Search Constraints
Search Results
-
Doctoral thesis
Conservation genetics and biogeography of the Caribbean pine (Pinus caribaea var. bahamensis) in the Bahaman archipelago.
The Bahaman archipelago contains large expanses of pine forests, where the endemic Caribbean pine Pinus caribaea var. bahamensis is the dominant species. This pine forest ecosystem is rich in species and also a valuable resource for the local economy. Small areas of old-growth forest still remain in the Turks and...Sanchez, Michele
Pinus caribaea var. bahamensis, Biogeography, Bahaman archipelago, and Conservation genetics
-
Doctoral thesis
Phylogenetics, genome size evolution and population genetics of slipper orchids in the subfamily Cypripedioideae (Orchidaceae).
Slipper orchids (subfamily Cypripedioideae) comprise five genera; Paphiopedilum, Cypripedium, Phragmipedium, Selenipedium, and Mexipedium. Phylogenetic relationships of the genus Paphiopedilum, were studied using nuclear ribosomal ITS and plastid sequence data. The results confirm that Paphiopedilum is monophyletic and support the division of the genus into three subgenera Parvisepalum, Brachypetalum and Paphiopedilum....Chochai, Araya
Genome size evolution, Orchids, Phylogenetics, Population genetics, Slipper orchids, Cypripedioideae, and Orchidaceae
-
Doctoral thesis
Central African lowland forest resilience to fire disturbance and climate change : answers from the past.
Tovar-Ingar, Carolina
Gilbertiodendron, Central Africa, Palaeoecology, Tropical rainforests, Africa, Republic of Congo, Fire disturbance, Fire resilience, Climate change, and Lowland forest
-
-
Doctoral thesis
Molecular and Genome Evolution in the Malesian Slipper Orchids (Paphiopedilum section Barbata).
Paphiopedilum section Barbata (Cypripedioideae: Orchidaceae) is an evolutionarily young and charismatic group of terrestrial orchids native to the Himalayas, Indochina and Malesia. It contains several interesting species complexes, variable chromosome numbers (2n=28-42) and genome sizes (2C=55-70 pg) with hybrid speciation suspected on the basis of morphological data. In Chapter 1,...Yap, Jing Wei
Molecular evolution, Paphiopedilum section Barbata, Malesia, and Genome evolution
-
Doctoral thesis
Boraginaceae Varronia rupicola (Urb.) Brtton : biogeography, systematic placement and conservation genetics of a threatened species endemic to the Caribbean.
In the Caribbean region, Varronia rupicola (Boraginaceae) is a medium to large, woody shrub endemic to the Puerto Rican Bank where it is threatened with extinction due to its limited area of occupancy, small populations and on-going threats. The greatest of these is currently loss of suitable habitat through development...Hamilton, Martin Allen
Biogeography, Varronia rupicola, Endemic, Caribbean, Threatened species, Systematics, and Conservation genetics
-
Doctoral thesis
Fungal interactions with vascular and non-vascular plants: an investigation of mutualisms and their roles in heathland regeneration.
Mycorrhizal mutualisms between aboveground vascular plant communities, which reward their belowground fungal associates with photosynthates in return for growth-limiting nutrients such as phosphate, are widely recognized as stable long-term interactions which helped plants colonize land. Pezoloma ericae (D.J. Read) Baral, an ascomycete mycorrhiza-forming fungus present amongst plants in the Ericales,...Kowal, Jill
Heathlands, Plant-fungus relationships, Heathland regeneration, Mycorrhizal mutualisms, Mutualism, and Mychorrhizae
-
Doctoral thesis
The botany and macroscopy of Chinese materia medica: sources, substitutes and sustainability.
Interest in Traditional Chinese Medicine (TCM) is global. The burgeoning international trade in its crude and processed plant ingredients (Chinese materia medica - CMM) reflects demand across all sectors of healthcare, yet the identification of source plants and CMM has been overlooked for many years leading to problems in safety,...Leon, Christine
Taxonomy, Chinese medicine, Botany, Medicinal plants, Medicine, Materia medica, Conservation, Plant morphology, Authentication, and China
-
Doctoral thesis
Heterogeneous cloth: an ethnography of the coming into being of barkcloth artefacts at the Royal Botanic Gardens, Kew, and amongst the Nuaulu of Nua Nea Village, Maluku, Eastern Indonesia.
5. Abstract This thesis uses barkcloth artefacts as a methodological point of entry and fieldsite, to explore their material properties. It argues that the material properties of barkcloth artefacts are indexical of social relations, as it moves between contexts; exploring the nature of properties as inherently diverse or diversely exploited,... -
-
-
-
Doctoral thesis
Phytogeography and the stoichiometric niche: exploring their interplay in Sulawesi
The Indonesian island of Sulawesi is comprised of a mosaic of soil types including the largest ultramafic outcrops in the tropics (ultramafic soils are macronutrient low and phytotoxic heavy metal rich). The island’s ontogeny is also distinctive, whereby it has formed only recently < 2 million years ago via agglomeration...Trethowan, Liam A.
-
Doctoral thesis
Plant conservation in space, time and a changing world: forecasting the fate of Coffea arabica in Ethiopia.
We are facing an ever-increasing environmental crisis on our planet, with multiple threats from humankind. Industrialisation, deforestation, overpopulation and exploitation of our natural resources is driving species to extinction and changing the environment we live in. We need to plan for the future in order to adapt or mitigate these...Moat, Justin
Cultivated plants, Ethiopia, Crop wild relatives, Climate change, Plant conservation, Coffea arabica, and Coffee industry
-
-
-
-
Doctoral thesis
Phylogenetic relationships of Fabales, the effect of outgroups on Fabales topology and the evolution of keel flowers within the order.
Fabales is a cosmopolitan angiosperm order which consists of four families, Leguminosae (Fabaceae), Polygalaceae, Surianaceae and Quillajaceae. Despite the great interest of botanists, a convincing phylogeny of the order is still not available because almost every phylogenetic study reveals a different scheme of relationships amongst families of the order. Therefore,...Aygoren Uluer, Deniz
-
Master's dissertation
Revisiting generic concepts in the Teloschistaceae (lichenforming Ascomycota) using molecular phylogenetics, algorithmic taxa delimitation and molecular networks
In systematics, genera delimitation is constantly changing as taxonomic units above species level are not standardised. The Teloschistaceae, a diverse family of lichenised fungi, represents an extreme example of this where the number of genera has increased tenfold in the last decade. Many of these genera are based solely on...Llewellyn, Theo
-
Master's dissertation
Revision of Chassalia (Rubiaceae) in Borneo
The genus Chassalia in Borneo is revised based on a morphological survey of herbarium specimens using classical taxonomic methods. The tribal placement and probable paraphyly of Chassaliaas currently delimited is reviewed. Previously four described species of Chassalia were known from Borneo with only one endemic species Chassalia psychotrioides . 12...Yu, Tianyi
-
-
Doctoral thesis
Phylogenetics and characterisation of Lamiaceae tribe Ocimeae, subtribe Ociminae.
Phylogenetic analyses of the subtribe Ociminae (Lamiaceae) based on four plastid DNA regions (trnL–trnF intergenic spacer, trnH-psbA intergenic spacer, matK and rps16 intron) and two nuclear DNA regions (ITS and ETS) are presented. Bayesian inference was utilized for the reconstruction of phylogenies and for the assessment of statistical support for...Althobaiti, Ashwaq T.
Characterisation, Phylogenetics, Ociminae, Lamiaceae, and Ocimeae
-
-
Doctoral thesis
Species integrity and hybridization in anthropomorphic Orchis species (Orchidaceae).
Hybridization is widespread in Orchis (Orchidaceae), with 38 recorded hybrids between the 21 accepted species. The four anthropomorphic Orchis species that occur in Britain (O. anthropophora, O. militaris, O. purpurea and O. simia) are on the edge of their range and are of high conservation priority. Understanding how these species...Bersweden, Leif
Orchidaceae, Great Britain, Anthropomorphic species, Hybridization, and Orchis
-
Doctoral thesis
Taxonomy and systematics of Urophyllum (Rubiaceae) in Thailand and Indochina.
The genus Urophyllum Wall. is a taxonomically problematic genus of Rubiaceae in Thailand due to the lack of a recent taxonomic revision and identification key to the species. This has led to confusion in the identification of species and no conservation status assessments for the genus. The aim of this...Yooprasert, Sawita
Indochina, Urophyllum, Taxonomy, Morphometrics, Plant morphology, Thailand, Systematics, and Phylogenetics
-
Doctoral thesis
Population genomics of temperate forest trees.
-
-
Doctoral thesis
Taxonomy, evolutionary history, and ecological dominance of Themeda and Heteropogon.
Heteropogon and Themeda grasses are common and significant components of the C4 savannas which have recently gained more attention for conservation and biodiversity research. The two genera have been the subject of ecological research due to their widespread and dominant species H. contortus and T. themeda. Like many tropical plant...Arthan, Watchara
Phylogenetics, Evolutionary history, Ecological dominance, Heteropogon, Taxonomy, C4 savannas, Functional traits, and Themeda