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Lobaria amplissima thalli with external cephalodia need more rain than thalli without

Published online by Cambridge University Press:  17 June 2019

Yngvar GAUSLAA Open the ORCID record for Yngvar GAUSLAA [Opens in a new window] ,
Stina JOHLANDER  and
Björn NORDÉN
Yngvar GAUSLAA
Affiliation:
Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, P.O. Box 5003, NO-1432 Ås, Norway. Email: [email protected]
Stina JOHLANDER
Affiliation:
Klareborgsgatan 21b, SE 41467 Gothenburg, Sweden.
Björn NORDÉN
Affiliation:
The Norwegian Institute for Nature Research, Gaustadalléen 21, NO-0349 Oslo, Norway.
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Abstract

Hydration traits determine much of a lichen’s distribution pattern along a climatic gradient but the mechanisms involved are still incompletely known. A higher abundance of large external cephalodia in wet oceanic than in drier climates has previously been reported in Lobaria amplissima. This study aims to quantify how much more rain L. amplissima thalli with external cephalodia would need to fill their internal water holding capacity (WHCinternal) than thalli without. The mean WHCinternal was 1·8 times higher in thalli with external cephalodia than in those without. The WHCinternal when converted to mm rain needed to saturate an average specimen was 1·37 mm (min–max: 0·55–3·8 mm) for a cephalodiate thallus, whereas an average thallus without external cephalodia needed just 0·76 mm (min–max: 0·36–1·3 mm). Known dewfall rates and rates of water uptake from humid air are far below what is needed to saturate even the cephalodiate thallus with the lowest WHCinternal, implying a stronger dependency on rain for thalli with external cephalodia. Thus, the observed trends in this study are consistent with earlier reports of decreasing frequency of external cephalodia from wet to drier climates.

Keywords

cephalolichenscyanobacteriahydration traitsspecific thallus masswater storage
Type
Articles
Information
The Lichenologist , Volume 51 , Issue 3 , May 2019 , pp. 281 - 286
Copyright
Copyright © British Lichen Society 2019 

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References

Blom, H. H., & Lindblom, L. (2010) Lobaria amplissima - haplotype distribution and morphological variation along a climatic gradient in southern Norway. In Abstracts of the 9th International Mycological Congress: The Biology of Fungi, 1–6 August, 2010, Edinburgh, UK, p.3.Google Scholar
Cornejo, C., Derr, C. & Dillman, K. (2017) Ricasolia amplissima (Lobariaceae): one species, three genotypes and a new taxon from south-eastern Alaska. Lichenologist 49: 579–596.Google Scholar
Dal Grande, F., Beck, A., Cornejo, C., Singh, G., Cheenacharoen, S., Nelsen, M. P. & Scheidegger, C. (2014) Molecular phylogeny and symbiotic selectivity of the green algal genus Dictyochloropsis s. l. (Trebouxiophyceae): a polyphyletic and widespread group forming photobiont-mediated guilds in the lichen family Lobariaceae. New Phytologist 202: 455–470.Google Scholar
Ellis, C. J. (2016) Oceanic and temperate rainforest climates and their epiphyte indicators in Britain. Ecological Indicators 70: 125–133.Google Scholar
Esseen, P.-A., Olsson, T., Coxson, D. & Gauslaa, Y. (2015) Morphology influences water storage in hair lichens from boreal forest canopies. Fungal Ecology 18: 26–35.Google Scholar
Gauslaa, Y. (2014) Rain, dew, and humid air as drivers of lichen morphology, function and spatial distribution in epiphytic lichens. Lichenologist 46: 1–16.Google Scholar
Gauslaa, Y. & Coxson, D. (2011) Interspecific and intraspecific variations in water storage in epiphytic old forest foliose lichens. Botany 89: 787–798.Google Scholar
Gauslaa, Y., Solhaug, K. A. & Longinotti, S. (2017) Functional traits prolonging photosynthetically active periods in epiphytic cephalolichens during desiccation. Environmental and Experimental Botany 141: 83–91.Google Scholar
Gauslaa, Y., Johlander, S. & Nordén, B. (2018) Gastropod grazing may prevent reintroduction of declining N-fixing epiphytic lichens in broadleaved deciduous forests. Fungal Ecology 35: 62–69.Google Scholar
Green, T. G. A., Schlensog, M., Sancho, L. G., Winkler, J. B., Broom, F. D. & Schroeter, B. (2002) The photobiont determines the pattern of photosynthetic activity within a single lichen thallus containing cyanobacterial and green algal sectors (photosymbiodeme). Oecologia 130: 191–198.Google Scholar
Hovind, A. Å. (2018) Rehydration and photosynthetic reactivation of old forest cephalolichen member of Lobaria in humid air. MSc thesis, Norwegian University of Life Sciences.Google Scholar
Jordan, P. W. (1970) The internal cephalodia in the genus Lobaria. Bryologist 73: 669–681.Google Scholar
Lange, O. L., Kilian, E. & Ziegler, H. (1986) Water vapor uptake and photosynthesis in lichens: performance differences in species with green and blue-green algae as phycobionts. Oecologia 71: 104–110.Google Scholar
Lange, O. L., Green, T. G. A. & Ziegler, H. (1988) Water status related photosynthesis and carbon isotope discrimination in species of the lichen genus Pseudocyphellaria with green or blue-green photobionts and in photosymbiodemes. Oecologia 75: 494–501.Google Scholar
Longinotti, S., Solhaug, K. A. & Gauslaa, Y. (2017) Hydration traits in cephalolichen members of the epiphytic old forest genus Lobaria (s. lat.). Lichenologist 49: 493–506.Google Scholar
Millbank, J. W. & Kershaw, K. A. (1969) Nitrogen metabolism in lichens. I. Nitrogen fixation in the cephalodia of Peltigera aphthosa. New Phytologist 68: 721–729.Google Scholar
Millbank, J. W. & Kershaw, K. A. (1970) Nitrogen metabolism in lichens. III. Nitrogen fixation by internal cephalodia in Lobaria pulmonaria. New Phytologist 69: 595–597.Google Scholar
Moncada, B., Lücking, R. & Betancourt-Macuase, L. (2013) Phylogeny of the Lobariaceae (lichenized Ascomycota: Peltigerales), with a reappraisal of the genus Lobariella. Lichenologist 45: 203–263.Google Scholar
Phinney, N. H., Solhaug, K. A. & Gauslaa, Y. (2018) Rapid resurrection of chlorolichens in humid air: specific thallus mass drives rehydration and reactivation kinetics. Environmental and Experimental Botany 148: 184–191.Google Scholar
Rasband, W. S. (2014) ImageJ. US National Institutes of Health, Bethesda, Maryland, USA. http://imagej.nih.gov/ij/.Google Scholar
Schlensog, M., Schroeter, B. & Green, T. G. A. (2000) Water dependent photosynthetic activity of lichens from New Zealand: differences in the green algal and the cyanobacterial thallus parts of photosymbiodemes. Bibliotheca Lichenologica 75: 149–160.Google Scholar
Škaloud, P., Friedl, T., Hallmann, C., Beck, A. & Dal Grande, F. (2016) Taxonomic revision and species delimitation of coccoid green algae currently assigned to the genus Dictyochloropsis (Trebouxiophyceae, Chlorophyta). Journal of Phycology 52: 599–617.Google Scholar
Xiao, H., Meissner, R., Seeger, J., Rupp, H., Borg, H. & Zhang, Y. (2013) Analysis of the effect of meteorological factors on dewfall. Science of the Total Environment 452-453: 384–393.Google Scholar