Radionuclides in deep-sea fish and other
... doses from internal and external radioactive sources of anthropogenic and naturally occurring radionuclides indicates that most of the radiation dose is usually the result of naturally occurring radionuclides (Carvalho and Oliveira, 2008). Much less information is available about radioactivity in th ...
... doses from internal and external radioactive sources of anthropogenic and naturally occurring radionuclides indicates that most of the radiation dose is usually the result of naturally occurring radionuclides (Carvalho and Oliveira, 2008). Much less information is available about radioactivity in th ...
Fish stock assessments and predictions: integrating relevant
... account of environmental effects was a serious source of assessment error in all areas. For many stocks, lack of information about environmental conditions, or lack of use of relationships between stock parameters (variables) and environmental conditions, is also a main factor limiting the time hori ...
... account of environmental effects was a serious source of assessment error in all areas. For many stocks, lack of information about environmental conditions, or lack of use of relationships between stock parameters (variables) and environmental conditions, is also a main factor limiting the time hori ...
Marine Ecology Progress Series 501:53
... Deep-sea food webs share common features such as long food chains, a broad trophic spectrum, different trophic relationships along depth gradients and seasonal variations (Iken et al. 2005, Jeffreys et al. 2009, Fanelli et al. 2011). Deep-sea communities are closely influenced by resource availabili ...
... Deep-sea food webs share common features such as long food chains, a broad trophic spectrum, different trophic relationships along depth gradients and seasonal variations (Iken et al. 2005, Jeffreys et al. 2009, Fanelli et al. 2011). Deep-sea communities are closely influenced by resource availabili ...
PICES XV S6-3079 Oral A sardine growth model coupled with the
... competition for zooplankton prey between saury and sardine in the Northwestern Pacific, and NEMURO.FISH was applied to Japanese sardine as a first step toward examining competition between these two species. Most of the biological parameters for Japanese sardine were determined from previous publish ...
... competition for zooplankton prey between saury and sardine in the Northwestern Pacific, and NEMURO.FISH was applied to Japanese sardine as a first step toward examining competition between these two species. Most of the biological parameters for Japanese sardine were determined from previous publish ...
On November 29 - the National Sea Grant Library
... Yet how does the tubeworm acquire the bacteria it needs for survival? Scientists have discovered that during its early life stages, the tubeworm has a mouth and gut for bacteria to enter. But as the worm rapidly grows, these features disappear! After riding the ocean currents for up to a month and s ...
... Yet how does the tubeworm acquire the bacteria it needs for survival? Scientists have discovered that during its early life stages, the tubeworm has a mouth and gut for bacteria to enter. But as the worm rapidly grows, these features disappear! After riding the ocean currents for up to a month and s ...
chapter 3 - McGraw Hill Higher Education
... sediment behind them and erosion due to wave action (see fig. 4.6). - The surface area and distribution of continental shelves has varied in the past as a result of global changes in sea level produced by large scale melting and freezing of ice sheets. - The steep slope extending to the ocean basin ...
... sediment behind them and erosion due to wave action (see fig. 4.6). - The surface area and distribution of continental shelves has varied in the past as a result of global changes in sea level produced by large scale melting and freezing of ice sheets. - The steep slope extending to the ocean basin ...
Document
... An echo sounder trace. A sound pulse from a ship is reflected off the seabed and returns to the ship. Transit time provides a measure of depth. For example, it takes about 2 seconds for a sound pulse to strike the bottom and return to the ship when the water depth is 1,500 meters (4,900 feet). Bott ...
... An echo sounder trace. A sound pulse from a ship is reflected off the seabed and returns to the ship. Transit time provides a measure of depth. For example, it takes about 2 seconds for a sound pulse to strike the bottom and return to the ship when the water depth is 1,500 meters (4,900 feet). Bott ...
Shallow Seas
... sea floor beneath the kelp may be covered with marine growth, or relatively barren if heavily grazed by sea urchins ...
... sea floor beneath the kelp may be covered with marine growth, or relatively barren if heavily grazed by sea urchins ...
A Review of the Major Marine Environmental Concerns Off the
... layer, are far more alarming if continued at the present rate. Marine life, with the exception of those organisms living at the sea surface, is less vulnerable to genetic damage than are their terrestrial counterparts because of the rapid absorption of ultraviolet rays in seawater. The way fishery r ...
... layer, are far more alarming if continued at the present rate. Marine life, with the exception of those organisms living at the sea surface, is less vulnerable to genetic damage than are their terrestrial counterparts because of the rapid absorption of ultraviolet rays in seawater. The way fishery r ...
Seasonal distribution of immature pollock in the northern Okhotsk Sea
... Up to 4.5 million tons of seafood was harvested in the second half of the 1980s in the Bering Sea, an area of only 0.6% of the global ocean. This makes its productivity commensurable with that of the Peruvian and West African upwelling areas. Fish occupy upper trophic levels and can be regarded as a ...
... Up to 4.5 million tons of seafood was harvested in the second half of the 1980s in the Bering Sea, an area of only 0.6% of the global ocean. This makes its productivity commensurable with that of the Peruvian and West African upwelling areas. Fish occupy upper trophic levels and can be regarded as a ...
Influence of biotic and abiotic factors on the metazoan parasite
... Some ecological studies on fish parasites, mainly in marine fishes, have attempted to relate host features such as body size, habitat, distributional range, and feeding and schooling habits with parasite diversity (Rodhe 2010; Timi et al. 2010). These studies have pointed out that the diversity of p ...
... Some ecological studies on fish parasites, mainly in marine fishes, have attempted to relate host features such as body size, habitat, distributional range, and feeding and schooling habits with parasite diversity (Rodhe 2010; Timi et al. 2010). These studies have pointed out that the diversity of p ...
Benthic invertebrate bycatch from a deep
... ANOSIM tests showed significant differences in bycatch composition between the hill and flat tows (R=0.307, significance level 50.05%), and between hill tows from the Graveyard and those from the NE area (R=0.513, significance level 0.3%). (The significance level in ANOSIM tests refers to the percen ...
... ANOSIM tests showed significant differences in bycatch composition between the hill and flat tows (R=0.307, significance level 50.05%), and between hill tows from the Graveyard and those from the NE area (R=0.513, significance level 0.3%). (The significance level in ANOSIM tests refers to the percen ...
Corals, Anemones, Sea Fans, and Jellyfish
... • Soft coral and sea fans grow into tree-like structures built on protein skeletons. They are not reef builders. • Anemones have a mutualistic relationship with various species of anemonefish. – The fish receive protection by living in the anemone and the anemone receives food from the fish. Diver ...
... • Soft coral and sea fans grow into tree-like structures built on protein skeletons. They are not reef builders. • Anemones have a mutualistic relationship with various species of anemonefish. – The fish receive protection by living in the anemone and the anemone receives food from the fish. Diver ...
Dinoflagellates
... Dr. Gunter Fishlin PhD (44) said "our Loch Ness Exploration Program has been looking for evidence of unknown creatures living in Loch Ness. We now believe that, while firm evidence of a large dinosaur living beneath the waves still eludes us, we have at least established the presence of dinoflagella ...
... Dr. Gunter Fishlin PhD (44) said "our Loch Ness Exploration Program has been looking for evidence of unknown creatures living in Loch Ness. We now believe that, while firm evidence of a large dinosaur living beneath the waves still eludes us, we have at least established the presence of dinoflagella ...
Abstracts - Pacific Estuarine Research Society
... Francisco Estuary (SFE). Recent studies have challenged the basic conceptual model for Longfin smelt life history. The old paradigm is that Longfim smelt are an open water pelagic fish that migrate from the ocean into freshwater upstream of the SFE to spawn and the young advect downstream into the l ...
... Francisco Estuary (SFE). Recent studies have challenged the basic conceptual model for Longfin smelt life history. The old paradigm is that Longfim smelt are an open water pelagic fish that migrate from the ocean into freshwater upstream of the SFE to spawn and the young advect downstream into the l ...
Hoto (AZTI response)
... water column features, the physical and chemical nature of the seabed, and the benthic communities. The impact can be observed at short- or long-term. The potential impact of these activities could be observed in: - A deterioration in the overall quality of the marine system - A reduction in the soc ...
... water column features, the physical and chemical nature of the seabed, and the benthic communities. The impact can be observed at short- or long-term. The potential impact of these activities could be observed in: - A deterioration in the overall quality of the marine system - A reduction in the soc ...
Cruise Report
... Summary of Observations/Findings: Landed at 109.3 m depth on slope of Taema Bank in calcareous (halimeda algae sand). Proceeded up slope to 60 m contour, making observations along the way, in search of southern edge of main corals of Taema. Not finding this at 60 m, we proceeded further up slope to ...
... Summary of Observations/Findings: Landed at 109.3 m depth on slope of Taema Bank in calcareous (halimeda algae sand). Proceeded up slope to 60 m contour, making observations along the way, in search of southern edge of main corals of Taema. Not finding this at 60 m, we proceeded further up slope to ...
blue economy - Ministry of Fisheries and Livestock
... tremendous pressure on the resources. There are signs of overexploitation of some important demersal species like grunters, threadfins, snapper and large croakers and catfishes. In this desperate situation the fishers are trying to catch fish by decreasing their mesh size and other ...
... tremendous pressure on the resources. There are signs of overexploitation of some important demersal species like grunters, threadfins, snapper and large croakers and catfishes. In this desperate situation the fishers are trying to catch fish by decreasing their mesh size and other ...
What`s the Catch? Challenges and Opportunities of the U.S. Fishing
... to a single owner, a patch of lake or ocean is common property, open to all. The lack of well-defined property rights in the fishing industry can create incentives that discourage sustainability. Consider an open access fishery, where fishing can occur without any regulation or agreements. In such a ...
... to a single owner, a patch of lake or ocean is common property, open to all. The lack of well-defined property rights in the fishing industry can create incentives that discourage sustainability. Consider an open access fishery, where fishing can occur without any regulation or agreements. In such a ...
Review of the Influence of Oceanographic Factors on Cephalopod
... 1966; Wells and Wells, 1977). However, general patterns in the ecology of widely-distributed species are probably better identified by examining large-scale physical factors such as ocean climate and major currents. This may be possible for the pelagic squids which include the commercially-important ...
... 1966; Wells and Wells, 1977). However, general patterns in the ecology of widely-distributed species are probably better identified by examining large-scale physical factors such as ocean climate and major currents. This may be possible for the pelagic squids which include the commercially-important ...
Reef fish of the Sugar Loaf Islands
... longlining are prohibited. During 2001–03, reef fish species were surveyed by underwater visual census inside SLIMPA and at adjacent, similar reference sites. More reef fish, and a greater diversity of reef fishes, were found inside SLIMPA than at the reference sites. The greater abundance and varie ...
... longlining are prohibited. During 2001–03, reef fish species were surveyed by underwater visual census inside SLIMPA and at adjacent, similar reference sites. More reef fish, and a greater diversity of reef fishes, were found inside SLIMPA than at the reference sites. The greater abundance and varie ...
Aalborg Universitet MEFEPO
... 1. The South Western Waters Regional Advisory Council (SWW RAC) covers the Atlantic area from the point of Brittany in the north to the Straits of Gibraltar in the south, as well as the ultraperipheric regions of Madeira, Azores and the Canarias Islands. Only the Azores Archipelago is considered in ...
... 1. The South Western Waters Regional Advisory Council (SWW RAC) covers the Atlantic area from the point of Brittany in the north to the Straits of Gibraltar in the south, as well as the ultraperipheric regions of Madeira, Azores and the Canarias Islands. Only the Azores Archipelago is considered in ...
there`s no place like home
... frequently support a garden of coral, sponges, algae, tube-dwelling worms, and other invertebrates attached to the surface. Living habitats based on bedrock provide food, shelter, spawning and nursery areas for a large diversity of fish and invertebrates.13 Boulders and cobbles also provide enough r ...
... frequently support a garden of coral, sponges, algae, tube-dwelling worms, and other invertebrates attached to the surface. Living habitats based on bedrock provide food, shelter, spawning and nursery areas for a large diversity of fish and invertebrates.13 Boulders and cobbles also provide enough r ...
14. AI core bottom trawling area - North Pacific Fishery Management
... disturbed by mobile fishing gear on Georges Bank had lower levels of benthic production (both biomass and energy) when compared to undisturbed areas (Hermsen et al. 2003). Research conducted in Alaska confirms research in other regions indicating that bottom trawling gear damages sensitive benthos. ...
... disturbed by mobile fishing gear on Georges Bank had lower levels of benthic production (both biomass and energy) when compared to undisturbed areas (Hermsen et al. 2003). Research conducted in Alaska confirms research in other regions indicating that bottom trawling gear damages sensitive benthos. ...
Blue growth in the deep sea: balancing economic and
... And its hided net with meshes set, Odd fishes to entangle! The ship may move thro’ the waves above, ‘Mid scenes exciting wonder, But braver sights the dredge delights, As it roves the waters under….. Blue growth and the deep sea ...
... And its hided net with meshes set, Odd fishes to entangle! The ship may move thro’ the waves above, ‘Mid scenes exciting wonder, But braver sights the dredge delights, As it roves the waters under….. Blue growth and the deep sea ...
Demersal fish
Demersal fish live and feed on or near the bottom of seas or lakes (the demersal zone). They occupy the sea floors and lake beds, which usually consist of mud, sand, gravel or rocks. In coastal waters they are found on or near the continental shelf, and in deep waters they are found on or near the continental slope or along the continental rise. They are not generally found in the deepest waters, such as abyssal depths or on the abyssal plain, but they can be found around seamounts and islands. The word demersal comes from the Latin demergere, which means to sink.Demersal fish are bottom feeders. They can be contrasted with pelagic fish which live and feed away from the bottom in the open water column. Demersal fish fillets contain little fish oil (one to four percent), whereas pelagic fish can contain up to 30 percent.