Massive marine methane emissions from near
... higher than values characteristic of continental shelves (~30 μmol m−2 d−1) and three orders of magnitude higher than values characteristic of the open ocean (~0.4 μmol m−2 d−1). The high methane concentrations (up to 1,128 nmol L−1) that sustain these fluxes are related to the shallow and wellmixed ...
... higher than values characteristic of continental shelves (~30 μmol m−2 d−1) and three orders of magnitude higher than values characteristic of the open ocean (~0.4 μmol m−2 d−1). The high methane concentrations (up to 1,128 nmol L−1) that sustain these fluxes are related to the shallow and wellmixed ...
Seawater nutrient and carbonate ion concentrations recorded as P
... cosmopolitan geographic distribution, depth range of 35– 2500 m (Cairns, 1994), and exceptional thermal tolerance of 1 °C to 28 °C (Stanley and Cairns, 1988). Because of its century-long life span and relatively large skeleton (10 cm of vertical septal growth) (Cheng et al., 2000; Adkins et al., 2 ...
... cosmopolitan geographic distribution, depth range of 35– 2500 m (Cairns, 1994), and exceptional thermal tolerance of 1 °C to 28 °C (Stanley and Cairns, 1988). Because of its century-long life span and relatively large skeleton (10 cm of vertical septal growth) (Cheng et al., 2000; Adkins et al., 2 ...
Biogeosciences Coastal hypoxia and sediment biogeochemistry
... the functioning and survival of organisms. The vulnerability to low oxygen varies widely across marine organisms. Changes in organism behaviour and functioning are generally observed at higher dissolved oxygen levels than lethal oxygen thresholds (Diaz and Rosenberg, 1995; Gray et al., 2002; Vaquer- ...
... the functioning and survival of organisms. The vulnerability to low oxygen varies widely across marine organisms. Changes in organism behaviour and functioning are generally observed at higher dissolved oxygen levels than lethal oxygen thresholds (Diaz and Rosenberg, 1995; Gray et al., 2002; Vaquer- ...
ecological monitoring plan
... The proposed Manicouagan MPA is located on the north shore of the St. Lawrence estuary in Quebec, Canada. It surrounds the Manicouagan Peninsula between the Manicouagan and Betsiamites river estuaries, and extends from the low water mark out to the Laurentian Channel (isobath of 300 m depth), coveri ...
... The proposed Manicouagan MPA is located on the north shore of the St. Lawrence estuary in Quebec, Canada. It surrounds the Manicouagan Peninsula between the Manicouagan and Betsiamites river estuaries, and extends from the low water mark out to the Laurentian Channel (isobath of 300 m depth), coveri ...
Modeling of methane flows in the atmosphere resulting from seabed
... To quantitatively estimate the scale of a possible gas emission into the atmosphere from the seabed sources due to the submarine gas venting, a 3D quasi-geostrophic model of the world ocean dynamics [16] was used, supplemented with a model of dissolved methane transport by the ocean streams. The cli ...
... To quantitatively estimate the scale of a possible gas emission into the atmosphere from the seabed sources due to the submarine gas venting, a 3D quasi-geostrophic model of the world ocean dynamics [16] was used, supplemented with a model of dissolved methane transport by the ocean streams. The cli ...
Temperature and UV light affect the activity of marine cell
... wall, and cell-free which are completely free of the cell. Contrary to previous understanding, cell-free extracellular enzymes make up a substantial proportion of the total marine EEA. Little is known about these abundant cell-free enzymes, including what factors control their activity once they are ...
... wall, and cell-free which are completely free of the cell. Contrary to previous understanding, cell-free extracellular enzymes make up a substantial proportion of the total marine EEA. Little is known about these abundant cell-free enzymes, including what factors control their activity once they are ...
SECOND INTERNATIONAL INDIAN OCEAN EXPEDITION (IIOE-2)
... respects. This is largely because the Indian Ocean remains under-sampled in both space and time, especially compared to the Atlantic and Pacific oceans. The situation is compounded by the Indian Ocean being a dynamically complex and highly variable system under monsoonal influence. Many uncertaintie ...
... respects. This is largely because the Indian Ocean remains under-sampled in both space and time, especially compared to the Atlantic and Pacific oceans. The situation is compounded by the Indian Ocean being a dynamically complex and highly variable system under monsoonal influence. Many uncertaintie ...
IOC/BSRC Workshop on Black Sea Fluxes, Istanbul, Turkey, 10
... To study temporal fluctuations of temperature and salinity, it may be necessary to install NaleBrown self-recorders with a programme controller. Such a set up would be especially useful in complex marine environments, such as estuaries, where a complex, temporally variable water column structure exi ...
... To study temporal fluctuations of temperature and salinity, it may be necessary to install NaleBrown self-recorders with a programme controller. Such a set up would be especially useful in complex marine environments, such as estuaries, where a complex, temporally variable water column structure exi ...
Olivier MARCHAL
... 8. Marchal O., François R., and Scholten J., Deep Ocean Waters Don’t Run Still, Oceanus, May 4, 2007 (available at http://www.whoi.edu/oceanus/view/index.do) 7. Jackson C., Liu Y., and Marchal O. Can models of abrupt climate change be tested from sea level reconstructions?, PAGES News, vol. 14, No. ...
... 8. Marchal O., François R., and Scholten J., Deep Ocean Waters Don’t Run Still, Oceanus, May 4, 2007 (available at http://www.whoi.edu/oceanus/view/index.do) 7. Jackson C., Liu Y., and Marchal O. Can models of abrupt climate change be tested from sea level reconstructions?, PAGES News, vol. 14, No. ...
Paralytic Shellfish Poisoning: The Alaska Problem
... In addition, the butter clam has a distinctive ability to chemically bind the highly toxic STX saxitoxin in their siphon tissue (Beitler and Liston 1990), and they can retain PSP toxins for up to two years after initial ingestion (Hall 1982). The Alaska steamer or littleneck clam, Protothaca stamine ...
... In addition, the butter clam has a distinctive ability to chemically bind the highly toxic STX saxitoxin in their siphon tissue (Beitler and Liston 1990), and they can retain PSP toxins for up to two years after initial ingestion (Hall 1982). The Alaska steamer or littleneck clam, Protothaca stamine ...
Florida Institute of Oceanography - USF System
... The “Study Abroad in Florida” summer course has really become a success with the students and faculty. In 2016, which was our fourth year of offering the course, five institutions; KML, University of North Florida, University of South Florida-St. Petersburg, Florida Gulf Coast University, University ...
... The “Study Abroad in Florida” summer course has really become a success with the students and faculty. In 2016, which was our fourth year of offering the course, five institutions; KML, University of North Florida, University of South Florida-St. Petersburg, Florida Gulf Coast University, University ...
583 RADIOCARBON IN THE WATER COLUMN OF THE
... Radiocarbon enters the ocean through air-sea CO2 gas exchange, with an equilibration time of 7 to 10 yr. It mainly exists as dissolved inorganic carbonic acid in seawater. Due to its radioactive decay, dissolved inorganic 14C (DI14C) in the ocean decreases from the time it enters the ocean, allowing ...
... Radiocarbon enters the ocean through air-sea CO2 gas exchange, with an equilibration time of 7 to 10 yr. It mainly exists as dissolved inorganic carbonic acid in seawater. Due to its radioactive decay, dissolved inorganic 14C (DI14C) in the ocean decreases from the time it enters the ocean, allowing ...
Biology and Ecology of the Invasive Lionfishes, Pterois miles and
... estimates for Scorpaena (Laidig and Sakuma 1998). Dispersal of lionfish presumably occurs during the pelagic larval phase during which larvae can be dispersed across great distances. For example, lionfish eggs released in the Bahamas are capable of dispersing to New England via the Gulf Stream. Larv ...
... estimates for Scorpaena (Laidig and Sakuma 1998). Dispersal of lionfish presumably occurs during the pelagic larval phase during which larvae can be dispersed across great distances. For example, lionfish eggs released in the Bahamas are capable of dispersing to New England via the Gulf Stream. Larv ...
Metal Stable Isotopes in Paleoceanography
... to anthropogenic sources, also received increased attention through the 1990s (e.g., Mann et al. 2002, Sunda & Huntsman 1996). For these reasons, there is a need for new techniques to provide insights into the biogeochemical cycles of this class of elements and how these cycles may have been differe ...
... to anthropogenic sources, also received increased attention through the 1990s (e.g., Mann et al. 2002, Sunda & Huntsman 1996). For these reasons, there is a need for new techniques to provide insights into the biogeochemical cycles of this class of elements and how these cycles may have been differe ...
State of Knowledge of Marine Habitats of the Northern
... et al. 2002 a,b,c) addressing marine issues within the Queen Charlotte oil and gas assessment area in British Columbia, Canada, and reviews the knowledge and knowledge gaps of marine habitats. We identify what is known about the principal marine habitats, biota, general trophic structure, and fisher ...
... et al. 2002 a,b,c) addressing marine issues within the Queen Charlotte oil and gas assessment area in British Columbia, Canada, and reviews the knowledge and knowledge gaps of marine habitats. We identify what is known about the principal marine habitats, biota, general trophic structure, and fisher ...
Anbar and Rouxel, Ann. Rev. Earth Planet. Sci.
... to anthropogenic sources, also received increased attention through the 1990s (e.g., Mann et al. 2002, Sunda & Huntsman 1996). For these reasons, there is a need for new techniques to provide insights into the biogeochemical cycles of this class of elements and how these cycles may have been differe ...
... to anthropogenic sources, also received increased attention through the 1990s (e.g., Mann et al. 2002, Sunda & Huntsman 1996). For these reasons, there is a need for new techniques to provide insights into the biogeochemical cycles of this class of elements and how these cycles may have been differe ...
IMPLICATIONS OF PHYTOPLANKTON CELL DEATH LOSSES TESIS DOCTORAL Autor: Sébastien Lasternas
... of competitive exclusion (Hardin, 1960; Armstrong and McGehee, 1980) suggests that in homogeneous, well-mixed environments, species that compete for the same resource cannot coexist, and one species should finally take advantage over the others. Thus, while in many natural waters, nutrients and ligh ...
... of competitive exclusion (Hardin, 1960; Armstrong and McGehee, 1980) suggests that in homogeneous, well-mixed environments, species that compete for the same resource cannot coexist, and one species should finally take advantage over the others. Thus, while in many natural waters, nutrients and ligh ...
Chemotrophic Microbial Mats and Their Potential
... 2003; Kalanetra et al., 2005). Large filamentous sulfuroxidizing Thiothrix and ‘‘White Point vacuolate bacteria’’ can resemble marine Beggiatoa and can be found in similar habitats, though they are generally present as forms attached to hard substrates (Howarth et al., 1999; Kalanetra et al., 2004; ...
... 2003; Kalanetra et al., 2005). Large filamentous sulfuroxidizing Thiothrix and ‘‘White Point vacuolate bacteria’’ can resemble marine Beggiatoa and can be found in similar habitats, though they are generally present as forms attached to hard substrates (Howarth et al., 1999; Kalanetra et al., 2004; ...
Alaska SeaLife Center Guide to Marine Life
... All rights reserved. This document, Alaska Sealife Center Guide to Marine Life, and all materials herein are the property of the Alaska SeaLife Center and the authors. The only exceptions are copyrighted images and other materials owned by others, which are indicated in the Photographic Contribution ...
... All rights reserved. This document, Alaska Sealife Center Guide to Marine Life, and all materials herein are the property of the Alaska SeaLife Center and the authors. The only exceptions are copyrighted images and other materials owned by others, which are indicated in the Photographic Contribution ...
Use of hydrated lime to control Styela clava in the
... guidelines for the protection of aquatic life in marine environments (CCME 1999). Although the factsheet for pH was prepared in 1999 the guideline remains the same in 2016. These guidelines are science-based and, while determined using toxicity data, they recommend “safe” levels that are lower than ...
... guidelines for the protection of aquatic life in marine environments (CCME 1999). Although the factsheet for pH was prepared in 1999 the guideline remains the same in 2016. These guidelines are science-based and, while determined using toxicity data, they recommend “safe” levels that are lower than ...
Multiple modes of asexual reproduction by
... in Fig. 7). Secondary larvae retain the normal anteriorposterior polarity of the primary larvae. Although secondary larvae are initially asymmetrical about the anterior-posterior axis (with the preoral lobe being disproportionately large; Fig. 8), their posterior region presumably grows at an accele ...
... in Fig. 7). Secondary larvae retain the normal anteriorposterior polarity of the primary larvae. Although secondary larvae are initially asymmetrical about the anterior-posterior axis (with the preoral lobe being disproportionately large; Fig. 8), their posterior region presumably grows at an accele ...
Terminal Evaluation UNDP GEF project GEF 3138PIMS 3657
... (1) Achievement of objectives & planned results The project has achieved part of the objectives and planned results, as described before. The objective was to apply an ecosystem-based approach to fisheries management for biologically -globally significant and commercially important areas beyond nati ...
... (1) Achievement of objectives & planned results The project has achieved part of the objectives and planned results, as described before. The objective was to apply an ecosystem-based approach to fisheries management for biologically -globally significant and commercially important areas beyond nati ...
Marine biology
Marine biology is the scientific study of organisms in the ocean or other marine or brackish bodies of water. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather than on taxonomy. Marine biology differs from marine ecology as marine ecology is focused on how organisms interact with each other and the environment, while biology is the study of the organisms themselves.A large proportion of all life on Earth lives in the ocean. Exactly how large the proportion is unknown, since many ocean species are still to be discovered. The ocean is a complex three-dimensional world covering about 71% of the Earth's surface. The habitats studied in marine biology include everything from the tiny layers of surface water in which organisms and abiotic items may be trapped in surface tension between the ocean and atmosphere, to the depths of the oceanic trenches, sometimes 10,000 meters or more beneath the surface of the ocean. Specific habitats include coral reefs, kelp forests, seagrass meadows, the surrounds of seamounts and thermal vents, tidepools, muddy, sandy and rocky bottoms, and the open ocean (pelagic) zone, where solid objects are rare and the surface of the water is the only visible boundary. The organisms studied range from microscopic phytoplankton and zooplankton to huge cetaceans (whales) 30 meters (98 feet) in length.Marine life is a vast resource, providing food, medicine, and raw materials, in addition to helping to support recreation and tourism all over the world. At a fundamental level, marine life helps determine the very nature of our planet. Marine organisms contribute significantly to the oxygen cycle, and are involved in the regulation of the Earth's climate. Shorelines are in part shaped and protected by marine life, and some marine organisms even help create new land.Many species are economically important to humans, including food fish (both finfish and shellfish). It is also becoming understood that the well-being of marine organisms and other organisms are linked in very fundamental ways. The human body of knowledge regarding the relationship between life in the sea and important cycles is rapidly growing, with new discoveries being made nearly every day. These cycles include those of matter (such as the carbon cycle) and of air (such as Earth's respiration, and movement of energy through ecosystems including the ocean). Large areas beneath the ocean surface still remain effectively unexplored.