Title: Acetylene reduction by cryptogamic crusts from a blackbrush community as related to resaturation and dehydration
Abstract: N2 fixation Microcoleus and Scytonema dominated cryptogamic crusts as related to the resaturation-dehydration phenomenon was estimated using the acetylene reduction assay. The mean maximum fixation rates were estimated to be 6.3 nmol N2 m−2 s−1 for Microcleus and 9.4 nmol N2 m−2 s−1 for Scytonema crusts. Nitrogen inputs were estimated to be 0.7–3.6 kg N2 ha−1 yr−1 for a relic community, 0.4–2.0 kg N2 ha−1 yr−1 for a light grazing community, and 0.02–0.17 kg N2 ha−1 yr−1 for moderate and heavily grazed communities.
Publication Year: 1992
Publication Date: 1992-11-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 81
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