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| Web URL(s): | https://academic.oup.com/aob/article/41/4/801/240355
Last checked: 02/15/2017
Notes: Guide page |
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| Publication Type:
| Refereed |
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| Author(s): | Jones, K. |
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| Author Affiliation: | Department of Botany, University of Pretoria, Pretoria, South Africa |
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| Title: | The effects of moisture on acetylene reduction by mats of blue-green algae in sub-tropical grassland |
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| Source: | Annals of Botany. Vol. 41, No. 4, July 1977, p. 801-806. |
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| Publishing Information: | London, Oxford University Press |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Nitrogen fixation; Desiccation; Algae; Pennisetum clandestinum; Nostoc; Soil water content
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| Geographic Terms: | South Africa |
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| Abstract/Contents: | "During the dry winter months desiccation is the main factor preventing N fixation by mats of blue-green algae (almost entirely Nostoc sp.) in kikuyu (Pennisetum clandestinum) lawns in Pretoria. In the wetter summer months a few days of sunshine without rain will dry out the algal mats and depress N fixation unless the algae are protected by swards of grass. Dry mats resume N fixation within an hour of becoming damp and attain their normal rate of fixation within 5 h. Maximum fixation rates occur at 100% RH and with soil moisture contents of 22 to 42%. Dry algal mats are unable to take up sufficient water as vapour (even in saturating conditions) to permit resumption of acetylene reduction. Algal-dominated soils show greater water retention than adjacent bare soils." |
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| Language: | English |
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| References: | 17 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jones, K. 1977. The effects of moisture on acetylene reduction by mats of blue-green algae in sub-tropical grassland. Ann. Bot. 41(4):p. 801-806. |
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| Web URL(s):
https://academic.oup.com/aob/article/41/4/801/240355
Last checked: 02/15/2017
Notes: Guide page |
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MSU catalog number: QK 1 .A53 |
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