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Author: Nash

  • Nash, TH", III 1971: Lichen sensitivity to hydrogen fluoride. - Bull. Torrey Bot. Club 98: 103-106. [RLL List # 79 / Rec.# 13371]
    Keywords: HYDROGEN FLUORIDE/ AIR POLLUTION
    Abstract: 2 tab.
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  • Nash, TH", III 1972: Simplification of the Blue Mountain lichen communities near a zinc factory. - The Bryologist 75: 315-324. [RLL List # 83 / Rec.# 13372]
    Keywords: ECOLOGY/ BLUE MOUNTAIN/ AIR POLLUTION/ ZINC/ HEAVY METALS
    Abstract: 1 fig. 3 tab.
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  • Nash, TH, " III 1973: The effect of air pollution on other plants, particularly vascular plants. - In: B. W. Ferry, M. S. Baddeley & D. L. Hawksworth (eds.): Air Pollution and Lichens. University of Toronto Press, Toronto, pp. 192-223. [RLL List # 86 / Rec.# 13396]
    Keywords: AIR POLLUTION/ VASCULAR PLANTS
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  • Nash, TH", III 1973: Additions to the lichen flora of Arizona I. - The Bryologist 76: 545-548. [RLL List # 88 / Rec.# 13373]
    Keywords: ARIZONA / USA / FLORA
    Abstract: [51 species.]
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  • Nash, TH", III 1973: Two new species of Xanthoparmelia from Arizona. - The Bryologist 76: 214-216. [RLL List # 85 / Rec.# 13375]
    Keywords: ARIZONA/ XANTHOPARMELIA/ NEW TAXA
    Abstract: 2 fig. [New: Parmelia dissensa sp. nov. and P. huachucensis sp. nov.]
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  • Nash, TH", III / Weber, WA 1974: Additions to the lichen flora of Arizona II. - The Bryologist 77: 472-474. [RLL List # 93-91 / Rec.# 12893]
    Keywords: ARIZONA
    Abstract: [33 taxa. This paper was previously cited and incorrectly attributed to W.A. Weber alone.]
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  • Nash, TH", III 1974: Chemotaxonomy of Arizonan lichens of the genus Parmelia subgen. Xanthoparmelia. - Bull. Torrey Bot. Club 101: 317-325. [RLL List # 93-89 / Rec.# 13376]
    Keywords: PARMELIA/ NEW TAXA/ XANTHOPARMELIA/ ARIZONA/ KEY
    Abstract: 16 fig. [22 species; key. New Xanthoparmelia nigropsoromifera sp. nov.]
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  • Nash, TH", III 1974: Lichens of the Page environs as potential indicators of air pollution. - Jour. Arizona Acad. Sci. 9: 97-101. [RLL List # 91 / Rec.# 13377]
    Keywords: AIR POLLUTION / ARIZONA / UTAH / FLORA / USA
    Abstract: [147 species from Arizona and Utah.]
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  • Nash, TH", III 1974: New and additional Xanthoparmelia from New Mexico. - The Bryologist 77: 72-73. [RLL List # 89 / Rec.# 13378]
    Keywords: NEW TAXA/ XANTHOPARMELIA/ NEW MEXICO/ USA/ FLORA
    Abstract: [New: Parmelia joranadia sp. nov.]
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  • Nash, TH" III/ White, S/ Nash, EH 1974: Composition and biomass contribution of lichen and moss communities in the hot desert ecosystems. - In: : US/IBP Dersert Biome, Research Memorandum. 74-19. Ecology Center, Utah State Univ., Logan, pp. 159-165. [RLL List # 91 / Rec.# 13347]
    Keywords: DESERT / BIOMASS / COMMUNITY ECOLOGY
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  • Nash, TH", III/ Johnsen, AB 1975: Catalog of the lichens of Arizona. - The Bryologist 78: 7-24. [RLL List # 92-58 / Rec.# 13355]
    Keywords: ARIZONA/ CHECKLIST/ CATALOG
    Abstract: [474 taxa.]
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  • Nash, TH", III 1975: Lichens of Maricopa County, Arizona. - Jour. Arizona Acad. Sci. 10: 119-125. [RLL List # 95 / Rec.# 13381]
    Keywords: ARIZONA/ MARICOPA COUNTY/ USA/ DESERT/ KEYS
    Abstract: 1 figure. 1 table. [78 species; keys.]
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  • Nash, TH", III 1976: Lichens as indicators of air pollution. - Naturwissenschaften 63: 364-367. [RLL List # 95 / Rec.# 13382]
    Keywords: AIR POLLUTION/ REVIEW
    Abstract: 1 figure. [Review with 64 references.]
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  • Nash, TH", III 1976: Sensitivity of lichens to nitrogen dioxide fumigations. - The Bryologist 79: 103-106. [RLL List # 95 / Rec.# 13383]
    Keywords: NITROGEN DIOXIDE/ OXIDANTS/ AIR POLLUTION
    Abstract: 1 figure.
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  • Thomson, JW/ Nash, TH", III 1976: Three new lichens from the Southwest: Xanthoria concinna sp. nov., Lecanora collatolica sp. nov. and Toninia conglomerata. - The Bryologist 79: 350-353. [RLL List # 95 / Rec.# 18442]
    Keywords: XANTHORIA/ NEW TAXA/ ARIZONA/ MEXICO/ TONINIA/ LECANORA
    Abstract: 3 figures. [New: Xanthoria concinna sp. nov., Lecanora collatolica sp. nov.]
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  • Nash, TH, III 1977: Lichenes Exsiccati, Distributed by Arizona State University, Fasc. 1 (No. 1-25), Fasc. 2 (No. 26-50). - Tempe, Arizona. 10 pp. [RLL List # 173 / Rec.# 13410]
    Keywords: ARIZONA/ EXSICCAT
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  • Nash, TH", III 1977: Lichenes Exsiccati. - Distributed by Arizona State University. Fasc. 1-2. 21 November 1977. 10 unnumbered pp. [RLL List # 102-50 / Rec.# 13384]
    Keywords: EXSICCAT/ NASH
    Abstract: [labels for nos. 1-50 in this new exsiccat.]
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  • Nash, TH", III 1977: Lichens of the White Mountains, Arizona. - Jour. Arizona Acad. Sci. 12: 53-56. [RLL List # 98 / Rec.# 13385]
    Keywords: ARIZONA/ LEPTOGIUM
    Abstract: 1 figure. 1 table. [244 species. Leptogium leceroides B. de Lesd. new to the United States.]
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  • Nash, TH", III/ White, SL/ Marsh, JE 1977: Lichen and moss distribution and biomass in hot desert ecosystems. - The Bryologist 80: 470-479. [RLL List # 99 / Rec.# 13368]
    Keywords: DESERTS/ DISTRIBUTION/ ECOLOGY/ BIOMASS
    Abstract: 1 figure. 4 tables.
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  • Nash, TH", III/ Zavada, M 1977: Population studies among Sonoran Desert species of Parmelia subgen. Xanthoparmelia (Parmeliaceae). - Amer. Jour. Bot. 64: 664-669. [RLL List # 98 / Rec.# 13370]
    Keywords: PARMELIA/ XANTHOPARMELIA/ SONORAN DESERT/ SAXICOLOUS/ ECOLOGY/ POPULATIONS
    Abstract: 2 figures. 2 tables. [Sympatric chemotypes distributed nonrandomly on rocks of different chemical composition.]
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  • Moser, TJ/ Nash, TH", III 1978: Photosynthetic patterns of Cetraria cucullata (Bell.) Ach. at Anaktuvuk Pass, Alaska. - Oecologia [Berlin] 34: 37-43. [RLL List # 102-49 / Rec.# 13087]
    Keywords: ALASKA/ PHOTOSYNTHESIS/ WATER RELATIONS/ CETRARIA
    Abstract: 1 figure. ["With the exception of rainly periods, the lichen exhibited a strong diurnal pattern with peak photosynthetic activity occurring between 0300 and 0700 h. This correlated with periods of maximal lichen water retention and the presence of direct solar radiation. When the lichen was moist, a strong gradient in photosynthetic acitivity was observed with no activity in the lichen bases and maximal activity in the lichen tips."]
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  • Nash, TH", III 1978: [Review of:] T. De Wit: Epiphytic Lichens and Air Pollution in the Netherlands. J. Cramer, Vaduz. 1976. - The Bryologist 81: 352. [RLL List # 101-57 / Rec.# 13386]
    Keywords: AIR POLLUTION/ REVIEW/ NETHERLANDS
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  • Culberson, CF/ Nash, TH" III/ Johnson, A 1979: 3-a-hydroxybarbatic acid, a new depside in chemosyndromes of some Xanthoparmeliae with B-orcinol depsides. - The Bryologist 82: 154-161. [RLL List # 104-23 / Rec.# 3760]
    Keywords: CHEMOSYNDROME/ XANTHOPARMELIA/ DEPSIDE/ 3-A-HYDROXYBARBATIC/ MEXICO
    Abstract: 7 figures. 1 table. [New: Xanthoparmelia moctezumensis Nash sp. nov. Includes distributional and chemical data on X. ajoensis and X. tucsonensis as well.]
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  • Marsh, JE/ Nash, TH" III 1979: Lichens in relation to the Four Corners Power Plant in New Mexico. - The Bryologist 82: 20-28. [RLL List # 103-57 / Rec.# 12275]
    Keywords: AIR POLLUTION/ NEW MEXICO/ SO2/ FOUR CORNERS/ DESERT
    Abstract: 3 figures. 1 table. [159 species in 40 genera are reported. Although the SO2 levels are relatively high in the area, the lichens so far seem unaffected. Authors contend that the aridity of the area and dominance of resistant crustose forms explain the departure of the results from previous air pollution studies.]
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  • Moser, TJ/ Nash, TH" III/ Thomson, JW 1979: Lichens of Anaktuvuk Pass, Alaska, with emphasis on the impact of caribou grazing. - The Bryologist 82: 393-408. [RLL List # 105-60 / Rec.# 13084]
    Keywords: ALASKA/ CARIBOU/ GRAZING/ ASPICILIA/ NEW TAXA
    Abstract: 2 figures. 1 table. [288 species in 71 genera are reported for the area. New: Aspicilia plicigera (Zahlbr.) Thoms., comb. nov. and A. sublapponica (Zahlbr.) Thoms., comb. nov. Both "new combinations, " however, are invalid since the proper citations were not included after listing of the basionyms (Article 33). The combination Aspicilia plicigera (Zahlbr.) Ras. has been published previously. Caribou grazing during the winter severly reduced lichen biomass in certain areas of the region.]
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  • Nash, TH" III/ Dibben, MJ 1979: On the ethics of group lichen collecting. - Internatinal Lichenological Newsletter 12: 1-3. [RLL List # 103-66 / Rec.# 13345]
    Keywords: EDITORIAL/ COLLECTING/ COSTA RICA/ ETHICS
    Abstract: [Editorial.]
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  • Nash, TH", III/ Nebeker, GT/ Moser, TJ/ Reeves, T 1979: Lichen vegetational gradients in relation to the Pacific coast of Baja California: the maritime influence. - Madrono 26: 149-163. [RLL List # 105-61 / Rec.# 13363]
    Keywords: MEXICO/ BAJA CALIFORNIA/ RAMALINA/ ROCCELLA/ WATER RELATIONS/ PHOTOSYNTHESIS
    Abstract: 3 tables. 4 figures. [Transect studies and water retention and loss experiments, primarily with Ramalina complanata and Roccella babingtonii, show that the coastal species (Roccella) is adapted to moister conditions. Peak photosynthesis for this taxon is about 70% thallus saturation while the peak for Ramalina complanata was about 30-40% thallus saturation.]
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  • Nash, TH", III/ Sigal, LL 1979: Gross photosynthetic response of lichens to short-term ozone fumigations. - The Bryologist 82: 280-285. [RLL List # 104-76 / Rec.# 13365]
    Keywords: PARMELIA/ HYPOGYMNIA/ OZONE/ AIR POLLUTION/ CALIFORNIA/ PHOTOSYNTHESIS/ FUMIGATION
    Abstract: 1 figure. [Parmelia sulcata and Hypogymnia enteromorpha from San Diego County, California, were subjected to 12 hour ozone fumigations at three different concentrations. Significant reduction in gross photosynthesis was documented. P. sulcata was more sensitive to the treatments than was H. enteromorpha, "... a fact consistent with field observations in southern California where extensive ozone injury occurs."]
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  • Moser, TJ/ Nash, TH" III/ Clark, WD 1980: Effects of a long-term sulfur dioxide fumigation on arctic caribou forage lichens. - Canadian Journal of Botany 58: 2235-2240. [RLL List # 108-64 / Rec.# 13083]
    Keywords: ALASKA/ CARIBOU/ SO2/ PHOTOSYNTHESIS
    Abstract: 3 tables. 1 figure. [Study conducted at Anaktuvuk Pass, Alaska. "The photosynthetic capabilities of the test species were either destroyed or significantly reduced depending upon the SO2 stress gradient over the fumigation plot." Sampling 1 year later showed no significant recovery.]
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  • Nash, TH", III/ Moser, TJ/ Link, SO 1980: Nonrandom variation of gas exchange within arctic lichens. - Canadian Journal of Botany 58: 1181-1186. [RLL List # 107-52 / Rec.# 13361]
    Keywords: PHOTOSYNTHESIS/ GAS EXCHANGE/ ARCTIC/ CLADONIA/ PARMELIA/ CLADINA
    Abstract: 2 tables. 3 figures. ["The highest rates of both photosynthesis and respiration occur in the youngest, actively growing sections of the thalli and both parameters decrease progressively into older sections." Studies on Cladonia rangiferina, C. stellaris and Parmelia separata were conducted at Anaktuvuk Pass, Alaska.]
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  • Nash, TH", III/ Sigal, LL 1980: Sensitivity of lichens to air pollution with an emphasis on oxidant air pollutants. - In: P. R. Miller (ed.): Proceedings of the Symposium on Effects of Air Pollution on Mediterranean and Temperate Forest Ecosystems, June 22-27, 1980, Riverside, California, U. S. A. Gen. Tech. Rep. PSW-43, Pacific Southwest Forest and Range Experiment Station, Forest Service, U. S. Department of Agriculture, Berkley, pp. 117-124. [RLL List # 112-51 / Rec.# 13366]
    Keywords: AIR POLLUTION/ OXIDANTS/ CALIFORNIA/ SAN BERNARDINO MOUNTAINS
    Abstract: 2 figures. 1 table. [General review with special empahsis on recent studies in the San Bernardino Mountains of southern California.]
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  • Nash, TH, ", III/ Sigal, LL 1981: Preliminary study of the lichens of Zion National Park, Utah. - Journal of the Arizona-Nevada Academy of Science 16: 46-50. [RLL List # 121-66 / Rec.# 13397]
    Keywords: OWN/ UTAH/ ZION NATIONAL PARK/ AIR POLLUTION
    Abstract: 1 figure. [Authors report 159 species in 53 genera; four are new records for Utah. "Potential for air pollution injury to the lichen vegetation is high because a new coal-fired power generating plant is proposed 30 km downstream from the canyon."]
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  • Nash, TH", III 1981: [Review of:] M. J. Dibben: The Chemosystematics of the Lichen Genus Pertusaria in North America North of Mexico. Milwaukee Public Museum, Milwaukee. 1980. - The Bryologist 84: 597. [RLL List # 113-67 / Rec.# 13387]
    Keywords: REVIEW
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  • Nash, TH" III/ Sigal, L 1981: Ecological approaches to use of lichenized fungi as indicators of air pollution. - In: D. T. Wicklow & G. C. Carroll (eds.): The Fungal Community: Its Organization and Role in the Ecosystem. , pp. 481-497. [RLL List # 123-87 / Rec.# 13346]
    Keywords: AIR POLLUTION/ OWN/ CALIFORNIA/ ECOLOGY/ REVIEW/ TOLERANCE
    Abstract: 6 figures. ["In areas where pollution sources have existed for a number of years, distinct patterns reflecting differential sensitivity to the pollutants are apparent on the basis of species richness considerations. Thus sensitive species are excluded from areas with high air pollutant concentrations; these niches are then often filled by tolerant species. Finer resolution of the patterns may be obtained by quantitatively documenting the abundance and/or relative vitality of species. By employing this aproach together with modern multivariate analysis procedures it is possible to detect patterns developing in lichenized fungal populations in areas where air pollution has been present for a comparatively short time."]
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  • Nash, TH", III/ Sommerfeld, MR 1981: Elemental concentrations in lichens in the area of the Four Corners Power Plant, New Mexico. - Environmental and Experimental Botany 21: 153-162. [RLL List # 112-52 / Rec.# 13367]
    Keywords: NEW MEXICO/ HEAVY METALS/ AIR POLLUTION/ FLY ASH/ FLUORINE
    Abstract: 3 tables. 1 figure. ["Within a several kilometre radius of the Four Corners Power Plant, lichen species had elevated concentrations of B, F, Li and Se compared with lichens of more remote sites. The elements Ba, Cu, Mn and Mo were found in elevated concentrations, but only in one lichen species. The patterns of elements occurring in both elevated and non-elevated levels correspond very closely to published chemical data on enrichment ratios and elemental solubility for post-precipitator fly ash. Within a 2 km radius F was found in concentrations potentially toxic to lichens."]
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  • Nash, TH, " III/ Moser, TJ/ Bertke, CC/ Link, SO/ Sigal, LL/ White, SL/ Fox, CA 1982: Photosynthetic patterns of Sonoran Desert lichens I. Environmental considerations and preliminary field measurements. - 172: 335-345. [RLL List # 115-53 / Rec.# 13395]
    Keywords: SONORAN DESERT/ PHOTOSYNTHESIS/ MICROCLIMATE/ PRECIPITATION/ WATER RELATIONS/ NEGEV DESERT/ ISRAEL
    Abstract: ["Preliminary photosynthetic measurements over 28 d confirmed that days with photosynthetic activity are tightly coupled with precipitation events." Comparisons are made with similar studies in the Negev Desert.]
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  • Nash, TH", III/ Lange, OL/ Kappen, L 1982: Photosynthetic patterns of Sonoran Desert lichens II. A multivariate laboratory analysis. - Flora 172: 419-426. [RLL List # 118-60 / Rec.# 13358]
    Keywords: PHOTOSYNTHESIS/ SONORAN DESERT/ PARMELIA/ XANTHOPARMELIA/ ACAROSPORA/ LIGHT/ TEMPERATURE/ ADAPTATION
    Abstract: 2 figures. [Study on Parmelia kurokawae and Acarospora schleicheri during drying under four light regimes and five temperatures. "The relatively low temperature optima reflect the fact that the lichens are most active in winter, particularly in early morning hours."]
    [Edit/Delete] [Upload PDF/URL] [ET: 1043]

  • Nash, TH", III/ Moser, TJ 1982: Vegetational and physiological paterns of lichens in North American deserts. - Journal of the Hattori Botanical Laboratory 53: 331-336. [RLL List # 118-61 / Rec.# 13362]
    Keywords: DESERTS/ WATER RELATIONS/ ECOPHYSIOLOGY/ REVIEW/ NORTH AMERICA
    Abstract: 1 table. [General review comparing interior desert regions with Pacific coastal desert regions.]
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  • Moser, TJ/ Nash, TH", III/ Link, SO 1983: Dirunal gross photosynthetic patterns and potential seasonal CO2 assimilation in Cladonia stellaris and Cladonia rangiferina. - Canadian Journal of Botany 61: 642-655. [RLL List # 118-57 / Rec.# 13085]
    Keywords: PHOTOSYNTHESIS/ CLADONIA/ ALASKA/ WATER RELATIONS/ ECOLOGY/ PHYSIOLOGY/ TUNDRA/ ARCTIC
    Abstract: 15 figures. 2 tables. [Studies carried out at Anaktuvuk Pass, Alaska, concluded that "... photosynthetic activity in both species closely paralleled atmospheric moisture status, where peak photosynthetic rates were attained during or following sporatic summer rain. In addition, thallus absorption of moisture during extended periods of high atmospheric water vapor content gave rise to short periods of minimal photosynthetic activity." Greatest photosynthetic activity was measured in apical portions of the thalli.]
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  • Moser, TJ/ Nash, TH", III/ Olafsen, AG 1983: Photosynthetic recovery in arctic caribou forage lichens following a long-term field sulfur dioxide fumigation. - Canadian Journal of Botany 61: 367-370. [RLL List # 118-58 / Rec.# 13086]
    Keywords: SO2/ CETRARIA/ CLADONIA/ FUMIGATION/ PHOTOSYNTHESIS/ RECOVERY/ ALASKA
    Abstract: 2 tables. [Three-year study carried out at Anaktuvuk Pass, Alaska, using Cladonia stellaris, C. rangiferina and Cetraria cucullata. "The lichen vegetation which had experienced the greatest SO2 stress during the 1978 fumigation remained photosynthetically inactive. Significant photosynthetic recovery was discovered in the test species which had experienced sublethal concentrations of SO2; however, their photosynthetic capacities remained less than controls."]
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  • Moser, TJ/ Swafford, JR/ Nash, TN", III 1983: Impact of Mount St. Helens' emissions on two lichen species of south-central Washington. - Environmental and Experimental Botany 23: 321-329. [RLL List # 120-96 / Rec.# 13088]
    Keywords: VOLCANIC ASH/ LOBARIA/ PELTIGERA/ WASHINGTON/ MINERAL/ PHOTOSYNTHESIS / POSTASSIUM
    Abstract: 2 figures. 3 tables. [Lobaria oregana and Peltigera aphthosa had reduced levels of internal potassium, phosphorus, and photosynthetic capability.]
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  • Nash, TH", III/ Moser, TJ/ Link, SO/ Ross, LJ/ Olafsen, A/ Matthes, U 1983: Lichen photosynthesis in relation to CO2 concentration. - Oecologia 58: 52-56. [RLL List # 118-62 / Rec.# 13360]
    Keywords: PHOTOSYNTHESIS/ CO2 CONCENTRATION/ PHYSIOLOGY
    Abstract: 1 figure. [All six species tested showed "...a linear range of CO2 values, but little photosynthetic variation with increasing CO2 concentrations at the upper range of CO2 vlaues." Results are similar to those for higher plants.]
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  • Ross, LJ/ Nash, TH", III 1983: Effect of ozone on gross photosynthesis of lichens. - Environmental and Experimental Botany 23: 71-77. [RLL List # 118-71 / Rec.# 15897]
    Keywords: OZONE/ AIR POLLUTION/ PHOTOSYNTHESIS/ FUMIGATION/ PSEUDOPARMELIA/ RAMALINA/ CALIFORNIA/ ECOLOGY/ PHYSIOLOGY
    Abstract: 3 figures. [The effects of long-term and short-term fumigations were studied on Pseudoparmelia caperata and Ramalina menziesii with special reference to the Santa Monica Mountains of southern California. "From results of these laboratory studies, it is inferred that ozone is contributing to the unusually low lichen cover observed in the field. However, the absence of R. menziesii from these mountains appears to be independent of ozone pollution."]
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  • Sigal, Lorene L/ Nash, TH ", III 1983: Lichen communities on conifers in southern California: an ecological survey relative to oxidant air pollution. - Ecology 64: 1343-1354. [RLL List # 120-123 / Rec.# 17303]
    Keywords: COMMUNITIES/ ECOLOGY/ CALIFORNIA/ AIR POLLUTION/ OXIDANTS/ TRANSPLANTS
    Abstract: 9 tables. 5 figures. [Authors report a 50% decline in lichen diversity since the early 1900's, and "...at sites with high oxidant levels, marked morphological deterioration of the common species Hypogymnia enteromorpha was documented." Transplants showed marked deterioration after a year's exposure in the San Bernardino Mountains.]
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  • Link, SO/ Moser, TJ/ Nash, TH", III 1984: Relationships among initial rate, closed chamber, and 14CO2 techniques with respect to lichen photosynthetic CO2 dependencies. - Photosynthetica 18: 90-99. [RLL List # 124-71 / Rec.# 11538]
    Keywords: PHOTOSYNTHESIS/ CO2 DEPENDENCIES/ TECHNIQUES/ PARMELIA/ ARIZONA
    Abstract: 1 table. 4 figures. [Study done on Parmelia praesignis from Arizona, showed that CO2 " ... dependencies were the same in contrast to the wide differences found in earlier reports. Net gas exchange and 14CO2 methods were empirically compared with the conclusion that curvature relationships are statistically indistinguishable."]
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  • Link, SO/ Nash, TH", III 1984: A mathematical description of the effect of resaturation on net photosynthesis in the lichen, Parmelia praesignis Nyl. - New Phytologist 96: 257-262. [RLL List # 121-56 / Rec.# 11539]
    Keywords: PHOTOSYNTHESIS/ PARMELIA/ RESATUATION/ WATER RELATIONS/ OWN
    Abstract: 2 figures. 1 table. ["Less than 2 h was required for full recovery of phytosynthetic ability after having been dry for at least 5 weeks. The resaturation phenomenon is mathematically described for the first time as a negative exponential from which parameters can be derived for maximal net photosynthetic rate, maximal velocity and the velocity at the half-time for recovery."]
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  • Link, SO/ Nash, TH", III 1984: An analysis of an arctic lichen community with respect to slope on silicious rocks at Anaktuvuk Pass, Alaska. - The Bryologist 87: 162-166. [RLL List # 121-57 / Rec.# 11540]
    Keywords: ALASKA/ OWN/ COMMUNITY STRUCTURE/ ARCTIC/ SAXICOLOUS
    Abstract: 2 figures. 1 table. [The distribution of foliose, fruticose and crustose forms was studied in relation to the degree of surface slope. Foliose species dominated the 0 deg. and 30 deg. slopes while crustose and foliose lichens were equally common on 60 deg. slopes. Vertical surfaces were dominated by crustose forms.]
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  • Link, SO/ Nash, TH", III 1984: Ecophysiological studies of the lichen, Parmelia praesignis Nyl. Population variation and the effect of storage conditions. - New Phytologist 96: 249-256. [RLL List # 121-58 / Rec.# 11541]
    Keywords: PARMELIA/ OWN/ PHOTOSYNTHESIS/ WATER RELATIONS/ TEMPERATURE
    Abstract: 1 table. 2 figures. ["Storage -hydration and temperature regimes have been shown to cause losses in phytosynthetic ability over time. Variable temperatures within the range occurring naturally for the species in the field, with wetting every few days, was least detrimental, while constant temperatures and daily soaking proved to be most detrimental."]
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  • Link, SO/ Nash, TH", III 1984: The influence of water on CO2 exchange in the lichen Parmelia praesignis Nyl. - Oecologia 64: 204-210. [RLL List # 124-72 / Rec.# 11542]
    Keywords: PARMELIA/ FLAVOPUNCTELIA/ ARIZONA/ PHOTOSYNTHESIS/ WATER RELATIONS/ LIGHT EFFECTS/ CO2 EXCHANGE
    Abstract: 2 figures. 1 table. [Net photosynthetic rates for Arizonan specimens " ... were obtained as a function of 5 light levels, 5 temperature levels, and of water content as thalli dried from saturated conditions. The greatest maximal net photosynthetic rate occurred at higher temperatures as the light intensity increased. In the light, maximal water efficiency and sensitivity to changes in water content were generally maximal at tempertures yielding the greatest maximal net photosynthetic rates."]
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  • Nash, TH", III 1984: [Review of:] M. E. Hale, Jr.: The Biology of Lichens. 3rd Edition. Edward Arnold, Baltimore. 1983. - The Bryologist 87: 181. [RLL List # 121-65 / Rec.# 13388]
    Keywords: REVIEW/ OWN
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  • Henssen, A/ Budel, B/ Nash, TH", III 1985: Three new species of Lichinella described from Mexico. - The Bryologist 88: 285-292. [RLL List # 127-77 / Rec.# 8277]
    Keywords: LICHINELLA/ MEXICO/ NEW TAXA/ KEY/ PORTUGAL/ SPAIN/ USA/ ARIZONA
    Abstract: 31 figures. [New: Lichinella intermedia sp. nov., L. flexa sp. nov., and L. robustoides sp. nov. New distributional records are also reported for L. americana, L. robusta and L. stipatula.]
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  • Link, SO/ Driscoll, MF/ Nash, TH" III 1985: CO2 exchange in lichens: towards a mechanistic model. - In: D. H. Brown (ed.): Lichen Physiology and Cell Biology. Plenum Press, New York and London, pp. 77-91. [RLL List # 127-114 / Rec.# 11537]
    Keywords: CO2 EXCHANGE/ PHOTOSYNTHESIS/ MODEL/ PARMELIA
    Abstract: 6 figures. 1 table. ["The multivariate models given here, whether for net photosynthesis or its components, carboxylation rate and dark respiration, are, of course, just initial advances towards a multi-dimensional understanding of lichen gas exchange." Most of the work reported used Parmelia praesignis as the experimental organism.]
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  • Nash, TH", III 1985: Additions to the lichen flora of Arizona III. - The Bryologist 88: 19-22. [RLL List # 124-77 / Rec.# 13389]
    Keywords: ARIZONA/ HYPOTRACHYNA/ NEW TAXA/ PYXINE/ OWN
    Abstract: [Author reports 72 new additions to the lichen flora of Arizona including Pyxine chrysanthoides, Hypotrachyna subsaxatilis (both new to the United States) and H. polydactyla (first report from the New World). New: Hypotrachyna polydactyla (Krog & Swinscow) comb. nov.]
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  • Nash, TH", III 1985: [Review of:] D. L. Hawksworth & D. J. Hill: The Lichen-forming Fungi. Methuen, Inc., New York. 1984. - The Bryologist 88: 424-425. [RLL List # 127-127 / Rec.# 13390]
    Keywords: REVIEW
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  • Larson, DW/ Matthes-Sears, U/ Nash, TH", III 1986: The ecology of Ramalina menziesii. I. Geographical variation in form. - Canadian Journal of Botany 63: 2062-2068. [RLL List # 128-67 / Rec.# 11099]
    Keywords: ECOLOGY/ POPULATIONS/ RAMALINA/ MORPHOLOGY/ GRADIENTS/ CALIFORNIA/ OREGON/ MEXICO
    Abstract: 2 tables. 6 figures. [Morphological variation in Ramalina menziesii from Baja California to British Columbia especially regarding the number of perforations present in 15 mm long net buds. "When this measure was plotted against distance inland and latitude of origin, some clear trends emerged. Most conspicuous was that proximity to the coast was correlated with very few perforations per net." Other factors were also analyzed.]
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  • Larson, DW/ Matthes-Sears, U/ Nash, TH", III 1986: The ecology of Ramalina menziesii. II. Variation in water relations and tensile strength across an inland gradient. - Canadian Journal of Botany 64: 6-10. [RLL List # 128-68 / Rec.# 11100]
    Keywords: ECOLOGY/ WATER RELATIONS/ POPULATIONS/ CALIFORNIA/ TENSILE STRENGTH/ GRADIENTS/ MORPHOLOGY/ ADAPTATIONS
    Abstract: 4 figures. 2 tables. [Authors found that "... the presence of elevated intrathallus concentrations of NaCl found near the coast is mainly responsible for the small differences in wetting and drying characteristics. It further implies that the morphological variation seen in the field is not an adaptation to the conditions near the coast but, rather, is the imposed result of a permanently moist, cool, and salty environment."]
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  • Matthes-Sears, U/ Nash, TH", III/ Larson, DW 1986: The ecology of Ramalina menziesii. III. In situ diurnal field measurements at two sites on a coast-inland gradient. - Canadian Journal of Botany 64: 988-996. [RLL List # 128-72 / Rec.# 12439]
    Keywords: ECOLOGY/ RAMALINA/ CALIFORNIA/ WATER RELATIONS/ PHOTOSYNTHESIS/ CO2 FIXATION/ GROWTH/ POPULATIONS/ GRADIENTS
    Abstract: 1 table. 3 figures. [CO2 uptake and water content were studied at sites in California. "At the inland site, CO2 fixation was concentrated in the rainy winter season and very little CO2 fixation took place during the hot summers. In contrast, fog and high atmospheric humidity that frequently occur during summers at the coast provided sufficient moisture for frequent photosynthetic activity, thus resulting in intermittent activity throughout the year."]
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  • Matthes-Sears, U/ Nash, TH", III/ Larson, DW 1986: The ecology of Ramalina menziesii. IV. In situ photosynthetic patterns and water relations of reciprocal trnsplants between two sites on a coastal-inland gradient. - Canadian Journal of Botany 64: 1183-1187. [RLL List # 128-73 / Rec.# 12440]
    Keywords: ECOLOGY/ RAMALINA/ CALIFORNIA/ WATER RELATIONS/ PHOTOSYNTHESIS/ TRANSPLANTS/ GROWTH/ POPULATIONS/ GRADIENTS
    Abstract: 1 table. 4 figures. ["The comparison showed that thallus water content of the two morphological forms was not significantly different when atmospheric humidity was low. In a humid atmosphere, however, the coastal samples maintained a slightly higher hydration level than the inland samples. This resulted in slightly higher photosynthetic rates when water content was low. At higher hydration levels, the inland samples photosynthesized at a higher rate than the coastal samples. It is possible that these differences are an effect of increased salt load in coastal thalli."]
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  • Matthes-Sears, U/ Nash, TH", III 1986: A mathematical description of the net photosynthetic response to thallus water content in the lichen Ramalina menziesii. - Photosynthetica 20: 377-384. [RLL List # 132 / Rec.# 12443]
    Keywords: PHOTOSYNTHESIS/ MODELS/ RAMALINA/ CALIFORNIA/ ECOPHYSIOLOGY/ CO2 UPTAKE/ WATER RELATIONS
    Abstract: 1 table. 1 figure. [Study of net CO2 uptake to thallus water content on two forms of Ramalina menziesii from California. "A mathematical description of the response curve was based on a piecewise nonlinear regression model, and biologically meaningful parameters were derived. The model was interpreted in terms of interacting resistance components to CO2 uptake."]
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  • Matthes-Sears, U/ Nash, TH", III 1986: The ecology of Ramalina menziesii. V. Estimation of gross carbon gain and thallus hydration source from diurnal measurements and climatic data. - Canadian Journal of Botany 64: 1698-1702. [RLL List # 128-71 / Rec.# 12444]
    Keywords: POPULATIONS/ ECOLOGY/ RAMALINA/ WATER RELATIONS/ CARBON GAIN/ PHOTOSYNTHESIS/ CALIFORNIA
    Abstract: 3 tables. 2 figures. [Experiments support the new hypothesis that the reticulations in growth form of Ramalina menziesii are not adaptations for more effiecient water absorption. "Water vapor uptake accounts for only an estimated 11% of gross annual carbon gain, but is likely to contribute greatly to respiratory losses during the night. Hence, it is very unlikely that so elaborate an adaptation would develop for such a questionable benefit."]
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  • Nash, TH", III/ Elix, JA 1986: A new species and new records in the lichen genus Xanthoparmelia (Vain.) Hale (Ascomycotina: Parmeliaceae) for North America. - Mycotaxon 26: 453-455. [RLL List # 128-78 / Rec.# 13352]
    Keywords: PARMELIACEAE/ NEW TAXA/ XANTHOPARMELIA/ ARIZONA/ MEXICO
    Abstract: [New: Xanthoparmelia maricopensis sp. nov.; X. oleosa (Elix & Armstrong) Elix & Nash, comb. nov.; X. neorimalis (Elix & Armstrong) Elix & Nash, comb. nov. The new species is reported from various sites in the southwestern United States and northern Mexico. Xanthoparmelia neorimalis has been found in Mexico and X. oleosa is reported from Mexico and Arizona.]
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  • Matthes-Sears, U/ Nash, TH", III/ Larson, D 1987: Salt loading does not control CO2 exchange in Ramalina menziesii Tayl. - New Phytologist 106: 59-69. [RLL List # 134 / Rec.# 12442]
    Keywords: SALT LOADING/ ECOPHYSIOLOGY/ RAMALINA/ CALIFORNIA
    Abstract: 3 tables. 3 figures. [Study on Ramalina menziesii from coastal California showed no relationship between rates of CO2 exchange between specimens with high or low salt concentrations, nor was there any correlation with individual trees within one coastal site compared with one inland site. Artificial manipulation of NA+ content did not change rates of CO2 exchange. "These results imply that the large variability in photosynthetic rates that is present in R. menziesii must be due to factors other than salinity."]
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  • Matthes-Sears, U/ Nash, TH", III/ Larson, DW 1987: The ecology of Ramalina menziesii. VI. Laboratory responses of net CO2 exchange to moisture, temperature, and light. - Canadian Journal of Botany 65(1): 182-191. [RLL List # 134 / Rec.# 12441]
    Keywords: PHOTOSYNTHESIS/ RAMALINA/ ECOPHYSIOLOGY/ CO2 EXCHANGE/ CALIFORNIA
    Abstract: 3 figures. 1 table. [Study of specimens from a coastal area (Point Lobos) and an inland site (Hastings) in California. "This study by itself shows significant differences between R. menziesii collected at Point Lobos and that collected at Hastings. These differences exist primarily in the photosynthetic apparatus with almost none found in the respiratory responses." Authors also conlcude, " ... the explanation for the strict coastal distribution of R. menziesii and the explanations of the gradient in its morphology from coastal sites to sites slightly inland may not depend on knowing very much about the details of the responses of gas exchange to the physical environment but rather on factors which have large-scale effects on the magnitude of real growth rates in the field, such as salt exposure, canopy type, and the duration of wetting."]
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  • Nash, TH", III/ Elix, JA/ Johnston, J 1987: Flavoparmelia ecuadoriensis, a new species in the Parmeliaceae (Ascomycotina). - Mycotaxon 28: 257-259. [RLL List # 130 / Rec.# 13350]
    Keywords: FLAVOPARMELIA/ PARMELIACEAE/ ECUADOR/ SOUTH AMERICA/ NEW TAXA
    Abstract: 1 figure. [New: Flavoparmelia ecuadoriensis sp. nov.]
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  • Nash, TH", III/ Elix, JA/ Johnston, J 1987: New species, new records and a key for Xanthoparmelia (lichenized Ascomycotina) from South America. - Mycotaxon 28: 285-296. [RLL List # 130 / Rec.# 13351]
    Keywords: SOUTH AMERICA/ XANTHOPARMELIA/ PARMELIACEAE/ NEW TAXA/ KEY/ ARGENTINA/ ECUADOR
    Abstract: 6 figures. [New: Xanthoparmelia adleri sp. nov., X. argentinensis sp. nov., X. cotopaxiensis sp. nov., X. ferraroiana sp. nov., X. villamiliana sp. nov., and X. wrightiana sp. nov., X. farinosa (Vainio) comb. nov. The new taxa and the new reports are from Argentina, Ecuador and Peru.]
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  • Nash, TH", III/ Elix, JA 1987: New species and new reports in the Parmeliaceae (lichenized Ascomycotina) from South Africa and Australia. - Mycotaxon 29: 467-476. [RLL List # 131 / Rec.# 13353]
    Keywords: PARMLIEACEAE/ HYPOTRACHYNA/ CANOPARMELIA/ PARAPARMELIA/ NEW TAXA/ AUSTRALIA/ SOUTH AFRICA/ XANTHOPARMELIA/ NAMIBIA
    Abstract: 6 figures. [New: Hypotrachyna colensoica Hale, Nash & Elix, sp. nov.; Paraparmelia norlobaridonica Nash & Elix, sp. nov.; P. olivetorica Nash & Elix, sp. nov.; P. xanthomelanoides Elix & Nash, sp. nov.; Xanthoparmelia bicontinens Elix & Nash, sp. nov.; X. shebaiensis Nash & Elix, sp. nov. Thirty additional Parmeliaceae are listed as new reports for southern Africa.]
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  • Nash, TH", III/ Kappen, L/ Losch, R/ Larson, DW/ Matthes-Sears, U 1987: Cold resistance of lichen with Trentepohlia- or Trebouxia-photobionts from the North American west-coast. - Flora 179: 241-251. [RLL List # 132 / Rec.# 13356]
    Keywords: TRENTEPOHLIA/ TREBOUXIA/ COLD RESISTANCE/ ROCCELLACEAE/ MEXICO/ ECOPHYSIOLOGY/ ALGAE/ PHOTOBIONTS
    Abstract: 1 table. 3 figures. [Six hour cold treatments of -5 to -78 C. "From these results and previous publications it is inferred that lichens in general from the Roccellaceae, a family characterized by species with Trentepohlia, are more susceptible to frost than lichens with Trebouxia." The results help to explain the general distribution pattern of the Roccellaceae.]
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  • Nash, TH", III/ Kappen, L/ Losch, R/ Matthes-Sears, U/ Larson, DW 1987: Cold resistance of lichens. - In: E. Peveling (ed.): Progress and Problems in Lichenology in the Eighties. Bibliotheca Lichenologica No. 25. J. Cramer, Berlin-Stuttgart, pp. 313-317. [RLL List # 131 / Rec.# 13357]
    Keywords: COLD RESISTANCE/ UMBILICARIA/ NIEBLA/ DENDROGRAPHA/ ECOPHYSIOLOGY/ TRENTEPOHLIA
    Abstract: 1 figure. ["Lichens are quite frost resistant in comparison with other plant groups. Nevertheless, a wide range in degree of frost resistance exists among species, the most frost susceptible of which are apparently the Trentepohlia-containing species."]
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  • Elix, JA/ Evans, JE/ Nash, TH", III 1988: New depsides from Dimelaena lichens. - Australian Journal of Chemistry 41: 1789-1796. [RLL List # 136 / Rec.# 4887]
    Keywords: CHEMISTRY/ DEPSIDES/ DIMELAENA/ ERIODERMA
    Abstract: Several formulae. ["The new depsides 3-chlorostenosporic acid, 3-chloroperlatolic acid and subsphaeric acid have been detected in Dimelaena lichens and the structures of the metabolites have been established by unambiguous synthesis. Wrightiin (methyl 3-chloroevernate), a depside from Erioderma wrightii, has also been synthesized by using similar methodology."]
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  • Nash, TH", III/ Egan, RS 1988: The biology of lichens and bryophytes. - In: T. H. Nash, III & V. Wirth (eds.): Lichens, Bryophytes and Air Quality. Bibliotheca Lichenologica No. 30. J. Cramer, Berlin-Stuttgart, pp. 11-22. [RLL List # 135 / Rec.# 13349]
    Keywords: GENERAL
    Abstract: [General introduction to the biology of the lichen-forming fungi and bryophytes.]
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  • Nash, TH", III/ Lange, OL 1988: Responses of lichens to salinity: concentration and time-course relationships and variability among Californian species. - New Phytologist 109: 361-367. [RLL List # 135 / Rec.# 13359]
    Keywords: CALIFORNIA/ PHYSIOLOGY/ SALINITY/ DENDROGRAPHA/ PSEUDOCYPHELLARIA/ EVERNIA/ RAMALINA/ PHOTOSYNTHESIS/ RESPIRATION
    Abstract: 3 figures. 2 tables. ["Sensitivity to salinity varied widely among 12 Californian lichen species occurring along a coastal to inland gradient, with the degree of sensitivity being approximately proportional to the distance from the coast where the species grew." Authors also conclude, "The results of the experiments with different solutions at equal osmotic potentials indicate that the sensitive species are responding to both osmotic and salt ion effects. These species may provide a good system for investigating mechanisms involved in purely osmotic versus ionic effects."]
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  • Nash, TH", III 1988: Correlating fumigation studies with field effects. - In: T. H. Nash, III & V. Wirth (eds.): Lichens, Bryophytes and Air Quality. Bibliotheca Lichenologica No. 30. J. Cramer, Berlin-Stuttgart, pp. 201-216. [RLL List # 135 / Rec.# 13391]
    Keywords: FUMIGATIONS/ SO2/ AIR POLLUTION/ ZINC/ HYDROGEN FLUORIDE
    Abstract: 4 tables. 2 figures. ["By non-parametric correlation analysis significant agreement among the various scales is shown and this strongly supports the inference that lichens actually do respond to sulfur dioxide. For other air pollutants, data are currently insufficient to establish precise sensitivity scales. However, it is demonstrated that pollutant concentrations measured in the field are sufficiently high to adversely affect species that are demonstrably sensitive to fumigation experiments with air pollutants such as ozone, hydrogen fluoride and zinc."]
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  • Nash, TH", III 1988: [Review of:] J. Middelborg and J. Mattson: Crustaceous lichenized species of the Caliciales in Norway. Sommerfeltia 5: 1-70. 1987. - The Bryologist 91(4): 381. [RLL List # 136 / Rec.# 13392]
    Keywords: REVIEW
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  • Nash, TH", III/ Wirth, V", (eds.) 1988: Lichens, Bryophytes and Air Quality. - Bibliotheca Lichenologica No. 30. J. Cramer, Berlin-Stuttgart. 297 pp. [RLL List # 135 / Rec.# 13369]
    Keywords: AIR POLLUTION/ GENERAL/ REVIEWS
    Abstract: Many illustrations. [Compendium of 12 articles on the uses of lichens and bryophytes in the study and monitoring of air quality both in North America and Europe. Individual articles are listed separately in this bibliography.]
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  • Winer, WE/ Atkinson, CJ/ Nash, TH", III 1988: Comparisons of SO2 absorption capacities of mosses, lichens, and vascular plants in diverse habitats. - In: T. H. Nash, III & V. Wirth (eds.): Lichens, Bryophytes and Air Quality. Bibliotheca Lichenologica No. 30. J. Cramer, Berlin-Stuttgart, pp. 217-230. [RLL List # 135 / Rec.# 20329]
    Keywords: ABSORPTION/ SO2/ AIR POLLUTION
    Abstract: 3 figures. 2 tables. ["Analysis indicates that mosses in all habitats are potentially 100 to 1000 times stronger SO2 sinks on a dry weight basis than are vascular plants. Similarly one well studied arctic lichen is estimated to absorb well over 100 times as much SO2 as arctic vascular plants. Adjustments for variability in moss or lichen water contents reduce absorption estimates, but estimates still exceed vascular plant absorption estimates by 100 times."]
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  • Blum, OB/ Nash, TH, III/ Gebauer, R 1989: The effect of nitrate on CO2 exchange in the epiphytic lichens Ramalina menziesii Tayl. and Pseudocyphellaria anthraspis (Ach.) Magn. from central California. - In: Noble, RD/Martin, JL/Jensen, KF (eds.): Air Pollution Effects on Vegetation Including Forest Ecosystems. USDA, Forest Service,, pp. 181-185. [RLL List #  / Rec.# 2041]
    Keywords: AIR POLLUTION/ CO2 EXCHANGE/ NITRATE
    Abstract: 1 fig.
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  • Nash, TH", III 1989: Lichenes Exsiccati Distributed by Arizona State University, Tempe, Arizona, U.S.A. Fasc. 3 (No. 51-75). Fasc. 4 (No. 76-100). - . 12 pp. [RLL List # 140 / Rec.# 13393]
    Keywords: EXSICCAT/ ARIZONA/ MEXICO/ ASU/ HERBARIA
    Abstract: [Labels for nos. 51-100 in this exsiccat. Most of the specimens are from the U.S.A. and Mexico.]
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  • Nash, TH", III 1989: Metal tolerance in lichens. - In: A. Jonathan Shaw (ed.): Heavy Metal Tolerance in Plants: Evolutionary Aspects. CRC Press, Inc., Boca Raton, pp. 119-131. [RLL List # 140 / Rec.# 13394]
    Keywords: METAL POLLUTION/ HEAVY METALS TOLERANCE/ REVIEW
    Abstract: 1 table. [Review with many references. "Perhaps with the rapid development of plant molecular biology and the recent successful demonstration of gene flow in lichens, the degree to which genetically based tolerance exists in lichens will become demonstrated in the future."]
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  • Ryan, BD/ Nash, TH", III 1989: Lecanora sect. Petrasterion (lichenized Ascomycotina) in North America: Lecanora sonorae Ryan & Nash, sp. nov. (subsect. Pseudocorticatae), from Mexico. - Cryptogamic Botany 1: 215-218. [RLL List # 140 / Rec.# 16049]
    Keywords: LECANORA/ MEXICO/ SONORA/ OAXACA/ NEW TAXA
    Abstract: 1 plate. [New: Lecanora sonorae sp. nov. from Sonora and Oaxaca, Mexico.]
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  • Benedict, JB/ Nash, TH", III 1990: Radial growth and habitat selection by morphologically similar chemotypes of Xanthoparmelia. - The Bryologist 93(3): 319-327. [RLL List # 141 / Rec.# 1769]
    Keywords: XANTHOPARMELIA/ COLORADO/ CHEMOTYPES/ GROWTH RATES/ HABITAT SELECTION/ ECOLOGY
    Abstract: 4 tables. 4 figures. [Study conducted in the Colorado Front Range on Xanthoparmelia lineola, X. subdecipiens and three other chemotypes. "Recognition of the chemotypes as distinct species is supported by differences in annual radial growth under uniform conditions at a transplant locality, and differences in habitat selection along an environmental transect."]
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  • Boonpragob, K/ Nash, TH", III 1990: Seasonal variation of elemental status in the lichen Ramalina menziesii Tayl. from two sites in Southern California: evidence for dry deposition accumulation. - Environmental and Experimental Botany 30(4): 415-428. [RLL List # 142 / Rec.# 2138]
    Keywords: SEASONAL VARIATION/ RAMALINA MENZIESII/ CALIFORNIA/ METALS/ TRANSPLANTS/ AIR POLLUTION
    Abstract: 4 figures. 4 tables. [Transplant study in California in relation to air pollution levels. "Total concentration of most elements did not exhibit distinct seasonal patterns but the higher concentrations exceeded background levels by factors of 1.3-3.7, depending on the element. In contrast, the elements in the leachates at the control and the polluted site exhibited distinct seasonal patterns with higher concentrations generally present in summer than in winter. These elemental patterns reflected not only atmospheric deposition patterns, but also intracellular release of elements as injury occurred and to a lesser extent accumulation of marine aerosols and soil particulates."]
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  • Boucher, VL/ Nash, TH", III 1990: Growth patterns in Ramalina menziesii in California: coastal vs. inland populations. - The Bryologist 93(3): 295-302. [RLL List # 141 / Rec.# 2178]
    Keywords: CALIFORNIA/ RAMALINA/ GROWTH PATTERNS/ BRANCHING/ ECOLOGY/ TRANSPLANTS
    Abstract: 1 table. 9 figures. ["We used a nondestructive sampling technique to estimate seasonal and annual linear growth of the inland form transplanted within an inland site and to a coastal site. Growth at the inland site was concentrated in the fall and winter months when precipitation occurred; growth at the coastal site was nearly constant through the first year of the study. Some genetic differences appeared to exist between morphological types, but their responses to the environment were plastic."]
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  • Boucher, VL/ Nash, TH", III 1990: The role of the fruticose lichen Ramalina menziesii in the annual turnover of biomass and macronutrients in a blue oak woodland. - Botanical Gazette 151(1): 114-118. [RLL List # 142 / Rec.# 2179]
    Keywords: BIOMASS/ ECOLOGY/ CALIFORNIA/ RAMALINA/ ANNUAL TURNOVER
    Abstract: 2 tables. 2 figures. [Study conducted in central coastal California. "Ramalina menziesii represented an average of 94% of total epiphytic lichens by weight. Ramalina biomass was estimated to turn over 29% per yr and as a consequence this lichen contributed 13% N, 4% P, 7% K, 1% Ca, 3% Mg, and 8% Na of the annual canopy nutrient turnover. Although the study area is much drier than those of other similar studies, R. menziesii contributed as much to biomass and nutrient turnover as other epiphytic lichens from wetter locations."]
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  • Nash, TH", III/ Boucher, VL/ Gebauer, R/ Larson, DW 1990: Morphological and physiological plasticity in Ramalina menziesii: studies with reciprocal transplants between a coastal and inland site. - In: H. M. Jahns (ed.): Contributions to Lichenology in Honour of A. Henssen. Bibliotheca Lichenologica. No. 38. J. Cramer, Berlin-Stuttgart, pp. 357-365. [RLL List # 141 / Rec.# 13348]
    Keywords: RAMALINA/ CALIFORNIA/ TRANSPLANTS
    Abstract: 1 figure. [Transplant studies were conducted in California. "Thus both environmental and genetic controls may be affecting the morphology and physiology of this species."]
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  • Nash, TH", III/ Hafellner, J/ Common, RS 1990: Omphalora, a new genus in the Parmeliaceae. - Lichenologist 22(4): 355-365. [RLL List # 141 / Rec.# 13354]
    Keywords: OMPHALORA/ NEW TAXA/ OMPHALODIUM/ PARMELIACEAE/ NEW MEICO/ ARIZONA/ COLORADO
    Abstract: 1 table. 2 figures. [New: Omphalora Nash & Hafellner gen. nov. and O. arizonicum (Tuck. ex Willey) Nash & Hafellner comb. nov. "Differences in anatomy, morphology, pseudocyphellae type, pigmentation and cell wall chemistry, and ascal dehiscence provide the primary justification for the new genus."]
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  • Nash, TH", III/ Reiner, A/ Demmig-Adams, B/ Kilian, E/ Kaiser, WM/ Lange, OL 1990: The effect of atmospheric desiccation and osmotic water stress on photosynthesis and dark respiration of lichens. - New Phytologist 116: 269-276. [RLL List # 142 / Rec.# 13364]
    Keywords: WATER RELATIONS/ PHOTOSYNTHESIS/ RESPIRATION/ PHYSIOLOGY/ SALINITY/ CALIFORNIA/ RAMALINA/ PSEUDOCYPHELLARIA/ EVERNIA
    Abstract: 1 table. 2 figures. [Study of photosynthetic and respiratory rates was conducted on Ramalina menziesii, Dendrographa minor, Evernia prunastri, and Pseudocyphellaria anthraspis from California by changing water potential through desiccation or osmotic stress using sea salt or sorbitol solutions. "These species provide a model system to differentiate the effect of atmospheric desiccation and osmotic stress on lichen metabolism, and to study the interaction of drought per se with other stress factors such as salt and high light."]
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  • Boonpragob, K/ Nash, TH 1991: Physiological responses of the lichen Ramalina menziesii Tayl. to the Los Angeles urban environment. - Environmental and Experimental Botany 31(2): 229-238. [RLL List #  / Rec.# 2139]
    Keywords: AIR POLLUTION/ FLUORIDES/ NITRATE/ SULFUR DIOXIDE
    Abstract: 3 fig. 1 tab. [Transplant experiments show a decline in chlorophyll content and net photosynthesis associated with the accumulation of 23 ions, particularly nitrate and fluoride.]
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  • Knops, JMH/ Nash, TH, III/ Boucher, VL/ Schlesinger, WH 1991: Mineral cycling and epiphytic lichens: implications at the ecoystem level. - Lichenologist 23(3): 309-321. [RLL List #  / Rec.# 10255]
    Keywords: EPIPHYTIC/ LITTER FALL/ MINERAL CYCLING
    Abstract: 2 fig. 4 tab. [Epiphytic lichens are believed to be important in capturing nutrients from wet deposition, occult precipitation, sedimentation, impaction and gaseous uptake. "Most nutrients captured by these processes represent new nutrient inputs that would otherwise not be intercepted by the ecosystem."]
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  • Nash, TH, III/ Gries, C 1991: Lichens as indicators of air pollution. - In: Hutzinger, O (ed.): The Handbook of Environmental Chemistry. 4, Part C. Springer-Verlag, Heidelberg, New York, pp. 1-29. [RLL List #  / Rec.# 13400]
    Keywords: AIR POLLUTION/ BIOINDICATORS
    Abstract: Lichens are well known as sensitive indicators of air pollution, particularly for sulfur dioxide. In part, this is related to their unique biology. Evidence supporting this assertion goes back well over 100 years and is based on extensive field and laboratory studies. In general, these studies reinforce each other, but for oxidants the data are not entirely consistent, and consequently require further work. At the least, lichens appear to be less sensitive to oxidants than vascular plants. Acid precipitation effects are closely related to SO2 effects. The mechanistic basis for SO2 effects is briefly reviewed. The extreme sensitivity of lichens to SO2 is partially related to their ability to absorb more SO2 for a given concentration than typical vascular plants. The use of lichens as long-term integrators of elemental deposition patterns is well established, but their use for monitoring dry deposition has only recently been recognized. Air pollutants adversely impact not only growth, reproductive potential, and morphology, but also a wide variety of physiological processes, which also becomes reflected in ultrastructural changes. The impact of organic pollutants on lichens is largely undocumented and is a prime area for future work, even though much work remains to be accomplished with the traditionally recognized air pollutants
    [Edit/Delete] [Upload PDF/URL] [ET: 1042]

  • Nash, TH 1991: Preliminary study of the lichens of Mesa Verde National Park. - Journal of the Arizona-Nevada Academy of Science 23(2): 97-105. [RLL List #  / Rec.# 13415]
    Keywords: AIR POLLUTION/ COLORADO/ MESA VERDE NATIONAL PARK
    Abstract: 1 fig. [Reports 150 species.]
    [Edit/Delete] [Upload PDF/URL] [ET: 1037]

  • Ryan, BD/ Nash, TH, III 1991: Lecanora Sect. Petrasterion (lichenized Ascomycotina) in North America: Notes on the L. novomexicana complex (Subsect. Pseudocorticatae). - Mycotaxon 41(1): 57-65. [RLL List #  / Rec.# 16051]
    Keywords: LECANORA/ NORTH AMERICA
    Abstract: 4 figures [Two species are recognized in North America.]
    [Edit/Delete] [Upload PDF/URL] [ET: 1222]

  • Ryan, BD/ Nash, TH, III 1991: Lichen Flora of the eastern Brook Lakes Watershed, Sierra Nevada Mountains, California. - The Bryologist 94(2): 181-195. [RLL List #  / Rec.# 16052]
    Keywords: CALIFORNIA/ FLORISTICS
    Abstract: 6 fig. 5 tab. [Over one hundred species are reported, thirty of which are new for California. Includes data on frequency and relative cover.]
    [Edit/Delete] [Upload PDF/URL] [ET: 1223]

  • Triebel, D/ Rambold, G/ Nash, TH, III 1991: On lichenicolous fungi from continental North America. - Mycotaxon 42: 263-296. [RLL List #  / Rec.# 18992]
    Keywords: LICHEN PARASITES/ LICHENICOLOUS
    Abstract: [Presents an annotated list of fifty-eight lichenicolous taxa from North America. New: Lichenochora xanthoriae Triebel & Rambold sp. nov., Sphaerellothecium subtile Triebel & Rambold sp. nov., Arthonia subfuscicola (Lindsay) Triebel comb. nov., Stigmidium congestum (Koerb.) Triebel comb. nov. New to North America: Abrothallus peyritschii, A. prodiens, Adelococcus alpestris, Arthonia clemens, A. epiphyscia, A. glaucomaria, A. subfuscicola, Cercidospora epicarphinea, Dactylospora deminuta, Epilichen stellatus, Karschia inops, Lichenoconium pyxidatae, L. xanthoriae, Lichenodiplis lecanorae, Peridothelia grandiuscula, Polycoccum galligenum, Polysporina lapponica, Pyrenidium actinellum, Rinodina insularis, Skyttea elachistosphora, Sphaerellothecium abditum, Stigmidium congestum, S. fuscatae, S. tabacinae, Vouauxiomyces truncatus.]
    [Edit/Delete] [Upload PDF/URL] [ET: 1443]

  • Elix, JA/ Nash, TH, III 1992: A synopsis of the lichen genus Psiloparmelia (Ascomycotina, Parmeliaceae). - The Bryologist 95(4): 377-391. [RLL List # 150 / Rec.# 4971]
    Keywords: PSILOPARMELIA/ SOUTH AFRICA/ SOUTH AMERICA
    Abstract: 13 fig. 1 tab. ["The genus Psiloparmelia Hale has its center of diversity in the high Andes Mountains of South America, but also occurs in the mountains of southern Africa." A total of twelve species is recognized; descriptions and a key are provided. New: P. denotata* sp. nov., P. dichotoma* sp. nov., P. diffractaica* sp. nov., P. flavobrunnea (Müll. Arg.) comb. nov., P. hypostictica* sp. nov., P. norstictica* sp. nov., P. pustulata* sp. nov., P. salazinica* sp. nov., P. sorediosa* sp. nov., P. subcrustosa* sp. nov.]
    [Edit/Delete] [Upload PDF/URL] [ET: 2305]

  • Nash, TH, III 1992: Lichenes Exsiccati, Distributed by Arizona State University, Fasc. 5 (No. 101-125), Fasc. 6 (No. 126-150). - Tempe, Arizona. 15 pp. [RLL List # 179 / Rec.# 13411]
    Keywords: ARIZONA/ EXSICCAT
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  • Sanz, MJ/ Gries, C/ Nash, TH, III 1992: Dose-response relationships for SO2 fumigations in the lichens Evernia prunastri (L.) Ach. and Ramalina fraxinea (L.) Ach. - New Phytologist 122(2): 313-319. [RLL List # 150 / Rec.# 16291]
    Keywords: AIR POLLUTION/ CHLOROPHYLL/ CHLOROPHYLL CONTENT/ DOSE-RESPONSE/ PHOTOSYNTHESIS/ RESPIRATION/ SO2
    Abstract: 3 fig. 3 tab.
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  • Weber, WA/ Nash, TH, III 1992: Biatorella clauzadeana in North America. - Lichenologist 24(1): 101-103. [RLL List #  / Rec.# 20000]
    Keywords: BIATORELLA/ GYPSUM
    Abstract: [Biatorella clauzadeana, an obligate gypsophilous species described from Spain, is reported from Mexico and New Mexico.]
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  • Büdel, B/ Nash, TH, III 1993: A new species of Peltula from the Sonoran Desert, Mexico. - Lichenologist 25(3): 279-284. [RLL List # 153 / Rec.# 1337]
    Keywords: MEXICO/ PELTULA/ SONORAN DESERT
    Abstract: 8 fig. 1 tab. [New: Peltula sonorensis sp. nov.]
    [Edit/Delete] [Upload PDF/URL] [ET: 2743]

  • Nash, T, III/ Wetmore, C/ Anderson, W/ Bratt, C/ Denison, W/ Eversman, S/ Murray, B/ St. Clair, L 1993: Floristics. - In: Stolte, K/Mangis, D/Doty, R/Tonnessen, K/Huckaby, LS (eds.): Lichens as Bioindicators of Air Quality. General Technical Report, U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, Colorado, pp. 6-15. [RLL List # 154 / Rec.# 13344]
    Keywords: AIR POLLUTION/ BIOINDICATION/ FLORISTICS
    Abstract: 1 appnd. [Discussion of the processes and value of baseline floristic studies in using lichens as bioindicator.]
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  • Poelt, J/ Nash, TH, III 1993: Studies in the Umbilicaria vellea group (Umbilicariaceae) in North America. - The Bryologist 96(3): 422-430. [RLL List # 153 / Rec.# 14752]
    Keywords: NORTH AMERICA/ UMBILICARIA
    Abstract: 9 fig. [New: Umbilicaria americana sp. nov. This new species is segregated from the North American representation of U. vellea. Taxonomic notes on seven other similar species are also provided, along with a key for all nine species.]
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