Autotrophic and heterotrophic nutritional budget of salt marsh epiphytic algae

Journal Article · Thu Jan 01 00:00:00 EST 1976 · J. Phycol.; (United States)

DOI:https://doi.org/10.1111/j.1529-8817.1976.tb02870.x· OSTI ID:6548904

Saks, N M; Stone, R J; Lee, J J

This paper addresses the nutrition and relative importance of primary production to heterotrophy of select unicellular green algae and diatoms from the same assemblage. Algal growth responses to nutrient additions varied widely. Such responses included: inhibition and enhancement of growth by amino acid additions: nonstimulation or inhibition by most sugars at 10 mM concentration; glucose stimulation of 6 and inhibition of 3 species; fructose inhibition of 6- and 3-fold stimulation of one species; stimulation of most species by a vitamin mixture, some natural products, metabolite mixtures, etc. Photoassimilation of glucose and acetate in 8 of 12 species occurred. Nine of 12 species took up only a fraction of the total carbon fixed as organic substrate. Enhancement of photosynthesis by glucose and inhibition by acetate was common. The data suggest that attached littoral and shoal marine algal assemblages may play mixed trophic roles at lower levels of the detrital food web.

• Research Organization: City Coll., New York, NY
• OSTI ID: 6548904
• Journal Information: J. Phycol.; (United States), Vol. 12:4
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
AMINO ACIDS
BIOLOGICAL EFFECTS
FOOD CHAINS
UNICELLULAR ALGAE
NUTRITION
ACETATES
ALGAE
BIOCHEMISTRY
BUDGETS
CELL CULTURES
DIATOMS
DIET
FRUCTOSE
GLUCOSE
GROWTH
INHIBITION
METABOLISM
PHOTOCHEMISTRY
PHOTOSYNTHESIS
PLANT CELLS
PLANTS
SACCHARIDES
UPTAKE
ALDEHYDES
CARBOHYDRATES
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
CHEMISTRY
HEXOSES
KETONES
MICROORGANISMS
MONOSACCHARIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
SYNTHESIS
550700* - Microbiology
550500 - Metabolism