Deep-Sea Life
... participants were given access to the course presentations, associated key literature and webinar recordings. They were also given course participation certificates. Post-course evaluations were extremely positive, with the majority of participants eager to use their new knowledge in their current r ...
... participants were given access to the course presentations, associated key literature and webinar recordings. They were also given course participation certificates. Post-course evaluations were extremely positive, with the majority of participants eager to use their new knowledge in their current r ...
PDF
... found in the central subtropical gyres while the highest surface abundances (0.7 m1) were found along the continental shelves and within the subpolar gyre, confirming recent satellite-based assessments of surface CDOM distribution. Within the ocean interior, CDOM abundances were relatively high (0. ...
... found in the central subtropical gyres while the highest surface abundances (0.7 m1) were found along the continental shelves and within the subpolar gyre, confirming recent satellite-based assessments of surface CDOM distribution. Within the ocean interior, CDOM abundances were relatively high (0. ...
pathways of effects for finfish and shellfish aquaculture
... introduction of non-indigenous bivalves in Canada. However, information from outside of Canada indicates that escaped non-indigenous bivalves established beyond the aquaculture site could, in some cases, result in far-field alterations in fish habitat and water quality, as well as trophic interactio ...
... introduction of non-indigenous bivalves in Canada. However, information from outside of Canada indicates that escaped non-indigenous bivalves established beyond the aquaculture site could, in some cases, result in far-field alterations in fish habitat and water quality, as well as trophic interactio ...
05_chapter 1
... The Phylum Chaetognatha commonly called “arrow worm”, exclusively marine organisms and majority of them are planktonic. Chaetognatha, meaning hairjaws, which belongs to phylum of Predatory marine worms that are a major component of plankton worldwide. They can be found in all oceans from the surface ...
... The Phylum Chaetognatha commonly called “arrow worm”, exclusively marine organisms and majority of them are planktonic. Chaetognatha, meaning hairjaws, which belongs to phylum of Predatory marine worms that are a major component of plankton worldwide. They can be found in all oceans from the surface ...
Translation Series No. 421
... Special experiments showed that prepared [predvaritelnye] membrane filters such as are used for filtering phytoplankton from fresh water,introdUced_errors when used to determine phytoplankton production in the sea, because these filters would let part of the small peridinean algae go through them, a ...
... Special experiments showed that prepared [predvaritelnye] membrane filters such as are used for filtering phytoplankton from fresh water,introdUced_errors when used to determine phytoplankton production in the sea, because these filters would let part of the small peridinean algae go through them, a ...
wgfast12
... meso and submeso scales is increasingly suspected to play a fundamental role in the functioning of marine ecosystems. The method allows for the resolution of a large range of meso and submesoscale structures such as eddies, filaments and internal waves. This information is used to estimate the habit ...
... meso and submeso scales is increasingly suspected to play a fundamental role in the functioning of marine ecosystems. The method allows for the resolution of a large range of meso and submesoscale structures such as eddies, filaments and internal waves. This information is used to estimate the habit ...
Trachurus trachurus
... information on current stock units, distribution area and biology knowledge. In general, the European Atlantic waters and the European coasts in the Mediterranean Sea were sampled with more intensity due to the interest in improving the knowledge in areas where there are active programmes for managi ...
... information on current stock units, distribution area and biology knowledge. In general, the European Atlantic waters and the European coasts in the Mediterranean Sea were sampled with more intensity due to the interest in improving the knowledge in areas where there are active programmes for managi ...
Chapter 5 - The World of the Census
... 1983). Trawl records in the Atlantic off Western Europe revealed that depth ranges of many species were limited to sometimes little more than several hundred meters, ...
... 1983). Trawl records in the Atlantic off Western Europe revealed that depth ranges of many species were limited to sometimes little more than several hundred meters, ...
7.1-7.2 Bay of Biscay and Iberian ecosystem overview
... communities (Sánchez, 1993; Serrano et al., 2008).The mean fish species richness shows a progressive decrease with depth whereas the inverse phenomena appears in invertebrates, which prefer deeper water and muddy substrates owing to their predominantly detritivorous feeding habits (Olaso, 1990). Med ...
... communities (Sánchez, 1993; Serrano et al., 2008).The mean fish species richness shows a progressive decrease with depth whereas the inverse phenomena appears in invertebrates, which prefer deeper water and muddy substrates owing to their predominantly detritivorous feeding habits (Olaso, 1990). Med ...
Greenpeace `Red-Grade` Criteria for Unsustainable Fisheries This
... areas containing the least sensitive benthic environments are often trawled so regularly that they have little chance to recover, and there are significant levels bycatch. Fish that are too small or the wrong species to sell are thrown overboard, dead or dying. Demersal otter trawls commonly throw ...
... areas containing the least sensitive benthic environments are often trawled so regularly that they have little chance to recover, and there are significant levels bycatch. Fish that are too small or the wrong species to sell are thrown overboard, dead or dying. Demersal otter trawls commonly throw ...
Mediterranean deep-sea corals: reasons for protection
... indicates that deep-sea corals have existed in the Mediterranean region for over 480,000 years (McCulloch et al., 2010). Many living deep-sea corals species have been identified in new Mediterranean locations over the past years (Gori et al., 2013; Angiolillo et al., 2012; Pardo et al., 2011; Tavian ...
... indicates that deep-sea corals have existed in the Mediterranean region for over 480,000 years (McCulloch et al., 2010). Many living deep-sea corals species have been identified in new Mediterranean locations over the past years (Gori et al., 2013; Angiolillo et al., 2012; Pardo et al., 2011; Tavian ...
Acoustic study of the Rıo de la Plata estuarine front
... correlated to a wedge shape, which corresponded with the salty waters below the halocline. The surface salinity front was associated with high values of Sv in most of the water column. Sv peaked at the halocline depth in the inner half of the mixohaline zone (Stations 249e252; Figure 2). At Station ...
... correlated to a wedge shape, which corresponded with the salty waters below the halocline. The surface salinity front was associated with high values of Sv in most of the water column. Sv peaked at the halocline depth in the inner half of the mixohaline zone (Stations 249e252; Figure 2). At Station ...
Potential for deep sea invasion by Mediterranean shallow water
... vials which were completely filled with seawater and randomly assigned to 1 of 12 pressure/temperature con~binations(5, 10, 15°C X 1, 50, 150 and 250 atm). [Note: The S1 unit for pressure is the Pascal (Pa) with 10' Pa being equivalent to 1 atmosphere. We have elected to use atmospheres (atrn) as 1 ...
... vials which were completely filled with seawater and randomly assigned to 1 of 12 pressure/temperature con~binations(5, 10, 15°C X 1, 50, 150 and 250 atm). [Note: The S1 unit for pressure is the Pascal (Pa) with 10' Pa being equivalent to 1 atmosphere. We have elected to use atmospheres (atrn) as 1 ...
14. AI core bottom trawling area - North Pacific Fishery Management
... NOAA Fisheries has identified corals and sponges in Alaska as HAPC as indicated in Amendment 55 to the Groundfish FMPs (1998). Additionally, in a letter from Dr. William Hogarth to Mr. Jim Ayers dated September 9, 2002, Dr. Hogarth stated, “Corals, sponges, and other living substrate in waters off A ...
... NOAA Fisheries has identified corals and sponges in Alaska as HAPC as indicated in Amendment 55 to the Groundfish FMPs (1998). Additionally, in a letter from Dr. William Hogarth to Mr. Jim Ayers dated September 9, 2002, Dr. Hogarth stated, “Corals, sponges, and other living substrate in waters off A ...
Summary and Conclusion
... observed inside the Rhizosolenia cells. Zooplankton biomass was very low in the area where Rhizosolenia mat was observed and was represented by few salps and large copepods. Reduction in zooplankton standing crop could be due to the unpalatability of Rhizosolenia and possibly the presence of ectocri ...
... observed inside the Rhizosolenia cells. Zooplankton biomass was very low in the area where Rhizosolenia mat was observed and was represented by few salps and large copepods. Reduction in zooplankton standing crop could be due to the unpalatability of Rhizosolenia and possibly the presence of ectocri ...
Deep-scattering layer, gas-bladder density, and size estimates using
... by lowering a multifrequency AOS probe in steps to a maximum of 950 m. The AOS probe is reported in Ryan et al. (2009) with the results from the split beam 38 and 120 kHz transducers reported here (Figure 1, Table 1). The system was calibrated at depth with a 38.1 mm tungsten carbide sphere suspende ...
... by lowering a multifrequency AOS probe in steps to a maximum of 950 m. The AOS probe is reported in Ryan et al. (2009) with the results from the split beam 38 and 120 kHz transducers reported here (Figure 1, Table 1). The system was calibrated at depth with a 38.1 mm tungsten carbide sphere suspende ...
Fishes on the Antarctic continental shelf: evolution of a marine
... Continental shelves are shallow extensions of continental landmasses into the sea. The shelf break, the transition to the continental slope, averages 130 m deep over most of the world ocean (Kennett, 1982). Although shelves represent only c. 7% of the ocean’s surface and 0·2% of the ocean’s volume ( ...
... Continental shelves are shallow extensions of continental landmasses into the sea. The shelf break, the transition to the continental slope, averages 130 m deep over most of the world ocean (Kennett, 1982). Although shelves represent only c. 7% of the ocean’s surface and 0·2% of the ocean’s volume ( ...
Chapter 51. Biological Communities on Seamounts and Other
... deepest ocean depths, the trenches have flat floors with accumulated fine sediments. Trenches are formed as oceanic plates collide with continental plates; the heavier oceanic plates are subducted, creating a trench. Trenches are generally narrow (<40 km wide), V-shaped in cross-section and are foun ...
... deepest ocean depths, the trenches have flat floors with accumulated fine sediments. Trenches are formed as oceanic plates collide with continental plates; the heavier oceanic plates are subducted, creating a trench. Trenches are generally narrow (<40 km wide), V-shaped in cross-section and are foun ...
Dominant zooplankton species shift in Changjiang River Estuary
... During the last decades anthropogenic eutrophication has been identified as the key ecological problem for the Sea of Marmara. This forcing caused significant shifts in zooplankton community structure and the highly stratified basin became a Cladocera dominated system and pollution indicator species ...
... During the last decades anthropogenic eutrophication has been identified as the key ecological problem for the Sea of Marmara. This forcing caused significant shifts in zooplankton community structure and the highly stratified basin became a Cladocera dominated system and pollution indicator species ...
Chapter 3
... times due to a continuous westward drift of the Americas and sea levels fluctuations. During the Pliocene (2-5 mya) Central America arose connecting North and South America (which were isolated for many million years). This event produced a phenomenon known as “the great american biotic interchange” ...
... times due to a continuous westward drift of the Americas and sea levels fluctuations. During the Pliocene (2-5 mya) Central America arose connecting North and South America (which were isolated for many million years). This event produced a phenomenon known as “the great american biotic interchange” ...
biogeographic atlas of the southern ocean
... range of which extends into Antarctic waters. In contrast to more mobile animals such as squids or shes, gelatinous zooplankton, being planktonic, are more liable to be transported out of their “home” ranges and either into or out of Antarctic waters through horizontal advection. This is particularl ...
... range of which extends into Antarctic waters. In contrast to more mobile animals such as squids or shes, gelatinous zooplankton, being planktonic, are more liable to be transported out of their “home” ranges and either into or out of Antarctic waters through horizontal advection. This is particularl ...
Working Group 118 Annual Report - Census of Marine Life Secretariat
... necessary to find an accurate, inexpensive way of locating the positions of samples taken by SCUBA divers in the 0-10 m depth band. Advice is needed about (a) the selection of data loggers (during dives and over longer [≥ 1-year] periods); (b) the use of AUVs for habitat mapping and optical identifi ...
... necessary to find an accurate, inexpensive way of locating the positions of samples taken by SCUBA divers in the 0-10 m depth band. Advice is needed about (a) the selection of data loggers (during dives and over longer [≥ 1-year] periods); (b) the use of AUVs for habitat mapping and optical identifi ...
OOI RFA Cover Sheet
... Sample synopticity, resolution, and range of these Eulerian (i.e. stationary grid) surveys are limited by vessel speed, time available, vessel manoeuvrability, gear restrictions, and surface conditions. Temporal surveys from a single location or surveys conducted by a suite of sensors have not been ...
... Sample synopticity, resolution, and range of these Eulerian (i.e. stationary grid) surveys are limited by vessel speed, time available, vessel manoeuvrability, gear restrictions, and surface conditions. Temporal surveys from a single location or surveys conducted by a suite of sensors have not been ...
Environmental aspects of manganese nodule mining
... Bottom currents in this region distant from continental margins are generally the result of the slow northward movement of dense, cold water that originally formed at the surface in the Antarctic. Indirect and direct evidence shows that bottom currents in parts of the world’s oceans flow at much hig ...
... Bottom currents in this region distant from continental margins are generally the result of the slow northward movement of dense, cold water that originally formed at the surface in the Antarctic. Indirect and direct evidence shows that bottom currents in parts of the world’s oceans flow at much hig ...
IOTC Science Glossary
... BLIM (biomass limit reference point). The point beyond which the risk to the stock is regarded as unacceptably high. BMEY (biomass at maximum economic yield). Average biomass corresponding to maximum economic yield. BMSY (biomass at maximum sustainable yield). Average biomass corresponding to maximu ...
... BLIM (biomass limit reference point). The point beyond which the risk to the stock is regarded as unacceptably high. BMEY (biomass at maximum economic yield). Average biomass corresponding to maximum economic yield. BMSY (biomass at maximum sustainable yield). Average biomass corresponding to maximu ...
Deep sea fish
Deep-sea fish are fish that live in the darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish. Other deep sea fish include the flashlight fish, cookiecutter shark, bristlemouths, anglerfish, and viperfish.Only about 2% of known marine species inhabit the pelagic environment. This means that they live in the water column as opposed to the benthic organisms that live in or on the sea floor. Deep-sea organisms generally inhabit bathypelagic (1000m-4000m deep) and abyssopelagic (4000m-6000m deep) zones. However, characteristics of deep-sea organisms, such as bioluminescence can be seen in the mesopelagic (200m-1000m deep) zone as well. The mesopelagic zone is the disphotic zone, meaning light there is minimal but still measurable. The oxygen minimum layer exists somewhere between a depth of 700m and 1000m deep depending on the place in the ocean. This area is also where nutrients are most abundant. The bathypelagic and abyssopelagic zones are aphotic, meaning that no light penetrates this area of the ocean. These zones make up about 75% of the inhabitable ocean space.The epipelagic zone (0m-200m) is the area where light penetrates the water and photosynthesis occurs. This is also known as the photic zone. Because this typically extends only a few hundred meters below the water, the deep sea, about 90% of the ocean volume, is in darkness. The deep sea is also an extremely hostile environment, with temperatures that rarely exceed 3 °C and fall as low as -1.8 °C (with the exception of hydrothermal vent ecosystems that can exceed 350 °C), low oxygen levels, and pressures between 20 and 1,000 atmospheres (between 2 and 100 megapascals).