North American Resources and Gas Supply to the State of California

The last decade has been witness to an incredible transformation in the US energy fortune. The combination of hydraulic fracturing and horizontal drilling in upstream operations targeting ultra-low porosity, ultra-low permeability hydrocarbon bearing shale formations has unlocked a bounty of natural gas and crude oil resource. This transformative innovation has literally turned the US energy market on its head. Fewer than ten years ago a number of large capital players were developing liquefied natural gas (LNG) regasification terminals with an eye toward importing large volumes of natural gas to the US from distant locations. Today, there is a prevailing expectation that the US will soon be an exporter of LNG, largely due to the rapid growth in natural gas production from shale that has occurred in the last 8 years (see Figure 1). In fact, US gross natural gas production has risen from an annual average rate of 64.3 billion cubic feet per day (bcfd) in 2005 to 82.7 bcfd in 2013, driven primarily by growth in production from shale from less than 4 bcfd to over 31 bcfd

The diet of the Tasmanian Devil, Sarcophilus harrisii, as determined from analysis of scat and stomach contents

Knowledge of the diets of carnivores is an essential precursor to understanding their role as predators in ecosystems. To date, understanding of the diet of Tasmanian Devils, Sarcophilus harrisii, is limited and based upon largely qualitative descriptions. We examined the diets of Tasmanian Devils at six sites by identifying undigested hair, bone and feathers found in their scats. These sites range across different habitat types in coastal and inland Tasmania, and encompass devil populations that are known as both free of the Devil Facial Tumour Disease (DFTD) and populations that are infected by the disease. Tasmanian Devil scats at coastal sites (n=27) contained ten species of mammal, as well as birds, fish and insects. Scats collected from inland sites (n= 17) were comprised of six mammalian species, birds and invertebrates. The most common food items were birds, Common Brushtail and Ringtail possums (Trichosurus vulpecula and Pseudocheirus peregrinus respectively), Tasmanian Pademelons (Thylogale billardierii) and Bennett's Wallabies (Macropus ruftgriseus). O fall the scats, 61% contained only one food group, 32% contained two groups, 4% contained three food items and only one scat (2%) contained four food groups. We supplement this information with stomach contents from road-killed devils, and compare our results with those of previous studies, with a view to furthering our understanding ofthe ecology ofthe threatened Tasmanian Devil. Such information will be important for the management of wild and captive devil populations, particularly in light of DFTD

Finite to infinite steady state solutions, bifurcations of an integro-differential equation

We consider a bistable integral equation which governs the stationary solutions of a convolution model of solid--solid phase transitions on a circle. We study the bifurcations of the set of the stationary solutions as the diffusion coefficient is varied to examine the transition from an infinite number of steady states to three for the continuum limit of the semi--discretised system. We show how the symmetry of the problem is responsible for the generation and stabilisation of equilibria and comment on the puzzling connection between continuity and stability that exists in this problem