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Resumen del producto
Camalich, J., S., Aguíñiga García, E., Balart Páez & D., Aurioles-Gamboa
(2008).
The use of stables isotopes ?13C and ?15N as tracers of hte source and fate of energy ub a dynamical coastal area located at the temperate tropical transitional zone (BCS, Mexico).
The 6th International Conference on Application of Stable Isotope Techniques of Ecological Studies.
Honolulu, Hawaii, USA, Estados Unidos de América, agosto 25 - 29, 2008,
106.
The use of stables isotopes ?13C and ?15N as tracers of hte source and fate of energy ub a dynamical coastal area located at the temperate tropical transitional zone (BCS, Mexico)
Jaime Camalich, Sergio Aguíñiga García, Eduardo Balart Páez y David Aurioles-Gamboa
Stable isotopes of carbon and nitrogen have been used in ecological studies to determine the source of organic matter and the trophic position of marine organisms (Hobson, 1994; Menard, 2007 and references therein). In addition, stable isotopes combined with stomach content can provide important information about dietary habits and feeding strategies, for example if an organism is a selective or unselective feeder or if it is a pelagic or benthic organism. Recent studies have shown that the stable isotopic signature from the base of the food web can be transferred up through the food web to the top predators (Menard et al., 2007 and references therein). ?15N is a unique natural recorder of the marine nitrogen cycle and nitrogen biogeochemistry and has thus been used as a tracer in the open ocean. Likewise, since uptake of NO3- by phytoplankton produces isotopic fractionation of nitrogen (Figure 2; Waser et al.,1998; Altabet et al., 1999), ?15N has been used to determine nutrient utilization (Altabet & Francois, 1994 a) and indirectly could be used as an indicator of primary production (figure 1)
Palabras clave: isotope carbon nitrogen bcs mexico
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