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Author: Kappen, L

  • Kappen, L/ Lange, OL 1970: Kalteresistenz von Flechten aus verschiedenen Klimagebieten. - Vortrage aus dem Gesamtgebiet der Botanik, N.F. [Deutsch. Bot. Ges.] 4: 61-65. [RLL List # 75 / Rec.# 9774]
    Keywords: ECOPHYSIOLOGY/ COLD RESISTENCE/ TEMPERATURE
    Abstract: 2 fig. 1 tab. [English summary.]
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  • Kappen, L/ Lange, OL 1972: Die Kaltresistenz einiger Makrolichenen. - Flora 161: 1-29. [RLL List # 82 / Rec.# 9775]
    Keywords: COLD INJURY/ TEMPERATURE/ ADAPTATIONS
    Abstract: 13 fig. 3 tab. ["Cold injury conclusively may only occur when ice is formed within the cells."--English summary.]
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  • Kappen, L/ Schulze, ED 1972: Ramalina maciformis (Del.) Nyl. fertile in western Negev, Israel. - Lichenologist 5: 323-325. [RLL List # 84 / Rec.# 9787]
    Keywords: RAMALINA/ ISRAEL/ SEXUAL REPRODUCTION/ APOTHECIA/ NEGEV DESERT
    Abstract: 1 pl.
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  • Lange, OL/ Kappen, L 1972: Phytosynthesis of lichens from Antarctica. - Antarctic Res. Ser., Antarctic Terrestrial Biol. 20: 83-95. [RLL List # 84 / Rec.# 11026]
    Keywords: PHOTOSYNTHESIS/ ANTARCTICA/ PHYSIOLOGY/ ADAPTATIONS
    Abstract: 6 fig.
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  • Kappen, L 1973: Response to extreme environments. - In: V. Ahmadjian & M. E. Hale (eds.): The Lichens. Academic Press, New York and London, pp. 311-380. [RLL List # 88 / Rec.# 9793]
    Keywords: EXTREME ENVIRONMENT / ADAPTATION ECOLOGY / REVIEW
    Abstract: [Detailed review; many references.]
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  • Evenari, M/ Schulze, ED/ Kappen, L/ Buschbom, U/ Lange, OL 1975: Adaptive mechanisms in desert plants. - In: F. J. Vernberg (ed.): Physiological Adaptations to the Environment. Intext Educational Publishers, New York, pp. 111-129. [RLL List # 95 / Rec.# 5342]
    Keywords: ADAPTATIONS/ ECOLOGY/ EVOLUTION/ DESERTS/ RAMALINA
    Abstract: [Includes the classic example of Ramalina maciformis.]
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  • Kappen, L/ Lange, OL/ Schulze, ED/ Evenari, M/ Buschbom, U 1975: Primary production of lower plants (lichens) in the desert and its physiological basis. - In: : Photosynthesis and Productivity in Different Environments. International Biological Programme. Vol. 3. Cambridge University Press, pp. 133-143. [RLL List # 94 / Rec.# 9772]
    Keywords: PRIMARY PRODUCTION/ ECOLOGY/ BIOMASS/ DESERT/ PHYSIOLOGY
    Abstract: 13 figures.
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  • Lange, OL/ Schulze, ED/ Kappen, L/ Buschbom, U/ Evenari, M 1975: Adaptations of desert lichens to drought and extreme temperatures. - In: N. F. Hadley (ed.): Environmental Physiology of Desert Organisms. Dowden, Hutchinson & Ross, Stroudsburg, PA, pp. 20-37. [RLL List # 94 / Rec.# 11045]
    Keywords: ADAPTATIONS/ DESERT/ TEMPERATURES/ WATER REALTIONS/ ECOLOGY
    Abstract: 11 figures.
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  • Kappen, L/ Lange, OL/ Schulze, ED/ Evenari, M/ Buschbom, U 1979: Ecolphysiological investigations on lichens of the Negev Desert. VI. Annual course of photosynthetic production of Ramalina maciformis (Del.) Bory. - Flora 168: 85-108. [RLL List # 103-49 / Rec.# 9773]
    Keywords: ECOPHYSIOLOGY/ WATER RELATIONS/ NEGEV/ DESERT/ ISRAEL/ DEW
    Abstract: 11 figures. 4 tables. [In addition to considerable data presented on gas exchange in relation to light, temperature and water content, the authors conclude that, "The existence of many lichens in the Negev is only possible because of the high frequency and regularity of dew-falls."]
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  • Friedmann, EI/ Garty, J/ Kappen, L 1980: Fertile stages of cryptoendolithic lichens in the dry valleys of southern Victoria Land. - Antarctic Journal of the United States 15: 166-167. [RLL List # 112-21 / Rec.# 6044]
    Keywords: ANTARCTIC/ CRYPTOENDOLITHIC/ BUELLIA/ SAXICOLOUS
    Abstract: 2 figures. [Specimens are tentatively placed in the genus Buellia.]
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  • Kappen, L/ Lange, OL/ Schulze, ED/ Buschbom, U/ Evenari, M 1980: Ecophysiological investigations on lichens of the Negev. VII. The influence of the habitat exposure on dew imbibition and photosynthetic productivity. - Flora 169: 216-229. [RLL List # 109-56 / Rec.# 9771]
    Keywords: ECOPHYSIOLOGY/ ISRAEL/ DESERT/ PHOTOSYNTHESIS/ WATER RELATIONS/ NEGEV
    Abstract: 3 tables. 6 figures. [The high lichen density and species richness are highest on northern exposures due, at least in part, to higher rates of dew imbibition and greater net photosynthetic production.]
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  • Kappen, L/ Smith, DC 1980: Heat tolerance of two Cladonia species and Campylopus praemorsus in a hot steam vent area of Hawaii. - Oecologia 47: 184-189. [RLL List # 109-57 / Rec.# 9788]
    Keywords: CLADONIA/ HAWAII/ STEAM VENTS/ TEMPERATURE/ HEAT TOLERANCE/ CLADINA
    Abstract: 3 tables. 4 figures. ["With respect to heat tolerance only Campylopus can be considered as adapted to the hot environment. Therefore it is able to colonize the hot dry soil while deriving its moisture from adjacent steam vents. The lichens, particularly Cl. skottsbergii, are not adapted and are as sensitive to heat as most other lichens."]
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  • Hopp, U/ Kappen, L 1981: Einige Aspekte zur immissionsbedingten Verbreitung von Flechten im Stadtgebiet von Wurzburg. - Berichte der Bayerischen Botanischen Gesellschaft 52: 15-24. [RLL List # 119-59 / Rec.# 8729]
    Keywords: EPIPHYTES/ AIR POLLUTION/ EPILITHIC/ GERMANY/ WURZBURG
    Abstract: 3 tables. 4 figures. [Epiphytic species show better correlations with air pollution levels in the area than do correlations with the epilithic species. Other distributional and pollution data are presented for the 90 species in the area.]
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  • Kappen, L/ Friedmann, EI/ Garty, J 1981: Ecophysiology of lichens in the dry valleys of southern Victoria Land, Antarctica. I. Microclimate of the cryptoendolithic lichen habitat. - Flora 171: 216-235. [RLL List # 112-36 / Rec.# 9767]
    Keywords: ANTARCTIC/ CRYPTOENDOLITHIC/ ECOLOGY/ MICROCLIMATE/ PHOTOSYNTHESIS
    Abstract: 2 tables. 9 figures. ["It was estimated tentatively that, on an overcast day, cryptoendolithic lichens may have been photosynthetically active for about 15 h, although these conditions were suboptimal. On a clear and windy day, photosynthesis may have been possible for 11 h, with 4 h optimal activity. On a clear, warm and clam day, the estimates amounted to 13.5 and 6.5 h, respectively."]
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  • Kappen, L 1982: Lichen oases in hot and cold deserts. - Journal of the Hattori Botanical Laboratory 53: 325-330. [RLL List # 119-73 / Rec.# 9794]
    Keywords: DESERT/ ADAPTATION/ ECOLOGY/ REVIEW/ NICHE
    Abstract: 1 table. 2 figures. [General review concluding that "... adaptation of lichens to arid environments means in all cases the occupation of a certain ecological niche which is a kind of oasis."]
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  • Kappen, L/ Rogers, RW 1982: XIII International Botanical Congress Symposium: Lichens of Arid Regions. - Journal of the Hattori Botanical Laboratory 53: 305-307. [RLL List # 119-76 / Rec.# 9780]
    Keywords: SYMPOSIUM/ DESERTS/ BOTANICAL CONGRESS
    Abstract: [Introductory remarks.]
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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."]
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  • Kappen, L/ Friedmann, EI 1983: Ecophysiology of lichens in the dry valleys of Southern Victoria Land, Antarctica. II. CO2 gas exchange in cryptoendolithic lichens. - Polar Biology 1: 227-232. [RLL List # 119-75 / Rec.# 9768]
    Keywords: ANTARCTIC/ CRYPTOENDOLITHIC/ SOUTHERN VICTORIA LAND/ CO2 EXCHANGE/ PHOTOSYNTHESIS/ TEMPERATURE/ ECOLOGY/ ADAPTATION
    Abstract: 2 tables. 6 figures. ["The results indicate that these cryptoendolithic lichens are not more adapted to low temperatures than are crustose lichens from coastal Antarctica. Calculations show that optimum temperatures for photosynthesis may not be reached in the natural environment."]
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  • Kappen, L/ Friedmann, I 1983: Kryptoendolithische Flechten als Beispiel einer Anpassung an extrem troken-kalte Klimabedingungen. - Verhandlungen der Gesellschaft fur Okologie 10: 517-519. [RLL List # 120-82 / Rec.# 9769]
    Keywords: OWN/ CRYPTOENDOLITHIC/ ANTARCTICA/ PHOTOSYNTHESIS
    Abstract: 1 figure. [Brief review of photosynthetic capabilities of the cryptoendolithic lichens of Antarctica.]
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  • Kappen, L 1983: Anpassungen von Pflanzen an kalte Extremstandorte. - Berichte der Deutschen Botanischen Gesellschaft 96: 87-101. [RLL List # 120-81 / Rec.# 9795]
    Keywords: ADAPTATIONS/ OWN/ EXTREME ENVIRONMENTS/ ANTARCTICA/ COLD/ CRYPTOENDOLITHIC
    Abstract: 2 tables. 6 figures. [Adaptation of plants to cold environments is discussed with particular emphasis on the cryptogams of Antarctica, especially the cryptoendolithic lichens.]
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  • Kappen, L 1983: Ecology and physiology of the Antarctic fruticose lichen Usnea sulphurea (Koenig) Th. Fries. - Polar Biology 1: 249-255. [RLL List # 119-74 / Rec.# 9796]
    Keywords: ANTARCTIC/ USNEA/ ECOLOGY/ PHYSIOLOGY/ CHLOROPHYLL/ TEMPERATURE/ PHOTOSYNTHESIS/ ADAPTATION
    Abstract: 9 figures. 1 table. [Both light and shade forms of this species "... differ by chlorophyll content and temperature dependency of net photosynthesis, which demonstrates an adaptive response of these forms to their environment."]
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  • Kappen, L 1984: Ecological aspects of exploitation of the non-living resources of the Antarctic Continent. - In: Wolfrum & K. Bockslaff (eds.): Antarctic Challenge: Conflicting Interests, Cooperation, Environmental Protection, Economic Development. Proceedings of an Interdisciplinary Symposium June 22nd-24th, 1983. Veroffentlichungen des Instituts fur Internationales Recht an der Universitat Kiel. No. 88. Duncker & Humblot, Berlin, pp. 211-217. [RLL List # 123-65 / Rec.# 9797]
    Keywords: ANTARCTICA/ OWN/ EXPLOITATION/ IMPACT/ RESOURCES
    Abstract: [Author states that much still needs to be learned about the Antarctic environment before exploration and exploitation of mineral resources should be considered. Lichens are mentioned.]
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  • Kappen, L/ Redon, J 1984: Microclimate influencing the lichen vegetation on different aspects of a coastal rock in the maritime Antarctic. - Instituto Antarctico Chileno Ser. Cient. 31: 53-65. [RLL List # 126-58 / Rec.# 9778]
    Keywords: ANTARCTIC/ SOUTH SHETLAND ISLANDS/ MICROCLIMATE/ RAMALINA/ USNEA/ GROWTH/ ECOLOGY/ WATER RELATIONS/ OWN
    Abstract: 1 table. 5 figures. [Lichen distribution on coastal rocks on King George Island, South Shetland Islands, was correlated with variations in thallus hydration in Ramalina terebrata and Usnea fasciata. Exposures favorable to fog had much richer lichen abundance and diversity although the temperatures were cooler in these northwest and west rock slopes.]
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  • Kappen, L 1985: Lichen-habitats as micro-oases in the Antarctic--the role of temperature. - Polarforschung 55: 49-54. [RLL List # 129-89 / Rec.# 9798]
    Keywords: ANTARCTIC/ TEMPERATURE/ ECOLOGY/ CLIMATE/ GROWTH/ PHYSIOLOGY
    Abstract: 6 figures. ["From a comparison of diurnal courses of the microclimate of lichen habitats in the maritime Antarctic with those of the desertic continental Antarctic, it is apparent that temperature conditions are in the same range (6 - 8 C) in all habitats during days when lichens are soaked and active."]
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  • Kappen, L 1985: Vegetation and ecology of ice-free areas of northern Victoria Land, Antarctica. 1. The lichen vegetation of Birthday Ridge and an inland mountain. - Polar Biology 4: 213-225. [RLL List # 126-56 / Rec.# 9799]
    Keywords: ANTARCTIC/ VICTORIA LAND/ ECOLOGY/ BIOMASS/ PHYTOSOCIOLOGY/ OWN
    Abstract: 3 figures. 5 tables. [Reports 42 lichen species and 5 bryophytes from this ice-free area in Antarctica, including ecological observations and community analyses. "Pattern and density of vegetation characterized the area as probably more desertic than others investigated in eastern Antarctica, although locally a biomass of up to 1 kg m-2 was found."]
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  • Kappen, L 1985: Vegetation and ecology of ice-free areas of northern Victoria Land, Antarctica. 2. Ecological conditions in typical microhabitats of lichens at Birthday Ridge. - Polar Biology 4: 227-236. [RLL List # 126-57 / Rec.# 9800]
    Keywords: ANTARCTIC/ VICTORIA LAND/ ECOLOGY/ MICROCLIMATE/ UMBILICARIA/ USNEA/ OWN
    Abstract: 9 figures. 10 tables. [Reports on the sheltering effect on growth of lichens and microclimatic measurements. "The presence of lichens was dependent on the moisture conditions of the habitat. It was observed that snow ... accumulated in summer only in deeper levels between rocks, and that the snow rapidly melted on contact with the lichens. The lichens in soaked state had always less than optimum temperatures for net photosynthesis. The rock gaps at Birthday Ridge form oases, the only localities where moisture is provided, and temperature is high enough to enable growth of lichens and mosses."]
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  • Kappen, L 1985: Water relations and net photosynthesis of Usnea. A comparison between Usnea fasciata (maritime Antarctic) and Usnea sulphurea (continental Antarctic). - In: D. H. Brown (ed.): Lichen Physiology and Cell Biology. Plenum Press, New York and London, pp. 41-56. [RLL List # 127-96 / Rec.# 9801]
    Keywords: ANTARCTIC/ USNEA/ PHYSIOLOGY/ WATER REALTIONS/ ADAPTATION/ ECOLOGY/ PHOTOSYNTHESIS
    Abstract: 2 tables. 10 figures. [Distinct differences were found when comparing the two species in these distinct environments with respect to several ecophysiological parameters; however, "there is no difference between the species with respect to the moisture dependency of net photosynthesis. Thus, U. sulphurea, in the dry continental Antarctic, needs particular localities where sufficient moisture is available."]
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  • Kappen, L/ Bolter, M/ Kuhn, A 1986: Field measurements of net photosynthesis of lichens in the Antarctic. - Polar Biology 5: 255-258. [RLL List # 129-90 / Rec.# 9764]
    Keywords: ANTARCTIC/ RAMALINA/ PHOTOSYNTHESIS/ PHYSIOLOGY
    Abstract: 3 figures. [Study on Ramalina terebrata in the maritime Antarctic for a one month period.]
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  • Kappen, L/ Bolter, M/ Kuhn, A 1987: Photosynthetic activity of lichens in natural habitats in the maritime Antarctic. - In: E. Peveling (ed.): Progress and Problems in Lichenology in the Eighties. Bibliotheca Lichenologica No. 25. J. Cramer, Berlin-Stuttgart, pp. 297-312. [RLL List # 131 / Rec.# 9765]
    Keywords: ANTARCTIC/ SOUTH SHETLAND ISLANDS/ ECOPHYSIOLOGY/ PHOTOSYNTHESIS/ USNEA/ HIMANTORMIA
    Abstract: 11 figures. [Study on King George Island, South Shetland Islands, on Usnea antarctica and other Antarctic species. "Our preliminary field data demonstrate that Antarctic lichen species from the same area have a very differing photosynthetic productivity." Opitma are low temperatures and moderate light, while very high water content reduces photosynthetic capacity.]
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  • Kappen, L/ Redon, J 1987: Photosynthesis and water relations of three maritime Antarctic lichen species. - Flora 179: 215-229. [RLL List # 132 / Rec.# 9779]
    Keywords: RAMALINA/ USNEA/ WATER RELATIONS/ PHOTOSYNTHESIS/ HIMANTORMIA/ ANTARCTIC/ COMPETITION
    Abstract: 2 tables. 14 figures. [Study on Ramalina terebrata, Usnea fasciata and Himantormia lugubris. Authors postulate that the prostrate growth form of U. fasciata is degraded as a result of bryophyte competition. "All lichens were capable of absorbing water from a saturated atmosphere."]
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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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  • Jacobsen, P/ Kappen, L 1988: Lichens from the Admiralty Bay region, King George Island (South Shetland Islands, Antarctica). - Nova Hedwigia 46(3-4): 503-510. [RLL List # 137 / Rec.# 9200]
    Keywords: ANTARCTICA/ SOUTH SHETLAND ISLANDS/ CALOPLACA/ MAGASPORA/ LECIDELLA/ VERRUCARIA
    Abstract: 1 figure. [Fifty species are reported. Notable finds include Caloplaca tiroliensis, C. tetraspora, Megaspora verrucosa, Lecidella wulfenii, and Verrucaria cylindrophora.]
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  • Kappen, L/ Hirsch, P 1988: Biology of Antarctic microorganisms and plants. - Polarforschung 58(2/3): 61-64. [RLL List # 140 / Rec.# 9770]
    Keywords: ANTARCTIC/ SYMPOSIUM
    Abstract: 1 figure. [Introductory comments to a collection of papers based on a symposium held at the University of Kiel in 1987.]
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  • Kappen, L 1988: Ecophysiological relationships in different climatic regions. - In: M. Galun (ed.): CRC Handbook of Lichenology. Volume II. CRC Press, Inc., Boca Raton, pp. 37-100. [RLL List # 138 / Rec.# 9802]
    Keywords: ECOPHYSIOLOGY/ GEOGRAPHY/ PHOTOSYNTHESIS/ ADAPTATIONS/ REVIEW
    Abstract: 12 tables. 44 figures. [Exhaustive review of ecophysiological topics relating to lichens with special emphasis on non-temperate regions. Article includes a bibliography of 267 references. Major subdivisions of the chapter include: Wet Forest Habitat, Semiarid and Arid Regions, Arctic and Apline Regions, and Antarctic Region.]
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  • Kappen, L 1988: In the climatic oases of the Antarctic ice desert. Plant life under extreme conditions. - German Research, Reports of the Deutsche Forschungsgemeinschaft 1988(3): 25-28. [RLL List # 137 / Rec.# 9803]
    Keywords: ANTARCTICA/ ADAPTATIONS/ GENERAL/ REVIEW/ ECOPHYSIOLOGY
    Abstract: 7 unnumbered photographs (6 in color). [Popular account of lichen adaptations to the Antarctic environment.]
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  • Kappen, L/ Meyer, M/ Bolter, M 1988: Photosynthetic production of the lichen Ramalina terebrata Hook. f. et Tayl., in the maritime Antarctic. - Polarforschung 58(2/3): 181-188. [RLL List # 139 / Rec.# 9776]
    Keywords: ANTARCTIC/ RAMALINA/ PHOTOSYNTHESIS/ CO2 EXCHANGE/ WATER RELATIONS
    Abstract: 6 figures. ["Continuous measurements of light, temperature and thallus water content at the natural habitat during December 1984 were used to calculate the daily courses of CO2 exchange of R. terebrata by means of the models. As a result, the mean carbon production in this Antarctic summer month was found to be remarkably high. A relatively high growth rate seems to be indicated also by 14C-age analyses in fruticose lichens of the maritime Antarctic botanical zone."]
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  • Kappen, L/ Straka, H 1988: Pollen and spores transport into the Antarctic. - Polar Biology 8: 173-180. [RLL List # 137 / Rec.# 9791]
    Keywords: ANTARCTICA/ DISPERSAL/ LECIDEA/ BUELLIA
    Abstract: 2 tables. 3 figures. ["It seems that the presence of cryptogamic species in the maritime Antarctic zone is predominantly the result of long-distance transport from neighbouring South America and a selection of climatic factors." Authors also conclude, " ... the cryptogams of most of the Antarctic continent may represent a largely relictual flora which survived in ice-free refugia."]
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  • Bolter, M/ Kappen, L/ Meyer, M 1989: The influence of microclimatic conditions on potential photosynthesis of Usnea sphacelata: a model. - Ecological Research 4: 297-307. [RLL List # 143 / Rec.# 2124]
    Keywords: USNEA/ ANTARCTICA/ MICROCLIMATE/ MODELS/ ECOPHYSIOLOGY
    Abstract: 4 tables. 5 figures. [Study conducted in Wilkes Land, Antarctica. "Sharp boundaries of vegetation along the top of the rock indicate that other factors than only light, temperature and humidity as monitored for this study are most important for lichen growth. Hence, other factors such as wind stress and ice blast, erosion and chilling effects, should be considered as to be of much higher power in determining areas of possible plant growth."]
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  • Jacobsen, P/ Kappen, L 1989: Notes on Rinodina olivaceobrunnea in the Antarctic. - Lichenologist 21(2): 173-177. [RLL List # 138 / Rec.# 9201]
    Keywords: ANTARCTIC/ RINODINA
    Abstract: 1 table. 1 figure. [Discussion of spore size and other features of Rinodina turfacea, R. olivaceobrunnea and R. 'archaeoides'.]
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  • Kappen, L 1989: Field measurements of carbon dioxide exchange of the Antarctic lichen Usnea sphacelata in the frozen state. - Antarctic Science 1(1): 31-34. [RLL List # 139 / Rec.# 9805]
    Keywords: ANTARCTICA/ USNEA/ CO2 EXCHANGE/ PHOTOSYNTHESIS/ ECOPHYSIOLOGY/ WATER RELATIONS
    Abstract: 1 figure. ["Carbon dioxide uptake was detected down to -10 C. The carbon production during such a 'frost' day was considerable for a slow-growth Antarctic lichen. The mechanism of water uptake when the thalli are frozen needs further investigation."]
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  • Kappen, L 1989: Ökophysiologische Untersuchungen des Pflanzenlebens in der Antarktis. - In: Guttenberger, H/Bermadinger, E/Grill, D (eds.): Reaktionen von Pflanzen auf Stress. Kark-Franzens-Universität Graz, Graz, pp. 45-53. [RLL List # 154 / Rec.# 9804]
    Keywords: ANTARCTIC/ ECOPHYSIOLOGY/ PHOTOSYNTHESIS/ STRESS/ TEMPERATURE/ WATER RELATIONS
    Abstract: 4 fig. 1 tab.
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  • Kappen, L/ Smith, RIL/ Meyer, M 1989: Carbon dioxide exchange of two ecodemes of Schistidium antarctici in continental Antarctica. - Polar Biology 9: 415-422. [RLL List # 139 / Rec.# 9789]
    Keywords: ANTARCTICA/ CO2 EXCHANGE/ SCHISTIDIUM/ PHOTOSYNTHESIS
    Abstract: 9 figures. [Although primarily an article concerning this moss species, the authors mention some associated lichen species.]
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  • Sancho, LG/ Kappen, L 1989: Photosynthesis and water relations and the role of anatomy in Umbilicaricaeae (Lichenes) from central Spain. - Oecologia 81(4): 473-480. [RLL List # 142 / Rec.# 16199]
    Keywords: PHOTOSYNTHESIS/ WATER RELATIONS/ SPAIN/ UMBILICARIACEAE/ ADAPTATION
    Abstract: 2 tables. 7 figures. ["Water saturation and water loss rate were dependent on morphology and particularly anatomy of the thallus. The physiological and structural data are useful in the interpretation of the ecology and altitudinal distribution of the Umbilicariaceae. No adaptation could be linked to particularities of the Mediterranean climate."]
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  • Kappen, L 1990: Usnea sphacelata, its role in the vegetation and its possible growth capacity on Baily Peninsula, Wilkes Land. - In: H. M. Jahns (ed.): Contributions to Lichenology in Honour of A. Henssen. , pp. 277-289. [RLL List # 141 / Rec.# 9806]
    Keywords: ANTARCTICA/ USNEA/ NEUROPOGON/ HUMAN IMPACT/ GROWTH/ ECOPHYSIOLOGY
    Abstract: 3 tables. 3 figures. [Author estimates that regrowth of Usnea sphacelata to normal size in impacted areas around Antarctic stations would take approximately 300 years based on estimated growth rates from photosynthetic productivity data.]
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  • Kappen, L/ Meyer, M/ Bolter, M 1990: Ecological and physiological investigations in continental Antarctic cryptogams. I. Vegetation pattern and its relation to snow cover on a hill near Casey Station, Wilkes Land. - Flora 184: 209-220. [RLL List # 143 / Rec.# 9777]
    Keywords: ANTARCTICA/ ECOLOGY/ SNOW COVER/ WILKES LAND/ PHYTOSOCIOLOGY
    Abstract: 2 tables. 7 figures. [Phytosociological study based on 105 releves. "The vegetation is highly dependent on the extent and duration of a shallow snow cover, because snow is the main water source for the poikilohydrous cryptogams." Several community types are described and comparisons made with Arctic and alpine communities.]
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  • Kappen, L/ Schroeter, B/ Sancho, LG 1990: Carbon dioxide exchange of Antarctic crustose lichens in situ measured with a CO2/H2O porometer. - Oecologia 82(3): 311-316. [RLL List # 142 / Rec.# 9784]
    Keywords: ANTARCTICA/ PHOTOSYNTHESIS/ POROMETER/ RESPIRATION/ PHYSIOLOGY/ CRUSTOSE
    Abstract: 5 figures. 1 table. ["The data presented here demonstrate the first successful in situ measurements of the CO2 exchange of crustose lichens."]
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  • Kappen, L/ Schroeter, B/ Sancho, LG 1990: Investigaciones ecofisiologicas en liquenes antarticos. Primeros datos sobre la actividad fotosintetica de liquenes crustaceos "in situ". - Actas del Tercer Symposium Español de Estudios Antarticos 1990: 100-104. [RLL List #  / Rec.# 9785]
    Keywords: ANTARCTIC/ PHOTOSYNTHESIS
    Abstract: 3 fig.
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  • Sancho, LG/ Kappen, L/ Schroeter, B 1990: Primeros datos sobre la flora y vegetacion liquenica de Isla Livingston (Islas Shetland del Sur, Antartida). - Actas del Tercer Symposium Español de Estudios Antarticos 1990: 94-99. [RLL List #  / Rec.# 16197]
    Keywords: ANTARCTIC/ SOUTH SHETLAND ISLANDS
    Abstract: 1 fig. [Reports 72 species; new to Antarctica: Umbilicaria nylanderiana.]
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  • Schroeter, B/ Kappen, L/ Sancho, LG 1990: Microclima y fotosintesis neta de Usnea antarctica a partir de mediciones realizadas "in situ" en Isla Livingston (Islas Shetland del Sur, Antartida). - Actas del Tercer Symposium Español de Estudios Antarticos 1990: 105-108. [RLL List #  / Rec.# 16724]
    Keywords: ANTARCTICA/ PHOTOSYNTHESIS/ SOUTH SHETLAND ISLANDS
    Abstract: 3 fig.
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  • Kappen, L/ Breuer, M 1991: Ecological and physiological investigations in continental Antarctic cryptogams. II. Moisture relations and photosynthesis of lichens near Casey Station, Wilkes Land. - Antarctic Science 3(3): 273-278. [RLL List #  / Rec.# 9766]
    Keywords: ANTARCTICA/ PHOTOSYNTHESIS/ SNOW/ WATER RELATIONS
    Abstract: 6 fig. ["In the second of three field studies on the ecology and physiology of lichens on Clark Peninsula, Wilkes Land, Antarctica, photosynthetic activity due to natural and artificial soaking of lichen thalli was investigated. Gravimetric measurements were used to quantify water uptake by lichens in contact with snow or ice. Quantum flux density under a 15 cm thick layer of snow can reach light saturation for net photosynthesis of Usnea sphacelata at temperatures around 0°C. Measurements with a steady-state CO2 diffusion porometer in the field reveal that, in Usnea antarctica, Umbilicaria decussata, and U. aprina, the optimum water content for net photosynthesis was 75-115 % d. wt. after the thalli were sprayed with water or submerged. The depression of net photosynthesis at super-optimal water content was strong in these species. In naturally soaked Usnea sphacelata this depression was less apparent. The water content resulting from contact with snow is frequently near the optimum for photosyntheis. In lichens of continental Antarctica it seems that super-optimal water contents are the exception rather than the rule."]
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  • Kappen, L 1992: O. L. Lange wird 65. - Flora 187: 4-8. [RLL List # 154 / Rec.# 9807]
    Keywords: BIOGRAPHY/ LANGE
    Abstract: [A brief biography, honoring Professor Lange in his 65th year.]
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  • Sancho, LG/ Kappen, L/ Schroeter, B 1992: The lichen genus Umbilicaria on Livingston Island, south Shetland Islands, Antarctica. - Antarctic Science 4(2): 189-196. [RLL List # 149 / Rec.# 16198]
    Keywords: ANTARCTICA/ BIOGEOGRAPHY/ THALLOCONIDIA/ UMBILICARIA
    Abstract: 4 fig. [Five species are reported from the area. New to Antarctica: Umbilicaria africana, U. krascheninnikovii, U. nylanderiana.]
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  • Schroeter, B/ Green, TGA/ Seppelt, RD/ Kappen, L 1992: Monitoring photosynthetic activity of crustose lichens using a PAM-2000 fluorescence system. - Oecologia 92(4): 457-462. [RLL List # 152 / Rec.# 16719]
    Keywords: ANTARCTIC/ CO2 EXCHANGE/ CRUSTOSE/ FLUORESCENCE YIELD/ INSTRUMENT/ PHOTOSYNTHESIS/ WATER CONTENT
    Abstract: 5 fig. 2 tab. ["CO2 exchange and fluorescence yield of the crustose lichen Buellia frigida were measured in situ by means of a CO2 porometer and a PAM-2000, a newly developed portable fluorescence system....It proved possible, using the PAM-2000, to differentiate the physiological performance of the thallus centre and the marginal lobes. The distribution of water in the thallus during a drying cycle was shown to be inhomogeneous. The photosynthetic rates of B. frigida calculated on an area basis are comparatively high and indicate that this lichen is well adapted to its habitat conditions in this part of continental Antarctica."]
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  • Willkomm, H/ Bölter, M/ Kappen, L 1992: Age estimation of Antarctic macrolichens by radiocarbon measurements. - Polarforschung 61(2/3): 103-112. [RLL List # 153 / Rec.# 20307]
    Keywords: AGE/ ANTARCTIC/ RADIOCARBON DATING
    Abstract: 4 fig. 3 tab. ["...the age of mature thalli of Caloplaca regalis, Ramalina terebrata and Usnea antarctica was determined to 32 years, while U. aurantiaco-atra and Himantormia lugubris gave an age of ca. 38 years and ca. 60 years, respectively."]
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  • Friedmann, EI/ Kappen, L/ Meyer, MA/ Nienow, JA 1993: Long-term productivity in the cryptoendolithic microbial community of the Ross Desert, Antarctica. - Microbial Ecology 25(1): 51-69. [RLL List # 152 / Rec.# 6046]
    Keywords: ANTARCTIC/ BIOMASS/ CO2 EXCHANGE/ CRYPTOENDOLITHIC/ ENDOLITHIC/ PHOTOSYNTHESIS/ PRODUCTIVITY
    Abstract: 14 fig. 3 tab. ["Annual gross productivity of the lichen-dominated cryptoendolithic community was calculated from a computer analysis of photosynthetic response based on laboratory measurements of CO2 exchange and three years (1985-1988) of field nanoclimate data."]
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  • Kappen, L 1993: Flechten. Algen als Partner oder Opfer. - Naturwissenschaftliche Rundschau 46(7): 260-267. [RLL List # 153 / Rec.# 9808]
    Keywords: ALGAE/ REVIEW/ SYMBIOSIS
    Abstract: 12 fig. [General review of the lichen symbiosis.]
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  • Kappen, L 1993: Lichens in the Antarctic region. - In: Friedmann, EI (ed.): Antarctic Microbiology. Wiley-Liss, New York, pp. 433-490. [RLL List # 153 / Rec.# 9809]
    Keywords: ADAPTATIONS/ ANTARCTICA/ BIODETERIORATION/ BIOGEOGRAPHY/ BIOMASS/ COLONIZATION/ COLOR/ CRYPTOENDOLITHIC/ DISPERSAL/ GROWTH FORMS/ HABITATS/ HUMAN IMPACT/ LOW TEMPERATURES/ MINERAL NUTRITION/ NITROGEN FIXATION/ PHOTOSYNTHESIS/ POIKILOHYDRIC/ PRODUCTIVITY/ REPRODUCTION/ THALLUS COLOR/ VEGETATION/ WIND
    Abstract: 22 fig. 4 tab. [Includes an introduction, and sections on weathering and nutrient relations, environmental adaptation, physiological adaptation, production and growth, and taxonomic and chorological aspects.]
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  • Kappen, L 1993: Plant activity under snow and ice, with particular reference to lichens. - Arctic 46(4): 297-302. [RLL List # 156 / Rec.# 9810]
    Keywords: COLD TEMPERATURES/ FREEZING/ ICE/ LIFE STRATEGIES/ PHOTOSYNTHESIS/ RESPIRATION/ SNOW/ WATER RELATIONS
    Abstract: 5 fig. 3 tab. [Review article. "Based on recent investigations and literature, this paper discusses to what extent lichens are better adapted to snow and ice than vascular plants. Vascular plants in high latitudes have high freezing tolerances but are photosynthetically inactive in winter (e.g., evergreen coniferous species), while lichens in a highly freezing-tolerant stage can be active and productive under winter conditions. Vascular plants can be active under snow but have no photosynthesis if the tissue is frozen. Recent in situ measurements indicate that lichens are able to photosynthesize at temperatures below -10°C, apparently in the frozen state."]
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  • Wessels, D/ Kappen, L 1993: Photosynthetic performance of rock-colonising lichens in the Mountain Zebra National Park, South Africa. - Koedoe 36(1): 27-48. [RLL List # 156 / Rec.# 20190]
    Keywords: ENDOLITHIC/ KAROOWIA/ MICROCLIMATE/ PHOTOSYNTHESIS/ PRODUCTIVITY/ SANDSTONE/ SOUTH AFRICA
    Abstract: 14 fig. [Both epilithic (Acarospora, Paraparmelia chlorea, Peltula capensis, & Xanthoparmelia marroninipuncta) and endolithic lichens (Lecidea & Sarcogyne) were studied in the field. "Maximum photosynthetic rates of the investigated species were found at temperatures between 20°C and 30°C, far higher than the recorded optimum temperatures for lichens from temperate and and desert regions."]
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  • Kappen, L 1994: The lichen, a mutualistic system - some mainly ecophysiological aspects. - Cryptogamic Botany 4(2): 193-202. [RLL List # 158 / Rec.# 9811]
    Keywords: ENERGY FLUX/ INTERACTIONS/ MYCOBIONT-PHOTOBIONT INTERACTIONS/ NUTRIENT EXCHANGE/ SYMBIOSIS/ TROPHIC CLASSES
    Abstract: 5 fig. 2 tab. [Review article, considering the biology and interactions of the bionts in lichens, and the arguments regarding mutualism vs parasitism in the lichen association.]
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  • Schroeter, B/ Green, TGA/ Kappen, L/ Seepelt, RD 1994: Carbon dioxide exchange at subzero temperatures. Field measurements on Umbilicaria aprina in Antarctica. - Cryptogamic Botany 4(2): 233-241. [RLL List # 158 / Rec.# 16717]
    Keywords: ANTARCTICA/ DARK RESPIRATION/ PHOTOSYNTHESIS/ SNOW/ TEMPERATURE/ UMBILICARIA
    Abstract: 5 fig.
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  • Wessels, DCJ/ Kappen, L 1994: Aspect, microclimate and photosynthetic activity of lichens in the northern Transvaal and Karoo, South Africa. - Cryptogamic Botany 4(2): 242-253. [RLL List # 158 / Rec.# 20193]
    Keywords: ASPECT/ ECOLOGY/ ENDOLITHIC/ KAROOWIA/ MICROCLIMATE/ PHOTOSYNTHESIS/ SOUTH AFRICA/ TRANSVAAL
    Abstract: 8 fig. 1 tab. [The in situ photosynthetic behaviour of endo- and epilithic lichens characteristic of two arid regions of South Africa was investigated.
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  • Tibell, L/ Kappen, L/ Hill, D (eds.) 1994/1995: Second International Lichenology Symposium (IAL2). - Gustav Fischer, Stuttgart. 115-253, 255-319, 15-97 pp. [RLL List # 158 / Rec.# 18582]
    Keywords: IAL/ IAL2/ MEETING/ SYMPOSIUM
    Abstract: [Papers from the IAL2 symposium, "Progress and Problems in Lichenology in the Nineties, " held in Hemmeslöv, Sweden, in 1992. Published in Vol. 4 (No. 2 and No. 3) and Vol. 5 (No. 1) of Cryptogamic Botany. The first section (Vol. 4, No. 2, 1994), "Ecology and Ecophysiology, " is dedicated to Professor Otto Lange, preeminent researcher on the ecology and physiology of lichens. The second section (Vol. 4, No. 3, 1994) is titled "Morphology and Development, " and the third and fourth sections (Vol. 5, No. 1, 1995) are titled "Chemistry and Chemotaxonomy" and "DNA and RNA Data in Lichen Studies" ]
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  • Kappen, L 1995: Aktivität und Besiedlungspotential von Kryptogamen in der Antarktis. - Berichte zur Polarforschung 155: 26-27. [RLL List # 165 / Rec.# 9812]
    Keywords: ANTARCTIC/ PHOTOSYNTHESIS
    Abstract: 1 fig.
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  • Kappen, L/ Sommerkorn, M/ Schroeter, B 1995: Carbon acquisition and water relations of lichens in polar regions - potentials and limitations. - Lichenologist 27(6): 531-545. [RLL List # 161 / Rec.# 9790]
    Keywords: ANTARCTIC/ ARCTIC/ CARBON EXCHANGE/ CO2 FIXATION/ GROWTH/ TEMPERATURE/ WATER RELATIONS
    Abstract: 6 fig. 2 tab.
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  • Schipperges, B/ Kappen, L/ Sonesson, M 1995: Intraspecific variations of morphology and physiology of temperate to Arctic populations of Cetraria nivalis. - Lichenologist 27(6): 517-529. [RLL List # 161 / Rec.# 16623]
    Keywords: ANATOMY/ CHLOROPHYLL CONTENT/ CO2 EXCHANGE/ ECOTYPES/ INFRASPECIFIC VARIATION/ MORPHOLOGY/ PHOTOSYNTHESIS/ TRANSPLANTS/ WATER RELATIONS
    Abstract: 6 fig. ["Five populations of the circumpolar Arctic-alpine lichen species Cetraria nivalis were sampled along a latitudinal gradient from the temperate to the Arctic climatic zone. The populations were compared with respect to their CO2 exchange, water relations and morphology/anatomy."]
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  • Schroeter, B/ Green, TGA/ Kappen, L/ Seppelt, RD/ Maseyk, K 1995: The relationship between electron transport rate through PS II and CO2 gas exchange in Antarctic cryptogams. - In: Mathis, P (ed.): Photosynthesis: from Light to Biosphere. 5. Kluwer Academic Publishers,, pp. 893-896. [RLL List # 163 / Rec.# 16718]
    Keywords: ANTARCTIC/ CHLOROPHYLL FLUORESCENCE/ CO2 EXCHANGE/ ELECTRON TRANSPORT RATE/ PHOTOSYNTHESIS/ PHOTOSYSTEM II
    Abstract: 4 fig. [Study of Umbilicaria aprina and Bryum argenteum.]
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  • Schroeter, B/ Olech, M/ Kappen, L/ Heitland, W 1995: Ecophysiological investigations of Usnea antarctica in the maritime Antarctic. I. Annual microclimatic conditions and potential primary production. - Antarctic Science 7(3): 251-260. [RLL List # 163 / Rec.# 16725]
    Keywords: ANTARCTIC/ HUMIDITY/ MARITIME/ MICROCLIMATE/ PHOTOSYNTHESIS/ PRIMARY PRODUCTION/ SEASONAL FLUCTUATIONS/ USNEA
    Abstract: 12 fig. ["Photosynthetic photon flux density (PPFD), air relative humidity and thallus temperature (TT) were measured in Usnea antarctica over a period of 12 months at a coastal rock on King George Island, South Shetland Islands."]
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  • Kappen, L/ Schroeter, B/ Hestmark, G/ Winkler, JB 1996: Field measurements of photosynthesis of umbilicarious lichens in winter. - Botanica Acta 109: 292-298. [RLL List # 165 / Rec.# 9783]
    Keywords: COLD TEMPERATURES/ FREEZING/ PHOTOSYNTHESIS/ RESPIRATION/ TEMPERATURE/ UMBILICATE/ WINTER
    Abstract: 6 fig. ["The photosynthetic performance of Lasallia pustulata and Umbilicaria spodochroa was measured both in the field on granitic rock in southern Norway and in the laboratory under controlled conditions of light and temperature."]
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  • Kappen, L/ Schroeter, B/ Scheidegger, C/ Sommerkorn, M/ Hestmark, G 1996: Cold resistance and metabolic activity of lichens below 0°C. - Advances in Space Research 18(12): 119-128. [RLL List # 166 / Rec.# 9786]
    Keywords: COLD RESISTANCE/ FREEZING/ LOW TEMPERATURE/ PHOTOSYNTHESIS/ POIKILOHYDRIC/ TEMPERATURE/ WATER RELATIONS
    Abstract: 9 fig. ["Laboratory measurements show that lichens are extremely tolerant of freezing stress and of low-temperature exposure. Metabolic activity recovered quickly after severe and extended cold treatment. Experimental results demonstrate also that CO2 exchange is already active at around -20°C. The psychrophilic character of polar lichen species is demonstrated by optimum temperatures for net photosynthesis between 0 and 15°C. In situ measurements show that lichens begin photosynthesizing below 0°C if the dry thalli receive fresh snow. The lowest temperature measured in active lichens was -17°C at a continental Antarctic site. The fine structure and the hydration state of photobiont and mycobiont cells were studied by low-temperature scanning electron microscopy (LTSEM) of frozen hydrated specimens."]
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  • Hestmark, G/ Schroeter, B/ Kappen, L 1997: Intrathalline and size-dependent patterns of activity in Lasallia pustulata and their possible consequences for competitive interactions. - Functional Ecology 11: 318-322. [RLL List # 169 / Rec.# 8495]
    Keywords: COMPETITION/ GROWTH FORMS/ INTRATHALLINE VARIABILITY/ LASALLIA/ PHOTOSYNTHESIS/ SIZE/ WATER RELATIONS
    Abstract: 3 fig. [Study of intrathalline moisture gradients, and its effect on photosynthesis and competitive interactions between thalli.]
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  • Kappen, L (ed.) 1997: New Species and Novel Aspects in Ecology and Physiology of Lichens. In Honour of O. L. Lange. - Bibliotheca Lichenologica, 67, J. Cramer, Berlin, Stuttgart. 309 pp. [RLL List # 169 / Rec.# 9763]
    Keywords: LANGE
    Abstract: [A collection of 24 diverse papers, compiled in honor of the eminent German lichenologist Otto L. Lange, known particularly for his many pioneering works on lichen ecology and water relations.]
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  • Kappen, L 1997: Flechten in der Antarktis. - In: Schöller, H (ed.): Flechten: Geschichte, Biologie, Systematik, Ökologie, Naturschutz und kulturelle Bedeutung. Kleine Senckenberg-Reihe, Senckenbergische Naturforschende Gesellschaft, Frankfurt am Main, pp. 149-156. [RLL List # 186 / Rec.# 22824]
    Keywords: ANTARCTIC/ GENERAL TEXTBOOK
    Abstract: 8 fig.
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  • Schlensog, M/ Schroeter, B/ Sancho, LG/ Pintado, A/ Kappen, L 1997: Effect of strong irradiance on photosynthetic performance of the melt-water dependent cyanobacterial lichen Leptogium puberulum (Collemataceae) Hue from the maritime Antarctic. - In: Kappen, L (ed.): New Species and Novel Aspects in Ecology and Physiology of Lichens. In Honour of O. L. Lange. Bibliotheca Lichenologica, J. Cramer, Berlin, Stuttgart, pp. 235-246. [RLL List # 169 / Rec.# 16638]
    Keywords: ANTARCTIC/ CO2 EXCHANGE/ LEPTOGIUM/ LIGHT/ MARITIME/ PHOTOSYSTEM II/ TEMPERATURE
    Abstract: 4 fig. [... L. puberulum is well adapted to tolerate extreme irradiance conditions likely to impact lichens growing in meltwater flurries without any need for damage-repair-cycles."]
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  • Schlensog, M/ Schroeter, B/ Sancho, LG/ Pintado, A/ Kappen, L 1997: Photosynthetic performance of the cyanobacterial lichen Leptogium puberulum Hue (Collemataceae) in the maritime Antarctica [Comportamiento fotosintético del liquen con cianobacterias Leptogium puberulum Hue (Collemataceae) en la Antártida marítima]. - Boletín de la Real Sociedad Española de Historia Natural (Biologica) 93(1-4): 105-111. [RLL List # 176 / Rec.# 16639]
    Keywords: ANTARCTICA/ CYANOLICHENS/ DARK RESPIRATION/ LEPTOGIUM/ MARITIME/ MELTWATER/ PHOTOSYNTHESIS/ RESPIRATION
    Abstract: 4 fig. 1 tab. [This lichen is particularly adapted to habitats with springtime meltwater.]
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  • Schroeter, B/ Kappen, L/ Green, TGA/ Seppelt, RD 1997: Lichens and the Antarctic environment: effects of temperature and water availability on photosynthesis. - In: Lyons, WB/Howard-Williams, C/Hawes, I (eds.): Ecosystem Processes in Antarctic Ice-free Landscapes. A. A. Balkema, Rotterdam, pp. 103-117. [RLL List # 176 / Rec.# 16722]
    Keywords: ANTARCTICA/ PHOTOSYNTHESIS/ SNOW/ TEMPERATURE/ UMBILICARIA/ WATER RELATIONS
    Abstract: 8 fig. [From the Proceedings of an International Workshop on Polar Desert Ecosystems, held in Christchurch, New Zealand, 1-4 July 1996. "In this paper we demonstrate to what extent lichens are able to profit from snow as a water source for rehydration under the extreme environmental conditions in Continental Antarctica. Net photosynthesis of the foliose macrolichen Umbilicaria aprina occurred at subzero temperatures in the field even when snow was the only water source."]
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  • Schroeter, B/ Schulz, F/ Kappen, L 1997: Hydration-related spatial and temporal variation of photosynthetic activity in Antarctic lichens. - In: Battaglia, B/Valencia, J/Walton, DWH (eds.): Antarctic Communities. Species, Structure and Survival. Cambridge University Press, Cambridge, pp. 221-225. [RLL List # 174 / Rec.# 16730]
    Keywords: ANTARCTIC/ CHLOROPHYLL FLUORESCENCE/ CO2/ GAS EXCHANGE/ PHOTOSYNTHESIS/ PRIMARY PRODUCTION
    Abstract: 3 fig.
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  • Winkler, JB/ Kappen, L 1997: Photosynthetic capacity of endolithic lichens from South-Africa. - In: Kappen, L (ed.): New Species and Novel Aspects in Ecology and Physiology of Lichens. In Honour of O. L. Lange. Bibliotheca Lichenologica, J. Cramer, Berlin, Stuttgart, pp. 165-181. [RLL List # 169 / Rec.# 20332]
    Keywords: CO2 EXCHANGE/ DARK RESPIRATION/ ENDOLITHIC/ PHOTOSYNTHESIS/ SOUTH AFRICA/ TEMPERATURE
    Abstract: 9 fig.
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  • Buschbom, J/ Kappen, L 1998: The role of microclimate for the lichen vegetation pattern on rock surfaces in the subarctic [Differnezierung ausgewählter subarktischer epilithischer Flechtengemeinschaften nach ihren mikroklimatischen Bedingungen]. - Sauteria 9: 79-94. [RLL List # 173 / Rec.# 2735]
    Keywords: COMMUNITIES/ HUMIDITY/ LIGHT/ MOISTURE/ SCHIST/ SUBARCTIC/ SWEDEN/ TEMPERATURE
    Abstract: 5 fig. [Study of the effect of light, temperature, and relative humidity in lichen communities on garnet-mica-schist boulders near Abisko in northern Sweden. (From the IAL3 Symposium, held Sept. 1-7, 1996, in Salzburg, Austria, Poster Contributions.)]
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  • Green, TGA/ Schroeter, B/ Kappen, L/ Seppelt, RD/ Maseyk, K 1998: An assessment of the relationship between chlorophyll a fluorescence and CO2 gas exchange from field measurements on a moss and lichen. - Planta 206: 611-618. [RLL List # 180 / Rec.# 21052]
    Keywords: CHLOROPHYLL/ CHLOROPHYLL FLUORESCENCE/ CO2/ ELECTRON TRANSPORT RATE/ GAS EXCHANGE/ PHOTOSYNTHESIS/ RESPIRATION
    Abstract: 7 fig. [Study of Umbilicaria aprina and Bryum argenteum.]
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  • Kappen, L 1998: Terrestrische Mikroalgen und Flechten in der Antarktis. - In: Hausmann, W/Kremer, BP (eds.): Extremophile. Mikroorganismen in ausgefallenen Lebensräumen. Verlag Chemie, Weinheim, pp. 3-25. [RLL List # 179 / Rec.# 9813]
    Abstract: 6 fig. 2 tab.
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  • Kappen, L 1998: The lichens, a successful fungal group, in extreme hot and cold environments (an introduction). - In: : Sixth International Mycological Congress (IMC6). Abstracts. , pp. 179. [RLL List # 182 / Rec.# 21714]
    Keywords: COLD/ EXTREME ENVIRONMENTS/ HOT/ STRESS/ TEMPERATURE
    Abstract: [Abstract from presentation at IMC6, held in Jerusalem, August 23-28, 1998.]
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  • Kappen, L/ Schroeter, B/ Green, TGA/ Seppelt, RD 1998: Chlorophyll a fluorescence and CO2 exchange on Umbilicaria aprina under extreme light stress in the cold. - Oecologia 113(3): 325-331. [RLL List # 171 / Rec.# 9781]
    Keywords: CHLOROPHYLL/ CO2 EXCHANGE/ FLUORESCENCE/ LIGHT/ TEMPERATURE/ UMBILICARIA
    Abstract: 5 fig. [Simultaneous field measurements of CO2 exchange and chlorophyll a fluorescence indicate no photoinhibition when the lichen was exposed to strong sun irradiance for nearly 11 hours a day.]
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  • Kappen, L/ Schroeter, B/ Green, TGA/ Seppelt, RD 1998: Microclimatic conditions, meltwater moistening, and the distributional pattern of Buellia frigida on rock in a southern continental Antarctic habitat. - Polar Biology 19: 101-106. [RLL List # 176 / Rec.# 9782]
    Keywords: ANTARCTIC/ BUELLIA/ LIGHT/ MELTWATER/ MICROCLIMATE/ PATTERNING
    Abstract: 4 fig. 1 tab.
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  • Schulz, F/ Winkler, JB/ Kappen, L 1998: Components of terrestrial vegetation, pattern and processes. - Berichte zur Polarforschung 299: 54-58. [RLL List # 176 / Rec.# 16754]
    Keywords: ANTARCTICA/ PHYTOSOCIOLOGY/ VEGETATION
    Abstract: 1 fig. [Study on Potter Peninsula of the South Shetland Islands.]
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  • Winkler, JB/ Kappen, L/ Schulz, F 1998: CO2 exchange of two chionophilous lichens in the maritime Antarctic - preliminary results. - Berichte zur Polarforschung 299: 188-192. [RLL List # 176 / Rec.# 20331]
    Keywords: ANTARCTIC/ CHIONOPHILY/ CO2 EXCHANGE/ MARITIME/ PHOTOSYNTHESIS/ TEMPERATURE
    Abstract: 1 fig. [Study using Himantormia lugubris and Lecidea sciatrapha.]
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  • Winkler, JB/ Schulz, F/ Kappen, L 1998: Seasonal variation of abiotic factors in terrestrial habitats. - Berichte zur Polarforschung 299: 28-32. [RLL List # 176 / Rec.# 20333]
    Keywords: ANTARCTIC/ PHOTOSYNTHESIS/ SEASONAL VARIATION/ SNOW/ TEMPERATURE/ WATER RELATIONS
    Abstract: 3 fig.
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  • Kappen, L 1999: Analogien zwischen Verhaltensweisen von Symbiosen, speziell der Flechten, und pflanzlichen Organismen. - In: Beyschlag, W/Steinlein, T (eds.): Ökologie pflanzlicher Interaktionen. Bielefelder Ökologische Beiträge, pp. 121-133. [RLL List # 176 / Rec.# 9814]
    Keywords: ANATOMY/ CO2 EXCHANGE/ PHOTOSYNTHESIS/ STRUCTURE/ SYMBIOSIS
    Abstract: 3 fig. 2 tab.
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  • Kappen, L 1999: Biodiversity or adaptation, what constitutes Antarctic terrestrial ecosystems?. - In: : XIII Simposio de Botánica Criptogámica. Universidad Complutense, Madrid, pp. 9. [RLL List # 178 / Rec.# 9815]
    Keywords: ADAPTATIONS/ ANTARCTICA/ BIODIVERSITY
    Abstract: [Abstract.]
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  • Kappen, L/ Valladares, F 1999: Opportunistic growth and desiccation tolerance: the ecological success of poikilohydrous autotrophs. - In: Pugnaire, FI/Valladares, F (eds.): Handbook of Functional Plant Ecology. Marcel Dekker, Inc., New York, Basel, pp. 9-80. [RLL List # 176 / Rec.# 9792]
    Keywords: DESICCATION/ PHOTOPROTECTION/ PHOTOSYNTHESIS/ POIKILOHYDRIC/ REVIEW/ TEMPERATURE/ WATER RELATIONS
    Abstract: 13 fig. 4 tab. [Review.]
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  • Pannewitz, S/ Schroeter, B/ Scheidegger, C/ Kappen, L 1999: Ecophysiological parameters indicate the quality of Lobaria pulmonaria habitats. - In: Anon. (ed.): International Conference on Lichen Conservation Biology, Licons. Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland, pp. 43. [RLL List # 180 / Rec.# 21303]
    Keywords: CONSERVATION/ ECOLOGY/ GERMANY/ LOBARIA/ SWITZERLAND
    Abstract: [Abstract.]
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  • Sancho, LG/ Schulz, F/ Schroeter, B/ Kappen, L 1999: Bryophyte and lichen flora of South Bay (Livingston Island: South Shetland Islands, Antarctica). - Nova Hedwigia 68(3-4): 301-337. [RLL List # 176 / Rec.# 16204]
    Keywords: ANTARCTICA/ SOUTH SHETLAND ISLANDS
    Abstract: 2 fig. [Reports 110 lichen species, which is said to be the highest number reported for any single Antarctic locality.]
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  • Kappen, L 2000: Some aspects of the great success of lichens in Antarctica. - Antarctic Science 12(3): 314-324. [RLL List # 185 / Rec.# 22528]
    Keywords: ANTARCTIC/ ARCTIC/ CARBON BALANCE/ MICROHABITAT/ PHOTOSYNTHESIS/ RESPIRATION/ REVIEW/ WATER RELATIONS
    Abstract: 7 fig. 3 tab. [Review.]
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  • Pannewitz, S/ Schroeter, B/ Scheidegger, CC/ Kappen, L 2000: Microclimatic parameters and metabolic activity of Lobaria pulmonaria at different habitats in Switzerland. - In: : The Fourth IAL Symposium, Progress and Problems in Lichenology at the Turn of the Millennium. Universitat de Barcelona, Barcelona, pp. 66. [RLL List # 181 / Rec.# 21304]
    Keywords: CARBON FIXATION/ ECOPHYSIOLOGY/ GAS EXCHANGE/ HABITATS/ LOBARIA/ METABOLISM/ MICROCLIMATE/ SWITZERLAND
    Abstract: [Abstract from the International Association for Lichenology's fourth symposium, held in Barcelona, Spain, 3-8 September 2000.]
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  • Schroeter, B/ Kappen, L/ Schulz, F/ Sancho, LG 2000: Seasonal variation in the carbon balance of lichens in the maritime Antarctic: long-term measurements of photosynthetic activity in Usnea aurantiaco-atra. - In: Davison, W/Howard-Williams, C/Broady, P (eds.): Antarctic Ecosystems: Model for Wider Ecological Understanding. Caxton Press, Christchurch, New Zealand, pp. 220-224. [RLL List # 185 / Rec.# 22529]
    Keywords: ANTARCTIC/ CARBON BALANCE/ MARITIME/ MICROCLIMATE/ PHOTOSYNTHESIS/ PRIMARY PRODUCTION/ USNEA
    Abstract: 3 fig. 1 tab. ["Spring is the most productive season of the year and the annual carbon gain is mainly determined by the carbon gain in the spring months."]
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  • Winkler, JB/ Kappen, L 2000: Effects of snow cover on lichen vegetation in the maritime Antarctic. - In: : The Fourth IAL Symposium, Progress and Problems in Lichenology at the Turn of the Millennium. Universitat de Barcelona, Barcelona, pp. 45-46. [RLL List # 181 / Rec.# 21505]
    Keywords: ANTARCTIC/ MARITIME/ SNOW COVER/ VEGETATION
    Abstract: [Abstract from the International Association for Lichenology's fourth symposium, held in Barcelona, Spain, 3-8 September 2000.]
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  • Del-Prado, R/ Sancho, LG/ Kappen, L 2001: Photosynthetic performance of photosymbiotic ascomata in the lichen Teloschistes lacunosus. - Flora 196: 261-268. [RLL List # 185 / Rec.# 22530]
    Keywords: ASCOMATA/ CHLOROPHYLL CONTENT/ LECANORINE/ PHOTOSYNTHESIS/ RESPIRATION/ SEXUAL REPRODUCTION/ TELOSCHISTES
    Abstract: 4 fig. 1 tab.
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  • Kappen, L/ Schroeter, B 2002: Plants and lichens in the Antarctic, their way of life and their relevance to soil formation. - In: Beyer, L/Bölter, M (eds.): Geoecology of Antarctic Ice-Free Coastal Landscapes. Ecological Studies, Springer-Verlag, Berlin, Heidelberg, pp. 327-373. [RLL List # 191 / Rec.# 24417]
    Keywords: ANTARCTIC/ COLONIZATION/ ECOPHYSIOLOGY/ FLORISTICS/ GROWTH/ GROWTH FORMS/ ION UPTAKE/ PEDOGENESIS/ SOIL FORMATION/ SUCCESSION/ WATER RELATIONS
    Abstract: 1 fig. 3 tab.
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  • Stolley, G/ Kappen, L 2002: Contributions to the lichen flora of Menorca (Balearic Islands). - Nova Hedwigia 75(1-2): 121-175. [RLL List # 188 / Rec.# 23449]
    Keywords: BALEARIC ISLANDS/ ISLANDS/ MENORCA
    Abstract: 8 fig. 1 tab. [New to the Balearic Islands: Arthonia spadicea, Byssoloma subdiscordans, Caloplaca atroflava, C. festivella, Collema crispum, C. polycarpon, Dactylospora acarosporae, Lecanographa lyncea, Lecanora achariana, L. cenisia, Lichenostigma rugosa, Pertusaria velata, Phlyctis argena, Physconia petraea, Ramalina mollis, Rinodina occulta, Roccella arnoldii, R. fuciformis, "Stemphylium" botryosum. Another 56 species are new to Menorca.]
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    Current date: 2019.02.17.OK