Biomass belowground

Table II. The Effect of Tillage and Rye Residue (Above- and Belowground) on Weed Biomass and Density Averaged Across Three Cropping Systems at Clayton, NC, in 1982 and 1983a...

Valiela, I., and Teal, J.M. (1976) production and dynamics of experimentally enriched salt marsh vegetation belowground biomass. Limnol. Oceanogr. 21, 245-252. 

The differences in amounts and distribution of total biomass reinforce the hypothesis of nutrient availability, especially P, being the overriding determinant for biomass development. Forests with similar amounts of aboveground biomass can differ up to 100 Mg ha"i in total biomass when the belowground component is also measured (Table 4.2). The biomass contribution of roots can vary between 9 to 20% in those forests. Root/shoot ratios can range between 6 and 33, suggesting that belowground biomass may be allocated to increase nutrient and/or water uptake. 

Table 4.2 Belowground and aboveground biomass, percent contribution of belowground and root/shoot ratios in terra firme forests.

In the toposequence of San Carlos de Rio Negro, Tiessen et al. (1994b) indeed found that distributions of carbon, nitrogen, and phosphorus of total plant biomass (above- plus belowground, Medina and Cuevas 1989) follow those of soil C, N,... 

Table 4.3 Comparison of nitrogen and available phosphorus in the soil and total biomass (aboveplus belowground) for three slope positions in a toposequence in San Carlos de Rio Negro.

The biomass estimates in Table 11.6 represent total biomass (above- and belowground, living and nonliving, including palms and nontree components) for unlogged forests... 

Lg was estimate from aboveground biomass for "campina" (bana), for San Carlos do Rio Negro in Venezuela (Kauffman et al., 1988) and belowground biomass of "campina" near Manaus (Klinge, 1976). 

Benner, R., Fogel, M. L., and Sprague, E. K. (1991). Diagenesis of belowground biomass of Sprtina altemiflora in salt-marsh sediments. Limnol. Oceanogr. 36(7), 1358-1374. 

Nitrogen enrichment changes specific morphologic characteristics as well as the allocation of plant biomass to aboveground and belowground tissues. Many studies report increases in leaf length and width, and shoot height and biomass in response to... 

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