Isotopic Tracers of the Marine Nitrogen Cycle: Present and Past
... The nitrogenase enzyme is both O2 sensitive and has a high requirement for Fe [4]. The relative demand as compared to non-N2 fixers, though, has been sharply revised downward to 4-fold [5]. Given the very low Fe concentrations found in the well-oxygenated open ocean of today and wellconserved structu ...
... The nitrogenase enzyme is both O2 sensitive and has a high requirement for Fe [4]. The relative demand as compared to non-N2 fixers, though, has been sharply revised downward to 4-fold [5]. Given the very low Fe concentrations found in the well-oxygenated open ocean of today and wellconserved structu ...
Services from the deep Steps towards valuation of deep sea goods
... enter into human well-being indirectly.4 They differ from regulating, provisioning, and cultural services in that their impacts on people are usually indirect, both physically and temporally, whereas changes in the other categories have relatively direct impacts on people. Examples of supporting ser ...
... enter into human well-being indirectly.4 They differ from regulating, provisioning, and cultural services in that their impacts on people are usually indirect, both physically and temporally, whereas changes in the other categories have relatively direct impacts on people. Examples of supporting ser ...
The impacts of high seas bottom trawl fisheries
... predators, and some mammalian and reptilian herbivores, provide exceptions to this rule. However where complex physical habitat provides safety, such as coastal rocky or coral reefs, more leisurely lifestyles are possible. Lifestyles in the deep ocean are often even slower. Deepwater species (those ...
... predators, and some mammalian and reptilian herbivores, provide exceptions to this rule. However where complex physical habitat provides safety, such as coastal rocky or coral reefs, more leisurely lifestyles are possible. Lifestyles in the deep ocean are often even slower. Deepwater species (those ...
The status of coral reefs and marine resources of Samoa
... prevented coral reef formations. The shallow and usually murky lagoons on the northem side of the islands (to 2 m depth) are often encircled by fringing reefs, which can extend seaward to 3 km. On the southern, windward shores the lagoons are 2-3 m deep and clearer. The reef systems around Samoa wer ...
... prevented coral reef formations. The shallow and usually murky lagoons on the northem side of the islands (to 2 m depth) are often encircled by fringing reefs, which can extend seaward to 3 km. On the southern, windward shores the lagoons are 2-3 m deep and clearer. The reef systems around Samoa wer ...
NGU Report 2006.067 Sediment composition and heavy
... modern sedimentation processes in the southern Barents Sea, including identification of main accumulation and erosion areas, sediment transport pathways and physical and geochemical sediment properties and their implications for marine habitats. This knowledge is required in order to forecast disper ...
... modern sedimentation processes in the southern Barents Sea, including identification of main accumulation and erosion areas, sediment transport pathways and physical and geochemical sediment properties and their implications for marine habitats. This knowledge is required in order to forecast disper ...
Overview and Summary of Recent Research into the Potential
... hydraulic, steam or diesel power) and dropped against the top of the pile, driving it into the substrate. This type of pile driving typically leads to the highest noise levels of any of the methods as impulsive acoustic energy is created upon impact, and radiates from the impact site through multipl ...
... hydraulic, steam or diesel power) and dropped against the top of the pile, driving it into the substrate. This type of pile driving typically leads to the highest noise levels of any of the methods as impulsive acoustic energy is created upon impact, and radiates from the impact site through multipl ...
Marine Reserves for the Mediterranean Sea
... The Mediterranean Sea is a rich and diverse environment, home to many unique species and important ecosystems. Being an enclosed sea, and the majority of the Mediterranean being beyond the control of any one country, it truly represents a shared resource - and a shared responsibility - for the regio ...
... The Mediterranean Sea is a rich and diverse environment, home to many unique species and important ecosystems. Being an enclosed sea, and the majority of the Mediterranean being beyond the control of any one country, it truly represents a shared resource - and a shared responsibility - for the regio ...
Furtive foes: algal viruses as potential invaders
... After introduction, successful viral invasions require access to a suitable host population because they cannot reproduce outside their host. The geographical range of potential host algae and the host range of the introduced virus are important for assessing the potential for invasion success. Theo ...
... After introduction, successful viral invasions require access to a suitable host population because they cannot reproduce outside their host. The geographical range of potential host algae and the host range of the introduced virus are important for assessing the potential for invasion success. Theo ...
Exploring the distance between nitrogen and
... 2006). There are also differences in the stoichiometry of different functional groups of organisms, where e.g. bacteria (Fagerbakke et al., 1996) tend to have a N : P ratio significantly lower than 16. Which element first becomes limiting, and how much of the secondary limiting element then remains ...
... 2006). There are also differences in the stoichiometry of different functional groups of organisms, where e.g. bacteria (Fagerbakke et al., 1996) tend to have a N : P ratio significantly lower than 16. Which element first becomes limiting, and how much of the secondary limiting element then remains ...
Future of the Ocean and its Seas: a non
... socio-economic consequences, will be determined by the scale of future CO2 emissions. Calcifying organisms, such as corals and molluscs, show greatest sensitivity to ocean acidification. However, biological responses are variable and interact with other environmental stressors. As a result, effects ...
... socio-economic consequences, will be determined by the scale of future CO2 emissions. Calcifying organisms, such as corals and molluscs, show greatest sensitivity to ocean acidification. However, biological responses are variable and interact with other environmental stressors. As a result, effects ...
Marine Reserves for the Mediterranean Sea
... The Mediterranean Sea is a rich and diverse environment, home to many unique species and important ecosystems. Being an enclosed sea, and the majority of the Mediterranean being beyond the control of any one country, it truly represents a shared resource - and a shared responsibility - for the regio ...
... The Mediterranean Sea is a rich and diverse environment, home to many unique species and important ecosystems. Being an enclosed sea, and the majority of the Mediterranean being beyond the control of any one country, it truly represents a shared resource - and a shared responsibility - for the regio ...
S C M A
... increasingly toward opportunities in federal offshore waters. The nation’s first commercial open ocean aquaculture operation began in 2001, when ownership of a public project in Hawaiian waters was transferred to a private firm. Other offshore aquaculture activities—most of which are in the pilot pr ...
... increasingly toward opportunities in federal offshore waters. The nation’s first commercial open ocean aquaculture operation began in 2001, when ownership of a public project in Hawaiian waters was transferred to a private firm. Other offshore aquaculture activities—most of which are in the pilot pr ...
Cell-free extracellular enzymatic activity is linked
... known about what happens once the enzymes are free in the marine environment, including information about their lifetimes. The few available studies on the EE lifetime, indicate a lifetime range between tens and hundreds of hours. Surface water EE lifetimes, when incubated at in situ temperature, ra ...
... known about what happens once the enzymes are free in the marine environment, including information about their lifetimes. The few available studies on the EE lifetime, indicate a lifetime range between tens and hundreds of hours. Surface water EE lifetimes, when incubated at in situ temperature, ra ...
the impact of dredging works in coastal waters
... 1991). Other studies suggest that corals themselves may be tolerant of short-term increases in siltation associated with dredging (Marszalek 1981, Brown et al. 1990) but that modification of community structure of other components of reef communities such as fish species are detectable after multiva ...
... 1991). Other studies suggest that corals themselves may be tolerant of short-term increases in siltation associated with dredging (Marszalek 1981, Brown et al. 1990) but that modification of community structure of other components of reef communities such as fish species are detectable after multiva ...
Chapter 36C. North Pacific Ocean
... The Pacific is the largest division of the World Ocean, at over 165 million km2, extending from the Arctic Ocean in the north to the Southern Ocean in the south (Figure 1). Along the western margin are several seas. The Strait of Malacca joins the Pacific and the Indian Oceans to the west, and the D ...
... The Pacific is the largest division of the World Ocean, at over 165 million km2, extending from the Arctic Ocean in the north to the Southern Ocean in the south (Figure 1). Along the western margin are several seas. The Strait of Malacca joins the Pacific and the Indian Oceans to the west, and the D ...
The Marine Debris Research, Prevention and Reduction Act: A
... can be reached in achieving effective prevention and reduction strategies. Finally, NOAA is responsible for increasing education and outreach to the public and other stakeholders in marine debris. The Coast Guard Program The Act establishes programs within the United States Coast Guard designed to h ...
... can be reached in achieving effective prevention and reduction strategies. Finally, NOAA is responsible for increasing education and outreach to the public and other stakeholders in marine debris. The Coast Guard Program The Act establishes programs within the United States Coast Guard designed to h ...
Post glacial rebounds measure the viscosity of the lithosphere
... Fennoscandia were the result of the removal of the ice sheet. Similar movements of the North American crust were reported by Bell in 1896 and by Gilbert in 1897. They concluded that warmer weather melted a great amount of ice on the earth’s surface, causing huge mass redistribution. The lithosphere ...
... Fennoscandia were the result of the removal of the ice sheet. Similar movements of the North American crust were reported by Bell in 1896 and by Gilbert in 1897. They concluded that warmer weather melted a great amount of ice on the earth’s surface, causing huge mass redistribution. The lithosphere ...
Age Determination of Marine Sediments in the Western North Pacific
... 5.2 The middle to the bottom layers of core 3bPC In general, almost identical ages were obtained by Asp chronology and δ18O chronology in the sediments from the layers below the surface. However, significant differences in the ages estimated by these two methods were also obvious at the depths of 66 ...
... 5.2 The middle to the bottom layers of core 3bPC In general, almost identical ages were obtained by Asp chronology and δ18O chronology in the sediments from the layers below the surface. However, significant differences in the ages estimated by these two methods were also obvious at the depths of 66 ...
Title Regulating Marine Scientific Research in the European Union
... surrender that status (http://www.isa.org.jm/files/documents/EN/16Sess/Assembly/ISBA16A-CRP1.pdf) In light of this, they would probably not accept that they have no active interest. As a side note, Korea has been arguing for years that the Group B list should be updated and people should reveal thei ...
... surrender that status (http://www.isa.org.jm/files/documents/EN/16Sess/Assembly/ISBA16A-CRP1.pdf) In light of this, they would probably not accept that they have no active interest. As a side note, Korea has been arguing for years that the Group B list should be updated and people should reveal thei ...
The dynamics of the marine nitrogen cycle across the last deglaciation
... rates in the Holocene [Hutchins et al., 2007]. Changes in water column denitrification are primarily affected by the observed increase in the extent of suboxia across the deglaciation [Jaccard and Galbraith, 2012], while for benthic denitrification, the changes in export production and the sea-level r ...
... rates in the Holocene [Hutchins et al., 2007]. Changes in water column denitrification are primarily affected by the observed increase in the extent of suboxia across the deglaciation [Jaccard and Galbraith, 2012], while for benthic denitrification, the changes in export production and the sea-level r ...
Contribution of the Black Sea observing system to ECOOP
... Space measurements are used for regular mapping the basin-scale distribution of the chlorophyll-a concentration and other parameters. However, the experience shows that the standard NASA products often have rather low accuracy for the Black Sea region. Careful analysis of the sea color data was carr ...
... Space measurements are used for regular mapping the basin-scale distribution of the chlorophyll-a concentration and other parameters. However, the experience shows that the standard NASA products often have rather low accuracy for the Black Sea region. Careful analysis of the sea color data was carr ...
Outlines of Holocene Geomorphology of Anatolia
... reason for every phase of human history to choose this place as settlement. The main focus of this study is the fundamentals of geomorphologic characteristics of Anatolia in the Holocene Era. This geomorphologic character has always been in constant change and development with both tectonic and volc ...
... reason for every phase of human history to choose this place as settlement. The main focus of this study is the fundamentals of geomorphologic characteristics of Anatolia in the Holocene Era. This geomorphologic character has always been in constant change and development with both tectonic and volc ...
GEO/OC 103 Exploring the Deep… Lab 7
... A key indicator of the ocean’s health is primary productivity, or the rate at which new organic material is produced through photosynthesis (Figure at left). Photosynthesis is the process by which plant cells containing the green pigment chlorophyll use sunlight to convert water and carbon dioxide ...
... A key indicator of the ocean’s health is primary productivity, or the rate at which new organic material is produced through photosynthesis (Figure at left). Photosynthesis is the process by which plant cells containing the green pigment chlorophyll use sunlight to convert water and carbon dioxide ...
Raised beach
A raised beach, marine terrace, or perched coastline is an emergent coastal landform. Raised beaches and marine terraces are beaches or wave-cut platforms raised above the shore line by a relative fall in the sea level.Around the world, a combination of tectonic coastal uplift and Quaternary sea-level fluctuations has resulted in the formation of marine terrace sequences, most of which were formed during separate interglacial highstands that can be correlated to Marine Oxygen Isotopic Stages (MIS) (for example, Johnson and Libbey (1997).A marine terrace commonly retains a shoreline angle or inner edge, the slope inflection between the marine abrasion platform and the associated paleo sea-cliff. The shoreline angle represents the maximum shoreline of a transgression and therefore a paleo sea level.