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Iron localization inAcarosporacolonizing schist on Signy Island
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| Zeitschriftentitel: | Antarctic Science |
|---|---|
| Personen und Körperschaften: | , , , , , |
| In: | Antarctic Science, 25, 2013, 1, S. 24-30 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Cambridge University Press (CUP)
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| Schlagwörter: |
| author_facet |
Purvis, O.W. Convey, P. Flowerdew, M.J. Peat, H.J. Najorka, J. Kearsley, A. Purvis, O.W. Convey, P. Flowerdew, M.J. Peat, H.J. Najorka, J. Kearsley, A. |
|---|---|
| author |
Purvis, O.W. Convey, P. Flowerdew, M.J. Peat, H.J. Najorka, J. Kearsley, A. |
| spellingShingle |
Purvis, O.W. Convey, P. Flowerdew, M.J. Peat, H.J. Najorka, J. Kearsley, A. Antarctic Science Iron localization inAcarosporacolonizing schist on Signy Island Geology Ecology, Evolution, Behavior and Systematics Oceanography |
| author_sort |
purvis, o.w. |
| spelling |
Purvis, O.W. Convey, P. Flowerdew, M.J. Peat, H.J. Najorka, J. Kearsley, A. 0954-1020 1365-2079 Cambridge University Press (CUP) Geology Ecology, Evolution, Behavior and Systematics Oceanography http://dx.doi.org/10.1017/s0954102012000582 <jats:title>Abstract</jats:title><jats:p>A small, inconspicuous lichen,<jats:italic>Acarospora</jats:italic>cf.<jats:italic>badiofusca</jats:italic>, was discovered colonizing iron-stained quartz mica schists on the lower slope of Manhaul Rock, a recently exposed nunatak on the McLeod Glacier, Signy Island, South Orkney Islands. Thallus colour ranged from rust on exposed rock surfaces to paler orange and green in shaded crevices. This study addressed the hypothesis that colour reflects element localization, and considered substance localization within lichen tissues and responses to stress. Electron microprobe analysis of specimens confirmed that Fe is localized principally in the outer rust-coloured part of the cortex, confirming that the colour reflects Fe localization. Oxalates, widely reported as contributing to tolerance mechanisms to environmental stress, were not detected using X-ray diffraction. The upper thallus surface consisted of sub-micron particulate phases containing Fe, Al and O, suggesting mixed oxide/hydroxide phases are present and play a role in photoprotection.</jats:p> Iron localization in<i>Acarospora</i>colonizing schist on Signy Island Antarctic Science |
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10.1017/s0954102012000582 |
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Antarctic Science |
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| title |
Iron localization inAcarosporacolonizing schist on Signy Island |
| title_unstemmed |
Iron localization inAcarosporacolonizing schist on Signy Island |
| title_full |
Iron localization inAcarosporacolonizing schist on Signy Island |
| title_fullStr |
Iron localization inAcarosporacolonizing schist on Signy Island |
| title_full_unstemmed |
Iron localization inAcarosporacolonizing schist on Signy Island |
| title_short |
Iron localization inAcarosporacolonizing schist on Signy Island |
| title_sort |
iron localization in<i>acarospora</i>colonizing schist on signy island |
| topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
| url |
http://dx.doi.org/10.1017/s0954102012000582 |
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2013 |
| physical |
24-30 |
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<jats:title>Abstract</jats:title><jats:p>A small, inconspicuous lichen,<jats:italic>Acarospora</jats:italic>cf.<jats:italic>badiofusca</jats:italic>, was discovered colonizing iron-stained quartz mica schists on the lower slope of Manhaul Rock, a recently exposed nunatak on the McLeod Glacier, Signy Island, South Orkney Islands. Thallus colour ranged from rust on exposed rock surfaces to paler orange and green in shaded crevices. This study addressed the hypothesis that colour reflects element localization, and considered substance localization within lichen tissues and responses to stress. Electron microprobe analysis of specimens confirmed that Fe is localized principally in the outer rust-coloured part of the cortex, confirming that the colour reflects Fe localization. Oxalates, widely reported as contributing to tolerance mechanisms to environmental stress, were not detected using X-ray diffraction. The upper thallus surface consisted of sub-micron particulate phases containing Fe, Al and O, suggesting mixed oxide/hydroxide phases are present and play a role in photoprotection.</jats:p> |
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| author | Purvis, O.W., Convey, P., Flowerdew, M.J., Peat, H.J., Najorka, J., Kearsley, A. |
| author_facet | Purvis, O.W., Convey, P., Flowerdew, M.J., Peat, H.J., Najorka, J., Kearsley, A., Purvis, O.W., Convey, P., Flowerdew, M.J., Peat, H.J., Najorka, J., Kearsley, A. |
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| description | <jats:title>Abstract</jats:title><jats:p>A small, inconspicuous lichen,<jats:italic>Acarospora</jats:italic>cf.<jats:italic>badiofusca</jats:italic>, was discovered colonizing iron-stained quartz mica schists on the lower slope of Manhaul Rock, a recently exposed nunatak on the McLeod Glacier, Signy Island, South Orkney Islands. Thallus colour ranged from rust on exposed rock surfaces to paler orange and green in shaded crevices. This study addressed the hypothesis that colour reflects element localization, and considered substance localization within lichen tissues and responses to stress. Electron microprobe analysis of specimens confirmed that Fe is localized principally in the outer rust-coloured part of the cortex, confirming that the colour reflects Fe localization. Oxalates, widely reported as contributing to tolerance mechanisms to environmental stress, were not detected using X-ray diffraction. The upper thallus surface consisted of sub-micron particulate phases containing Fe, Al and O, suggesting mixed oxide/hydroxide phases are present and play a role in photoprotection.</jats:p> |
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| spelling | Purvis, O.W. Convey, P. Flowerdew, M.J. Peat, H.J. Najorka, J. Kearsley, A. 0954-1020 1365-2079 Cambridge University Press (CUP) Geology Ecology, Evolution, Behavior and Systematics Oceanography http://dx.doi.org/10.1017/s0954102012000582 <jats:title>Abstract</jats:title><jats:p>A small, inconspicuous lichen,<jats:italic>Acarospora</jats:italic>cf.<jats:italic>badiofusca</jats:italic>, was discovered colonizing iron-stained quartz mica schists on the lower slope of Manhaul Rock, a recently exposed nunatak on the McLeod Glacier, Signy Island, South Orkney Islands. Thallus colour ranged from rust on exposed rock surfaces to paler orange and green in shaded crevices. This study addressed the hypothesis that colour reflects element localization, and considered substance localization within lichen tissues and responses to stress. Electron microprobe analysis of specimens confirmed that Fe is localized principally in the outer rust-coloured part of the cortex, confirming that the colour reflects Fe localization. Oxalates, widely reported as contributing to tolerance mechanisms to environmental stress, were not detected using X-ray diffraction. The upper thallus surface consisted of sub-micron particulate phases containing Fe, Al and O, suggesting mixed oxide/hydroxide phases are present and play a role in photoprotection.</jats:p> Iron localization in<i>Acarospora</i>colonizing schist on Signy Island Antarctic Science |
| spellingShingle | Purvis, O.W., Convey, P., Flowerdew, M.J., Peat, H.J., Najorka, J., Kearsley, A., Antarctic Science, Iron localization inAcarosporacolonizing schist on Signy Island, Geology, Ecology, Evolution, Behavior and Systematics, Oceanography |
| title | Iron localization inAcarosporacolonizing schist on Signy Island |
| title_full | Iron localization inAcarosporacolonizing schist on Signy Island |
| title_fullStr | Iron localization inAcarosporacolonizing schist on Signy Island |
| title_full_unstemmed | Iron localization inAcarosporacolonizing schist on Signy Island |
| title_short | Iron localization inAcarosporacolonizing schist on Signy Island |
| title_sort | iron localization in<i>acarospora</i>colonizing schist on signy island |
| title_unstemmed | Iron localization inAcarosporacolonizing schist on Signy Island |
| topic | Geology, Ecology, Evolution, Behavior and Systematics, Oceanography |
| url | http://dx.doi.org/10.1017/s0954102012000582 |