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Related to autotrophy: photosynthesis, heterotrophy


The state of being self-sustaining and able to produce food from inorganic compounds, with carbon dioxide serving as the sole source of carbon.
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References in periodicals archive ?
Further, intermediate levels of nutrients under low light attenuation by TSS and macrophytes potentially supported higher phytoplankton biomass, pelagic GPP and the subsequent net autotrophy in waters of St 30 comparing with stations more recently dredged (St 02 and St 15).
Although giant clams rely greatly on autotrophy as the major source of carbon, heterotrophy is also important to the total energy needed by the clam for respiration and growth (Klumpp et al.
Exceptions are losses attributed to autotrophy and heterotrophy respiration that indirectly are estimated by soil C[O.sub.2] emissions (Davidson and Janssens, 2006), the [NPP.sub.canopy] that is estimated through litterfall (Girardin et al., 2010), and the lateral exchange of carbon via river discharge ([L.sub.lateral]).
stages F3 and 4 in relation to the gradual increase in autotrophy. The
The GPP:R ratio is a measure of the proportional autotrophy or heterotrophy of a system, with 1.0 being neutrality.
Since autotrophy is thought to play an important role in the subsurface, we focused on this group of Archaea by carrying out incubations with labelled [sup.13]C[O.sub.2].
Beside their 16S rRNA-gene-based phylogenetic placement, uptake of [.sup.14]C bicarbonate (Schiemer et al, 1990) and the presence of RuBisCo enzymatic activity indicate Laxus ectosymbiont autotrophy (Polz et al, 1992).
The type of vegetation cover and rainfall can also determine conditions of autotrophy or heterotrophy in streams, having a strong effect upon the stream food web structure and dynamics, as shown by Uieda and Motta (2007) for some tropical streams.
All CPs are green and able to fix C[O.sub.2] (autotrophy), although the growth of some species (mainly aquatic) is partly dependent on organic carbon uptake from prey (facultative heterotrophy; see Luttge, 1983).
Holz et al., "Plasmid-related anaerobic autotrophy of the novel archaebacterium Sulfolobus ambivalens," Nature, vol.