, The George Washington University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3615768.

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<p> This exploratory study examined the relationship between communities of practice and professional identity. The purpose of the study was to quantitatively examine the extent to which there were relationships between Wenger's dimensions of community of practice (domain, community, and practice) and professional identity among veterinarians. This was accomplished by conducting a survey study using correlation analysis. The research question was as follows: To what extent are there relationships between Wenger's dimensions of community of practice (domain, community, and practice) and profes

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16

Friedman, Jonathan Ph D. Massachusetts Institute of Technology. "Microbial adaptation, differentiation, and community structure." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81751.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Computational and Systems Biology Program, 2013.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 112-119).<br>Microbes play a central role in diverse processes ranging from global elemental cycles to human digestion. Understanding these complex processes requires a rm under- standing of the interplay between microbes and their environment

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17

Morse, Ricardo Stuart. "Community Learning: Process, Structure, and Renewal." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/27472.

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Community renewal is a dominant theme in American society today. It has been said that public administration could and should be a leader in the community renewal movement, yet for the most part the field of public administration fails to â getâ community. This study advances and explores a concept of community learning as part of a broader effort to better understand what a community perspective means for public administration theory and practice. The contributions of this study are two-fold. First, a concept of community learning is drawn from a variety of literature streams that share an

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18

Xi, Wenna. "Community Structure in Co-Location Networks." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1566156023255678.

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19

Stonier, Shirley Ann. "Women in a community power structure." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25525.

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Feminist researchers have noted the invisibility of women in power structure studies to date and have suggested that it is the methods of main-stream social science research that systematically obscure women's political activities. The primary objective of this study is to identify and describe the women who participate in the public decision-making process at the community level, as a test of the suggestion that there is a bias in the methods, and as a way of beginning to correct the present lack of knowledge about women's contributions to community politics. There is, however, no accepted t

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20

Mawdsley, David. "Community structure in animal social networks." Thesis, University of Bath, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436868.

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In this thesis the ideas of network analysis are applied to systems of group living animals. A method of constructing a network of associations by combining group memberships is presented. Methods of filtering the network according to association strength are discussed. . The detection and understanding of community structure within animal social networks forms an important part of this thesis. By allowing the researcher to study (and verify the statistical significance of) intermediate scale structure in the network an insight into the biological processes which may motivate the structure can

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21

Anderson, Barbara J., and n/a. "Something to do with community structure : the influence of sampling and analysis on measures of community structure." University of Otago. Department of Botany, 2006. http://adt.otago.ac.nz./public/adt-NZDU20070215.150836.

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Diversity indices confound two components: species richness and evenness. Community structure should therefore be evaluated by employing separate measures of the number of species and their relative abundances. However, the relative abundances of species are dependent on the abundance measure used. Although the use of biomass or productivity is recommended by theory, in practice a surrogate measure is more often used. Frequency (local or relative) and point-quadrat cover provide two objective measures of abundance which are fast, less destructive and avoid problems associated with distinguishi

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22

Osnas, Erik E. "Temporal and spatial structure of waterfowl communities." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ30815.pdf.

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23

Lai, Mirko. "On Language and Structure in Polarized Communities." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/119116.

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[ES] En esta tesis abordamos el problema de la detección de las opiniones (stance detection, SD) en las redes sociales, centrándose en los debates políticos polarizados en Twitter. La SD consiste en determinar automáticamente si el autor de una publicación está a favor o en contra de un objetivo de interés, o si no se puede inferir la opinión. Nos ocupamos de temas políticos como las elecciones políticas y los referendos y, como resultado, los objetivos son tanto personas como referendos. También exploramos las comunicaciones que tienen lugar en estos debates polarizados, arrojando luz sobre l

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24

Dominici, Arosemena Arturo. "Community structure and patterns of diversity in reef fish communities in the tropical western Atlantic and tropical eastern Pacific." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=98122167X.

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25

Osborn, Dawn Alexandra. "Rocky intertidal community structure on different substrates /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2005. http://uclibs.org/PID/11984.

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26

White, William Patrick. "Soil moisture, fire, and tree community structure." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1301936875.

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27

Bennett, Laura. "Community structure detection in complex biological networks." Thesis, King's College London (University of London), 2013. https://kclpure.kcl.ac.uk/portal/en/theses/community-structure-detection-in-complex-biological-networks(4a2e4275-b4c5-4598-85c3-cdfdbc213581).html.

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With the advent of high-throughput technology there has been a large increase in the availability of biological data, such as interaction data of genes, proteins and metabolites. It is therefore necessary to develop ways in which these data can be efficiently modelled and analysed. Networks over a natural modelling framework for complex biological systems and as such, network theory and related computational approaches have proven important in bioinformatics. A particular facet of network theory that has been employed to analyse biological networks is community structure detection. Community s

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28

Hagley, Karen Jane. "Microbial community structure in sports turf soils." Thesis, Royal Holloway, University of London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402548.

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29

Mello, Maeve Brito de. "Studies on the structure of grassland spider communities." Thesis, University of Sunderland, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241504.

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30

Marsters, J. R. "The structure and dynamics of saxicolous lichen communities." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234778.

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31

Fuller, R. J. "Composition and structure of bird communities in Britain." Thesis, University of London, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363417.

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32

Pearse, William D. "The phylogenetic structure of ecological communities under change." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/17942.

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Darwin first noticed that closely-related species tend to be more similar, and that this brings them into more severe competition with one another. In my thesis, I use information on the phylogenetic relatedness of species to help understand the processes that structure ecological assemblages. I start with a review of how phylogenetic structure is useful to ecologists (chapter one), and the methodological tools available to study it (chapter two). I then re-analyse the Barro Colorado Island dataset, finding shifts in phylogenetic structure across extremely fine spatial and phylogenetic scales

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33

Cook, Kathryn B. "Epipelagic zooplankton community structure : spatial patterns in abundance, species composition and size structure." Thesis, Swansea University, 2001. https://cronfa.swan.ac.uk/Record/cronfa42911.

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34

Levy, Ruth. "Community structure of ants in Brunei rain forest." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240586.

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35

Owens, Elis M. "Fungal community structure and functioning in decomposing wood." Thesis, Cardiff University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375959.

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36

Badylak, Susan. "Phytoplankton community structure in Tampa Bay, Florida U.S.A." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0013337.

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37

Datta, Manoshi Sen. "Microbial community structure and dynamics on patchy landscapes." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104464.

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Thesis: Ph. D., Massachusetts Institute of Technology, Computational and Systems Biology Program, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 139-156).<br>Microbes are tiny metabolic engines with large-scale effects on industry, the environment, and human health. Understanding how the micron-scale actions (and interactions) of individual microbes give rise to macro-scale consequen

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38

Fayle, Tom Maurice. "Ant community structure in a rain forest microcosm." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611618.

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39

Eriksson, Anton. "Interactive visualization of community structure in complex networks." Thesis, Umeå universitet, Institutionen för fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-148551.

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Several applied sciences model system dynamics with networks. Since networks often contain thousands or millions of nodes and links, researchers have developed methods that reveal and high- light their essential structures. One such method developed by researchers in IceLab uses information theory to compress descrip- tions of network flows with memory based on paths rather than links and identify hierarchically nested modules with long flow persistence times. However, current visualization tools for navigat- ing and exploring nested modules build on obsolete software that requires plugins and

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40

Anderson, B. C. "Processes affecting the community structure of Dukuduku forest." Thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/26350.

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41

Dewsbury, Bryan. "The Ecology and Economics of Seagrass Community Structure." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1237.

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Coastline communities have experienced a marked increase in human populations over the last few decades. This increase in population places disproportionate pressure on coastal ecosystems to provide economic services to support local economies. At the same time, overuse of these services can aid in the destruction of the ecosystems responsible for them. Seagrass ecosystems are mainly found near coastlines, and are typically a chief provider of some of these economic goods and services. Many previous studies have documented the ecological functions of this seagrasses. Unfortunately, our increas

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42

Apaliyah, Godwin Tayese. "An Analysis of the Effects of Program Structure and Content on Outcomes of Community Leaderhip Education Programs." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1299607608.

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McCloskey, Moya. "Field management and the structure of arable weed communities." Thesis, Anglia Ruskin University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259464.

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Hooper, Garnet James. "Effects of algal structure on associated motile epifaunal communities." Thesis, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268881.

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45

Laurich, Ryan Michael. "AN ECOLOGICAL ASSESSMENT OF OHIO FISH COMMUNITIES AND HABITAT STRUCTURE: EXAMINING THE RELATIONSHIP BETWEEN COMMUNITY COMPOSITION AND HABITAT QUALITY FOR AQUATIC ECOSYSTEMS." Miami University / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=miami1073340050.

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46

Jaeger, Andrea L. "Invasive species impacts on ecosystem structure and function." Diss., Connect to online resource - MSU authorized users, 2006.

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47

Sharp, Ken. "A Study of Community College Cost Structures." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/194719.

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Institutions of higher education, including community colleges are subject to increased pressure to reduce their costs. The purpose of this study is to determine what factors relate to community college costs, to determine if community colleges experience economies of scale, and how both costs and economies of scale are related to the 2005 Carnegie classifications.The data used in this study was derived from the National Center for Education Statistics (NCES) Integrated Post Secondary Data System (IPEDS). Data was selected for odd years from the 1987 through 2003 data sets. Average cost-per

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Ewing, Toby. "Community development and capacity building A case study of Monte Verde, Costa Rica /." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2007. http://wwwlib.umi.com/cr/syr/main.

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Saenz, Daniel. "Ecological correlates of anuran breeding activity and community structure." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1575.

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Multiple ecological factors can simultaneously affect species activity and community structure. The goal of my dissertation was to examine the effects of abiotic factors, biotic factors, and succession on anuran communities. I took a three pronged approach dividing the study into three major chapters. First I focused on abiotic factors that affect anuran breeding activity. I found that weather, rainfall and temperature affect the breeding activity of each species differently, and species in my study area can be placed into 5 different groups based on their association with weather and season:

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Richter, Boix Alexander. "Structure of an Anuran community in a Mediterranean area." Doctoral thesis, Universitat de Barcelona, 2006. http://hdl.handle.net/10803/798.

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The thesis research concerned evolutionary ecology and community ecology of amphibians in two different areas of a Mediterranean region. The goal of the research was to test how anuran species coexist along a lentic freshwater gradient from ephemeral to permanent ponds. The community structure across the gradient has been explained by different ecological models, based on different trade-offs and inherent properties of the species. To test the different models he used four-year field surveys of communities to characterise pond-breeding habitats (with respect to temporariness, predator abundanc

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