![Oxygen Isotope Stratigraphy of the Oceans](http://s1.studyres.com/store/data/015260240_1-ef1ff15589548a02815413972735c6a8-300x300.png)
Oxygen Isotope Stratigraphy of the Oceans
... Emiliani started the measurements of oxygen isotopes from calcite shells of foraminifera. The foraminifera are unicellular organisms floating in the water column (planktonic species) or living on the seafloor (benthic species) whose calcite tests accumulate in oceanic sediments after their death. An ...
... Emiliani started the measurements of oxygen isotopes from calcite shells of foraminifera. The foraminifera are unicellular organisms floating in the water column (planktonic species) or living on the seafloor (benthic species) whose calcite tests accumulate in oceanic sediments after their death. An ...
Pacific Regional Oceans Policy - Pacific Islands Forum Secretariat
... contain high biological diversity that has sustained the lives of Pacific Island communities since first settlement. It contains the most extensive coral reefs in the world, globally important fisheries, significant seabed mineral resources and high number of threatened species. These ecosystems may ...
... contain high biological diversity that has sustained the lives of Pacific Island communities since first settlement. It contains the most extensive coral reefs in the world, globally important fisheries, significant seabed mineral resources and high number of threatened species. These ecosystems may ...
W H O I
... the Cold War brought a welcome relaxation of international tension, but also prompted a steady decline of oceanographic research sponsored by the Office of Naval Research. This loss of support has been most acute in two areas: Instrument development, which often requires up to 10 years of sustained ...
... the Cold War brought a welcome relaxation of international tension, but also prompted a steady decline of oceanographic research sponsored by the Office of Naval Research. This loss of support has been most acute in two areas: Instrument development, which often requires up to 10 years of sustained ...
Intraseasonal Variability in the South Equatorial Current of the East
... altimeter sea level anomaly shows two regions of large magnitude (Fig. 2): one is coastally trapped along the southern Sumatra–Java coast, the other is offshore centered at 118–128S, 1108E, extending in the east–west direction from 1008 to 1208E. South of 188S, there is an isolated region with sea l ...
... altimeter sea level anomaly shows two regions of large magnitude (Fig. 2): one is coastally trapped along the southern Sumatra–Java coast, the other is offshore centered at 118–128S, 1108E, extending in the east–west direction from 1008 to 1208E. South of 188S, there is an isolated region with sea l ...
1 2 Fifteen years of ocean observations with the global Argo array 3
... migration of the source region due to regional warming. The data availability in this region (including Argo and ...
... migration of the source region due to regional warming. The data availability in this region (including Argo and ...
Bacteria-organic matter coupling and its significance for oceanic
... seasonal cycles. What then is the relevant time frame for averaging PP and BCD to decide whether a system is coupled or uncoupled? Another problem is that the concept of coupling implies an intimacy between the primary and bacterial secondary productivity, which may not exist. There may be situation ...
... seasonal cycles. What then is the relevant time frame for averaging PP and BCD to decide whether a system is coupled or uncoupled? Another problem is that the concept of coupling implies an intimacy between the primary and bacterial secondary productivity, which may not exist. There may be situation ...
Post-glacial flooding of the Beringia Land Bridge dated to 11,000 cal
... ages are calibrated using the approach as for Core 2-PC1 described above. One of two dates at 417 cm depth is, however, clearly too old when compared to the other radiocarbon samples (Table 1; Fig. 3B). This date is considered to have been derived from a reworked shell and therefore treated as an ou ...
... ages are calibrated using the approach as for Core 2-PC1 described above. One of two dates at 417 cm depth is, however, clearly too old when compared to the other radiocarbon samples (Table 1; Fig. 3B). This date is considered to have been derived from a reworked shell and therefore treated as an ou ...
Dynamics of potentially harmful phytoplankton in a semi
... In the Arabian Sea (including the Sea of Oman), increased occurrence of coastal HABs caused by dinoflagellates (e.g., Ceratium spp., Karenia spp., and Noctiluca scintillans) has taken place since 1976 (Al-Gheilani et al. 2011). Noctiluca scintillans appears responsible for >50% of HABs, causing fish ...
... In the Arabian Sea (including the Sea of Oman), increased occurrence of coastal HABs caused by dinoflagellates (e.g., Ceratium spp., Karenia spp., and Noctiluca scintillans) has taken place since 1976 (Al-Gheilani et al. 2011). Noctiluca scintillans appears responsible for >50% of HABs, causing fish ...
OFR 89-92
... by workers in the field on about two dozen sites worldwide. These studies indicate that, given the right circumstances, submarine disposal can be preferred over on-land disposal from an environmental perspective. The most complete set of environmental assessment data is the twenty-year record at the ...
... by workers in the field on about two dozen sites worldwide. These studies indicate that, given the right circumstances, submarine disposal can be preferred over on-land disposal from an environmental perspective. The most complete set of environmental assessment data is the twenty-year record at the ...
spatiotemporal features of coastal waters in southwest finland
... In coastal waters marine and fresh water characteristics may alternate, and physicochemical water properties interact with the living environment accordingly (Gasiῡnaitė et al. 2005, Hoikkala 2012, Kowalczuk 1999). Fresh waters carry substances filtrated through the natural environment and human act ...
... In coastal waters marine and fresh water characteristics may alternate, and physicochemical water properties interact with the living environment accordingly (Gasiῡnaitė et al. 2005, Hoikkala 2012, Kowalczuk 1999). Fresh waters carry substances filtrated through the natural environment and human act ...
Navigating the Future - III - European Science Foundation
... local, national, regional and global levels, science cannot operate in isolation but will need to integrate more fully a response from society at large. There must also be changes in the way we regulate marine activities, in our social goals and our attitudes to ocean governance. If we are to make t ...
... local, national, regional and global levels, science cannot operate in isolation but will need to integrate more fully a response from society at large. There must also be changes in the way we regulate marine activities, in our social goals and our attitudes to ocean governance. If we are to make t ...
The culturable mycobiota of Flabellia petiolata: first
... bioactive secondary metabolites, previously attributed to the host [9, 10]. Despite algal flora dominates marine habitats in temperate regions (9,200-12,500 described seaweeds), relatively few species have been investigated for the presence of an associated mycobiota; consequently further isolation ...
... bioactive secondary metabolites, previously attributed to the host [9, 10]. Despite algal flora dominates marine habitats in temperate regions (9,200-12,500 described seaweeds), relatively few species have been investigated for the presence of an associated mycobiota; consequently further isolation ...
Abrupt Ocean Anoxia During the Late Ordovician Mass Extinction
... There have been two major increases in marine biodiversity during the Phanerozoic, the first during the early Paleozoic and the second during the Mesozoic (Sheehan, 2001a; Stanley, 2007; Servais and Owen, 2010). The early Paleozoic expansion in marine biodiversity consists of the “Cambrian Explosion ...
... There have been two major increases in marine biodiversity during the Phanerozoic, the first during the early Paleozoic and the second during the Mesozoic (Sheehan, 2001a; Stanley, 2007; Servais and Owen, 2010). The early Paleozoic expansion in marine biodiversity consists of the “Cambrian Explosion ...
Marine science and ocean services for development: Unesco/IOC
... projects would , it is proposed, be funded by UNDP, the financing system envisaged in the Vienna Plan of Action and other international and national sources, acting singly, collectively, or through a joint fund to be established. Special arrangements are needed for small states, particularly island ...
... projects would , it is proposed, be funded by UNDP, the financing system envisaged in the Vienna Plan of Action and other international and national sources, acting singly, collectively, or through a joint fund to be established. Special arrangements are needed for small states, particularly island ...
Radiocarbon dating of late Quaternary sediments: reservoir
... photosynthesis and the food chain. Radioactive carbon dioxide 14CO2 being indistinguishable from other forms of CO2. 14C activities of most terrestrial living organisms are therefore in equilibrium with that in the atmosphere, through continuous exchange of 14C by photosynthesis or food intake and r ...
... photosynthesis and the food chain. Radioactive carbon dioxide 14CO2 being indistinguishable from other forms of CO2. 14C activities of most terrestrial living organisms are therefore in equilibrium with that in the atmosphere, through continuous exchange of 14C by photosynthesis or food intake and r ...
IV. Review of previous analysis of options for preventing and
... Page 4 the ocean through openings in the seafloor (CBD 2005a; NOAA Vents Programme n.d.). Vents are also characterized by high acidity, extreme salinity and high concentrations of metals and chemical compounds such as sulfur, hydrogen and methane on which microorganisms at the lower trophic levels o ...
... Page 4 the ocean through openings in the seafloor (CBD 2005a; NOAA Vents Programme n.d.). Vents are also characterized by high acidity, extreme salinity and high concentrations of metals and chemical compounds such as sulfur, hydrogen and methane on which microorganisms at the lower trophic levels o ...
Quality Status Report 2000 - QSR 2010
... intervals joint assessments of the quality status of the marine environment and of its development, for the maritime area covered by the Convention. These assessments should also evaluate the effectiveness of measures taken or planned for the protection of the marine environment, and identify priori ...
... intervals joint assessments of the quality status of the marine environment and of its development, for the maritime area covered by the Convention. These assessments should also evaluate the effectiveness of measures taken or planned for the protection of the marine environment, and identify priori ...
An Overview of the Bathymetry and Geomorphology of the Tanzania
... The seafloor in the study area (Fig. 1) appears to be gently inclined northeastward with the depth at northeast reaching slightly more than 4200 m. The seafloor can be divided into three bathymetrical zones based on the changes of the slope of the seafloor. The steep seafloor with depths up to 500 m ...
... The seafloor in the study area (Fig. 1) appears to be gently inclined northeastward with the depth at northeast reaching slightly more than 4200 m. The seafloor can be divided into three bathymetrical zones based on the changes of the slope of the seafloor. The steep seafloor with depths up to 500 m ...
Benthic invertebrate communities
... Geographical coverage: All regions of the Baltic Sea except for the Gulf of Riga, the western Gotland Basin, the Danish Straits and Kattegat. Temporal coverage: From 1964-65 to 2007. Methodology and frequency of data collection: Sampling and analyses are made according to the guidelines for the HELC ...
... Geographical coverage: All regions of the Baltic Sea except for the Gulf of Riga, the western Gotland Basin, the Danish Straits and Kattegat. Temporal coverage: From 1964-65 to 2007. Methodology and frequency of data collection: Sampling and analyses are made according to the guidelines for the HELC ...
Vertical distribution of marine cyanobacteria
... The vertical distributions of the unicellular cyanobacteria Synechococcus were studied in several highly contrasting seas: the Black Sea, Sea of Marmara, Aegean Sea, and Mediterranean Sea. Cell abundances varied significantly on both vertical and horizontal scales in all physically and spatially disc ...
... The vertical distributions of the unicellular cyanobacteria Synechococcus were studied in several highly contrasting seas: the Black Sea, Sea of Marmara, Aegean Sea, and Mediterranean Sea. Cell abundances varied significantly on both vertical and horizontal scales in all physically and spatially disc ...
Physical Oceanographic Assessment of the Nautilus EIS for the
... essential to assess the level of risk that human and ecological communities are likely to face from metals and other contaminants associated with the Solwara 1 mining operation. Of particular concern is whether upwelling and currents could carry pollutants up out of the deep sea or from spills and l ...
... essential to assess the level of risk that human and ecological communities are likely to face from metals and other contaminants associated with the Solwara 1 mining operation. Of particular concern is whether upwelling and currents could carry pollutants up out of the deep sea or from spills and l ...
1 Central Arctic Ocean paleoceanography from ~50 ka to present, 1
... estimated to be ~45-42 ka in age. A similar peak of lower but still significant abundance also occurs in sediments dated between 42 and 35 ka, and this is consistent with other cores on the Mendeleev Ridge and particularly on the ...
... estimated to be ~45-42 ka in age. A similar peak of lower but still significant abundance also occurs in sediments dated between 42 and 35 ka, and this is consistent with other cores on the Mendeleev Ridge and particularly on the ...
Western Australian Integrated Marine Observing System (WAIMOS
... Marine environments of northern and western Australia are strongly influenced by oceanic boundary currents off the coast. The longest and most unique of these is the Leeuwin Current that originates from the northern region of Australia, extends over 8000km to the south, influencing more than 2/3 of ...
... Marine environments of northern and western Australia are strongly influenced by oceanic boundary currents off the coast. The longest and most unique of these is the Leeuwin Current that originates from the northern region of Australia, extends over 8000km to the south, influencing more than 2/3 of ...
Fifteen years of ocean observations with the global Argo array
... migration of the source region due to regional warming. The data availability in this region (including Argo and ...
... migration of the source region due to regional warming. The data availability in this region (including Argo and ...
iaea tecdoc series - IAEA Publications
... record of past waste dumping and of accidents and losses at sea involving radioactive material, based on official reports, for use as an information base for the assessment of the impact of radionuclide sources in the marine environment, when deemed necessary. To respond to the request of the London ...
... record of past waste dumping and of accidents and losses at sea involving radioactive material, based on official reports, for use as an information base for the assessment of the impact of radionuclide sources in the marine environment, when deemed necessary. To respond to the request of the London ...
Marine pollution
![](https://commons.wikimedia.org/wiki/Special:FilePath/Obvious_water_pollution.jpeg?width=300)
Marine pollution occurs when harmful, or potentially harmful, effects result from the entry into the ocean of chemicals, particles, industrial, agricultural and residential waste, noise, or the spread of invasive organisms. Most sources of marine pollution are land based. The pollution often comes from nonpoint sources such as agricultural runoff, wind-blown debris and dust. Nutrient pollution, a form of water pollution, refers to contamination by excessive inputs of nutrients. It is a primary cause of eutrophication of surface waters, in which excess nutrients, usually nitrogen or phosphorus, stimulate algae growth.Many potentially toxic chemicals adhere to tiny particles which are then taken up by plankton and benthos animals, most of which are either deposit or filter feeders. In this way, the toxins are concentrated upward within ocean food chains. Many particles combine chemically in a manner highly depletive of oxygen, causing estuaries to become anoxic.When pesticides are incorporated into the marine ecosystem, they quickly become absorbed into marine food webs. Once in the food webs, these pesticides can cause mutations, as well as diseases, which can be harmful to humans as well as the entire food web.Toxic metals can also be introduced into marine food webs. These can cause a change to tissue matter, biochemistry, behaviour, reproduction, and suppress growth in marine life. Also, many animal feeds have a high fish meal or fish hydrolysate content. In this way, marine toxins can be transferred to land animals, and appear later in meat and dairy products.