The Effects of Temperature and Moisture on CO2Uptake and Total Resistance to Water Loss in the Antarctic Foliose Lichen Umbilicaria antarctica
Maximum net photosynthesis of field-fresh thalli, illuminated at 200 μmol photons m-2s-1(PAR), was attained at 13⚬C and 1.10 g g-1water content. Small but significant rates of photosynthesis were measured at -5.5⚬C. Depression of net photosynthesis at high thallus water contents is explained in term...
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| Veröffentlicht in: | The New phytologist 1989-04, Vol.111 (4), p.673-682 |
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| container_end_page | 682 |
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| container_issue | 4 |
| container_start_page | 673 |
| container_title | The New phytologist |
| container_volume | 111 |
| creator | Harrisson, P. M. Walton, D. W. H. Rothery, P. |
| description | Maximum net photosynthesis of field-fresh thalli, illuminated at 200 μmol photons m-2s-1(PAR), was attained at 13⚬C and 1.10 g g-1water content. Small but significant rates of photosynthesis were measured at -5.5⚬C. Depression of net photosynthesis at high thallus water contents is explained in terms of thallus anatomy. Calculation of evaporative resistance of the thallus by a new method showed a moisture-dependent response pattern, and was in agreement with direct observations made on other foliose species. |
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Calculation of evaporative resistance of the thallus by a new method showed a moisture-dependent response pattern, and was in agreement with direct observations made on other foliose species.</description><identifier>ISSN: 0028-646X</identifier><identifier>EISSN: 1469-8137</identifier><language>eng</language><publisher>Cambridge University Press</publisher><subject>Antarctic regions ; Carbon dioxide ; Chlorophylls ; Lichens ; Moisture content ; Photosynthesis ; Respiration ; Thallus ; Water loss ; Water temperature</subject><ispartof>The New phytologist, 1989-04, Vol.111 (4), p.673-682</ispartof><rights>Copyright 1989 Trustees of The New Phytologist</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/2556677$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/2556677$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,57992,58225</link.rule.ids></links><search><creatorcontrib>Harrisson, P. 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Calculation of evaporative resistance of the thallus by a new method showed a moisture-dependent response pattern, and was in agreement with direct observations made on other foliose species.</description><subject>Antarctic regions</subject><subject>Carbon dioxide</subject><subject>Chlorophylls</subject><subject>Lichens</subject><subject>Moisture content</subject><subject>Photosynthesis</subject><subject>Respiration</subject><subject>Thallus</subject><subject>Water loss</subject><subject>Water temperature</subject><issn>0028-646X</issn><issn>1469-8137</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqFjMFKw0AQhpei0Fh9Aw_zAoFt2mzao5QWDxVBUtpbma4TujXZCTvjwZfwmQ3au6efn-_jG5lsOnfLfDGdVTcms7ZY5G7uDmNzJ3Kx1i5LV2Tmuz4TrJuGvApwAzV1PSXUz0SA8R1eOMjv4Qir12LXK378kZoVW3gjGQSMnkAZ9qiUYMsiECLokH6Kislr8LDhNrAQbIM_U4Rddwpt8JgCDrmrhPfmtsFW6OG6E_O4Wder5_wiyunYp9Bh-joWZelcVc3-wT8KxVGk</recordid><startdate>19890401</startdate><enddate>19890401</enddate><creator>Harrisson, P. 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M.</creatorcontrib><creatorcontrib>Walton, D. W. H.</creatorcontrib><creatorcontrib>Rothery, P.</creatorcontrib><jtitle>The New phytologist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Harrisson, P. M.</au><au>Walton, D. W. H.</au><au>Rothery, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Effects of Temperature and Moisture on CO2Uptake and Total Resistance to Water Loss in the Antarctic Foliose Lichen Umbilicaria antarctica</atitle><jtitle>The New phytologist</jtitle><date>1989-04-01</date><risdate>1989</risdate><volume>111</volume><issue>4</issue><spage>673</spage><epage>682</epage><pages>673-682</pages><issn>0028-646X</issn><eissn>1469-8137</eissn><abstract>Maximum net photosynthesis of field-fresh thalli, illuminated at 200 μmol photons m-2s-1(PAR), was attained at 13⚬C and 1.10 g g-1water content. Small but significant rates of photosynthesis were measured at -5.5⚬C. Depression of net photosynthesis at high thallus water contents is explained in terms of thallus anatomy. Calculation of evaporative resistance of the thallus by a new method showed a moisture-dependent response pattern, and was in agreement with direct observations made on other foliose species.</abstract><pub>Cambridge University Press</pub></addata></record> |
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| identifier | ISSN: 0028-646X |
| ispartof | The New phytologist, 1989-04, Vol.111 (4), p.673-682 |
| issn | 0028-646X 1469-8137 |
| language | eng |
| recordid | cdi_jstor_primary_2556677 |
| source | Jstor Complete Legacy; Alma/SFX Local Collection; EZB Electronic Journals Library |
| subjects | Antarctic regions Carbon dioxide Chlorophylls Lichens Moisture content Photosynthesis Respiration Thallus Water loss Water temperature |
| title | The Effects of Temperature and Moisture on CO2Uptake and Total Resistance to Water Loss in the Antarctic Foliose Lichen Umbilicaria antarctica |
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