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Showing 1 to 20 of 43 for “"Lichens"”.
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Lichens as biomonitors for atmospheric polycyclic aromatic hydrocarbons
… aromatic hydrocarbons (PAHs) levels in lichens (species Parmotrema austrosinense (Zalhbr.) Hale) was performed successfully using various sample preparation techniques. Sampling campaigns were conducted at 5 different sites across South Africa. Different sample preparation techniques …
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Lichens as air pollution assays on the Western Cape coast
… the R27 road, and the N7 road. In this project lichens were used as pollution monitors and their availability, abundance and percentage cover were used to estimate the level of pollution. Lichen specimens were collected from St. James, which is far from the pollution source and put in the …
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The Physiological Response of sub-Arctic Lichens to Their Abiotic Environment
… mitis; suggesting, as found in vascular plants, lichens exhibit photosynthetic characteristics adapted to their abiotic environment. C. mitis thalli did not provide any evidence of plastic adaptation to temperature over a six day storage period; whereas, N. arcticum samples exhibited increased NP …
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A survey of the corticolous pyrenocarpous lichens of the Great Lakes region
Thesis ()--Michigan State University. Dept. of Botany and Plant Pathology, 1966
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The Corticolous Crustose and Microfoliose Lichens of Northeastern Brazil – Diversity, Ecology, and Conservation
… of crustose and microfoliose corticolous lichens made in a number of 22 localities of Atlantic rainforest, Caatinga and Brejos de Altitudes (caatinga enclaves) in the states of Rio Grande do Norte, Paraiba, Pernambuco, Alagoas, and Sergipe, in northeastern Brazil yielded a total of 450 …
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The eco-physiology of New Zealand forest lichens with special reference to carbon dioxide exchange
… effectiveness of these reserves in maintaining lichens in a moist condition in the field is calculated and the results are related to the ecology of the species. Morphological adaptations of Stictaceae lichens which maximise water holding capacity yet minimise CO₂ diffusion resistances are …
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Lichens as a biomonitoring tool for detecting heavy metal air pollution associated with industrial activities in Collie, south-western Australia
… last few decades, various techniques for using lichens as biomonitors have been developed for monitoring air pollution and forest ecosystem health. Lichens have been used effectively to determine the dispersion of heavy metals emitted by industrial point-sources; however the approach has not …
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Lichens Of Ultramafic Rocks: A Multidisciplinary Approach To Understanding The Ecology Of An Understudied Organism In A Well-Studied System
<p>Lichens are among the most prominent and successful life forms of metal-rich habitats, including ultramafic rocks and soils; however, research on lichens of ultramafic habitats is limited, especially on the North American continent. A review of the published literature on lichens of ultramafic …
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Ground Layer Response to Disturbance in the Pine-Dominated Eastern Foothill Region of West-Central Alberta, Canada
… layer is a mosaic of feather mosses and reindeer lichens in a system driven by disturbance. In this project, anthropogenic was used to control canopy cover change and study its effects on the ground layer. Timber companies selectively mechanically thinned sections producing three experimental …
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Performance of Lichen Species as Air Pollution Biomonitors in the Greater Auckland Urban Area, New Zealand
… and require high technical skills to operate. Lichens as biomonitors are an effective complementary because they accumulate pollutants in line with atmospheric concentrations. This research assesses the performance of lichens as air pollution biomonitors. The study was conducted in New Zealand, …
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Impact of Air Quality on Lichen Net Carbon Uptake and Structural Organization With Attention to the Role of Photoinhibition
… physiology and structure. Not only are these lichens subject to varying air quality, but they must also be able to cope with high light in collection areas, Pacific Northwest Forests, in summer while they remain in desiccated state for most part of the day with high irradiance. This research …
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INTERACTIONS OF ENVIRONMENTAL POLLUTANTS WITH MICROALGAE AND LICHEN: INSIGHTS FROM MULTI-PLATFORM METABOLOMICS
… of environmental pollutants with microalgae and lichens were investigated using multi-platform metabolomics. In chapter 2, differentiated metabolites in microalgae Chlorella vulgaris and Scenedesmus obliquus after exposure to triphenyl phosphate revealed perturbation in respiration, …
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Fluorescence Studies of Photosystem II Fluorescence Quenching During Desiccation
… compares the relative ability of green algae and lichens to recover photosynthetic activity after periods of desiccation using steady state fluorescence emission spectroscopy, and picosecond time-resolved fluorescence decay measurements. It was determined that desiccation induced quenching …
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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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Conquiologia e anatomia de Orthalicus pulchellus (Spix,1827) (Mollusca, Gastropoda, Pulmonata, Orthalicidae)
… that the animal feed itself scratching fungi and lichens from the surfaces of small trunks and branches of several plant species.
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