Now showing items 21-40 of 119

    • Restoration of native woodland in former conifer plantations 

      Smith, George F, 1971- (Trinity College (Dublin, Ireland). Department of Botany, 2003)
      The majority of Irish forests are plantations of exotic conifer species, with semi-natural woodlands occupying less than 1% of Ireland. Recent land-use changes, in particular the expansion of National Parks and Nature ...
    • Conservation biology of Colchicum autumnale L. and Campanula trachelium L. in the Nore Valley, Southeast Ireland 

      Smith, Rhian Jane (Trinity College (Dublin, Ireland). Department of Botany, 2004)
      The conservation of plant biodiversity can only proceed effectively if it is informed by a detailed biological knowledge of the target species and their constituent populations. The overall aim of this study was to assess ...
    • Phylogenetic analysis of Papaver L. 

      Carolan, James C. (Trinity College (Dublin, Ireland). Department of Botany, 2004)
      The phylogenetic relationships of Papaver L. were investigated using morphological, molecular and phytochemical characters. Such information is of great utility because Papaver species produce highly valuable secondary ...
    • 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 ...
    • Risk assessment of genetically modified crops in Ireland : investigations of pollen dispersal from oilseed rape (Brassica napus L.) using molecular and pollen trapping techniques 

      Flannery, Marie-Louise (Trinity College (Dublin, Ireland). Department of Botany, 2004)
      A risk assessment was carried out to help determine the extent of pollen flow from a crop of oilseed rape (OSR, Brassica napus L). The project aimed to develop a better understanding of the potential risks of gene flow ...
    • Micropropagation of ash (Fraxinus excelsior L.) 

      Abbott, Jane I. E. (Trinity College (Dublin, Ireland). Department of Botany, 2005)
      Ash (Fraxinus excelsior L.) is a native hardwood species in Ireland used as a fast growing tree that is well adapted to agricultural sites. It produces wood valued for its toughness and elasticity. A key objective for Its ...
    • Ground flora communities in Ireland's plantation forests : their diversity, structure and composition 

      French, Laura J. (Trinity College (Dublin, Ireland). Department of Botany, 2005)
      Ireland is committed to the principles of Sustainable Forest Management (SFM). Inherent to these principles is the conservation and appropriate enhancement of biological diversity in the country’s plantation forests. ...
    • The characterisation of genetic diversity of common ash (Fraxinus excelsior L.) in Ireland and around Europe 

      Harbourne, Maeve (Trinity College (Dublin, Ireland). Department of Botany, 2005)
      Fraxinus excelsior (ash) is a native tree species in Ireland and is economically important for the production of timber that is strong, elastic and light. Having migrated after the last glaciation from mainland Europe, it ...
    • 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 ...
    • 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, ...
    • 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 ...
    • Soil CO2 fluxes in Irish agricultural systems 

      Kumar Jogi, Suresh (Trinity College (Dublin, Ireland). Department of Botany, 2007)
      Worldwide concern with climate change and its effects on our future environment requires a better understanding and quantification of the processes contributing to it. Studies on the role of soil processes is needed to ...
    • 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 ...
    • Grass-evolution and diversification : a phylogenetic approach 

      Bouchenak-Khelladi, Yanis (Trinity College (Dublin, Ireland). Department of Botany, 2007)
      The growth in size of phylogenetic trees, over the last 20 years, has allowed evolutionary biologists to better test hypotheses about the evolutionary history of organisms, and especially those of species rich taxa such ...
    • The contribution of nitrous oxide emissions from Irish agriculture to global warming 

      Abdalla, Mohamed F. (Trinity College (Dublin, Ireland). Department of Botany, 2007)
      Results from this thesis concern the calculation of annual fluxes and emission factors of the greenhouse gas nitrous oxide from two agricultural soils in Co. Carlow, Ireland. For a cut and grazed pasture in 2004, the annual ...
    • Epiphyte diversity in Irish conifer plantations 

      Coote, Linda (Trinity College (Dublin, Ireland). Department of Botany, 2007)
      Government policy aims to increase the area under forestry in Ireland from its current 10% to 17% by 2030. Baseline information on the biodiversity of these forestry plantations is required if they are to be effectively ...
    • Spatial and temporal fluxes of plant-nutrients in turlough soils 

      Kimberley, Sarah (Trinity College (Dublin, Ireland). Department of Botany, 2008)
      Turloughs are annually flooding karstic depressions which constitute ecologically important and geographically restricted ground-water dependent ecosystems, identified as priority habitats under the EU Habitats Directive. ...
    • 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, ...
    • Phosporous dynamics of grazed grassland in Ireland 

      Bourke, David (Trinity College (Dublin, Ireland). Department of Botany, 2008)
      The loss of phosphorus (P) from agricultural sources is one of the main causes of eutrophication in P limited freshwater ecosystems. High losses have been shown from grazed grasslands in particular. The aim of this ...
    • 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 ...