Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"Bryophyte"”.
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Reconstructing South African Afromontane forest history with bryophyte phylogeography
Forests occur as fragmented patches throughout Africa, however the basis for the disjunction of afromontane forests remains uncertain. The genetic structure of organisms should reflect their hi story, and in turn the history of their environment. Thus a phylogeographical study of forest-faithful …
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The diversity of ground bryophyte communities along an altitudinal gradient on La Réunion island
… α, β and phylogenetic diversity of the ground bryophyte communities along a tropical altitudinal gradient in order to determine which processes govern these assemblages. Location: La Réunion island (55°39'E; 21 °00'S), in the western Indian Ocean. Methods: The ground bryophyte communities were …
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The bryophyte flora of Bridal Veil Falls, British Columbia : an analysis of its composition and diversity
… This study presents an inventory of the bryophyte flora of Bridal Veil Falls Provincial Park and an adjacent boulder slope. This inventory provided the basis for a discussion of the ecology and geographical affinities of the bryoflora emphasizing the environmental and historical factors …
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Bryophyte diversity patterns in a fragmented landscape : a case study of South African West Coast renosterveld
… study examines the effects of fragmentation on bryophyte diversity in renosterveld vegetation of South Africa's west coast. The main objectives of this study are to; Document bryophyte species assemblages in remnant fragments of renosterveld vegetation, investigate the effect of fragment size, …
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Species richness and metacommunity dynamics in bryophytes
Bryophyte species richness and composition were analysed on limestone boulder habitats across twenty sites in Malta. These boulders acted as standard units for studying the effect of environmental, microtopographical and spatial factors on bryophyte metacommunities. The results indicated that …
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Bryophyte Community Response to Prescribed Fire and Thinning in Mixed-Oak Forests of the Unglaciated Allegheny Plateau
… the role of forest management activities on bryophytes; thus, we have little insight as to how bryophyte communities respond to stand level treatments. The goal of this investigation was to explore changes in mixed-oak forest bryophyte communities associated with the common silvicultural …
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BRYOPHYTE ASSEMBLAGES ON AMERICAN HORNBEAM (CARPINUS CAROLINIANA) AND THE SURROUNDING ARBOREAL COMMUNITIES WITHIN THE FOREST OF EAST TEXAS
<p>The bryophytes, the non-vascular plants, include the mosses (Bryophyta with approximately 13,000 species), the liverworts (Marchantiophyta with approximately 5,000 species), and the hornworts (Anthocerotophyta with approximately 150 species). Initial observations indicated that the midstory tree …
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Impacts of rock climbing on lichen and bryophyte communities at McLellan Rocks and Sharon Climbing Areas, Spokane County, WA
<p>Saxicolous lichens and bryophytes dominate cliff communities of Eastern Washington State. A recent rise in the outdoor recreation of rock climbing has caused major concerns over its potential negative impacts on cliff-dwelling biodiversity. To better understand how rock climbing is impacting …
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Bryophyte and macrolichen diversity of the Purdiaea nutans forest in southern Ecuador and its relationship to soil, climate and vegetation structure
… Neither the terrestrial nor the epiphytic bryophyte and macrolichen species richness or composition were affected by the unusual tree species composition, but instead represent typical upper montane ridge communities of the region. Distribution of bryophytes and Macrolichens is primarily …
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Ecological genetics of the moss Physcomitrella patens
Molecular genetic studies using the model bryophyte Physcomitrella patens have advanced the body of knowledge surrounding plant functional genetics and molecular biology, yet very little is known about the ecology and population genetics of this species. Although the bryophytes are the second …
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Diversity and biogeography of Madagascan bryophytes with an analysis of taxic and functional diversity along an elevational gradient in Marojejy National Park
… the regional and global context of the bryophytes of Madagascar, an ecologically important but poorly studied group, and the factors affecting epiphytic bryophyte diversity, distribution and assemblage of communities along an elevational gradient in Marojejy National Park, north-eastern …
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The Bryophytes of Roaring River State Park, Barry County, Missouri
A study of the bryophytes of Roaring River State Park, Barry County, Missouri, was made between May, 1978, and July, 1979. An annotated checklist includes collections made during this study, as well as previous collections, and contains 128 taxa representing 33 families, 69 genera and 86 new Barry …
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Climatic specialisation: an explanation for the range size and distribution of bryophytes on a tropical island elevational gradient
… this question using a very specific system: bryophytes on the elevational gradient of Piton des Neiges, Réunion Island. Bryophytes are expected to be specialised to fairly narrow conditions of drought, temperature and insolation, which restrict their geographic range. However, little is known …
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The Byrophytes of Ha Ha Tonka State Park, Camden County, Missouri
A study of the bryophytes of Ha Ha Tonka State Park, Camden County, Missouri, was made between April 1985 and March 1986. An annotated checklist includes collections made during this study, as well as previous collections, and contains 86 taxa representing 35 families, 60 genera and 14 new Camden …
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Evolutionary conservation of host responses to arbuscular mycorrhizal symbiosis in liverworts
… of extant land plants, including early diverging bryophytes. Despite its broad taxonomic distribution, little is known about the molecular components that underpin AMS in early diverging land plants. Several AMS associated genes were recently shown to be conserved in liverworts and hornworts, but …
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Growth, reproductive phenology, and population structure in Syntrichia caninervis
Syntrichia caninervis is a dioicous bryophyte of the arid Southwest. It exhibits a phenology and growth rate similar to the related species Tortula inermis. Mean growth rate was 0.29 mm +/- 0.04 (mean and S.D.). Expressing stems had a significantly greater growth rate than non-expressing stems, but …
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A bright, sweet evolution: a molecular genetic analysis of Calvin cycle gene expression response to light and sugar in the liverwort marchantia polymorpha, and insights into Calvin cycle promoter motif enrichment in land plants
… expression regulation. Marchantia polymorpha, a bryophyte in the Marchantiphyta division and newly emerging model liverwort plant, has been used in this study to demonstrate its potential use in CBB promoter evolution research. Transferring plants to darkness caused the downregulation of CBB …
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The colonisation by vegetation of colliery spoil heaps in the Forest of Dean, Gloucestershire, and implications for biodiversity management
… did not appear to be affected by time or pH. The bryophyte layer colonised plots over 16 years since disturbance rather than starting the succession, and its abundance appeared to be affected by aspect more than age.<br/><br/>On the 36-year site, the grazed plot had developed a higher species …
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Early land plant origins of the MYB-bHLH-WDR complex
… functional analysis of orthologues from the bryophyte *Marchantia polymorpha*. We found that protein-protein interactions were conserved. Further, we found that putative MBW complex members in *M. polymorpha* phenocopied each other with respect to flavonoid pigmentation and specialised oil …
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