Associate Professor Dr. Amit Tandon attended his first International Council for the Exploration of the Sea (ICES) Annual Science Conference which was held in Halifax, Canada Sept. 22-26th, 2008. Dr. Tandon presented a paper in collaboration with Dr. Brian Rothschild and Jason Olejarz on "Variability of linear non-local spectral ecosystem model due to nutrient donor-nutrient acceptor interaction characteristics."
In this work, they examined how the nutrient donor and acceptor interaction govern the efficiency of the ecosystem. Following earlier size based models they presented a minimal model which will allows a study the difference in efficiency of two models which only differ in the size-dependent predator-prey interaction characteristics. They presented a hierarchy of simple spectral biomass energy models starting with local interactions, and leading up to a new non-local but linear spectral ecosystem model. They showed that predator-prey interaction characteristics make the ecosystem more efficient. These interactions also introduce a time variability, particularly when the size-spectra of
an ecosystem gets perturbed. A local perturbation at very small sizes is shown to introduce variability at larger sizes.
Author: "Dr. Amit Tandon"
Submitted by: Olivia Farinha
Department: College Of Engineering - Phy