Transparent exopolymer particles in a deep-sea hydrothermal system: Guaymas Basin,Gulf of California |
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| Authors: | L Prieto J P Cowen |
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| Institution: | (1) Lamont-Doherty Earth Observatory of Columbia University, P.O. Box 1000, Palisades, New York 10964, USA;(2) Deparment of Oceanography, University of Hawaii, HI Honolulu, 96822, USA;(3) Instituto de Ciencias Marinas de Andalucía (CSIC), 11510 Puerto Real, Cadiz, Spain |
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| Abstract: | This is the first report of transparent exopolymer particle (TEP) concentrations within deep-sea hydrothermal vent systems
using colorimetric methods, measuring TEP in supernatants of sediments surrounding the vents, in fluids emanating directly
from hydrothermal vents and in neutrally buoyant hydrothermal plumes. Samples were collected at Guaymas Basin (Gulf of California),
a sedimented hydrothermal system. TEP concentrations within the hydrothermal fluids were significantly greater than the only
other report of TEP in deep water. The range of values for TEP abundance were 8–6,451 μg/L of gum xanthan equivalents, the
highest values being associated with supernatants of microbial mat-covered sediments. The potential sources and significance
of the high concentrations of TEP observed in this deep-sea hydrothermal environment are discussed. |
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