Slow-fast dynamics of Hopfield spruce-budworm model with memory effects

Entire solutions of the spruce budworm model

Here N is the spruce budworm population density, rB is the linear birth rate of the budworm and KB is the carrying capacity which is related to the density of foliage available on the trees. The P(N)-term represents predation, generally by birds. To be specific, we take the form for P(N) suggested by Ludwig et al., namely BN2 A2+N2 , where A and B are positive constants, and the dynamics of N(t...

Western Spruce Budworm Outbreak History

Western spruce budworm (Choristoneura occidentalis Freeman) outbreak history was reconstructed for the Sacramento Mountains of south -central New Mexico, at the southern limit of the species distribution range. Six host tree -ring width chronologies (Douglas -fir and white fir) and three non -host control chronologies (ponderosa pine) were used for this reconstruction spanning from 1800 to 1990...

Slow-fast Dynamics in Wonderland

Fast and Slow, Adiabatic and Geometric Effects in Nonequilibrium Dynamics

s of the talks on “Fast and slow, adiabatic and geometric effects in nonequilibrium dynamics”, January 26, 2011 Yosi Avron (Häıfa): Geometry of quantum transport of open quan-

Spruce budworm antifreeze protein: changes in structure and dynamics at low temperature.

Antifreeze proteins (AFPs) prevent the growth of ice, and are used by some organisms that live in sub-zero environments for protection against freezing. All AFPs are thought to function by an adsorption inhibition process. In order to elucidate the ice-binding mechanism, the structures of several AFPs have been determined, and have been shown to consist of different folds. Recently, the first s...