The impact of chemical additives on microbiological activity was studied by analysis of the samples every 30 days in order to detect the quantities of aerobic heterotrophs
Samples were analyzed for total coliforms, faecal coliforms, enterococci, and heterotrophs
by the membrane filtration method.
Results for coliform and heterotroph
bacterial analysis in bottles and open containers were compared by using the Fisher exact test (Sigma Stat for Windows 2.
A secondary objective was to determine whether the use of ionization with lower levels of chlorine would adequately control other bacteria, such as heterotrophs
Some predictions of this hypothesis include: (1) Rates of heterotroph
respiration should be uncoupled from rates of phytoplankton production; (2) plankton community respiration should not be bound by net phytoplankton production; and (3) A/H should be positively related to the ratio of phytoplankton production to plankton respiration (P/R ratio).
Do different heterotrophs
consume different compounds?
The chemosynthetic production may be a significant source of nutrition to heterotrophs
found there in an otherwise nutrient-poor deep ocean, (Carney 1994, Pequegnat 1983).
TSR is a general definition for many important processes including respiration by live roots and associated mycorrhizae as well as by soil heterotroph
, and chemical oxidation of plant detritus such as roots, leaves, woody inputs, root exudates, and humified organic matter.
By doing this with glucose and dissolved carbon dioxide, both labeled with heavy carbon, I can distinguish whether each of the lipids I found was made by a heterotroph
or an autotroph.
To test the resistance of the experimental ecosystems to invasion, another measure of stability, 10 cells of Euplotes sp, a facultative heterotroph
containing endosymbiotic algae, were introduced and population growth was measured after two weeks (10-15 generations of Euplotes).
The closest relatives (97% sequence similarity) to WH2K included a marine heterotroph
, Hoeflea marina LMG 128 (11), and several recently characterized epibionts associated with dinoflagellates (e.
The organism Desulfobacter hydrogenophilus can operate as either an oxidative heterotroph
, requiring organic substrates, or a reductive autotroph (Moller et al.