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Tesis sobre el tema "Plant conservation"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Dalrymple, Sarah. "Rarity and conservation of Melampyrum sylvaticum." Thesis, University of Aberdeen, 2006. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=128181.

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<i>Melampyrum sylvaticum</i> (small cow-wheat) is a hemiparasitic annual of boreal-montane regions of Europe. The Species Action Plan recommended that in addition to protecting extant populations, by 2010 there should be an additional five populations that have been created with the aim of enhancing greater genetic diversity of the species. Consequently this project was set up in order to provide the ecological knowledge required to meet such targets. There are various management options available to conservationists looking to prevent <i>Melampyrum sylvaticum’s</i> extinction from the UK bu

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2

Scobie, Andrew Rutherford. "Understanding the causes of reproductive failure in two rare Scottish plants, Linnaea borealis L. and Spiranthes romanzoffiana Cham. and the implications for future conservation management." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources. Restricted: no access until Dec. 21, 2011, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=59437.

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3

Baena, Susana. "Remotely sensed solutions for plant diversity conservation." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/51765/.

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Global change is happening at a staggering pace and the impact that change is having in the loss of plant biodiversity is unprecedented. The latest reports on the state of the world’s plants indicate that they face intensifying threats and biodiversity loss on a global scale. However, this rapid global change is also bringing extraordinary technological developments to all scientific fields. Earth Observation by Remote Sensing is undergoing a fast expansion and its capacity to monitor and analyse global environmental changes and their impact in biodiversity is ever growing. This research analy

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4

Orozco, Barbara Ayala. "Maintaining the drivers of tropical plant diversity : plant disease in conservation practice /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2008. http://uclibs.org/PID/11984.

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5

Wong, Kwong-chiu Alfred. "Conservation genetics of Hong Kong wild orchids /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B2035793X.

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6

Ng, Sai-chit. "Hong Kong's rhododendrons : ecology, population genetics and conservation /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21482743.

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7

Cheung, W. T. "The conservation of plants in Hong Kong /." View the Table of Contents & Abstract, 2005. http://sunzi.lib.hku.hk/hkuto/record/B3473742X.

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8

Swarts, Nigel. "Integrated conservation of the rare and endangered terrestrial orchid Caladenia huegelii H.G. Reichb /." Connect to this title, 2007. http://theses.library.uwa.edu.au/adt-WU2008.0044.

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9

Vorster, Liesl. "Current status and impact (2004-2015) of indigenous ungulate herbivory on the vegetation of Sanbona Wildlife Reserve in the Little Karoo." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25523.

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Game farming is becoming more popular in southern Africa and the introduction of large indigenous ungulates into confined enclosed areas could alter plant communities and ecosystem processes. This is of particular concern in semi-arid rangelands of the Succulent Karoo where the evolutionary history of grazing is not clear and the compatibility of large herbivores in confined areas remains to be demonstrated. The establishment of Sanbona Wildlife Reserve, a 54 000 hectare private game reserve in the Little Karoo, which converted from livestock farming to game farming, allows an opportunity to s

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10

Ong, Laura E. "Conservation of pathogen recognition mechanisms in different plant species." [Bloomington, Ind.] : Indiana University, 2006. 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:3215189.

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Thesis (Ph.D.)--Indiana University, Dept. of Biology, 2006.<br>Source: Dissertation Abstracts International, Volume: 67-04, Section: B, page: 1764. Adviser: Roger W. Innes. "Title from dissertation home page (viewed June 20, 2007)."

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11

Smith, Wynet. "The use, abundance and conservation of woody species in the Batemi Valley, northwestern Tanzania /." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69667.

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The Batemi are an agropastoral group who inhabit a semi-arid area in Northwestern Tanzania. The group lives a traditional subsistence lifestyle and are therefore dependent on the resources that surround them. This study: (1) investigates their use of woody vegetation; (2) studies the abundance and distribution of woody vegetation in the area; and (3) experiments with assigning use values to species and with employing these use values to identify conservation priorities. The Batemi utilize over 100 woody species, in 37 families' and 58 genera, from the environment surrounding their villages for

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12

Dawson, Wayne. "Explaining alien plant invasions using Amani Botanical Garden in NE Tanzania." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources. Restricted: no access until June 8, 2010, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=26082.

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13

Sharma, Jyotsna. "Mycobionts, germination, and conservation genetics of federally threatened Platanthera praeclara (Orchidaceae) /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3060142.

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14

Tarrant, Valerie M., and valerie tarrant@deakin edu au. "Melbourne's indigenous plants movement: The return of the natives." Deakin University. School of History, Heritage and Society, 2005. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20061207.113857.

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This thesis examines Greater Melbournes indigenous plants movement from the 1930s to the early twenty first century. It demonstrates the important scientific and educational role of the public intellectual, Professor John Turner, and of the Melbourne University Botany School which he led for thirty five years. The case study of the movement within the City of Sandringham and its successor the City of Bayside reveals how the inhabitants of an urbanised are responded to threats to the indigenous trees and wildflowers of their neighbourhood, stimulating botanists to assist them and using polit

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15

Cheung, W. T., and 張偉滔. "The conservation of plants in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45013032.

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16

Athorn, Marie. "Conservation value of constructed reedbeds." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/52317/.

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Natural reedbed habitat in the UK has suffered severe declines in the last few centuries. With only 5,000 ha remaining and much of what remains is highly fragmented and degraded. The loss and fragmentation of reedbed habitat in the UK has had a profound effect on the species associated with it. Constructed reedbeds are artificial wetlands dominated by Phragmites australis designed to treat wastewater. They have been widespread in the UK because they are perceived to be a green solution, but their conservation value has never been assessed. This project aims to determine how they contribute to

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17

Kreivi, M. (Marjut). "Conservation genetics and phylogeography of endangered boreoarctic seashore plant species." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514290190.

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Abstract The amount and distribution of genetic diversity are likely to affect the evolutionary potential of a species. When feasible and cost-effective policies for management and monitoring of endangered populations or species are planned, knowledge of the spatial genetic structure and the type of population dynamics is of great concern. In this thesis the genetic diversity and population structures of two endangered arctic plant species was examined on different geographical scales in Northern Europe. The species were Siberian primrose (Primula nutans) and pendant grass (Arctophila fulva),

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18

Griffiths, Christine Jane. "Conservation and restoration of Mauritian plant communities using taxon substitutes." Thesis, University of Bristol, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.544321.

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19

Siegwarth, Mark. "Boyce Thompson Arboretum and the Global Strategy for Plant Conservation." University of Arizona (Tucson, AZ), 2011. http://hdl.handle.net/10150/556782.

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20

Ng, Sai-chit, and 吳世捷. "Hong Kong's rhododendrons: ecology, population genetics and conservation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B43894343.

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21

Mader, André Derek. "The demography of Acacia stands on the Hluhluwe-Umfolozi Game Reserve." Bachelor's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/24831.

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Little is known about the demographics of the genus Acacia in Africa, despite its prominence and the economic and environmental importance of this group. The demographics and species composition of stands of four different Acacia species was investigated in the Hluhluwe-Umfolozi Game Reserve in northern Kwazulu-Natal in order to determine whether stands were self-replacing, or whether other Acacia species were invading them. Soil and stand density as well as the density and composition of the grass layer were investigated in order to determine whether any of these affected Acacia demography an

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22

Saeed, Auday Esmail. "Integrated design of chemical plants with energy conservation (the design of an energy efficient styrene plant)." Thesis, University of South Wales, 1990. https://pure.southwales.ac.uk/en/studentthesis/integrated-design-of-chemical-plants-with-energy-conservation-the-design-of-an-energy-efficient-styrene-plant(27fb4dfc-5ed8-40ff-a747-c302c43415da).html.

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Energy consumption is one of the main areas in the study of chemical process design. It is usually referred to as the critical element that is continuously needed for running a chemical process, and is daily effected by the prices of energy. Therefore, poor designs which are not energy integrated normally lead to less profit due to high consumption of energy. These simple economics are the reason for tackling the area of energy integration in process design. A styrene production process is taken to be the model process for carrying out the design work incorporating the various energy integrati

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23

Levy, Foster, and James T. Donaldson. "Morphology, Geographic Distribution, and Conservation of the Southern Appalachian Endemic." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/5450.

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Taxonomic recognition of Solidago lancifolia (Torrey & A. Gray) Chapman and diagnostic characters used for identification have vacillated among floras and treatments. Fieldwork greatly expanded the specimen base in US herbaria, extended the known range in Tennessee, and identified new occurrences in North Carolina and Virginia. A morphometric analysis of herbarium specimens identified qualitative and quantitative characters unambiguously diagnostic for S. lancifolia. These included the presence of glands on the phyllaries; long, wide-diameter rhizomes; thick stems; and a long pappus on disk fl

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24

Mosime, Bonolo. "In vitro conservation of selected endangered plant species indigenous to the Cape Floristic Region, South Africa." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2343.

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Thesis (MTech (Horticulture))--Cape Peninsula University of Technology, 2016.<br>This study focused on optimising four types of in-vitro conservation methods, namely: 1), micropropagation, 2) in-vitro slow growth, 3) seed germination and 4) cryopreservation for selected endangered plant species indigenous to the Cape Floristic Region. It is one of the targets set by United Nations millennium development goals, to integrate different conservation measures in order to preserve plant diversity and mitigate losses of genetic diversity. Therefore this study uses Phalaenopsis hybrids as a trial spec

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25

Wheat, Nicola M. "Patterns of parasitism and emergence in the gall midge Dasineura Dielsii (Diptera: Cecidomyiidae) : a biological control agent of Acacia cyclops in South Africa." Bachelor's thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/25722.

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Acacia cyclops A. Cunn. ex G. Don is an invasive alien plant that invades fynbos and coastal dunes. Several acacia species are grown commercially in South Africa and this has limited biocontrol agents to those that reduce only reproductive capacity. Dasineura dielsii was released in 2002 as a biocontrol agent for A. cyclops. This gall-forming midge destroys inflorescences and prevents seedpods from forming, but allows continued harvesting. Insects overwinter as larvae within their galls. This study examined the levels of parasitism experienced by dormant D. dielsii larvae, as well as the trigg

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26

Lam, Chi-chi Chris. "Tree stories of Hong Kong." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B24534444.

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27

Irmak, Suat. "New irrigation-plant production system for water conservation in ornamental nurseries." [Gainesville, Fla.] : University of Florida, 2002. http://purl.fcla.edu/fcla/etd/UFE1001153.

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28

Sari, Ugur. "Pollen polymorphism in Magnoliaceae and conservation of plant male germline regulators." Thesis, University of Leicester, 2015. http://hdl.handle.net/2381/37923.

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In flowering plants twin sperm cells are produced by the male gametophyte to enable double fertilization, which is of vital importance for plant fertility. The process of male gametogenesis depends upon relatively poorly understood mechanisms of gamete cell production, but the male germline-specific R2R3 MYB transcription factor DUO1 is an essential factor in germ cell division and gamete differentiation in Arabidopsis. One major objective of the thesis was to assess the validity of Brewbaker’s evidence that Magnoliaceae possess exclusively bicellular pollen at anthesis. This analysis provided

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29

Kesler, Herbert C. Guyer Craig. "Conservation of a Florida endemic carnivorous plant Godfrey's butterwort (Pinguicula ionantha) /." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Fall/Theses/KESLER_HERBERT_1.pdf.

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30

Oikawa, Junko. "Future role of living plant collections in gardens for biodiversity conservation." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314314.

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31

French, Graham Christopher. "Conservation genetics of the critical plant genus Euphrasia L. in Britain." Thesis, University of Edinburgh, 2003. http://hdl.handle.net/1842/13856.

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Recent national and international conservation legislation has led to an increased focus on ‘prioritised species lists’ for the allocation of conservation resources. However, prioritised species lists become problematic when there are difficulties in species delimitation. One particularly complex group accounting for the majority of these problems is <i>Euphrasia</i>. The goal of this thesis is to use molecular markers to evaluate taxon limits and evolutionary processes in British <i>Euphrasia</i> to clarify the most appropriate approach for conservation. The results show that the major repro

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32

Philpott, Megan. "The Genetic Consequences of ex situ Conservation of Exceptional Plant Species." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535467395352645.

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33

Montanari, Irene <1969&gt. "Irrigation and drainage canals role for plant diversity and nature conservation." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amsdottorato.unibo.it/9955/1/MONTANARI_IRENE_TESI.pdf.

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Aims: With this research, we wanted to investigate and promote the conservation of biodiversity in the network of drainage canals of the Po Valley Study area: The canal network of Bologna plain, long more than 1150 km (Po Valley, North Italy) Methods: In Chapter II we analyzed the geographical patterns that characterize our transects, the land use of their upstream basins, the water quality at the closure points of their river basins. In Chapter III we described the plant communities with some ecological information and we also tested the effect of the canal size on the plant communities.

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34

Kriticos, Darren John. "Landscape ecology and the management of remnant native vegetation : a case study in the Murray Mallee using a geographical information system /." Title page, table of contents and abstract only, 1992. http://web4.library.adelaide.edu.au/theses/09ENV/09envk92.pdf.

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35

Tokura, Wataru. "Understanding changes in plant productivity using EVI satellite data in Tswalu Kalahari Reserve." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20933.

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In the arid African savanna, the limited availability of water strongly affects plant productivity, but other key drivers of vegetation dynamics, such as herbivory and fire, are usually considered to have a relatively minor impact. The main purpose of this study was to characterise the spatial and temporal pattern in plant productivity in the 100 000 hectare Tswalu Kalahari Reserve (TKR) in the semi-arid Northern Cape and relate the observed changes to potential drivers using medium spatial resolution of MODIS Enhanced Vegetation Index (EVI) time series data (16 day, 250 m) from 2000 to 2015.

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36

Contreras, Toledo Aremi Rebeca. "A crop wild relative conservation strategy for Mexico." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8637/.

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There is an extensive diversity of crops and their wild relatives in Mexico, which are distributed throughout the country. Crop wild relatives (CWR) play a special role for present and future food security strategies: they represent a potential source of variation for the domesticated species, contributing to the genetic improvement of these crops. However, the effects of climate change, among other threats, are reducing significantly this biodiversity. The purpose of this study was to analyse the diversity of wild relatives of the most important crops in Mexico as a basis for the development

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37

Kashimshetty, Yamini. "Population growth and genetic diversity dynamics of modeled conservation methodologies for threatened plant species." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1468512768.

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38

Nam, Kam-shing, and 藍金成. "Conservation of Hong Kong wild orchids by leaf tip culture." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31212591.

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39

Yantis, James Hugh. "Vegetation classification and the efficacy of plant dominance-based classifications in predicting the occurrence of plant and animal species." Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/4165.

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One strategy for conserving biodiversity is to select large-area preserves that complement each other so the maximum number of species is conserved. Estimates of biodiversity and complementarity are needed for optimum selection of preserves. Comparisons are made in part by defining and mapping vegetation associations under the assumption that candidate areas with no associations in common likely have high complementarity. Conversely, areas with many associations in common have low complementarity. Vegetation associations are often distinguished on the basis of the dominant plant species. Assoc

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40

Angoh, Siow Yan Jennifer. "The birds, the bees and Erica: vulnerability of plant-pollinator communities in fragmented fynbos landscapes." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20996.

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Habitat fragmentation has been identified as a major cause of pollination mutualism collapse that can eventually impinge on plants' reproductive success (e.g. through pollen-limitation). Agriculture, timber plantations, invasion by alien trees and the urbanisation of the southern Cape lowlands have transformed and fragmented large parts of the former distribution range of many Erica species. Recent evidence suggests that in the Fynbos biome, small remnants of natural and disturbed vegetation are likely to display depauperate plant communities. In the present study, it was found that Erica spec

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41

Colvin, Wesley I. "Linking invasive plant management, conservation, and restoration on Santa Cruz Island, California /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2007. http://uclibs.org/PID/11984.

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42

Mitchell, David Norman. "The plant ecology and conservation of magnesian limestone sea cliffs, County Durham." Thesis, University of Sunderland, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295771.

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43

Hartter, David L. "Understanding consumers' ornamental plant preferences for disease-free and water conservation labels." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/34538.

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Product labeling is increasingly used as a tool to differentiate products with public and private benefits that cannot be readily evaluated by a consumer at the time of purchase. Our research investigates how a labeling program may be applied in the sale of ornamental plants to address two key issues; plant disease and irrigation water use. A choice modeling survey was utilized to estimate consumersâ willingness to pay a premium for six ornamental plants with disease-free and/or water conservation certification labels. The results of the mixed logit models show consumers are willing to pay a

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44

Everard, David Alexander. "The conservation status of some unique plant communities in the Eastern Cape." Thesis, Rhodes University, 1986. http://hdl.handle.net/10962/d1007497.

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In response to a growing concern over the rising rates of extinction of the world's plants and of habitat destruction, studies of Southern African threatened plants were initiated in the 1970's. These studies, which have largely concentrated on Western Cape flora, led to the publication of "Threatened Plants of Southern Africa" by Hall et al., 1980, which attempted to list as many threatened or possibly threatened species as possible. It was however marred by a lack of recent herbarium records and detailed studies from many parts of the region, the Eastern Cape being one of these. In order to

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45

Williams, Sophie J. "Improving plant conservation interventions through a better understanding of human decision-making." Thesis, Bangor University, 2013. https://research.bangor.ac.uk/portal/en/theses/improving-plant-conservation-interventions-through-a-better-understanding-of-human-decisionmaking(8bc894f9-329e-4f42-8f96-514eced01856).html.

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The threats to biodiversity are predominantly a result of human behaviour. Conservation interventions, from policy formulation to environmental education, often aim to foster behaviour change. But further research is needed to explore the mechanism of behaviour change in a conservation context and what interventions influence behaviour at different scales - from encouraging institutional adoption of conservation policy, to the determinates of household level decision-making. This is particularly important for plant conservation; with more than a quarter of plants species threatened, urgent act

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46

Bagchi, Anita. "Plant and animal science in ancient India : perspective, attitude and conservation measures." Thesis, University of North Bengal, 2009. http://hdl.handle.net/123456789/1529.

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47

Rivers, Malin C. "Range-wide analysis of the spatial distribution and genetic diversity of Delonix s.l. (Leguminosae) in Madagascar : enhancing herbarium-based conservation assessments." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2097.

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Despite their ecological and economic importance, the majority of plant species and their conservation status are poorly known. Only 4% of plants have been assessed globally and listed on the IUCN Red List of Threatened Species; and without plant conservation assessments, many plant species will not feature in conservation planning. Herbarium collection information can significantly increase the number of plant conservation assessments. Thus, the aims of this thesis were: (1) to investigate how the quality of herbarium-based conservation assessments can be optimised; (2) to assess the extent t

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48

Wong, Kwong-chiu Alfred, and 黃廣潮. "Conservation genetics of Hong Kong wild orchids." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31221920.

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49

Adams, Graham R. "The management of remnant native vegetation in heritage agreement areas /." Title page, table of contents and abstract only, 1991. http://web4.library.adelaide.edu.au/theses/09ENV/09enva213.pdf.

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50

McGrath, Kate. "Phylogeography and population genetics of two forest endemic mosses in the Cape Floristic Region." Bachelor's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/26502.

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Different histories for forests in Southern Africa have been hypothesized from vegetation biogeography and pollen analysis. However, the history of forests is still controversial. Phylogeography uses gene genealogies to infer history of distributions. Two forest endemic moss species were sampled: Leptodon smithii; and Neckera valentiniana. Two gene regions were used, trnLF (chloroplast genome) and ITS1 (nuclear genome). Neckera valentiniana showed no variation from the populations sampled. Results from Leptodon smithii based on the trn and ITS region suggest that forests once were widespread,

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