Botany (Theses and Dissertations): Recent submissions

Now showing items 61-80 of 129

    • The flora and vegetation of Pitcairn Island : its phytogeography and conservation 

      Kingston, Naomi (Trinity College (Dublin, Ireland). Department of Botany, 2001)
      Good decisions cannot be made about the conservation of nature if we do not know what it is, where it is, and in what abundance. The aim of this thesis was to provide an integrated approach to the conservation of Pitcairn ...

    • The exploitation of soil organic phosphate by grassland plants 

      Carroll, Nyree-Dawn (Trinity College (Dublin, Ireland). Department of Botany, 2002)
      This study was concerned with the availability of soil organic phosphate (Po) to plants. To address this issue semi-natural Irish grassland soils and plants were used. Greenhouse experiments were carried out in which soil ...

    • Taxonomy and systematics of Dendrocalamus (Bambuseae; Poaceae) 

      Sungkaew, Sarawood (Trinity College (Dublin, Ireland). Department of Botany, 2008)
      This thesis is concerned with the taxonomy and systematics of Dendrncalamus (Bambuseae; Poaceae). It aimed to assess phylogenetic relationships in the subfamily Bambusoideae and to focus on one highly economically, ...

    • Syzygium jambos(L.)Alston(Myrtaceae) control, conservation and restoration of the threatened native flora of Pitcairn Island, South Central Pacific 

      Smyth, Noeleen (Trinity College (Dublin, Ireland). Department of Botany, 2008)
      To fully fulfil the many aspirations of plant conservation, a quantitative, practical and economic approach to the problems in hand must be taken. Modem conservation biology involves recovering lost habitat and thwarting ...

    • Fluxes of carbon and water in Cyperus papyrus L. tropical wetlands 

      Saunders, Matthew (Trinity College (Dublin, Ireland). Department of Botany, 2006)
      Carbon dioxide (CO2 ), water vapour (H2O) and energy fluxes play important roles in the functioning of vegetative ecosystems and also influence the climate of our planet at both the regional and global scale through important ...

    • Systematics of Eriocaulaceae in Thailand 

      Prajaksood, Amornrat (Trinity College (Dublin, Ireland). Department of Botany, 2006)
      This thesis aimed to provide a complete account of the family Eriocaulaceae for Thailand, to resolve the identity of unknown Thai taxa in the family and to investigate the relationship between Thai species using morphological, ...

    • Evidence of former tree growth at Clonsast 

      Murray, Neil Robert William (Trinity College (Dublin, Ireland), 1957)
      Six thousand years ago practically all the ground now covered by peat in the area investigated at Clonsast, County Offaly, was woodland. The main object of the research was to trace the disappearance of woodland due to ...

    • The origin and evolutionary history of the turlough form of Ranunculus repens 

      Murphy, Susan (Trinity College (Dublin, Ireland). Department of Botany, 2004)
      Turloughs are temporary lakes that occur in karstic limestone areas predominantly in the West of Ireland. They generally flood with groundwater in Autumn and empty through swallow holes in late Spring. This strong ecological ...

    • The characterisation of genetic diversity of a collection of perennial ryegrass (Lolium perenne L.) 

      McGrath, Sarah Katherine (Trinity College (Dublin, Ireland). Department of Botany, 2008)
      Perennial ryegrass (Lolium perenne L.) is a member of the Poaceae family, is native to Europe, the Near East and North Africa and is grown in all the temperate climate areas of the world as a forage and turf grass. Due to ...

    • The biogeography and conservation biology of Spiranthes romanzoffiana Chamisso 

      Lupton, Darach (Trinity College (Dublin, Ireland). Department of Botany, 2008)
      The aim of this research was to gather baseline data on Irish populations of Spiranthes romanzoffiana, a species with an uneven amphi-Atlantic distribution. The species is widespread in North America. In Europe, populations ...

    • Systematics of Juncaceae 

      Jones, Eleanor (Trinity College (Dublin, Ireland). Department of Botany, 2008)
      The systematics of Juncaceae is investigated using morphological and molecular data. A study of the anatomy of Juncaceae is presented as anatomical descriptions of the leaves, including observations of previously undescribed ...

    • Low temperature and leaf growth in grasses 

      Farrell, Aidan D. (Trinity College (Dublin, Ireland). Department of Botany, 2005)
      The central role of temperature in regulating plant growth was investigated by analysing the temperature sensitivity of various aspects of growth in grass leaves. A study of thermal responses in the C4 grass Miscanthus ...

    • The effects of elevated CO2 and water stress on C2 pasture species (Blepharis linariifolia and Cenchrus biflorus) native to Sudan 

      Zaki-Eldeen, Sumaya (Trinity College (Dublin, Ireland). Department of Botany, 2001)
      A doubling of the pre-industrial atmospheric CO2 concentration (~280 ppmv) is expected by the middle of this century, if the current rate of growth in the annual emission of fossil carbon is maintained. The effects of ...

    • Morphological and molecular systematics of the genus Miscanthus anderss 

      Scally, Louise (Trinity College (Dublin, Ireland). Department of Botany, 2001)
      Increasing fuel costs and a depletion of the earth's natural energy resources have lead to a global search for alternative sources of renewable energy. In response, the "European Miscanthus network" funded by the European ...

    • Biogeography and speciation of the genus Peperomia Ruiz & Pavón in Eastern Polynesia 

      Bradley, Una (Trinity College (Dublin, Ireland). Department of Botany, 2003)
      There are 17 Peperomia laxa within the remote islands of South-eastern Polynesia, of which 14 are endemic. Expeditions (S. Waldren 1991, S. Waldren & N. Kingston 1997, U. Bradley & N. Kingston 2000) have resulted in the ...

    • Revision of the Liverwort genus Asterella P. Beauv. (Marchantiales, Aytoniaceae) in Continental Eurasia, Malesia and Japan 

      Long, David Geoffrey (Trinity College (Dublin, Ireland). Department of Botany, 2001)
      This study constitutes a taxonomic revision of the genus Asterella in Eurasia, Asterella belongs to the family Aytoniaceae in the Chambered Liverworts (Marchantiales). It is poorly understood taxonomically and a worldwide ...

    • Quantifying the environmental drivers of tree phenology 

      Caffarra, Amelia (Trinity College (Dublin, Ireland). Department of Botany, 2007)
      The prediction of growth onset is particularly complicated, because this phenophase is the end-point of a series of poorly understood physiological changes that are not directly observable, occurring while the bud is ...

    • Phylogenetics, taxonomy and evolution of Camellia (Theaceae) in the Indochinese Peninsula 

      ZHAO, DONGWEI (Trinity College Dublin. School of Natural Sciences. Discipline of Botany, 2018)
      Tea, camellias and oil camellia have brought huge profits to people worldwide. These plants belong to the genus Camellia. The variable morphological characters of the group make the classification of Camellia very difficult ...

    • Application of genomic tools for Irish pasture improvement 

      AROJJU, SAI KRISHNA (Trinity College Dublin. School of Natural Sciences. Discipline of Botany, 2018)
      The conventional way to improve populations in perennial ryegrass (Lolium perenne), the most important forage grass in Ireland, is through recurrent selection. However, despite breeding for nearly a century, the rate of ...

    • Tiered Species Toxicity Assessment of Six Agricultural Pesticides on the Freshwater Environment 

      ESMONDE, LOUISE MARGARET (Trinity College Dublin. School of Natural Sciences. Discipline of Botany, 2017)
      This research project aims to investigate the toxicity of six commonly used agricultural pesticides (formulations based on glyphosate, mecoprop-p, chlorothalonil, mancozeb, metaldehyde and chlorpyrifos) on three key ...