... DENNIS LAVOY RICHARD W. SPINRAD NORDA Sea Tech, Inc. ... RICHARD D. WHITING Office of Naval R... more ... DENNIS LAVOY RICHARD W. SPINRAD NORDA Sea Tech, Inc. ... RICHARD D. WHITING Office of Naval Research Code 123 800 North Quincy Street Arlington, VA 22217-5000 PHILIP J. WYATT Wyatt Technology Corporation 820 East Haley Street P. 0. Box 3003 Santa Barbara ...
Annali Dell Istituto Superiore Di Sanita, Feb 1, 1999
Polysaccharide-specific staining techniques have revealed the existence and high abundance of gel... more Polysaccharide-specific staining techniques have revealed the existence and high abundance of gel-like mucilaginous particles formed from the polysaccharide exudates of diatoms. Evidence from both the field and laboratory indicates that these transparent exopolymer particles, known as TEP, are a major component of diatom aggregates and facilitate the flocculation of diatom blooms. TEP are composed primarily of sulfated polysaccharides, molecules known to be resistant to bacterial decomposition. Furthermore, the presence of TEP in diatom aggregates reduces the permeability of aggregates causing them to become neutrally buoyant and accumulate at picnoclines where they eventually develop gas bubbles and float to the surface. Diatom species, such as Cylindrotheca closterium, found abundantly in the Adriatic Sea, may produce particularly unique and copious quantities of TEP resistant to sinking and degradation. This material could accumulate as mucilaginous nuisance scums when environmental conditions favor strong stratification of the water column, high diatom biomass, and the dominance of these species.
Much of the organic carbon sequestered in the deep sea and ocean bottom sediments as relatively r... more Much of the organic carbon sequestered in the deep sea and ocean bottom sediments as relatively rare, large detrital particles generically known as marine snow. Because they are enriched in organic matter, microbes, and nutrients, these large particles also serve as hot spots for biological and chemical process in the water column. Recent evidence reveals that abundant carbohydrate gel particles
Journal of Experimental Marine Biology and Ecology, 1980
... 2). Copepods accounted for most of this migration. ~ Three major patterns of nocturnal migrat... more ... 2). Copepods accounted for most of this migration. ~ Three major patterns of nocturnal migration were evident: migration at dusk only, migrations correlated with moonlight, and migrations unaffected by moon-light. Differences ...
Abstract The effects of two types of drilling mud and eight mud additives on the primary producti... more Abstract The effects of two types of drilling mud and eight mud additives on the primary production of natural assemblages of marine phytoplankton from the Santa Barbara Channel, California, were examined. Exposure for 4 h to BaSO 4 Ca-, Cr-and Fe-...
... Barbara B. Prgzelin and Alice L. Alldredge Oceanic Biology Group, Marine Science Institute an... more ... Barbara B. Prgzelin and Alice L. Alldredge Oceanic Biology Group, Marine Science Institute and Department of Biological Sciences ... inhabiting marine snow can experience high nutrient conditions in these microenvironments, particularly of ammonia (Shanks and Trent 1979 ...
Deep Sea Research Part A. Oceanographic Research Papers, 1989
Blooms of chain-forming marine diatoms were observed in the process of aggregating into centimete... more Blooms of chain-forming marine diatoms were observed in the process of aggregating into centimeter-sized flocs of marine snow in surface waters of the Santa Barbara Channel, California. These aggregates were composed of a rich assemblage of living, actively ...
... DENNIS LAVOY RICHARD W. SPINRAD NORDA Sea Tech, Inc. ... RICHARD D. WHITING Office of Naval R... more ... DENNIS LAVOY RICHARD W. SPINRAD NORDA Sea Tech, Inc. ... RICHARD D. WHITING Office of Naval Research Code 123 800 North Quincy Street Arlington, VA 22217-5000 PHILIP J. WYATT Wyatt Technology Corporation 820 East Haley Street P. 0. Box 3003 Santa Barbara ...
Annali Dell Istituto Superiore Di Sanita, Feb 1, 1999
Polysaccharide-specific staining techniques have revealed the existence and high abundance of gel... more Polysaccharide-specific staining techniques have revealed the existence and high abundance of gel-like mucilaginous particles formed from the polysaccharide exudates of diatoms. Evidence from both the field and laboratory indicates that these transparent exopolymer particles, known as TEP, are a major component of diatom aggregates and facilitate the flocculation of diatom blooms. TEP are composed primarily of sulfated polysaccharides, molecules known to be resistant to bacterial decomposition. Furthermore, the presence of TEP in diatom aggregates reduces the permeability of aggregates causing them to become neutrally buoyant and accumulate at picnoclines where they eventually develop gas bubbles and float to the surface. Diatom species, such as Cylindrotheca closterium, found abundantly in the Adriatic Sea, may produce particularly unique and copious quantities of TEP resistant to sinking and degradation. This material could accumulate as mucilaginous nuisance scums when environmental conditions favor strong stratification of the water column, high diatom biomass, and the dominance of these species.
Much of the organic carbon sequestered in the deep sea and ocean bottom sediments as relatively r... more Much of the organic carbon sequestered in the deep sea and ocean bottom sediments as relatively rare, large detrital particles generically known as marine snow. Because they are enriched in organic matter, microbes, and nutrients, these large particles also serve as hot spots for biological and chemical process in the water column. Recent evidence reveals that abundant carbohydrate gel particles
Journal of Experimental Marine Biology and Ecology, 1980
... 2). Copepods accounted for most of this migration. ~ Three major patterns of nocturnal migrat... more ... 2). Copepods accounted for most of this migration. ~ Three major patterns of nocturnal migration were evident: migration at dusk only, migrations correlated with moonlight, and migrations unaffected by moon-light. Differences ...
Abstract The effects of two types of drilling mud and eight mud additives on the primary producti... more Abstract The effects of two types of drilling mud and eight mud additives on the primary production of natural assemblages of marine phytoplankton from the Santa Barbara Channel, California, were examined. Exposure for 4 h to BaSO 4 Ca-, Cr-and Fe-...
... Barbara B. Prgzelin and Alice L. Alldredge Oceanic Biology Group, Marine Science Institute an... more ... Barbara B. Prgzelin and Alice L. Alldredge Oceanic Biology Group, Marine Science Institute and Department of Biological Sciences ... inhabiting marine snow can experience high nutrient conditions in these microenvironments, particularly of ammonia (Shanks and Trent 1979 ...
Deep Sea Research Part A. Oceanographic Research Papers, 1989
Blooms of chain-forming marine diatoms were observed in the process of aggregating into centimete... more Blooms of chain-forming marine diatoms were observed in the process of aggregating into centimeter-sized flocs of marine snow in surface waters of the Santa Barbara Channel, California. These aggregates were composed of a rich assemblage of living, actively ...
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