Tramas tróficas en sistemas frontales del Mar Argentino: estructura, dinámica y complejidad analizada mediante isótopos estables.
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Two of the most important frontal systems of the Argentine Sea (SW Atlantic Ocean) were compared to obtain evidences on the regulatory mechanisms of food web length, incorporating both spatial (areas within fronts) and temporal (presence or absence of frontal structure) variability. The stable isotopes of Carbon and Nitrogen were used to evaluate the origin and composition of the organic matter used by primary consumers, the structure of food webs, the trophic levels of several taxa and the benthic-pelagic coupling within each system. In the Río de la Plata estuarine front, different sources of organic matter would support the food webs occurring in the three areas of the system. The particulate organic material (POM) would be the main resource supporting the food web in the mixohaline area, although with different composition between surface and bottom layers. The similarity of the ~d<sup>13</sup>C signature between the fluvial detritus and the surface POM revealed a strong river-estu.....
Other TitleFood webs in frontal systems of the Argentine Sea: structure, dynamics and complexity analyzed through stable isotopes.
PublisherFacultad de Ciencias Exactas y Naturales
Mar del Plata (Argentina)
Spatial CoverageAtlántico Sudoccidental
Río de la Plata