Biomass nutrient content

Sarathchandra SU, Perrott KW, Littler RA (1989) Soil microbial biomass influence of simulated temperature changes on size, activity and nutrient content. Soil Biol Biochem 21 987-993... 

Vymazal, J., and Richardson, C.J. (1995) Species composition, biomass, and nutrient content of periphyton in the Florida Everglades. J. Phycol. 31, 343-354. 

Kruskopf M, Flynn KJ (2006) Chlorophyll content and fluorescence responses cannot be used to gauge reliable phytoplankton biomass, nutrient status or growth rate. New Phytol 169 525-537 Larkum AWD, Douglas SE, Raven JA (eds) (2003) Photosynthesis in algae. Kluwer Academic Publishers, Dordrecht, 480 pp... 

Losses from the system due to combustion of biomass can be quite high for carbon, nitrogen, and sulfur, and less for major nutrients like phosphorus, potassium, and calcium (Ewel et al. 1981, Frost and Robertson 1985, Kauffman et al. 1995, Sanchez 1976, Wright and Bailey 1982). However, immediate improvement in the soil chemical characteristics - higher pH, reduced aluminum toxicity, and higher nutrient content— is usually observed after forest cutting and burning in the Amazon basin (Buschbacher 1984, Dantas 1989, Dantas and Matos 1980, Diez et al. 1991, Falesi 1976, Seubert et al. 1977, Smyth and Bastos 1984). 

Mature forest biomass was estimated by Nepstad (1989). Nutrient contents are estimated using average concentrations from other mature Amazonian forests. 

Apart from the production of CPO and palm kernel oU (PKO), the oil palm industry also generates large quantities of by-products in the form of biomass. The bulk of the by-products derived from the palm oil industry are basically Ugnocellulosic and organic in nature and with a high plant nutrient content. With proper handling and management, these by-products could be utilized and converted into value-added products. 

The nutrient ratios vary insignificantly, i.e., 143-165 for C N, 1246-1383 forCiP, and 8.40-8.80 for N P ratio for the total plant biomass. The content of nutrients in leaf tissues is higher and C N and C P ratios are correspondingly smaller. Thus, we should remember that nutrient ratios increase with time as the vegetation species become increasingly dominated by structural tissues with lower concentration of essential species (Schlezinger, 1991). 

Generally, in humus the ratio of C N P S is close to 140 10 1.3 1.3 (Stevenson, 1986). As a result of its high nutrient content, humus plays a role of biogeochemical barrier in soil profile and dominates the storage of biogeochemical species in most ecosystems. For instance, in Temperate Forest ecosystems, the aboveground biomass... 

Jackson, R. B., Mooney, H. A., and Schulze, E.-D. (1997). A global budget for fine root biomass, surface area, and nutrient contents. Proc. Natl. Aaiil. Sci. USA 94, 7362-7366. 

The model parameters for tree growth were primarily derived from Raich et al. (2000) and slightly modified based on plant nutrient content and biomass data from fertilizer experiments in Hawaii (Vitousek et al., 1993 Vitousek and Farrington, 1997 ... 

THE SOIL BIOMASS AS A SOURCE AND SINK OF PLANT NUTRIENTS 6.1 The nutrient content of the soil biomass... 

The biomass is a small but comparatively labile part of the organic fraction in soil, and is important as a source and sink of nutrients. Estimates of the amounts of nutrient involved have been made by measuring the biomass-C in soil by various methods, and then assuming the mineral composition of the biomass to be similar to that of laboratory-grown cells. The nutrient content of such laboratory-grown organisms seems rather high. 

Estimation of the nutrient content of the biomass by the fumigation technique is a more direct method, but still assumes that the flushes of nutrients from the killed biomass behave in a similar way to those from the organisms used to estimate the k-factors. At the time of writing there have been comparatively few estimates using the fumigation technique and the majority of these have been on biomass-N. 

VAN VEEN J. and PAUL E.A. 1979, Conversion of biovolume measurements of soil organisms grown under various moisture tensions, to biomass and their nutrient content. Applied and Environmental Microbiology, 37, 686-692. 

Biomass or mass of living matter, living cells in a liquid solution with essential nutrients at suitable temperature and pH leads to cell growth. As a result, the content of biomass increases with time. 

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