Tab. 1: Mean water loss by mosses and lichens at 40% ...
The loss of water in a desiccating atmosphere (c.40% r.h. at 10°C) and uptake of water from a saturated atmosphere (100% r.h. at 10°C) was recorded at intervals over periods of many hours or days in the dominant mosses and macroiichens occurring near the Australian Casey Station. Wilkes Land, contin...
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| Format: | Dataset |
| Language: | English |
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PANGAEA
1988
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| Online Access: | https://dx.doi.org/10.1594/pangaea.762952 https://doi.pangaea.de/10.1594/PANGAEA.762952 |
| Summary: | The loss of water in a desiccating atmosphere (c.40% r.h. at 10°C) and uptake of water from a saturated atmosphere (100% r.h. at 10°C) was recorded at intervals over periods of many hours or days in the dominant mosses and macroiichens occurring near the Australian Casey Station. Wilkes Land, continental Antarctica. While major differences exist in the water holding capacity and rates of water loss between mosses and lichens, the minimum levels attained after prolonged exposure to desiccating conditions are remarkably similar. By contrast, the volume of water absorbed from a saturated atmosphere is very similar in both groups of cryptogams. Morphological and anatomical characters are responsible for many of the differences, both between species, and within species exhibiting different growth features. Thus, significantly larger amounts of water are held by colonies of Bryum algens with a dense tomentum of rhizoids than those with sparse rhizoids; similarly, the rhizinate Umbilicaria aprina held a greater ... : Supplement to: Smith, Ronald I Lewis (1988): 2.5 Aspects of cryptogam water relations at a Continental Antarctic Site. Polarforschung, 58(2/3), 139-153 ... |
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