fishery catch Articles
-
Alternative futures for Southern Bluefin Tuna
This paper examines the outcomes of alternative management scenarios for the Southern Bluefin Tuna (SBT) fishery over the next 30 years. Two criteria are used to characterise outcomes: economic efficiency as measured by the present value of net benefits generated and conservation as measured by the predicted size of the spawning stock biomass in 20 years' time (SSB20). A bioeconomic model, ...
-
Open access in a spatially delineated artisanal fishery: the case of Minahasa, Indonesia
The effects of economic development on the exploitation of renewable resources are investigated in settings where property rights are ill defined or not enforced. This paper explores potential conservation implications from labor and product market developments, such as enhanced transportation infrastructure. A model is developed hat predicts individual fish catch per unit effort based on ...
-
Fishing Time at LDAR
The pond at LDARtools is an employee favorite. There have been 6 types of fish caught. Check out the photos! On occasion, you may find Rex and Valerie’s grandson, Hollis, taking a break from his busy day to catch a fish and enjoy the sunshine and cool breeze. Amazingly, we never didn’t stock most of these species!. We just dug a deep hole, drove our pickup trucks around inside of ...
By LDARtools
-
Bioaccumulation of contaminants in recreational and forage fish in Newport Bay, California in 2000-2002
Untitled Document Newport Bay is an important southern California estuary that is both a developed marina in its lower bay and an ecological reserve in the upper bay. Recreational anglers catch fish for consumption, particularly in the lower bay, and threatened bird species consume small forage fish in the upper bay. Although the ecology of the fish community has been ...
-
Assessing the roles of environmental factors in coastal fish production in the northern Baltic Sea: A Bayesian network application
Environmental conditions play a crucial role in the distribution and abundance of fish species in any area. Much research has been attributed to the requirements and tolerance limits of commercially exploited fish species. It is rare, however, that studies have been able to address the relative importance of potentially restrictive environmental factors; extensive enough to allow for estimation ...
-
Nature and humans, together again
Humans have been “framed out of the picture” when it comes to documenting nature, says Conservation International executive vice president and senior scientist M. Sanjayan in the opening of a new series, “EARTH A New Wild,” which premiers Feb. 4 on PBS. Sanjayan and producer David Allen — “probably the finest natural history filmmaker out there today,” ...
By Ensia
-
Project - Artificial Reefs
In collaboration with local fishermen, we are installing a network of simple, low cost artificial reefs to act as alternative fishing grounds, relieving pressure of over-fished reefs Our first artificial reef project was launched in October 2016 in the Bay of Ranobe. We install simple, affordable, and replicable artificial reefs on degraded patch reefs across the Bay of Ranobe to act as ...
-
Green Lens Applications for Night Fishing
Green lights are useful for attracting large fish at night. Anglers have relied on the practice for decades; and the technique is steadily becoming more effective with the proliferation of new, robust lighting technology. Benefits of Green Lens Applications There are two major factors at work when using green light to attract large fish: light and perception. With a short wavelength ...
-
The effects of surface water abstraction for rice irrigation on floodplain fish production in Bangladesh
Abstraction of surface water for irrigation poses a serious threat to the sustainability of floodplain fisheries in Bangladesh. Previous fisheries research has accorded a central role to dry-season (Rabi) water maintenance in safeguarding the health of the fishery, but rice irrigation water abstraction dries up water bodies at a rapid rate. Having reviewed various aspects of this water ...
-
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 ...
-
Can Fish be Happy?
The sixth installment in the series “Happy Fish - How Aquaculture Operators are Growing Better Fish.” A curious question that we have been asking is a concept that we’re thinking about in regards to fish – can fish be happy or show signs of happiness? Both RAS systems and Net Pen operations aim to raise the best and highest quality fish to fetch the greatest market value. ...
-
Why land rights should be on the Rio+20 agenda
As government leaders prepare for next month’s UN Conference on Sustainable Development (Rio+20) in Brazil, one issue is conspicuously absent from the agenda: land rights. Strong property rights—the rights for people to access, control, transfer, and exclude others from land and natural resources—create incentives to invest in sound land management and help protect land from ...
-
What Are the Common Habits of Silver Arowana?
The Silver Arowana (Scientific Name: Osteoglossum bicirrhosum) is relatively large in size, strong in body, fast in growth rate, and large in food intake. They like to live in weakly acidic or neutral soft water. The best living water temperature is between 24℃ - 28℃. They like to eat animal bait. Studies have found that Silver Arowanas are docile and have the strongest fertility among ...
-
The Role of Mangroves in Fisheries Enhancement
In 2011 humans caught and consumed 78.9 million tonnes of fish, crustaceans, molluscs and other species groups from the world’s oceans, accounting for 16.6% of the world’s animal protein intake (FAO 2012). This is projected to increase further, to over 93 million tonnes by 2030 (World Bank 2013). Global demand for fish products has increased dramatically over recent decades. Fishing ...
-
Mangroves for Coastal Resilience
Coastal wetlands such as mangrove forests strongly contribute to the safety, food security and income of tens of millions of people throughout the tropics. Wetlands International has helped to restore and conserve thousands of hectares of mangrove forests, closely working with coastal communities. We aim to increase coastal resilience and reduce disaster risk by championing and enabling ...
-
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 ...
-
Modern strains put Lake Victoria in critical condition
Pollution and overfishing in Lake Victoria have become so severe that scientists believe they threaten the health and livelihoods of millions of East Africans. And researchers in the three countries bordering the world’s largest tropical lake — Kenya, Tanzania and Uganda — largely blame governments and national agencies for failing to control the effluent and other waste ...
By SciDev.Net
-
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 ...
-
Overfishing Threatens Critical Link in the Food Chain
The fish near the bottom of the aquatic food chain are often overlooked, but they are vital to healthy oceans and estuaries. Collectively known as forage fish, these species—including sardines, anchovies, herrings, and shrimp-like crustaceans called krill—feed on plankton and become food themselves for larger fish, seabirds, and marine mammals. Historically, people have eaten ...
-
The Global Food Challenge Explained in 18 Graphics
The world is projected to hold a whopping 9.6 billion people by 2050. Figuring out how to feed all these people—while also advancing rural development, reducing greenhouse gas emissions, and protecting valuable ecosystems—is one of the greatest challenges of our era. So what’s causing the global food challenge, and how can the world solve it? We begin to answer these questions ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you