ocean fishery Articles
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Infographic: Why even landlubbers need healthy oceans
Oceans around the world face a fierce array of threats: plastic pollution, overfishing, acidification, climate change and more. The infographic above from the World Bank highlights the importance of oceans to the health of the planet and economies around the world. For example, coastal habitats store five times more carbon than do tropical forests, and 90 percent of the people whose livelihood ...
By Ensia
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Moving Up the Food Chain
For most of the time that human beings have walked the earth, we lived as hunter-gatherers. The share of the human diet that came from hunting versus gathering varied with geographic location, hunting skills, and the season of the year. During the northern hemisphere winter, for instance, when there was little food to gather, people there depended heavily on hunting for survival. Our long history ...
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Taxpayer dollars subsidizing destruction
One way to correct market failures is tax shifting—raising taxes on activities that harm the environment so that their prices begin to reflect their true cost and offsetting this with a reduction in income taxes. A complimentary way to achieve this goal is subsidy shifting. Each year the world's taxpayers provide at least $700 billion in subsidies for environmentally destructive activities, such ...
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Expanding marine protected areas to restore fisheries
After World War II, accelerating population growth and steadily rising incomes drove the demand for seafood upward at a record pace. At the same time, advances in fishing technologies, including huge refrigerated processing ships that enabled trawlers to exploit distant oceans, enabled fishers to respond to the growing world demand. In response, the oceanic fish catch climbed from 19 million tons ...
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Metal and selenium concentrations in blood and feathers of petrels of the genus Procellaria
Concentrations of copper (Cu), zinc (Zn), cadmium (Cd), lead (Pb), mercury (Hg) and selenium (Se) were determined in blood and feathers of spectacled (Procellaria conspicillata) and white‐chinned (P. aequinoctialis) petrels, species that are phylogenetically related, but with distinct ecological niches. In winter, they feed on similar foods, indicated by an overlapping range of whole‐blood ...
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Haven or Hazard: The Ecology and Future of the Salton Sea
The Salton Sea, the largest inland body of water in the state of California, lies 35 miles north of the U.S.-Mexico border in one of the most arid regions in North America. With a surface elevation approximately 227 feet below that of the ocean, the Salton Sea is a study in contrasts: it is an agricultural drainage repository that provides vital habitat for more than 380 species of birds, a ...
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Our global Ponzi economy
Our mismanaged world economy today has many of the characteristics of a Ponzi scheme. A Ponzi scheme takes payments from a broad base of investors and uses these to pay off returns. It creates the illusion that it is providing a highly attractive rate of return on investment as a result of savvy investment decisions when in fact these irresistibly high earnings are in part the result of consuming ...
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Learning from past civilizations
To understand our current environmental dilemma, it helps to look at earlier civilizations that also got into environmental trouble. Our early twenty-first century civilization is not the first to face the prospect of environmentally induced economic decline. The question is how we will respond. As Jared Diamond points out in his book Collapse, some of the early societies that were in ...
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Full Planet, Empty Plates: Chapter 2. The Ecology of Population Growth
Throughout most of human existence, population growth has been so slow as to be imperceptible within a single generation. Reaching a global population of 1 billion in 1804 required the entire time since modern humans appeared on the scene. To add the second billion, it took until 1927, just over a century. Thirty-three years later, in 1960, world population reached 3 billion. Then the pace sped ...
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Nets That Save Fish - Ocean bycatch isn’t inevitable — it’s a design challenge.
Six years ago, the Norwegian coast guard filmed a Scottish fishing vessel riding gray swells, dumping 5 metric tons of dead fish back into the North Sea. Over the European Union catch quota, and so unable to keep all the fish they’d caught, the fishermen had to ditch some. To the Norwegians, who aren’t part of the EU and hold a strict discards ban, the waste was shocking. When this ...
By Ensia
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How to limit waste and control quality in aquafeed production
According to Science Daily, aquaculture is the world’s fastest growing food sector. As of 2014, over 50% of the human fish food supply is produced in an aquaculture environment. A growing dependence on aquaculture entails the necessity for aquafeed that can sustain such growth in a responsible matter but also meets the nutritional requirements of this demanding production process. As ...
By BESTMIX
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Rising Meat Consumption Takes Big Bite out of Grain Harvest
http://www.earth-policy.org/data_highlights/2011/highlights22 World consumption of animal protein is everywhere on the rise. Meat consumption increased from 44 million tons in 1950 to 284 million tons in 2009, more than doubling annual consumption per person to over 90 pounds. The rise in consumption of milk and eggs is equally dramatic. Wherever incomes rise, so does meat consumption. As the ...
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Ghana Fish Feed Production Machine And Fish Farming Market
The growing global and national demand for fish and the dwindling supply of the Ghanaian economy is another reason for the development of aquaculture. In Ghana, more and more people are shunning red meat as a source of protein and turning to fish because of the health effects. Fish feed pellet machine can make fish feed pellets, Zhengzhou Fusmar Machinery is a professional fish feed extruder ...
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Plan B 3.0 -- A Plan of Hope
Plan B is shaped by what is needed to save civilization, not by what may currently be considered politically feasible. Plan B does not fit within a particular discipline, sector, or set of assumptions. Implementing Plan B means undertaking several actions simultaneously, including eradicating poverty, stabilizing population, and restoring the earth’s natural systems. It also involves cutting ...
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How Much Will it Cost to Save Our Economy’s Foundation?
During the past two summers, Pakistan was hit with catastrophic floods. The record flooding in the late summer of 2010 was the most devastating natural disaster in Pakistan’s history. The media coverage reported torrential rains as the cause, but there is much more to the story. When Pakistan was created in 1947, some 30 percent of the landscape was covered by forests. Now it is 4 percent. ...
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Chile Mandates Real-time Environmental Monitoring at Salmon Farms
Ocean-based fish farms in Chile have been ordered by Chilean officials to start monitoring environmental conditions in and around their pens in real time and immediately transmit the data to government environmental agencies. According to the August regulation from the Superintendencia de Medioambiente (SMA), ocean-based aquaculture sites will need to monitor water conditions for dissolved ...
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Preserving our Oceans with Fish Recovery Systems
The power industry relies heavily on water to generate electricity. With significant volumes required for processes such as cooling and steam generation, water intake systems need to be sustainable. This means that they need to be energy efficient and preserve marine life. As a leading global supplier of innovative high-efficiency water treatment solutions, Ovivo provides screening ...
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Transgenic fish are ready for us. Are we ready for them?
After decades of regulatory and legal challenges, AquaBounty aims to bring genetically engineered salmon to U.S. and Canadian markets next year. On a hill above the cold waters around Prince Edward Island, technicians painstakingly create fertilized Atlantic salmon eggs that include growth-enhancing DNA from two other fish species. The eggs will be shipped to ponds in the high rainforest of ...
By Ensia
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