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Nutrient limitation organism

Smith, S. V., Kimmerer, W. J., and Walsh, T. W. (1986). Vertical flux and biogeochemical turnover regulate nutrient limitation of net organic production in the North Pacific Gyre. Limnol. Oceanogr. 31, 161-167. [Pg.376]

Oligotroph an organism with optimal growth in nutrient-limited conditions. [Pg.276]

Station ALOHA (see Figure 23.4 for location information). Three-point running mean observations of N/P molar ratios in (a) total dissolved inorganic plus organic pool, (b) total suspended particulate matter in the upper 0-100 m, (c) in exported particulate matter at 150 m depth, and (d) cycling in nutrient limitation (described in text). Source From Karl, D. M. (2002). Trends in Microbiology 10(9), 410-418. [Pg.689]

In many wetlands NPP and decomposition are most limited by the availability of nutrients, especially N and P. For example, in a review of published data on nutrient limitations in North American bogs, fens, marshes and swamps, Bedford et al. (1999) found that a large proportion of the wetlands were either P limited or limited by both N and P, especially those occurring on organic soils. Only marshes had N P ratios in both live tissues and soils that consistently indicated N limitation, though the soil data suggested that the majority of swamps were also... [Pg.150]

The formula for BCD in Eq. (2) was derived under the assumption that the bacterial growth rate was mineral nutrient limited. If the supply rate of labile organic carbon from allochthonous and autochthonous sources is insufficient to meet this demand, the pool of labile dissolved organic carbon (DOC) will eventually be depleted and the bacteria will become carbon... [Pg.385]

Values of q >1 thus correspond to steady states with carbon-limited bacterial growth rate, whereas values of q <1 correspond to mineral nutrient limitation. Equation (3) illustrates how everything depends on everything in a steady-state situation. The value of q is a function not only of the ratio between production rate of organic bacterial substrates and the product of loss rates of the bacterial predators and competitors to higher predators, but also of all the parameters representing physiological properties of bacteria, bacterial competitors, and bacterial predators. [Pg.386]

In the preceding discussions, we assumed labile DOC and DON to be produced at rates y/c and y/N, respectively, without discussing their sources and how the production rate and the composition of the produced material would be expected to vary with food web structure. The important differences among different models can be illustrated by some examples. One potential model is that DOC production is an overflow mechanism occurring in mineral-nutrient-limited phytoplankton not able to use the photo-synthetically produced organic carbon for biomass production due to lack... [Pg.392]

Polyhedra bioactivity can be compromised due to nutrient limitations, causing abnormalities in virion development and occlusion within polyhedra (Rollinson et al., 1965 Slavicek et al., 1995 Belloncik et al., 1997). The most important aspects of culture medium selection are pH, osmolar-ity, and organic salt components. Components such as amino acids, vitamins, and carbon source (glucose for example), are typically found in the basal culture medium formulation. However, these simple formulations cannot promote cell growth themselves, unless supplemented with animal serum, normally 5-20% (v/v) fetal bovine serum (FBS) (Schlaeger, 1996). [Pg.464]


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Nutrient limited

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