Fishing is widely known to magnify fluctuations in targeted populations. These fluctuations are correlated with population shifts towards young, small, and more quickly maturing individuals. However, the existence and nature of the mechanistic basis for these correlations and their potential ecosystem impacts remain highly uncertain. Here, we elucidate this basis and associated impacts by showi...

We present a stock-effort dynamical model of a fishery subdivided into fishing zones. The stock corresponds to a fish population moving between these zones, on which they are harvested by fishing fleets. We consider a linear chain of identical fishing zones. Fish movements between the zones, as well as vessels displacements, are assumed to take place at a faster time scale than the variation of...

Boat lubricants are continuously released into the marine environment and thereby cause chronic oil pollution. This study aims to isolate lubricant-degrading microorganisms from Thai coastal areas as well as to apply a selected strain for removal of boat lubricants. Ten microorganisms in the genera of Gordonia, Microbacterium, Acinetobacter, Pseudomonas, Brucella, Enterococcus and Candida were ...

The study of fisheries-induced evolution is a research field which is becoming recognized both as an important and interesting problem in applied evolution, as well as a practical management problem in fisheries. Much of the research in fisheries-induced evolution has focussed on quantifying and proving that an evolutionary response has taken place, but less effort has been invested on the actu...

No profile of events can capture all the facts, the chaos, and the many thousands of pages devoted to what the Gulf of Mexico oil blowout was—and was not. During several visits to the Gulf region in 2010 and in the months I spent writing a book on the subject, the best way I found to make sense of the blowout’s many facets was as conceptual topography, its contours shaped by the interlaced fact...

Effects of age at first capture (tc) and fishing (F) as well as natural mortalities (M) on yield and biomass-per-recruit of tiger tooth croacker, Otolithes ruber were evaluated in the northwest of the Persian Gulf using the Beverton-Holt model. The yield-per-recruit (Y/R) was 175 (g/r), which was less than maximum yield-per-recruit value (217 (g/r)) at fishing mortality of 1 year-1. Current ...

Biofuels are made from vegetable oils and animal fats, which have great potential as an alternative to traditional fuels reduce environmental pollution. In addition functioning oxygen booster for combustion, biofuels renewable. Moreover, another advantageous characteristic of is the ease mixing them with fuel, without any need complicated equipment. However, there many factors affecting applica...

Sport fishing is an activity responsible for moving millions of dollars around the world. However, this activity is also considered to cause habitat degradation and promoting several negative effects on the ichthyofauna. The “Iguaçu Dourado” project, presented here, seeks to intensify the potential of sport fishing in the Iguaç u River Basin. Although not explicit, the project intends to introd...

This paper models fishing trawler scheduling for integrated fisheries. Fishing trawler scheduling is a well known problem in the fishery industry. The scheduling problems faced by the fishery industry are more complicated than the traditional merchant trawler scheduling problems. The factors that influence the scheduling of fishing trawlers include catch capacity, processing capacity, etc. We d...