Trophic structure

Bocherens, H., Fogel, M.L., Tuross, N. and Zeder, M. 1995b Trophic structure and climatic information from isotopic signatures in a Pleistocene cave fauna of southern England. Journal of Archaeological Science 22 237-340. 

Brown SS, Gaston GR, Rakocinski CF, Heard RW. 2000. Effects of sediment contaminants and environmental gradients on macrobenthic community trophic structure in Gulf of Mexico estuaries. Estuaries 23 411M24. 

T. Person, E. Baiith, M. Clarholm, H. Lundkvist, B. E. Soderstrom, and B. Sohlen-ius. Trophic structure, biomass dynamics and carbon metabolism of soil organisms in a Scots pine fore.st. Ecol. Bull. i2 4l9 (1980). 

Parmelee, R.W., R.S. Wentsel, C.T. Phillips, M. Simini, and R.T. Checkai. 1993. Soil microcosm for testing the effects of chemical pollutants on soil fauna communities and trophic structure. Environ. Toxicol. Chem. 12 1477-1486. 

Terrestrial and marine trophic structures. Energy and nutrients pass through the trophic levels when one organism feeds on another. The shaded blocks represent the amount of energy transferred from one trophic level to the next. 

Trophic structure The pattern of feeding relationships in a community of organisms. 

In a trophic structure, what distinguishes a producer from a consumer ... 

The degree of 15N enrichment between particulate organic matter (POM) and consumers can be used to accurately estimate trophic level (47, 49). Thus isotopic studies permit identification of consumer groups that form nutritional guilds via 13C and analyses, while establishing trophic-level interactions within these groups via 15N analyses. To date, very few combined 13C and 15N analyses of trophic structure in freshwater systems have been published (47, 50-52). 

Hairston, N. G., Jr., and N. G. Hairston. 1993. Cause-effect relationships in energy flow, trophic structure, and interspecific interactions. American Naturalist 142 379-411. 

Odum, H. T. 1957. Trophic structure and productivity of Silver Springs, Florida. Ecological Monographs 27 55-112. 

The total estimate of the role of the Arctic Basin ecosystem in the dynamics of oil hydrocarbons can be traced for each Arctic sea. As an example, Figure 6.7 gives such results for the Barents Sea. The discrepancy between simulation results (solid curve 1) and the data of curves 2 and 3 (Terziev, 1992) is explained by the assumption that the trophic structures of different Arctic seas are described by means of the general scheme represented in Figure 6.3 and discrimination between the ecological elements in each Arctic sea is not taken into consideration in the SSMAE. 

An ecosystem, as defined by Odum (1971), includes living organisms interacting with each other and with the abiotic environment. Within the ecosystem, the existence and flow of energy and cycle of materials lead to the development of trophic structures... 

How are terrestrial inputs processed within the lotic environment, and how does this processing support the trophic structure of lotic systems ... 

Wu, J. P., Calvert, S. E., and Wong, C. S. (1997). Nitrogen isotope variations in the subarctic northeast Pacific Relationships to nitrate utilization and trophic structure. Deep Sea Res. Part I-Oceanogr. Res. Pap. 44(2), 287-314. 

---