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Nutrient availability affects pigment production but not growth in lichens of biological soil crusts
Recent research suggests that micronutrients such as Mn may limit growth of slow-growing biological soil crusts (BSCs) in some of the drylands of the world. These soil surface communities contribute strongly to arid ecosystem function and are easily degraded, creating a need for new restoration tools. The possibility that Mn fertilization could be used as a restoration tool for BSCs has not been tested previously. We used microcosms in a controlled greenhouse setting to investigate the hypothesis that Mn may limit photosynthesis and consequently growth in Collema tenax, a dominant N-fixing lichen found in BSCs worldwide. We found no evidence to support our hypothesis; furthermore, addition of other nutrients (primarily...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Soil Biology and Biochemistry,
arid lands,
cryptogams,
cyanobacteria,
ecological restoration,
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