Surface reflectance properties of Antarctic moss and their relationship to plant species, pigment composition and photosynthetic function
We investigated how surface reflectance properties and pigment concentrations of Antarctic moss varied over species, sites, microtopography, and with water content. We found that species had significantly different surface reflectance properties, particularly in the region of the red edge (approxima...
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ftunivwollongong:oai:ro.uow.edu.au:scipapers-1051 2023-05-15T13:38:58+02:00 Surface reflectance properties of Antarctic moss and their relationship to plant species, pigment composition and photosynthetic function Lovelock, C. E. Robinson, Sharon A. 2002-01-01T08:00:00Z application/pdf https://ro.uow.edu.au/scipapers/48 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1051&context=scipapers unknown Research Online https://ro.uow.edu.au/scipapers/48 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1051&context=scipapers Faculty of Science - Papers (Archive) Bryum pseudotriquetrum Ceratodon purpureus chlorophyll chlorophyll fluorescence Grimmia antarctici Photochemical Reflectance Index xanthophyll cycle pigments Life Sciences Physical Sciences and Mathematics Social and Behavioral Sciences article 2002 ftunivwollongong 2020-02-25T10:48:46Z We investigated how surface reflectance properties and pigment concentrations of Antarctic moss varied over species, sites, microtopography, and with water content. We found that species had significantly different surface reflectance properties, particularly in the region of the red edge (approximately 700 nm), but this did not correlate strongly with pigment concentrations. Surface reflectance of moss also varied in the visible region and in the characteristics of the red edge over different sites. Reflectance parameters, such as the Photochemical Reflectance Index (PRI) and Cold Hard Band (CBH) were useful discriminators of site, microtopographic position and water content. The PRI was correlated both with the concentrations of active xanthophyll-cycle pigments and the photosynthetic light use efficiency, Fv/Fm, measured using chlorophyll fluorescence. Water content of moss strongly influenced the amplitude and position of the red-edge as well as the PRI, and may be responsible for observed differences in reflectance properties for different species and sites. All moss showed sustained high levels of photoprotective xanthophyll pigments, especially at exposed sites, indicating moss is experiencing continual high levels of photochemical stress. Article in Journal/Newspaper Antarc* Antarctic Grimmia antarctici University of Wollongong, Australia: Research Online Antarctic |
institution |
Open Polar |
collection |
University of Wollongong, Australia: Research Online |
op_collection_id |
ftunivwollongong |
language |
unknown |
topic |
Bryum pseudotriquetrum Ceratodon purpureus chlorophyll chlorophyll fluorescence Grimmia antarctici Photochemical Reflectance Index xanthophyll cycle pigments Life Sciences Physical Sciences and Mathematics Social and Behavioral Sciences |
spellingShingle |
Bryum pseudotriquetrum Ceratodon purpureus chlorophyll chlorophyll fluorescence Grimmia antarctici Photochemical Reflectance Index xanthophyll cycle pigments Life Sciences Physical Sciences and Mathematics Social and Behavioral Sciences Lovelock, C. E. Robinson, Sharon A. Surface reflectance properties of Antarctic moss and their relationship to plant species, pigment composition and photosynthetic function |
topic_facet |
Bryum pseudotriquetrum Ceratodon purpureus chlorophyll chlorophyll fluorescence Grimmia antarctici Photochemical Reflectance Index xanthophyll cycle pigments Life Sciences Physical Sciences and Mathematics Social and Behavioral Sciences |
description |
We investigated how surface reflectance properties and pigment concentrations of Antarctic moss varied over species, sites, microtopography, and with water content. We found that species had significantly different surface reflectance properties, particularly in the region of the red edge (approximately 700 nm), but this did not correlate strongly with pigment concentrations. Surface reflectance of moss also varied in the visible region and in the characteristics of the red edge over different sites. Reflectance parameters, such as the Photochemical Reflectance Index (PRI) and Cold Hard Band (CBH) were useful discriminators of site, microtopographic position and water content. The PRI was correlated both with the concentrations of active xanthophyll-cycle pigments and the photosynthetic light use efficiency, Fv/Fm, measured using chlorophyll fluorescence. Water content of moss strongly influenced the amplitude and position of the red-edge as well as the PRI, and may be responsible for observed differences in reflectance properties for different species and sites. All moss showed sustained high levels of photoprotective xanthophyll pigments, especially at exposed sites, indicating moss is experiencing continual high levels of photochemical stress. |
format |
Article in Journal/Newspaper |
author |
Lovelock, C. E. Robinson, Sharon A. |
author_facet |
Lovelock, C. E. Robinson, Sharon A. |
author_sort |
Lovelock, C. E. |
title |
Surface reflectance properties of Antarctic moss and their relationship to plant species, pigment composition and photosynthetic function |
title_short |
Surface reflectance properties of Antarctic moss and their relationship to plant species, pigment composition and photosynthetic function |
title_full |
Surface reflectance properties of Antarctic moss and their relationship to plant species, pigment composition and photosynthetic function |
title_fullStr |
Surface reflectance properties of Antarctic moss and their relationship to plant species, pigment composition and photosynthetic function |
title_full_unstemmed |
Surface reflectance properties of Antarctic moss and their relationship to plant species, pigment composition and photosynthetic function |
title_sort |
surface reflectance properties of antarctic moss and their relationship to plant species, pigment composition and photosynthetic function |
publisher |
Research Online |
publishDate |
2002 |
url |
https://ro.uow.edu.au/scipapers/48 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1051&context=scipapers |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Grimmia antarctici |
genre_facet |
Antarc* Antarctic Grimmia antarctici |
op_source |
Faculty of Science - Papers (Archive) |
op_relation |
https://ro.uow.edu.au/scipapers/48 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1051&context=scipapers |
_version_ |
1766112953189269504 |