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ALGAL BIOMASS AND PRIMARY PRODUCTION WITHIN A TEMPERATE ZONE SANDSTONE
Author(s) -
Bell Robert A.,
Sommerfeld Milton R.
Publication year - 1987
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1987.tb08608.x
Subject(s) - temperate climate , biomass (ecology) , algae , photosynthesis , biology , green algae , grassland , botany , chlorophyll a , chlorophyll , ecosystem , ecology
The use of dimethyl sulfoxide (DMSO) to extract chlorophyll a and l4 C‐labelled photosynthate from endolithic algae of sparsely vegetated, cold temperate grasslands on the Colorado Plateau in Arizona has yielded the first estimates of biomass and photosynthesis for this unusual community. These subsurface microorganisms are found widespread in exposed Coconino Sandstone, a predominant formation in this cold temperate region. The endolithic community in Coconino Sandstone, composed primarily of coccoid blue‐green and coccoid/sarcinoid green algae, yielded a biomass value (as chlorophyll a content) of 87 mg m ‐2 rock surface area and a photosynthetic rate of 0.37 mg CO 2 dm 2 hr ‐1 or 0.48 mg CO 2 mg ‐1 chl a hr ‐1 . The endolithic algal community contributes moderate biomass (5–10%) and substantial photosynthesis (20–80%) to the sparse grassland ecosystem.