Plankton biodiversity of the North Atlantic: changing patterns
... reassembly a natural consequence of climatic change? Will community function alter with climate change? Will there be an imbalance in system trophodynamics? In some systems, regime shifts (Reid et al, 2001), have been documented. These are characterized by large scale abrupt changes in the ecosystem ...
... reassembly a natural consequence of climatic change? Will community function alter with climate change? Will there be an imbalance in system trophodynamics? In some systems, regime shifts (Reid et al, 2001), have been documented. These are characterized by large scale abrupt changes in the ecosystem ...
KS4 Earth and Atmosphere 4795KB
... • During the first billion years there was intense volcanic activity, which produced the early atmosphere. This would have contained large quantities of carbon dioxide (CO2) and water vapour. Methane (CH4) and ammonia (NH3) are thought to Venus have also been present. • This is rather like the atmos ...
... • During the first billion years there was intense volcanic activity, which produced the early atmosphere. This would have contained large quantities of carbon dioxide (CO2) and water vapour. Methane (CH4) and ammonia (NH3) are thought to Venus have also been present. • This is rather like the atmos ...
Sediments - cloudfront.net
... punching through up to 25 m (80 feet) of sediment and returning an intact plug of material Stratigraphy- The branch of geology that deals with the definitions and description of natural divisions of rocks; specifically, the analysis of rock strata. Paleoceanography- The study of the ocean’s past. ...
... punching through up to 25 m (80 feet) of sediment and returning an intact plug of material Stratigraphy- The branch of geology that deals with the definitions and description of natural divisions of rocks; specifically, the analysis of rock strata. Paleoceanography- The study of the ocean’s past. ...
CH04_Outline
... Seawater undersaturated with silica Siliceous ooze commonly associated with high biologic productivity in surface ocean ...
... Seawater undersaturated with silica Siliceous ooze commonly associated with high biologic productivity in surface ocean ...
Oceanic Crust
... The Lithosphere is more viscous (fluid) than any other part of the mantle. This is what the crustal plates are sitting on. Due to its elasticity and convection we have plate ...
... The Lithosphere is more viscous (fluid) than any other part of the mantle. This is what the crustal plates are sitting on. Due to its elasticity and convection we have plate ...
Deep sea, the last great unexplored earth - Archimer
... Institution, Woods Hole, MA 02543, USA) added that the high taxonomic diversity observed at deepsea vents is not necessarily reflected in functional diversity, such that different taxa can perform similar functions using homologous pathways, but being optimally adapted to slightly different environm ...
... Institution, Woods Hole, MA 02543, USA) added that the high taxonomic diversity observed at deepsea vents is not necessarily reflected in functional diversity, such that different taxa can perform similar functions using homologous pathways, but being optimally adapted to slightly different environm ...
Tectonic Snacks
... model, the frosting represents the asthenosphere, the viscous layer on which Earth’s plates ride. The plates in this model are represented by the fruit roll ups (oceanic crust which is thin and dense) and graham crackers (continental crust which is thick but less dense). ...
... model, the frosting represents the asthenosphere, the viscous layer on which Earth’s plates ride. The plates in this model are represented by the fruit roll ups (oceanic crust which is thin and dense) and graham crackers (continental crust which is thick but less dense). ...
Ammonia concentrations in nutrient deplete oceanic waters
... In wide areas of the world’s oceans phytoplankton productivity is limited by the availability of nitrogen. The surface waters and the surface mixed layers of many temperate oceans, eg the Atlantic, typically are greatly depleted of dissolved inorganic nitrogen species (ammonia, nitrate and nitrite ...
... In wide areas of the world’s oceans phytoplankton productivity is limited by the availability of nitrogen. The surface waters and the surface mixed layers of many temperate oceans, eg the Atlantic, typically are greatly depleted of dissolved inorganic nitrogen species (ammonia, nitrate and nitrite ...
GEO/OC 103 Exploring the Deep… Lab 2
... The earliest forms of life — blue-green algae — developed in the oceans, where water offered protection from the harmful ultraviolet (UV) radiation that penetrated Earth’s early atmosphere. Through the process of photosynthesis, these organisms produced their own food using carbon dioxide, water, and ...
... The earliest forms of life — blue-green algae — developed in the oceans, where water offered protection from the harmful ultraviolet (UV) radiation that penetrated Earth’s early atmosphere. Through the process of photosynthesis, these organisms produced their own food using carbon dioxide, water, and ...
2008, final Lecture 12 deep sea and hydro vents
... • Chimneys top some hydrothermal vents. – These smokestacks are formed from dissolved metals that precipitate out (form into particles) when the superhot vent water meets the surrounding deep ocean water, which is only a few degrees above freezing. • Black smokers are the hottest of the vents. They ...
... • Chimneys top some hydrothermal vents. – These smokestacks are formed from dissolved metals that precipitate out (form into particles) when the superhot vent water meets the surrounding deep ocean water, which is only a few degrees above freezing. • Black smokers are the hottest of the vents. They ...
APPLICATION FOR CONSENT TO CONDUCT MARINE SCIENTIFIC
... kHz) and 4 currentmeter lines fully equiped with currentmeters and temperature sensors, respectively 23, 48, 51, 58, 69 nm off the coast around 60°N, that is at nominal depth of 170, 500, 1000, 1700, and 1900 m. The moored instrument within its protection metal-frame is about 1m high above the botto ...
... kHz) and 4 currentmeter lines fully equiped with currentmeters and temperature sensors, respectively 23, 48, 51, 58, 69 nm off the coast around 60°N, that is at nominal depth of 170, 500, 1000, 1700, and 1900 m. The moored instrument within its protection metal-frame is about 1m high above the botto ...
Unit Lesson Plan—Ocean`s Deadliest Catch Duu-wat cha Si`~s-xu
... advances in technology, drifters now provide researchers with information about ...
... advances in technology, drifters now provide researchers with information about ...
PART `C`
... This Test Booklet will contain 150 (20 Part `A‟+50 Part `B+80 Part „C‟) Multiple Choice Questions (MCQs). Candidates are required to answer 15 in part „A‟, 35 in Part „B‟ and 25 questions in Parts „C‟ respectively (No. of question to attempt may vary from exam to exam). In case any candidate answers ...
... This Test Booklet will contain 150 (20 Part `A‟+50 Part `B+80 Part „C‟) Multiple Choice Questions (MCQs). Candidates are required to answer 15 in part „A‟, 35 in Part „B‟ and 25 questions in Parts „C‟ respectively (No. of question to attempt may vary from exam to exam). In case any candidate answers ...
Studying the Ocean Biosphere - USF College of Marine Science
... 4) Now that we have our hypothesis, an experiment must be designed and performed using controlled conditions to test the hypothesis. When scientists perform experiments, they are careful to manipulate or change only one condition (the independent variable) at a time. All other conditions (the depen ...
... 4) Now that we have our hypothesis, an experiment must be designed and performed using controlled conditions to test the hypothesis. When scientists perform experiments, they are careful to manipulate or change only one condition (the independent variable) at a time. All other conditions (the depen ...
Bathymetry: Features and Hypsography - COLORS
... must also be evaluated in terms of tidal currents driven by the gravitational influence of the moon that can change bathymetry on hourly time scales. In a little over a century, the vast underwater landscapes from large- to small-scale features have been revealed, and this knowledge has contributed ...
... must also be evaluated in terms of tidal currents driven by the gravitational influence of the moon that can change bathymetry on hourly time scales. In a little over a century, the vast underwater landscapes from large- to small-scale features have been revealed, and this knowledge has contributed ...
The Oceanic Phosphorus Cycle
... stimulates excessive growth (algal bloom), which then reduces the dissolved oxygen in the water when the organic material decomposes. This reduction in oxygen levels (hypoxia) can result in the death of other organisms in the ecosystem. Indeed, it has been documented that nutrient loads entering the ...
... stimulates excessive growth (algal bloom), which then reduces the dissolved oxygen in the water when the organic material decomposes. This reduction in oxygen levels (hypoxia) can result in the death of other organisms in the ecosystem. Indeed, it has been documented that nutrient loads entering the ...
printer-friendly version
... The circulation of the oceans is affected by variations in atmospheric circulation. Surface currents are driven by the force of the wind pushing on the ocean surface. The frictional drag of the wind on the surface layer of the ocean creates currents. Conversely, because of their ability to store hug ...
... The circulation of the oceans is affected by variations in atmospheric circulation. Surface currents are driven by the force of the wind pushing on the ocean surface. The frictional drag of the wind on the surface layer of the ocean creates currents. Conversely, because of their ability to store hug ...
Post-Rift Deformation of Passive Margins AGU Fall Meeting 2005
... These observations suggest that mantle upwelling processes continue to effect passive margins long after continental rifting and the onset of sea-floor spreading. It is well known that the rate of upwelling varies after rifting, as seen in ocean floor ages. The lateral flow of mantle away from the m ...
... These observations suggest that mantle upwelling processes continue to effect passive margins long after continental rifting and the onset of sea-floor spreading. It is well known that the rate of upwelling varies after rifting, as seen in ocean floor ages. The lateral flow of mantle away from the m ...
Anoxic event
Oceanic anoxic events or anoxic events (Anoxia conditions) refer to intervals in the Earth's past where portions of oceans become depleted in oxygen (O2) at depths over a large geographic area. During some of these events, euxinia develops - euxinia refers to anoxic waters that contain H2S hydrogen sulfide. Although anoxic events have not happened for millions of years, the geological record shows that they happened many times in the past. Anoxic events coincide with several mass extinctions and may contribute to these events. These mass extinctions include some that geobiologists use as time markers in biostratigraphic dating. It is believed oceanic anoxic events are strongly linked to slowing of ocean circulation, climatic warming and elevated levels of greenhouse gases. Enhanced volcanism (through the release of CO2 and other greenhouse gases) is the proposed central external trigger for the development of these events.