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Dissertations / Theses on the topic 'Grassland experiment'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Orford, Katherine Anne. "Cascading inter-trophic interactions in the provision of ecosystem services : a grassland experiment." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.680373.

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Understanding how species' interactions impact upon the composition and functioning of ecological communities is central to conservation biology. The overarching objective of this thesis is to aid the enhancement of biodiversity and ecosystem services by investigation of bottom-up ecosystem processes in an agricultural context; specifically in conventionally managed grasslands. Grassland for livestock production is a dominant form of land-use throughout Europe. Its intensive management threatens biodiversity in agricultural landscapes. Given its extensive cover, modest increases to conventiona

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2

Andrade, Bianca Ott. "Interação solo-vegetação campestre:estudos de caso em diferentes escalas ecológicas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/148772.

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Enquanto em regiões temperadas o conhecimento sobre a relação solo-vegetação é consolidado, nos trópicos e subtrópicos é preliminar. É urgente a necessidade de se determinar os fatores abióticos que controlam padrões vegetacionais visando dar suporte a estudos de recuperação e conservação. O presente estudo analisa a relação entre fatores abióticos e vegetação campestre na forma de três artigos científicos (capítulos I, II e III) e um artigo de revisão (capítulo IV). Nos primeiros três artigos, analisou-se a variância da vegetação em diferentes escalas ecológicas; e no artigo de revisão, discu

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3

Lama, Soni [Verfasser], and W. [Akademischer Betreuer] Wilcke. "Nitrogen-15 tracing to elucidate the biodiversity-N cycle relationship in a grassland experiment / Soni Lama ; Betreuer: W. Wilcke." Karlsruhe : KIT-Bibliothek, 2020. http://d-nb.info/1223027910/34.

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4

Gonzalez, Mace Odette [Verfasser], Stefan [Akademischer Betreuer] Scheu, Mark [Gutachter] Maraun, and Nico [Gutachter] Eisenhauer. "Flooding in a grassland diversity experiment: response of microorganisms, microarthropods and predator prey interactions / Odette Gonzalez Mace ; Gutachter: Mark Maraun, Nico Eisenhauer ; Betreuer: Stefan Scheu." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://d-nb.info/1161942335/34.

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5

Fischer, Christine [Verfasser], Anke [Akademischer Betreuer] Hildebrandt, and Sabine [Akademischer Betreuer] Attinger. "Does ecosystem diversity affect soil hydraulic properties? : investigation of biotic and abiotic factors on infiltration capacity in a grassland biodiversity experiment / Christine Fischer. Gutachter: Anke Hildebrandt ; Sabine Attinger." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2014. http://d-nb.info/1053959303/34.

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6

Keidel, Lisa [Verfasser]. "The effect of elevated CO2 on soil C and N dynamics and its feedback on CO2 and N2O emissions from a temperate grassland ecosystem : results from a long-term Free Air CO2 Enrichment (FACE) experiment / Lisa Keidel." Gießen : Universitätsbibliothek, 2019. http://d-nb.info/1198674083/34.

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7

Gottfried, Gerald J., and Peter F. Ffolliott. "The Seven Springs Experimental Grassland Watersheds." Arizona-Nevada Academy of Science, 2012. http://hdl.handle.net/10150/301340.

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8

El, Habchi Atman. "Dynamique de l'azote dans le système sol peuplement au cours de la carrière de la prairie temporaire de Fetique élevée." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL067N.

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Un dispositif expérimental au champ de durée pluriannuelle a été installé à Bourg Lastic en 1986 pour étudier l'influence de l'âge de la prairie temporaire et du passé de la gestion de l'azote sur la pérennité de ses réponses annuelles aux apports azotes. Le vieillissement diminue les performances de la prairie. Entre les âges de 1 à 2 ans, il diminue a la fois la production de matière sèche, d'azote et la nutrition azotée. Au-delà de 2 ans, il diminue essentiellement la matière sèche récoltée. La principale cause du vieillissement réside dans une évolution de la morphogenèse du peuplement. L'

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9

Kossmann, Guido. "Plant functional traits and ecosystem functions in experimental grassland stands." Bayreuth : Bayreuth Center of Ecology and Environmental Research, 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=979898854.

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10

Kossmann, Guido. "Plant functional traits and ecosystem functions in experimental grassland stands." Bayreuth Bayreuth Center of Ecology and Environmental Research, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=979898854.

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11

Köhler, Iris [Verfasser], Johannes [Akademischer Betreuer] Schnyder, Margaret [Akademischer Betreuer] Barbour, and Rainer [Akademischer Betreuer] Matyssek. "The interactive effects of rising atmospheric CO2 and nutrient supply on carbon and water relations in grassland ecosystems : an analysis of stable carbon isotopes and water-use efficiency in vegetation samples from the Park Grass Experiment / Iris Köhler. Gutachter: Margaret Barbour ; Rainer Matyssek ; Johannes Schnyder. Betreuer: Johannes Schnyder." München : Universitätsbibliothek der TU München, 2013. http://d-nb.info/1033403032/34.

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12

Sørensen, L. I. (Louise Ilum). "Grazing, disturbance and plant soil interactions in northern grasslands." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514291395.

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Abstract Plants and soil organisms are closely linked. Plants are the sole source of carbon in the soil and soil organisms are responsible for recycling of nutrients, making them available for plant growth. To understand the function of a system, it is important to understand the interactions between the soil and plants. These interactions have mainly been studied in temperate areas, with few studies in the arctic and subarctic. The aim of this thesis was to investigate the effect of ecological disturbances in sub- and low-arctic grasslands on soil organisms and plant-soil feedback relationshi

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13

Dunn, Troy S. "Plant and Insect Responses to Experimental Warming in a Temperate Grassland." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1494192401311883.

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14

Scherer-Lorenzen, Michael. "Effects of plant diversity on ecosystem processes in experimental grassland communities /." Bayreuth : Bayreuther Institut für Terrestrische Ökosystemforschung (BITÖK), 1999. http://www.gbv.de/dms/bs/toc/31133928x.pdf.

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15

Marty, Jaymee Theresa. "Managing and restoring California annual grassland species : an experimental field study /." 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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16

Kossmann, Guido [Verfasser]. "Plant functional traits and ecosystem functions in experimental grassland stands / Guido Kossmann." Bayreuth : Bayreuth Center of Ecology and Environmental Research, 2006. http://d-nb.info/979898854/34.

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17

Larocque, Allen. "Untangling mechanisms behind the stability-diversity relationship in experimental grasslands." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96711.

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The mechanisms underlying the positive relationship between species richness (diversity) and temporal variability in community biomass (stability) are not well understood. Here a model incorporating density dependence and environmental and demographic stochasticity is fit to experimental data from two European and two American experimental grassland sites. The parameterization of this model allows for the calculation of an approximation of community variability which explicitly separates two mechanisms: 1. asynchrony in environmental responses, and 2. overyielding. Analysis shows that this app

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18

Reed, Lewis. "COMPETATIVE EVQUIVALENCY OF CULTIVAR AND NON-CULTIVAR DOMINANT GRASSES IN AN EXPERIMENTAL RESTORATION." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/166.

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AN ABSTRACT OF THE THESIS OF LEWIS KENNEDY REED, for the Master of Science degree in PLANT BIOLOGY presented on October 30, 2009, at Southern Illinois University Carbondale TITLE: COMPETATIVE EVQUIVALENCY OF CULTIVAR AND NON-CULTIVAR DOMINANT GRASSES IN AN EXPERIMENTAL RETORATION MAJOR PROFESSORS: Dr. Sara G. Baer and Dr. David J. Gibson Multiple population sources of species for use in prairie restoration exist, including cultivars and non-cultivars of dominant native grasses. However, little is known about the competitive equivalency of different population sources of dominant C4 grasses an

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19

Lata, Mary Elizabeth. "Variables affecting first order fire effects, characteristics, and behavior in experimental and prescribed fires in mixed and tallgrass prairie." Diss., University of Iowa, 2006. http://ir.uiowa.edu/etd/72.

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20

Rincon, Saucedo J. Emmanuel. "Experimental investigations of the ecology of bryophytes in calcareous grassland in northern England." Thesis, University of Sheffield, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338839.

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21

Hassan, Bukar. "Applications of remote sensing to arid grasslands : experimental and Nigerian case studies." Thesis, Bangor University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329703.

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22

JONES, SUSAN CATHERINE. "FORAGING PARTY AND TERRITORY SIZE OF THE DESERT SUBTERRANEAN TERMITE HETEROTERMES AUREUS (SNYDER) IN A SONORAN DESERT GRASSLAND (ARIZONA)." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184242.

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Foraging party and territory size of Heterotermes aureus (Snyder) were investigated on the Santa Rita Experimental Range south of Tucson, Arizona. A comparison of three techniques for delineating territorial extent suggested that the release and recapture of dyed termites was most useful, while agonistic behavior among termites may reflect past as well as current associations. Spatial and temporal patterns of termite attack on baits proved to be unreliable. Data obtained via the release and recapture of dyed termites indicated that most territories encompassed an area of several hundred to tho

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23

Chen, Maosi, William J. Parton, Grosso Stephen J. Del, et al. "The signature of sea surface temperature anomalies on the dynamics of semiarid grassland productivity." WILEY, 2017. http://hdl.handle.net/10150/626547.

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We used long-term observations of grassland aboveground net plant production (ANPP, 19392016), growing seasonal advanced very-high-resolution radiometer remote sensing normalized difference vegetation index (NDVI) data (1982-2016), and simulations of actual evapotranspiration (1912-2016) to evaluate the impact of Pacific Decadal Oscillation (PDO) and El Nino-Southern Oscillation (ENSO) sea surface temperature (SST) anomalies on a semiarid grassland in northeastern Colorado. Because ANPP was well correlated (R-2 = 0.58) to cumulative April to July actual evapotranspiration (iAET) and cumulative

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24

Bolioli, Anaclara Guido. "Suscetibilidade de comunidades campestres à invasão por plantas exóticas invasoras." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/141815.

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O objetivo geral desta tese foi examinar diferentes 1 questões associadas ao 2 processo de invasão de plantas para investigar os mecanismos, impactos e 3 medidas de recuperação da comunidade vegetal, abordando diferentes estratégias 4 metodológicas que incluem estudos observacionais, experimentos de remoção e 5 uma revisão metodológica. Os resultados do Capítulo 1 mostraram como as 6 relações entre condições climáticas e estrutura da paisagem podem determinar o 7 grau de invasão de plantas na escala regional. Observou-se que os padrões de 8 invasão dos campos sulinos estão principalmente relac

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25

Joner, Fernando. "Redundância funcional em comunidades campestres." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/15810.

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Os campos do Rio Grande do Sul apresentam grande biodiversidade, beleza cênica e um importante recurso para a economia do estado, cuja principal atividade é a pecuária. O manejo inadequado do campo traz conseqüências graves para a diversidade e sustentabilidade desse ecossistema através da perda de espécies promovida pelo pastejo excessivo. Entretanto, algumas espécies desempenham as mesmas funções nos ecossistemas, logo a perda de algumas espécies pode não afetar o seu funcionamento, pela compensação de outras espécies do mesmo grupo funcional. Esta redundância funcional aumentaria a confiabi

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26

Backhaus, Sabrina [Verfasser], and Anke [Akademischer Betreuer] Jentsch. "Climate change in experimental ecology - The impact of warming and drought on key European tree, heath, and grassland species / Sabrina Backhaus. Betreuer: Anke Jentsch." Bayreuth : Universität Bayreuth, 2014. http://d-nb.info/1065726082/34.

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27

GISOLO, DAVIDE. "Water, carbon and energy fluxes on grasslands of Western Alps: methodological issues, experimental data, hydrological modelling and atmospheric boundary layer phenomena." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2957761.

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28

Hanoteaux, Sven [Verfasser], and Katja [Akademischer Betreuer] Tielbörger. "The role of indirect plant-plant interactions via shared pollinators : a combined experimental and theoretical study in species-rich temperate grasslands / Sven Hanoteaux ; Betreuer: Katja Tielbörger." Tübingen : Universitätsbibliothek Tübingen, 2014. http://d-nb.info/1162971436/34.

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29

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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30

Gaudnik, Cassandre. "Impacts des dépôts d'azote atmosphérique sur la végétation des prairies acides du domaine atlantique français : approche comparative et expérimentale." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14407/document.

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Afin d’appréhender l’impact des dépôts d’azote atmosphérique sur les écosystèmes,nous nous sommes intéressés à un écosystème d’intérêt patrimonial : les prairies acides duViolion caninae. Au sein de ces prairies, les objectifs étaient de (i) quantifier les variationsfloristiques temporelles et spatiales le long du domaine atlantique français et de déterminer siles variables de dépôts d’azote et du climat expliquaient ces patrons, (ii) comprendre lesprocessus mis en jeu lors de l’enrichissement en azote au niveau de la végétation et du sol, et(iii) examiner les moyens potentiels de conservation

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31

Lindahl, Therese. "Strategic and environmental uncertainty in social dilemmas." Doctoral thesis, Stockholm : Economic Research Institute, Stockholm School of Economics (EFI), 2005. http://web.hhs.se/efi/summary/674.htm.

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32

Gonzalez, Mace Odette. "Flooding in a grassland diversity experiment: response of microorganisms, microarthropods and predator prey interactions." Doctoral thesis, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E431-6.

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33

"The Effects of Interannual Precipitation Variability on the Functioning of Grasslands." Doctoral diss., 2014. http://hdl.handle.net/2286/R.I.27410.

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abstract: Climate change will result not only in changes in the mean state of climate but also on changes in variability. However, most studies of the impact of climate change on ecosystems have focused on the effect of changes in the central tendency. The broadest objective of this thesis was to assess the effects of increased interannual precipitation variation on ecosystem functioning in grasslands. In order to address this objective, I used a combination of field experimentation and data synthesis. Precipitation manipulations on the field experiments were carried out using an automated rai

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34

Ebeling, Anne. "Community structure and interaction webs of flower-visiting and cavity-nesting insects along an experimental plant diversity gradient." Doctoral thesis, 2008. http://hdl.handle.net/11858/00-1735-0000-0006-B01B-C.

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35

Strecker, Tanja. "The role of plant diversity, plant functional groups, and mineral nitrogen for soil microbial functioning and soil mesofauna in temperate grassland." Doctoral thesis, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-15A7-7.

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36

Fynn, Richard Warwick Sinclair. "Determinants of community composition and diversity in KwaZulu-Natal mesic grasslands : evidence from long-term field experiments and pot and plot competition experiments." Thesis, 2003. http://hdl.handle.net/10413/10177.

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A predictive understanding of plant community response to various environmental influences (e.g. type, timing and frequency of disturbance, site productivity, fertilization, etc.) is a general goal of plant ecology. This study sought to further understanding of mesic grassland dynamics in KwaZulu-Natal using long-term field experiments (> 50 years) and short-term pot and plot competition experiments. The specific objectives were to: 1) examine the effects of long-term burning of grassland on soil organic matter content because of its potential impact on nitrogen cycling and community compositi

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37

Flinker, Raquel Henriques. "Modeling of soil moisture dynamics of grasslands in response to CO₂ and biodiversity manipulations at BioCON." Thesis, 2014. http://hdl.handle.net/2152/28232.

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Increasing atmospheric carbon dioxide (CO₂) leads to global warming. This can have several impacts on climate and on plant biodiversity, and has been the topic of many studies. The objective of this thesis was to understand the effects of higher atmospheric CO₂ on soil moisture dynamics in the grasslands of central Minnesota using detailed hydrologic modeling to explain previous experimental observations at the BioCON site, a free-air CO₂ enrichment experiment. The hydraulic properties and texture of soils collected from BioCON were determined in the laboratory through grainsize analysis and

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38

Schumacher, Evelyn. "The impact of ants on the aboveground and belowground ecological network - field studies in a grassland and experiments with microcosms." Thesis, 2010. http://hdl.handle.net/11858/00-1735-0000-0006-ADF4-8.

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39

Vacková, Nikol. "Úloha ochozů volně žijících kopytníků ve vegetaci teplomilných trávníků." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-353837.

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Animals affect vegetation in many different ways. In this thesis we have focused on the impact of wild ungulates in the Czech Republic (wild boar, red deer, sika deer, roe deer). These animals affect vegetation with grazing, defoliation, defecation, browsing and other activities. We decided to study the effect of browsing. The animal trails are formed by browsing animals. These trails can be easily recognized due to long-term browsing. They are especially caused by trampling, which affects vegetation in many ways. The aim of this study is to determine how the vegetation of dry-grasslands (Fest

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40

Monadjem, A. "An experimental investigation of the effects of supplementary food and ground cover on small mammal population dynamics and community structure in a Swaziland grassland." Thesis, 1997. http://hdl.handle.net/10413/10313.

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The primary aim of this study was to investigate the role of food supply and ground cover on the community structure, population dynamics and demography of terrestrial small mammals in a subtropical grassland. This aim was achieved through a series of food supplementation and cover manipulation experiments conducted at eKundizeni Farm near Matsapha, Swaziland, over a 28 month period. The effects of five different diets on the rodent Mastomys natalensis were investigated in the laboratory, and the results showed that rolled oats and rabbit pellets were suitable for growth and reproduction in th

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41

Austenfeld, Marcel [Verfasser]. "Spatio-temporal analysis of vegetation dynamics of selected successional stages of dry acidic grasslands : experimental studies and model simulations / vorgelegt von Marcel Austenfeld." 2009. http://d-nb.info/1002592119/34.

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42

West, James Alexander. "An assessment of the effect of season of grazing, stocking rate and rainfall on the dynamics of an arid rangeland on the west coast of South Africa." 2005. http://hdl.handle.net/10413/5522.

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A grazing trial investigating the effect of season of grazing and stocking rate initiated at the Nortier Experimental Farm in 1988 provided an opportunity to assess the response of the veld to both grazing and environmental influences in an arid environment. The trial allowed an assessment of the relative influence of internal (equilibrium) and external (non-equilibrium) forces on the dynamics of an arid rangeland. This study involved the analysis of a nine year data set stretching from 1988 to 1996 and served to provide evidence supporting the existence of an equilibrium/non-equilibrium conti

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43

Tiede, Julia. "Plant diversity and landscape-scale effects on multitrophic interactions involving invertebrates." Thesis, 2017. http://hdl.handle.net/11858/00-1735-0000-002E-E4F6-C.

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