Fast and slow spreading ridges - Archimer
... Different parts of the world ridge system have quite different morphologies, which reflect different constructional processes. It appears that hydrothermal circulation at all spreading centers is an important exchange process between the ocean and the newly formed oceanic crust. This hydrothermal ci ...
... Different parts of the world ridge system have quite different morphologies, which reflect different constructional processes. It appears that hydrothermal circulation at all spreading centers is an important exchange process between the ocean and the newly formed oceanic crust. This hydrothermal ci ...
Consulta: creatorFacets:"Mascle, Jean" Registros recuperados: 28
... Alexandre; Ducassou, Emmanuelle; Dupre, Stephanie; Mascle, Jean; Rodrigues, Luiz Frederico. On the central Nile deep-sea fan, stratified sediments overlying mass-transport deposits (MTDs) are deformed into slope-parallel seabed undulations associated with fluid seepage. The western part of this syst ...
... Alexandre; Ducassou, Emmanuelle; Dupre, Stephanie; Mascle, Jean; Rodrigues, Luiz Frederico. On the central Nile deep-sea fan, stratified sediments overlying mass-transport deposits (MTDs) are deformed into slope-parallel seabed undulations associated with fluid seepage. The western part of this syst ...
Simulation of the mantle and crustal helium isotope
... to be improved: in the eastern basin, tritium/helium-3 simulations have highlighted the too-weak formation of Adriatic Deep Water (AdDW), followed by a weak contribution to the Eastern Mediterranean Deep Water (EMDW) in the Ionian sub-basin. In the western basin, the production of WMDW is correct, b ...
... to be improved: in the eastern basin, tritium/helium-3 simulations have highlighted the too-weak formation of Adriatic Deep Water (AdDW), followed by a weak contribution to the Eastern Mediterranean Deep Water (EMDW) in the Ionian sub-basin. In the western basin, the production of WMDW is correct, b ...
Isotopic Tracers of the Marine Nitrogen Cycle: Present and Past
... concentrations found in the well-oxygenated open ocean of today and wellconserved structure of its active site across phylogenetic groupings, it has been suggested that nitrogenase evolved early in the Earth’s history before oxygenation of the atmosphere several billion years ago [6]. O2 sensitivity ...
... concentrations found in the well-oxygenated open ocean of today and wellconserved structure of its active site across phylogenetic groupings, it has been suggested that nitrogenase evolved early in the Earth’s history before oxygenation of the atmosphere several billion years ago [6]. O2 sensitivity ...
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... WECAFC area and noted that deep-sea fisheries in the High Seas had been and were occurring, and that they were likely to increase in the future. The Working Group also noted the international instruments and recommendations related to protecting vulnerable marine ecosystems (VMEs) in the high seas o ...
... WECAFC area and noted that deep-sea fisheries in the High Seas had been and were occurring, and that they were likely to increase in the future. The Working Group also noted the international instruments and recommendations related to protecting vulnerable marine ecosystems (VMEs) in the high seas o ...
Seamounts of the North-East Atlantic
... number of seamounts at several hundred meters depth. Studies of the pelagic communities above seamounts reveal qualitative and/or quantitative differences when compared to the surrounding water. The higher biomass of planktonic organisms over seamounts constitutes an important basis for the diet of ...
... number of seamounts at several hundred meters depth. Studies of the pelagic communities above seamounts reveal qualitative and/or quantitative differences when compared to the surrounding water. The higher biomass of planktonic organisms over seamounts constitutes an important basis for the diet of ...
The Crozet oceanic zone
... front, SAF subantarctic front and PF polar front). The French EEZ is indicated by a black line. ...
... front, SAF subantarctic front and PF polar front). The French EEZ is indicated by a black line. ...
Seamounts of the North-East Atlantic - Mar-Eco
... number of seamounts at several hundred meters depth. Studies of the pelagic communities above seamounts reveal qualitative and/or quantitative differences when compared to the surrounding water. The higher biomass of planktonic organisms over seamounts constitutes an important basis for the diet of ...
... number of seamounts at several hundred meters depth. Studies of the pelagic communities above seamounts reveal qualitative and/or quantitative differences when compared to the surrounding water. The higher biomass of planktonic organisms over seamounts constitutes an important basis for the diet of ...
Marine Animalia Organism Diversity and Reef Condition on Two
... such as temperature, leading them to expel the symbiotic algae living in their tissues, causing them to turn completely white (Douglas, 2003). While corals can survive a bleaching event, these events generally result in depressed growth and increased mortality (Douglas, 2003). Since the early 1980s, ...
... such as temperature, leading them to expel the symbiotic algae living in their tissues, causing them to turn completely white (Douglas, 2003). While corals can survive a bleaching event, these events generally result in depressed growth and increased mortality (Douglas, 2003). Since the early 1980s, ...
Deep-Sea Corals: Special Issue of Current, the Journal of Marine
... The least-explored forests on Earth aren’t in rain-drenched Amazonia or the lofty Himalayas; they’re in the oceans’ depths. These deep-sea “forests” of gorgonian corals and reefs of stony corals were nearly unknown to science just a few years ago. But now scientists are finding that some of the sea’ ...
... The least-explored forests on Earth aren’t in rain-drenched Amazonia or the lofty Himalayas; they’re in the oceans’ depths. These deep-sea “forests” of gorgonian corals and reefs of stony corals were nearly unknown to science just a few years ago. But now scientists are finding that some of the sea’ ...
Goal 2 - The learner will demonstrate an
... The students will observe/create a Cartesian Diver to stimulate more discussion of the technology used in ocean exploration. There are a variety of ways to make Cartesian divers. You can choose to do this part in one of the following ways: - as a demonstration for your students to observe and analyz ...
... The students will observe/create a Cartesian Diver to stimulate more discussion of the technology used in ocean exploration. There are a variety of ways to make Cartesian divers. You can choose to do this part in one of the following ways: - as a demonstration for your students to observe and analyz ...
Whales as Detritus in Marine Ecosystems
... from whale falls averages 3.8 x 10-4 g Corg y-1 (see Jelmert and Oppen-Bernsten (1996) for similar ...
... from whale falls averages 3.8 x 10-4 g Corg y-1 (see Jelmert and Oppen-Bernsten (1996) for similar ...
Presence of Prochlorococcus in the aphotic waters
... 800 m, the cellular fluorescence signals of the Prochlorococcus cells at the aphotic depths were much higher than those in the upper euphotic zone (mostly 5–20 % of the maximum) (Fig. S5). In addition, the side light scatter signals (indices of cell size and cell density) of the Prochlorococcus cell ...
... 800 m, the cellular fluorescence signals of the Prochlorococcus cells at the aphotic depths were much higher than those in the upper euphotic zone (mostly 5–20 % of the maximum) (Fig. S5). In addition, the side light scatter signals (indices of cell size and cell density) of the Prochlorococcus cell ...
Sulphur Emission and Transformations at Deep Sea Hydrothermal
... occur at the bottom of the escarpment of the western Florida continental platform at a depth of 3000 m. The extruding waters contain hydrogen sulphide and produce an invertebrate-dominated ecosystem of less spectacular productivity than that at the vents, but possibly stretched along the entire esca ...
... occur at the bottom of the escarpment of the western Florida continental platform at a depth of 3000 m. The extruding waters contain hydrogen sulphide and produce an invertebrate-dominated ecosystem of less spectacular productivity than that at the vents, but possibly stretched along the entire esca ...
The Effects of Plastic Pollution on Aquatic Wildlife
... of evidence supporting that fish are consuming plastics. Of the 7 different species studied in the North Sea, only 2.6 % of the 1203 collected fish contained plastic pieces in the digestive tracts (Foekema et al. 2013). When the gastrointestinal tracts of 504 fish were studied in the English Channel ...
... of evidence supporting that fish are consuming plastics. Of the 7 different species studied in the North Sea, only 2.6 % of the 1203 collected fish contained plastic pieces in the digestive tracts (Foekema et al. 2013). When the gastrointestinal tracts of 504 fish were studied in the English Channel ...
Ch. 16 Marine and Coastal Systems: Resources, Impacts, and
... • Coral reef = a mass of calcium carbonate composed of the skeletons of corals - Consists of millions of densely packed individuals - Protect shorelines by absorbing waves - Innumerable invertebrates and fish species find food and shelter in reef nooks and crannies Copyright © 2008 Pearson Education ...
... • Coral reef = a mass of calcium carbonate composed of the skeletons of corals - Consists of millions of densely packed individuals - Protect shorelines by absorbing waves - Innumerable invertebrates and fish species find food and shelter in reef nooks and crannies Copyright © 2008 Pearson Education ...
As technology has advanced so has our understanding of the
... dominance by a few species at each site. Over 75% of vent species occur at only one site. 25 This endemism may mean that species are restricted to individual vent sites. It also appears as if different oceans support quite different biological communities. Very few species have been found in more th ...
... dominance by a few species at each site. Over 75% of vent species occur at only one site. 25 This endemism may mean that species are restricted to individual vent sites. It also appears as if different oceans support quite different biological communities. Very few species have been found in more th ...
Microbial activity in bentonite buffers. Literature study
... groundwater and bentonite-based materials. Sulphate reducers have been detected in various high-pressure environments, and sulp hate-reduction based on hydrogen as an energy source is considered a major microbial process in deep subsurface environments. In bentonite, microbial activity is strongly s ...
... groundwater and bentonite-based materials. Sulphate reducers have been detected in various high-pressure environments, and sulp hate-reduction based on hydrogen as an energy source is considered a major microbial process in deep subsurface environments. In bentonite, microbial activity is strongly s ...
Marine Science - Integrative Ecology Lab
... the reproductive potential for the shrimp population, and stock assessments based on fishery and research surveys are done each year to follow stock dynamics (e.g. DFO, 2002, 2012a). The use of science advice based on peer reviews and meetings with the industry, resulting in scientific advices and r ...
... the reproductive potential for the shrimp population, and stock assessments based on fishery and research surveys are done each year to follow stock dynamics (e.g. DFO, 2002, 2012a). The use of science advice based on peer reviews and meetings with the industry, resulting in scientific advices and r ...
Fishing for the Future: Trends and Issues in Global
... • The ocean and the freshwater ecosystems of the world make massive contributions to people’s well-being via the many vital social and environmental services they provide (for example, food and nutrition, employment and incomes, carbon cycling and sequestration). A range of human activities in and ...
... • The ocean and the freshwater ecosystems of the world make massive contributions to people’s well-being via the many vital social and environmental services they provide (for example, food and nutrition, employment and incomes, carbon cycling and sequestration). A range of human activities in and ...
Fishing for the Future: Trends and Issues in Global
... • The ocean and the freshwater ecosystems of the world make massive contributions to people’s well-being via the many vital social and environmental services they provide (for example, food and nutrition, employment and incomes, carbon cycling and sequestration). A range of human activities in and ...
... • The ocean and the freshwater ecosystems of the world make massive contributions to people’s well-being via the many vital social and environmental services they provide (for example, food and nutrition, employment and incomes, carbon cycling and sequestration). A range of human activities in and ...
Paleoceanographical proxies based on deep-sea
... and only relations between individual species or species groups and single environmental parameters could be analysed, leading to major oversimplification of the complex natural situation in which a host of environmental factors interact and control foraminiferal ecology. Pflum and Frerichs (1976) n ...
... and only relations between individual species or species groups and single environmental parameters could be analysed, leading to major oversimplification of the complex natural situation in which a host of environmental factors interact and control foraminiferal ecology. Pflum and Frerichs (1976) n ...
Odor tracking in sharks is reduced under future ocean acidification conditions
... sharks and other elasmobranchs are similarly affected, this could have significant consequences for marine ecosystems globally. Here, we show that projected future CO2 levels impair odor tracking behavior of the smooth dogfish (Mustelus canis). Adult M. canis were held for 5 days in a current-day co ...
... sharks and other elasmobranchs are similarly affected, this could have significant consequences for marine ecosystems globally. Here, we show that projected future CO2 levels impair odor tracking behavior of the smooth dogfish (Mustelus canis). Adult M. canis were held for 5 days in a current-day co ...
Ch. 16 Marine and Coastal Systems: Resources, Impacts, and
... • Coral reef = a mass of calcium carbonate composed of the skeletons of corals - Consists of millions of densely packed individuals - Protect shorelines by absorbing waves - Innumerable invertebrates and fish species find food and shelter in reef nooks and crannies Copyright © 2008 Pearson Education ...
... • Coral reef = a mass of calcium carbonate composed of the skeletons of corals - Consists of millions of densely packed individuals - Protect shorelines by absorbing waves - Innumerable invertebrates and fish species find food and shelter in reef nooks and crannies Copyright © 2008 Pearson Education ...
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).