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 27 for “"Epiphyte"”.
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The influence of epiphytes on arthropods in the tropical forest canopy
… challenge for modern biology. In this context, epiphytes are presumed to play an important role. To investigate the biological reality of this persistent yet insufficiently investigated notion, I conducted the present study. The main questions I intended to clarify were: (1) do epiphytes affect …
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Investigation of the role of the extracellular β-agarase, produced by the bacterial epiphyte Pseudoalteromonas sp. LS2i, in the virulence response towards the agarophyte Gracilaria gracilis
Gracilaria gracilis that grows naturally at Saldanha Bay, South Africa is economically important as a source of agar. The Gracilaria yields from natural beds at Saldanha Bay are however unreliable, and consequently the South African Gracilaria industry has experienced a number of setbacks over the …
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Distribution and biomass of epiphytic seaweeds on the kelp Ecklonia maxima (Osbeck) Papenfuss, and the potential effects of two kelp-harvesting methods in the Western Cape
… populations, particularly the three obligate epiphyte species; Carpoblepharis flaccida, Polysiphonia virgata and Suhria vittata, and whether there is pattern of distribution of epiphyte populations around the Cape Peninsula. The distribution of the epiphytes on the different portions (stipe; …
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Assessing biofilm and epiphytes on seagrass leaves as bioindicators of environmental change
… limited studies within seagrass habitats. Algal epiphytes within seagrass meadows are frequently studied and are considered good bioindicators of light limitation, however, faunal epiphytes have rarely been considered. The objective of this research was to determine the effect of two different …
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Climate control on plant performance across an Andean altitudinal gradient
… examine the demographic performance of vascular epiphyte and canopy tree species to this climatic gradient. An expected step change in climatic variables near putative 'cloud base' was not observed, contrasting with rapid changes in net primary productivity, soil properties, and bryophytic …
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Plant size and intraspecific variability in vascular epiphytes
… with plant size. Moreover, as shown for nine epiphyte species covering the most important taxonomic groups, the intraspecific variability in PC was almost always higher than the interspecific variability when comparing only large individuals. In situ studies with the epiphytic bromeliad V. …
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Ecology and ecophysiology of Zostera capensis: responses and acclimation to temperature
… from fouling, which was evident in their larger epiphyte loads, compared to small-leaved populations. In addition, grazers were ineffectual at regulating epiphyte growth which increased under warming conditions. These findings suggest differences in resilience between sub-populations of Zostera, …
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Trophic dynamics in Australian seagrass beds : unravelling linkages from nutrients to fish
… response driving these changes. In general, epiphyte and grazer biomass were greater in developed catchments with higher nutrient loads during long-term field sampling of systems approaching equilibrium. However, a decoupling from the epiphyte trophic pathway was evident in higher trophic …
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Development and validation of PCR-RFLP assay for identification of Gambierdiscus species in the Greater Caribbean region
… commonly co-occur within a single site or epiphyte community. Toxicity can vary by species, thus it is important to be able to differentiate between the species for research and monitoring purposes. Gambierdiscus species have very similar morphological characteristics and are very difficult …
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MOVEMENTS, ACTIVITY RANGE, HABITAT USE, AND CONSERVATION OF THE JAMAICAN (YELLOW) BOA, EPICRATES SUBFLAVUS
… being larger than those of females. Vine and epiphyte coverage of trees and tree DBH are key features of boa habitats. Vines and epiphytes provide resting places, camouflage, and travel routes for boas. Conservation of the Jamaican boa must include an extensive education and outreach program …
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MOVEMENTS, ACTIVITY RANGE, HABITAT USE, AND CONSERVATION OF THE JAMAICAN (YELLOW) BOA, EPICRATES SUBFLAVUS
… being larger than those of females. Vine and epiphyte coverage of trees and tree DBH are key features of boa habitats. Vines and epiphytes provide resting places, camouflage, and travel routes for boas. Conservation of the Jamaican boa must include an extensive education and outreach program …
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Environmental Determinants of Stigonematales In A Southeastern Reservoir.
<p>A cyanobacterial epiphyte in the order of Stigonematales has affected waterfowl and their avian predators on Lake J. Strom Thurmond since 1998. Avian mortalities caused by Stigonematales occur on Lake Thurmond from October through March. The purpose of this study was to examine the factors that …
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Evaluating eelgrass (Zostera marina) as a juvenile habitat for rockfishes : contributions of site characteristics and larval supply to juvenile abundance
… high juvenile abundance value included lower epiphyte biomass, nearness to kelp habitats, lower water temperature, lower shoot density, and higher leaf width.
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EVALUATING HABITAT USE BY NEKTON IN WIDGEON GRASS (RUPPIA MARITIMA), SHOAL GRASS (HALODULE WRIGHTII), AND UNVEGETATED BOTTOM HABITATS IN THE GRAND BAY NATIONAL ESTUARINE RESEARCH RESERVE
… aboveground biomass, root to shoot ratio, and epiphyte density. Juveniles of several commercially fished nekton species including blue crabs (<em>Callinectes sapidus</em>), white shrimp (<em>Penaeus setiferus),</em> and brown shrimp (<em>Penaeus aztecus</em>) were collected, with higher …
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Evaluating Relationships between Mercury Concentrations in Air and in Spanish Moss (<em>Tillandsia Usneoides</em> L.)
… United States because it is an abundant epiphyte that absorbs and accumulates atmospheric pollutants. A study was conducted in southeastern Georgia and northern Florida to test the hypotheses that 1) Spanish moss absorbs and retains atmospheric mercury in tissue, and 2) atmospheric …
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The role of cross-kingdom biofilms in the epiphytic growth of Zymoseptoria tritici
… insight into how Z. tritici survives as an epiphyte on the leaf surface and provides a novel avenue for controlling this pathogen indirectly through controlling its interactor bacteria.<p></p>
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The role of cross-kingdom biofilms in the epiphytic growth of Zymoseptoria tritici
… insight into how Z. tritici survives as an epiphyte on the leaf surface and provides a novel avenue for controlling this pathogen indirectly through controlling its interactor bacteria.<p></p>
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Feeding Ecology and Aspects of Life History in <i>Microcebus Rufus</i> (Family Cheirogaleidae, Order Primates)
… their natal range.</p> <p>The semi-parasitic epiphyte <em>Bakerella</em> was consumed year-round during periods of high and low resource availability. Along with its high lipid content this suggests that it serves as both a staple and a keystone resource. Coleoptera were consumed regularly …
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