Browsing Botany (Theses and Dissertations) by Subject "Botany, Ph.D."
Now showing items 1-20 of 96
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A comparison of climate and vegetation dynamics in central Ireland and NW Spain since the mid-Holocene
(Trinity College (Dublin, Ireland). Department of Botany, 2008)This research investigates chmate and vegetation dynamics in two Atlantic regions; central Ireland and NW Spain. Atmospheric and oceanic processes influence climate and hence vegetation through forcing factors operating ... -
A study of taxonomy of Salicornia L. in Ireland
(Trinity College (Dublin, Ireland), 1964)Introduction: The genus Salicornia is a notoriously difficult group. The number and nature of the taxa recognised, especially within the annual section of the genus, has varied considerably according to the differing ... -
A systematic revision of the Santalaceae R. Br. of Southeast Asia
(Trinity College (Dublin, Ireland). Department of Botany, 2001) -
A systematic revision of the Uvaria L. group (Annonaceae) in Continental Asia
(Trinity College (Dublin, Ireland). Department of Botany, 2001)The goal of this research project has been to complete a taxonomic revision of Uvaria L. (Annonaceae) and its affiliates in Continental Asia. Research was based primarily at the Trinity College Herbarium. Research visits ... -
A taxanomic revision of tribe Ocimeae Dumort. (Labiatae) in continental South East Asia
(Trinity College (Dublin, Ireland). Department of Botany, 2001)This thesis aims to provide a complete account of the tribe Ocimeae for Thailand, Laos, Vietnam, Cambodia and Burma. In addition, the relevant generic problems of Ocimeae in continental South East Asia are outlined, and ... -
Assessing soil respiration in the soil profile. A study case of gradient-based CO2 efflux and subsurface production rates using soil diffusion chambers
(Trinity College (Dublin, Ireland). Department of Botany, 2010)The impact of global warming on soil respiration is strongly related to the characteristics of deep-soil carbon and may differ with soil depth. Environmental parameters can affect the rates of soil CO2 respiration not only ... -
Assessing the impact of climate change on the net ecosystem exchange of Irish grasslands : a case study of CO₂ efflux using multiple microcosm enclosure facilities
(Trinity College (Dublin, Ireland). Department of Botany, 2013)It is now widely accepted that human activity is having a discernible effect on the global climate, and these changes will impact upon the functioning of many of the planet's natural systems (Cox et al, 2000; Trumbore, ... -
Biogeography and speciation of the genus Peperomia Ruiz & Pavón in Eastern Polynesia
(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 ... -
Biological communities and environmental controls in a seasonal wetland habitat
(Trinity College (Dublin, Ireland). Department of Botany, 2017)In a context of global biodiversity decline, ponds have been identified as biologically rich habitats, and temporary ponds can support distinct communities of rare species. Some pond habitats, including dune slacks, are ... -
Biological N₂ fixation and N loss as N₂O and N₂ in a white clover-based system of dairy production
(Trinity College (Dublin, Ireland). Department of Botany, 2014)Pasture-based livestock production systems have a relatively large requirement for nitrogen (N) input compared to other food production systems. These inputs may consist of organic N, mineral N or biologically-fixed N. Of ... -
Characterisation of Miscanthus genetic resources : a combined analysis of plastid and nuclear microsatellites, nrDNA sequences, flow cytometry and morphology
(Trinity College (Dublin, Ireland). Department of Botany, 2012)Miscanthus is a highly important forage and horticultural genus of perennial grasses (Poaceae) primarily native to South East Asia. Miscanthus is under intense global investigation as a biomass source for renewable energy ... -
Chemical ecology and conservation biogeography of Rhododendron ponticum L.
(Trinity College (Dublin, Ireland). Department of Botany, 2015)The general aims of this thesis were two-fold; firstly, to further knowledge on the topic of toxic nectar in plants, utilizing Rhododendron ponticum (and associated taxa) as a model for these investigations; and secondly, ... -
Conservation and molecular characterisation of Irish veteran oak (Quercus spp.) and ash (Fraxinus excelsior L.)
(Trinity College (Dublin, Ireland). Department of Botany, 2009)Three chloroplast markers and three nuclear microsatellite markers were applied to DNA samples from ash-leaf material. Less diversity was found in veteran ash than in the younger populations studied by Harboume et al (2005). ... -
Conservation biology of Colchicum autumnale L. and Campanula trachelium L. in the Nore Valley, Southeast Ireland
(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 ... -
Conservation biology of Saxifraga hirculus L. in Ireland
(Trinity College (Dublin, Ireland). Department of Botany, 2012)A perennial herbaceous plant with a wide circumpolar distribution, Saxifraga hirculus L. has a highly fragmented distribution outside the northern Polar Regions. In Europe its range has been reduced dramatically with records ... -
Conservation of selected legally protected and red-listed bryophyte species in Ireland
(Trinity College (Dublin, Ireland). Department of Botany, 2013)This thesis focussed on the conservation of ten rare and threatened bryophyte species in Ireland using three separate, but complementary conservation approaches to provide an integrated strategy to ensure their survival ... -
Deep-sea coral reef ecology : feeding mechanisms, community interactions, and habitat associations of deep-sea echinoids
(Trinity College (Dublin, Ireland). Department of Botany, 2014)The ultimate aim of the thesis was to probe into the ecology of deep-sea echinoids in order to contribute newfound information to this topic, as well as develop tools to facilitate ecological work in deep-sea environments. ... -
Delimitation and diversity of the genus Badula Juss. (primulaceae) - rare endemic trees of the Mascarene Archipelago
(Trinity College (Dublin, Ireland). Department of Botany, 2010)The western Indian Ocean Mascarene archipelago is a trio of geologically young volcanic islands that have never been connected to a continent or continental fragments. The islands are biologically diverse, and 72% of the ... -
Ecological impacts of invasive plants on pollinators : studies on an individual, species and community scale
(Trinity College (Dublin, Ireland). Department of Botany, 2015)Pollination is a critical ecosystem service yet pollinators are experiencing worldwide declines. Although invasive alien species are cited as a major driver of pollinator declines, little is known about how pollinators are ... -
Ecology and distribution of mechanically dependent plants along a gradient of past hurricane impact
(Trinity College (Dublin, Ireland). Department of Botany, 2015)High energy weather events have been shown to substantially affect forest community dynamics by causing structural and microenvironmental alterations to the affected stand. The degree to which forests respond to storm ...