Search Results - "Nash, T.H. III"

Physiological responses of lichens to factorial fumigations with nitric acid and ozone by Riddell, J., Padgett, P.E., Nash, T.H.

“…This paper addresses the effects of gaseous nitric acid (HNO3) and ozone (O3), two important air pollutants, on six lichen species with different…”
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effect of HNO₃ gas on the lichen Ramalina menziesii by Riddell, J, Nash, T.H. III, Padgett, P

“…Nitric acid (HNO₃) and ozone (O₃), secondary products of photochemical reactions of nitrogen oxides (NO(x)) and volatile organic compounds, are important…”
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Hybocarpone, a novel cytotoxic naphthazarin derivative from mycobiont cultures of the lichen Lecanora hybocarpa by Ernst-Russell, Michael A., Elix, John A., Chai, Christina L.L., Willis, Anthony C., Hamada, Nobuo, Nash, Thomas H.

“…Hybocarpone ( 1), a novel pentacyclic naphthazarin-derived dimer has been isolated from mycobiont cultures derived from the lichen Lecanora hybocarpa. The…”
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Physiological Effects of the Mexico City Atmosphere on Lichen Transplants on Oaks by Zambrano, A., Nash, T. H., Gries, C.

“…Two lichen species, Usnea ceratina Ach. and Everniastrum neocirrhatum (Hale M. Wirth) Hale ex Sipman, were transplanted for 54 d into an oak forest (Quercus…”
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On the relationship between nutrient use efficiency and fertility in forest ecosystems by Knops, J.M.H, Koenig, W.D, Nash, T.H. III

“…The concept of nutrient use efficiency is central in understanding ecosystem functioning because it is the step in which plants can influence the return of the…”
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Exchange of reduced sulfur gases between lichens and the atmosphere by Gries, C, Nash, T.H. III, Kesselmeier, J

“…Fourteen lichens, 10 green algal lichens and four cyanolichens, as well as a cyanobacterium emitted significant quantities of H2S (0.01-0.04 pmol g dw-1 s-1)…”
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Lichens of wilderness areas in California: Baseline studies for monitoring air pollution. [Letharia; Melanelia; Pseudophebe minuscula] by Ryan, B.D., Nash, T.H. III

“…The lichen floras of selected wilderness areas in California are being surveyed to provide baseline data for monitoring air pollution. A small number of…”
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The uptake of gaseous sulphur dioxide by non-gelatinous lichens by GRIES, CORINNA, SANZ, MARIA-JOSE, ROMAGNI, JOANNE G., GOLDSMITH, STEVEN, KUHN, UWE, KESSELMEIER, JÜRGEN, NASH III, THOMAS H.

“…In two open, flow-through systems 11 lichen species were fumigated with concentrations between 0·036 and 2·0 ppm (c. 94·3–5240 μg m−3) SO2. Sulphur dioxide…”
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Dose-response relationships for SO2 fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach by Sanz, M.J, Gries, C, Nash, T.H. III

“…SUMMARY Sulphur dioxide fumigation of the lichens Evernia prunastri (L.) Ach and Ramalina fraxinea (L.) Ach, whose thallus water content was held at 100‐120%,…”
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The relation of H2S release to SO2 fumigation of lichens by GRIES, CORINNA, ROMAGNI, JOANNE G., NASH III, THOMAS H., KUHN, UWE, KESSELMEIER, JÜRGEN

“…Hydrogen sulphide emission in lichens as a response to low concentration SO2 fumigation was investigated. In an open flow-through system several lichen species…”
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Preliminary study of the lichens of Mesa Verde National Park by Nash, T.H. III

“…On the basis of collections made at 6 locations within Mesa Verde National Park, 150 species, three varieties and one form within 52 genera of lichenized fungi…”
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Responses of lichens to salinity: concentration and time-course relationships and variability among Californian species by Nash, T.H. III, Lange, O.L

“…Sensitivity to salinity varied widely among 12 Californian lichen species occurring along a coastal to inland gradient, with the degree of sensitivity being…”
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New species and new records of Lecanora s.str. from western North America by Lumbsch, H.T. (Universitat Essen, Essen, Germany.), Nash, T.H. III

“…Two saxicolous species of Lecanora are described as new to science. Lecanora brodoana Lumbsch & Nash from Mexico and southwestern USA contains usnic acid,…”
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Growth patterns in Ramalina menziesii in California: coastal vs. inland populations by Boucher, V.L. (University of California, Berkeley), Nash, T.H. III

“…The fruticose lichen Ramalina menziesii varies morphologically across its range in central, coastal California: The thallus is thin and filamentous near the…”
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Studies in the Umbilicaria vellea group (Umbilicariaceae) in North America by Poelt, J, Nash, T.H. III

“…The name Umbilicaria vellea has been applied to several taxa, but herein the taxon is circumscribed as a Holarctic species of Europe and North America with two…”
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Three new lichens from the southwest [North America]: Xanthoria concina sp. nov., Lecanora collatolica sp. nov. and Toninia conglomerata by Thomson J.W, Nash T.H. III

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Lecanora section Placodium (lichenized Ascomycotina) in North America: new taxa in the L. garovaglii group by Ryan, B.D, Nash, T.H. III

“…The Lecanora garovaglii group (subg. Placodium sect. Placodium) typically has inflated, sinuous and plicate lobes, and the upper cortex lacks distinct conical…”
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Lichen communities on conifers in southern California mountains: an ecological survey relative to oxidant air pollution [Effects of smog] by Sigal, Lorene L., Nash, Thomas H.

“…In comparison with collections from the early 1900's when oxidant air pollution was essentially absent, 50% fewer lichen species were found on conifers during…”
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Salt loading does not control CO2 exchange in Ramalina menziesii Tayl by Matthes-Sears, U, Nash, T.H. III, Larson, D.W

“…Summary The effect of intrathallus salt content (measured as [Na+]) on photosynthetic and dark respiratory rates in the coastal lichen Ratnalina menziesii…”
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Radial growth and habitat selection by morphologically similar chemotypes of Xanthoparmelia by Benedict, J.B. (Center for Mountain Archeology, Ward, CO), Nash, T.H. III

“…Lichens in the genus Xanthoparmelia were studied at altitudes of 2,545-2,570 m on the East Slope of the Colorado Front Range. Xanthoparmelia lineola (Berry)…”
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