|
Payaos
A payaos is a type of fish aggregating device used in Southeast Asia, particularly in the Philippines. Payaos were traditionally bamboo rafts for handline fishing before World War II, but modern steel payaos use fish lights and fish location sonar to increase yields. While payaos fishing is sustainable on a small scale, the large scale, modern applications have been linked to adverse impacts on fish stocks. Traditional payaos A traditional payaos is a simply constructed bamboo raft with a superstructure at or just below the waterline, most commonly constructed of palm fronds. Using hand-line fishing, fishermen take advantage of pelagic fish's attraction to floating objects. Large tuna can be caught in this manner at depths of under 300 meters, far shallower than by contemporary methods like purse seining. Wesley A. Armstrong and Charles W. Oliver, "Recent Use of Fish Aggregating Devices in the Eastern Tropical Pacific Tuna Purse-Seine Fishery: 1990-1994," Southwest Fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Aggregating Device
A fish aggregating (or aggregation) device (FAD) is a man-made object used to attract ocean-going pelagic fish such as marlin, tuna and mahi-mahi (dolphin fish). They usually consist of buoys or floats tethered to the ocean floor with concrete blocks. FADs attract fish for numerous reasons that vary by species. Fish tend to move around FADs in varying orbits, rather than remaining stationary below the buoys. Both recreational and commercial fisheries use FADs. Before FADs, commercial tuna fishing used purse seining to target surface-visible aggregations of birds and dolphins, which were a reliable signal of the presence of tuna schools below. The demand for dolphin-safe tuna was a driving force for FADs.Armstrong WA and Oliver CW (1996Recent use of fish aggregation devices in the eastern tropical Pacific tuna purse-seine fishery: 1990-1994Administrative report LJ-96-02, Southwest Fisheries Science Center, NOAA. In the past, people in the Pacific islands used bamboo rafts to make ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seine Fishing
Seine fishing (or seine-haul fishing; ) is a method of fishing that employs a surrounding net, called a seine, that hangs vertically in the water with its bottom edge held down by weights and its top edge buoyed by floats. Seine nets can be deployed from the shore as a beach seine, or from a boat. Boats deploying seine nets are known as seiners. Two main types of seine net are deployed from seiners: ''purse seines'' and ''Danish seines''. A seine differs from a gillnet, in that a seine encloses fish, where a gillnet directly snares fish. Etymology The word ''seine'' has its origins in the Old English ''segne'', which entered the language via Latin ''sagena'', from the original Greek σαγήνη ''sagēnē'' (a drag-net). History Seines have been used widely in the past, including by Stone Age societies. For example, the Māori used large canoes to deploy seine nets which could be over a kilometer long. The nets were woven from green flax, with stone weights and light wood o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artificial Reef
An artificial reef is a human-created underwater structure, typically built to promote marine life in areas with a generally featureless bottom, to control erosion, block ship passage, block the use of trawling nets, or improve surfing. Many reefs are built using objects that were built for other purposes, such as by sinking oil rigs (through the Rigs-to-Reefs program), scuttling ships, or by deploying rubble or construction debris. Other artificial reefs are purpose-built (e.g. the reef balls) from PVC or concrete. Shipwrecks may become artificial reefs when preserved on the seafloor. Regardless of construction method, artificial reefs generally provide hard surfaces where algae and invertebrates such as barnacles, corals, and oysters attach; the accumulation of attached marine life in turn provides intricate structures and food for assemblages of fish. History The construction of artificial reefs began in ancient times. Persians blocked the mouth of the Tigris River to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquaculture
Aquaculture (less commonly spelled aquiculture), also known as aquafarming, is the controlled cultivation ("farming") of aquatic organisms such as fish, crustaceans, mollusks, algae and other organisms of value such as aquatic plants (e.g. lotus). Aquaculture involves cultivating freshwater, brackish water and saltwater populations under controlled or semi-natural conditions, and can be contrasted with commercial fishing, which is the harvesting of wild fish. Mariculture, commonly known as marine farming, refers specifically to aquaculture practiced in seawater habitats and lagoons, opposed to in freshwater aquaculture. Pisciculture is a type of aquaculture that consists of fish farming to obtain fish products as food. Aquaculture can also be defined as the breeding, growing, and harvesting of fish and other aquatic plants, also known as farming in water. It is an environmental source of food and commercial product which help to improve healthier habitats and used to recon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Lane
A sea lane, sea road or shipping lane is a regularly used navigable route for large water vessels (ships) on wide waterways such as oceans and large lakes, and is preferably safe, direct and economic. During the Age of Sail, they were determined by the distribution of land masses but also by the prevailing winds, whose discovery was crucial for the success of long maritime voyages. Sea lanes are very important for seaborne trade. History The establishment of the North Atlantic sea lanes was inspired by the sinking of the US mail steamer SS ''Arctic'' by collision with the French steamer SS ''Vesta'' in October 1854 which resulted in the loss of over 300 lives. Lieutenant M. F. Maury of the US Navy first published a section titled "Steam Lanes Across the Atlantic" in his 1855 ''Sailing Directions'' proposing sea lanes along the 42 degree latitude. A number of international conferences and committees were held in 1866, 1872, 1887, 1889, and 1891 all of which left the desig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceania
Oceania (, , ) is a region, geographical region that includes Australasia, Melanesia, Micronesia, and Polynesia. Spanning the Eastern Hemisphere, Eastern and Western Hemisphere, Western hemispheres, Oceania is estimated to have a land area of and a population of around 44.5 million as of 2021. When compared with (and sometimes described as being one of) the continents, the region of Oceania is the smallest in land area and the list of continents and continental subregions by population, second least populated after Antarctica. Its major population centres are Sydney, Melbourne, Brisbane, Perth, Auckland, Adelaide, Honolulu, and Christchurch. Oceania has a diverse mix of economies from the developed country, highly developed and globally competitive market economy, financial markets of Australia, French Polynesia, Hawaii, Hawaii, New Caledonia, and New Zealand, which rank high in quality of life and Human Development Index, to the much least developed countries, less developed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moro Gulf
The Moro Gulf is the largest gulf in the Philippines. It is located off the coast of Mindanao Island, and is part of the Celebes Sea. The gulf is one of the country's tuna fishing grounds. Geography The gulf stretches between and is surrounded by the main section of Mindanao on the east, and the Zamboanga Peninsula of Mindanao on the west. The peninsula's major drainage goes towards the gulf. Sibuguey Bay and Illana Bay are its major bays. Zamboanga City, which is an international port, is bound by the Gulf and Celebes Sea in the East. Cotabato City, on the eastern coast, is another major port. Earthquakes The Moro Gulf is also an area of significant tectonic activity with several fault zones in the region capable of producing major earthquakes and destructive local tsunamis, such as the devastating 1976 Moro Gulf earthquake which killed over 5,000 people and left over 90,000 people homeless as it hit the west coast of Mindanao. See also * Celebes Sea The Celebes Se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meikai University
is a private university in Urayasu, Chiba, Japan. History The university was founded in 1970, and obtained its present name in 1988. Programs The university's School of Dentistry is located in Sakado, Saitama is a List of cities in Japan, city in Saitama Prefecture, Japan. , the city had an estimated population of 100,612 in 46,735 households and a population density of 2500 persons per km². The total area of the city is . Geography Sakado is locat .... References External links * Sakado Campus website Educational institutions established in 1988 Private universities and colleges in Japan Universities and colleges in Chiba Prefecture Universities and colleges in Saitama Prefecture Urayasu, Chiba 1988 establishments in Japan {{chiba-university-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gillnet
Gillnetting is a fishing method that uses gillnets: vertical panels of netting that hang from a line with regularly spaced floaters that hold the line on the surface of the water. The floats are sometimes called "corks" and the line with corks is generally referred to as a "cork line." The line along the bottom of the panels is generally weighted. Traditionally this line has been weighted with lead and may be referred to as "lead line." A gillnet is normally set in a straight line. Gillnets can be characterized by mesh size, as well as colour and type of filament from which they are made. Fish may be caught by gillnets in three ways: # Wedged – held by the mesh around the body. # Gilled – held by mesh slipping behind the opercula. # Tangled – held by teeth, spines, maxillaries, or other protrusions without the body penetrating the mesh. Most often fish are gilled. A fish swims into a net and passes only part way through the mesh. When it struggles to free ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pump Boat
A pump boat (usually variation as ''pambot'' in local languages) is an outrigger canoe (') powered by a small gasoline or diesel engine. Smaller pump boats might be powered by the sort of small single-cylinder engine used to drive a water pump. Larger ones are often powered by recycled automobile engines. Pump boats are a utility boat in the Philippines, used for nearly everything from inter-island transportation to fishing and even the Philippine Coast Guard. Pump boats are also used by Sama-Bajau migrants and refugees in Sabah, Malaysia and eastern Indonesia (where it is known as ''pombot''). See also * Paraw * Basnigan * Lepa (ship) * Balangay * Traditional fishing boat * List of boat types This is a list of boat types. For sailing ships, see: List of sailing boat types. A * Airboat * Ark * Auxiliary ship Top of page B * Banana boat (merchant) * Banana boat (recreational) * Barge * Bass boat * Boita * Bow rider * Bracer ... References Canoes Water tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Environmentally Friendly
Environment friendly processes, or environmental-friendly processes (also referred to as eco-friendly, nature-friendly, and green), are sustainability and marketing terms referring to goods and services, laws, guidelines and policies that claim reduced, minimal, or no harm upon ecosystems or the environment. Companies use these ambiguous terms to promote goods and services, sometimes with additional, more specific certifications, such as ecolabels. Their overuse can be referred to as greenwashing.Greenwashing Fact Sheet. 22 March 2001. Retrieved 14 November 2009. frocorpwatch.org/ref> To ensure the successful meeting of Sustainable Development Goals (SDGs) companies are advised to employ environmental friendly processes in their production. Specifically, Sustainable Development Goal 12 measures 11 targets and 13 indicators "to ensure sustainable consumption and production patterns". The International Organization for Standardization has developed ISO 14020 and ISO 14024 to es ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davao Gulf
Davao Gulf is a gulf situated in the southeastern portion of Mindanao in the Philippines. It has an area of or about 520,000 hectares. Davao Gulf cuts into the island of Mindanao from the Philippine Sea. It is surrounded by all five provinces in the Davao Region. The largest island in the gulf is Samal Island. Davao City, on the gulf's west coast, is the largest and busiest port on the gulf. The Bagobo and the Kaagan / Kalagan, who are the indigenous lumad tribes endemic in Davao, are known inhabitants of the said gulf. Wildlife The gulf water is regarded as one of the most diverse cetacean habitats in the nation, being home for at least 10 species of toothed whales and dolphins such as sperm whales and beaked whales. Also whale sharks and sea cows are seen frequently. Furthermore, several ecological phenomena have been observed in the Davao Gulf such as a previously unknown predator of the crown-of-thorns starfish The crown-of-thorns starfish (frequently abbreviated to COTS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpeg "Click for more on -> Seine Fishing")
.jpg "Click for more on -> Gillnet")
