Fish oils, rich in n-3 PUFA, have become one of the most popular dietary supplements worldwide with millions of regular consumers (1). Sales in the USA alone exceed US$ 1 billion annually (2). There is a broad range of benefits claimed for n-3 fish oils including: prevention of CVD (3) , reduced cognitive decline (4) , and the improved management of inflammatory diseases (arthritis , inflammato...

—Catch-and-release fisheries have become very important in the management of overexploited recreational fish stocks. Tag return studies, where the tag is removed regardless of fish disposition, have been used to assess the effectiveness of restoration efforts for these fisheries. We extend the instantaneous rate formulation of tag return models to allow for catch and release as well as harvest....

Reef fishes that exhibit predictable aggregating behaviour are often considered vulnerable to overexploitation. However, fisher knowledge of this behaviour is often heterogeneous and, coupled with socioeconomic factors that constrain demand for or access to aggregated fish, will influence susceptibility to fishing. At two case study locations in Papua New Guinea, Ahus and Karkar islands, we con...

The main purpose of this paper is two-fold: (i) to generalize an existence result for a compressible gas-liquid model with a friction term recently published by Friis and Evje [SIAM J. Appl. Math., 71 (2011), pp. 2014–2047]; (ii) to derive a uniqueness result for the same model. A main ingredient in the existence part is the observation that we can consider weaker assumptions on the initial liq...

Bottom trawling is one of the most efficient fishing activities, but serious and persistent ecological issues have been observed by fishers, scientists and fishery managers. Although China has applied the Beidou fishing vessel position monitoring system (VMS) to manage trawlers since 2006, little is known regarding the impacts of trawling on the sea bottom environments. In this study, continuou...

There are numerous oil fields that approaching the end of their lifetime and have great geothermal potential considering temperature water cut. On other hand, industry is facing challenges due to increasingly stringent environmental regulations. An example this case France where extraction will be forbidden starting from year 2035. Therefore, some companies switching business investing in proje...