Understanding harmful algae in stratified systems
... great abundance and maturity. Retentive regions can act as incubators for phytoplankton blooms, including HABs, and can favor the establishment of thin layers (Jessup et al., 2009; McManus et al., 2008; Ryan et al., 2010). These locales also provide seed populations for subsequent blooms (Ryan et al ...
... great abundance and maturity. Retentive regions can act as incubators for phytoplankton blooms, including HABs, and can favor the establishment of thin layers (Jessup et al., 2009; McManus et al., 2008; Ryan et al., 2010). These locales also provide seed populations for subsequent blooms (Ryan et al ...
Armbrust.indd MH
... of magnitude in just a few days. Diatoms tend to dominate phytoplankton communities in well-mixed coastal and upwelling regions, as well as along the sea-ice edge, where sufficient light, inorganic nitrogen, phosphorus, silicon and trace elements are available to sustain their growth8. In polar envi ...
... of magnitude in just a few days. Diatoms tend to dominate phytoplankton communities in well-mixed coastal and upwelling regions, as well as along the sea-ice edge, where sufficient light, inorganic nitrogen, phosphorus, silicon and trace elements are available to sustain their growth8. In polar envi ...
Evolutionary ecology during the rise of dioxygen in the Earth`s
... Photolytic products, together with hydrogen and SO2 from arc volcanoes, provided potential metabolic energy sources in surface environments. These included shallow marine water, lakes, land and even clouds. Being able to tolerate slightly more sunlight than one’s competition was ultimately a selecti ...
... Photolytic products, together with hydrogen and SO2 from arc volcanoes, provided potential metabolic energy sources in surface environments. These included shallow marine water, lakes, land and even clouds. Being able to tolerate slightly more sunlight than one’s competition was ultimately a selecti ...
Evolutionary ecology during the rise of dioxygen in the Earth`s
... Photolytic products, together with hydrogen and SO2 from arc volcanoes, provided potential metabolic energy sources in surface environments. These included shallow marine water, lakes, land and even clouds. Being able to tolerate slightly more sunlight than one’s competition was ultimately a selecti ...
... Photolytic products, together with hydrogen and SO2 from arc volcanoes, provided potential metabolic energy sources in surface environments. These included shallow marine water, lakes, land and even clouds. Being able to tolerate slightly more sunlight than one’s competition was ultimately a selecti ...
Faber, Samantha_Saxitoxin and the induction of paralytic shellfish
... Saxitoxin is produced in large quantities during episodic Harmful TTX/kg body weight (Lewis, 2004). Thus, it takes two times the Algal Blooms (HABs), known as a “red tides” and affects a wide dosage of TTX to produce lethality in mice compared to a single range of marine organisms. Other HABs includ ...
... Saxitoxin is produced in large quantities during episodic Harmful TTX/kg body weight (Lewis, 2004). Thus, it takes two times the Algal Blooms (HABs), known as a “red tides” and affects a wide dosage of TTX to produce lethality in mice compared to a single range of marine organisms. Other HABs includ ...
THE EFFECT OF ARCHEAN OCEANS ON CYANOBACTERIA
... Banded-iron formations (BIFs) are geological structures often used to support a more than 400 million year delay between Earth’s oxidation and the evolution of oxygenic photosynthesis. BIFs are massive sedimentary deposits made from alternating layers of iron, specifically magnetite (Fe3O4) and hema ...
... Banded-iron formations (BIFs) are geological structures often used to support a more than 400 million year delay between Earth’s oxidation and the evolution of oxygenic photosynthesis. BIFs are massive sedimentary deposits made from alternating layers of iron, specifically magnetite (Fe3O4) and hema ...
The Possible Importance of Silicon in Marine Eutrophication
... zones. Diatoms grow very rapidly, have short lifetimes, are grazed heavily, and are rarely a nuisance. The other is the nondiatom ecosystem usually dominated by flagellates, including dinoflagellates, chrysophytes, chlorophytes and coccolithophoridae, though it also may contain large proportions of ...
... zones. Diatoms grow very rapidly, have short lifetimes, are grazed heavily, and are rarely a nuisance. The other is the nondiatom ecosystem usually dominated by flagellates, including dinoflagellates, chrysophytes, chlorophytes and coccolithophoridae, though it also may contain large proportions of ...
What are Phytoplankton?
... Phytoplankton are most abundant (yellow, high chlorophyll) in high latitudes and in upwelling zones along the equator and near coastlines. They are scarce in remote oceans (dark blue), where nutrient levels are low. This map shows the average chlorophyll concentration in the global oceans from July ...
... Phytoplankton are most abundant (yellow, high chlorophyll) in high latitudes and in upwelling zones along the equator and near coastlines. They are scarce in remote oceans (dark blue), where nutrient levels are low. This map shows the average chlorophyll concentration in the global oceans from July ...
The comparative estimation of phytoplanktonic, microphytobenthic
... benthic vs. planktonic production, only rough estimations have been published. The objectives of this paper are thus, - to provide a global estimation of the respective contributions of plankton, microbenthos and macrobenthos to the primary production of the oceans, and to point out the current limi ...
... benthic vs. planktonic production, only rough estimations have been published. The objectives of this paper are thus, - to provide a global estimation of the respective contributions of plankton, microbenthos and macrobenthos to the primary production of the oceans, and to point out the current limi ...
File - Warta MHS Science
... halves of the pillboxlike cell separate, the cell contents divide, and a new inner half is formed heterotrophically, either exclusively or as a for each pillbox. One daughter cell remains the same size as the parent; the other is smaller. supplement to photosynthesis, means that helping these organi ...
... halves of the pillboxlike cell separate, the cell contents divide, and a new inner half is formed heterotrophically, either exclusively or as a for each pillbox. One daughter cell remains the same size as the parent; the other is smaller. supplement to photosynthesis, means that helping these organi ...
Full text in pdf format
... the largest portion of the free-living bacteria present in our samples, also showed a very low DMS production rate (1 to 2 nM h-') at both stations. This suggests that the largest free-living bacteria made a relatively small contribution to DMS production in comparison with attached bacteria or phyt ...
... the largest portion of the free-living bacteria present in our samples, also showed a very low DMS production rate (1 to 2 nM h-') at both stations. This suggests that the largest free-living bacteria made a relatively small contribution to DMS production in comparison with attached bacteria or phyt ...
BIOGEOCHEMISTRY OF IRON IN SEAWATER
... through the oxidative decomposition and transformation of biogenic organic matter in mid-depth and deep waters. This process must be also responsible for the similarity in vertical distributions of nutrient, such as nitrate and phosphate, and dissolved Fe which were released through the remineraliza ...
... through the oxidative decomposition and transformation of biogenic organic matter in mid-depth and deep waters. This process must be also responsible for the similarity in vertical distributions of nutrient, such as nitrate and phosphate, and dissolved Fe which were released through the remineraliza ...
Marine phytoplankton play a critical role in regulating the earth`s
... carbon dioxide (CO2) that move into (yellow arrows) and out of (green arrows) the atmosphere and upper ocean, which exchange gases every six years or so. Plantlike organisms called phytoplankton play four critical roles in this cycle. These microscopic ocean dwellers annually incorporate about 50 bi ...
... carbon dioxide (CO2) that move into (yellow arrows) and out of (green arrows) the atmosphere and upper ocean, which exchange gases every six years or so. Plantlike organisms called phytoplankton play four critical roles in this cycle. These microscopic ocean dwellers annually incorporate about 50 bi ...
University of Groningen von Liebig`s Law of the Minimum and
... misinterpreted by his successors. BRAt,rOT(1899) took this one law out of its context and proposed that limitation by nitrogen is a dominant factor in plankton ecology, far beyond its original application to agriculture. This was opposed by NAmANSOrn~(1908) who suggested instead a dynamic balance of ...
... misinterpreted by his successors. BRAt,rOT(1899) took this one law out of its context and proposed that limitation by nitrogen is a dominant factor in plankton ecology, far beyond its original application to agriculture. This was opposed by NAmANSOrn~(1908) who suggested instead a dynamic balance of ...
A quantitative analysis of the direct and indirect costs of nitrogen
... rate increased with oxygen concentration. The sensitivity to oxygen manifests largely as a 'maintenance' effect, increasing overall carbohydrate consumption (Figure 1a) because the cell must be equally clear of oxygen even at very low growth and nitrogen fixation rates. Azotobacter encodes and expre ...
... rate increased with oxygen concentration. The sensitivity to oxygen manifests largely as a 'maintenance' effect, increasing overall carbohydrate consumption (Figure 1a) because the cell must be equally clear of oxygen even at very low growth and nitrogen fixation rates. Azotobacter encodes and expre ...
Canini N. D., Metillo E. B., 2017 Temporal changes in the
... study, net phytoplankton was recorded in decreasing order of abundance: diatoms > dinoflagellates > cyanobacteria. Diatom cells appeared as chain-forming, centric, zigzag colonies, elongated and solitary or united in a chain by spines. Some species were common in estuarine, marine, typical of tropic ...
... study, net phytoplankton was recorded in decreasing order of abundance: diatoms > dinoflagellates > cyanobacteria. Diatom cells appeared as chain-forming, centric, zigzag colonies, elongated and solitary or united in a chain by spines. Some species were common in estuarine, marine, typical of tropic ...
Summary and Conclusion
... zooplankton. Among the copepods, harpacticoid copepod Macrosetella gracilis forms the dominant one. Adults and larvae of this species were found attached to the Trichodesmium filaments. Among fish eggs and larvae in the zooplankton samples, eggs were more abundant than larvae. Presence of fish eggs ...
... zooplankton. Among the copepods, harpacticoid copepod Macrosetella gracilis forms the dominant one. Adults and larvae of this species were found attached to the Trichodesmium filaments. Among fish eggs and larvae in the zooplankton samples, eggs were more abundant than larvae. Presence of fish eggs ...
Conceptual models for the biogeochemical role of the photic zone
... (1997) to suggest that the difference between phytoplankton and bacterial affinity may not be as clear as hitherto assumed. We can estimate the specific affinity in natural populations from experimental data following the procedure suggested in Table 2. Using typical values from Villefranche Bay (no ...
... (1997) to suggest that the difference between phytoplankton and bacterial affinity may not be as clear as hitherto assumed. We can estimate the specific affinity in natural populations from experimental data following the procedure suggested in Table 2. Using typical values from Villefranche Bay (no ...
Case Study 6 Monitoring Phytoplankton Productivity from
... downwelling irradiance. The objective of this exercise is to estimate the light flux received by a unit volume of water from all directions, the so-called scalar irradiance, which is the quantity useful for photosynthesis. ...
... downwelling irradiance. The objective of this exercise is to estimate the light flux received by a unit volume of water from all directions, the so-called scalar irradiance, which is the quantity useful for photosynthesis. ...
primary production methods - Center for Microbial Oceanography
... ed as CH2 O. Carbon dioxide in sea water is found in several chemical forms which exchange quickly enough to be considered in aggregate as total CO2 (TCO2 ). In principle, photosynthesis can be quantiRed by measuring any of three light-dependent processes: (1) the increase in organic carbon; (2) the ...
... ed as CH2 O. Carbon dioxide in sea water is found in several chemical forms which exchange quickly enough to be considered in aggregate as total CO2 (TCO2 ). In principle, photosynthesis can be quantiRed by measuring any of three light-dependent processes: (1) the increase in organic carbon; (2) the ...
Accumulation of Th, Pb, U, and Ra in marine phytoplankton and its
... nuclides out of the euphotic zone would be dominated by zooplanklon and larger phytoplankton and hence would not be representative of the preponderance of marine phytoplankton. However, collection of sufficient quantities of pure phytoplankton from natural waters for radiochemical analysis is diffic ...
... nuclides out of the euphotic zone would be dominated by zooplanklon and larger phytoplankton and hence would not be representative of the preponderance of marine phytoplankton. However, collection of sufficient quantities of pure phytoplankton from natural waters for radiochemical analysis is diffic ...
Sampaga 1 A Comparison Between Megafaunal Presence and
... The deep sea is home to a variety of geological features such as abyssal plains, mid-ocean ridges, trenches, and submarine canyons. Barkley Canyon is a submarine canyon located off of the west continental margin of Vancouver Island, British Columbia. Submarine canyons can be formed via different pr ...
... The deep sea is home to a variety of geological features such as abyssal plains, mid-ocean ridges, trenches, and submarine canyons. Barkley Canyon is a submarine canyon located off of the west continental margin of Vancouver Island, British Columbia. Submarine canyons can be formed via different pr ...
measurements of primary production in coastal sea water using a
... unrealistically high, and undesirable temperature increases usually occur. Furthcrmorc, no precise “balance” of dissolved oxygen or carbon dioxide can be readily computed when there is a large surface area of water in contact with the atmosphere. The thin plastic tube experiment proposed by Margalef ...
... unrealistically high, and undesirable temperature increases usually occur. Furthcrmorc, no precise “balance” of dissolved oxygen or carbon dioxide can be readily computed when there is a large surface area of water in contact with the atmosphere. The thin plastic tube experiment proposed by Margalef ...
harmful algae news - Woods Hole Oceanographic Institution
... there were many microscopic organisms but the most abundant was C. taylorii (Photo 2b). The cells of this species are peculiar with a really “unusual” aspect, as already pointed out [8-9]. The identification was not easy because this species is typical of coral reefs and its presence in the Mediterr ...
... there were many microscopic organisms but the most abundant was C. taylorii (Photo 2b). The cells of this species are peculiar with a really “unusual” aspect, as already pointed out [8-9]. The identification was not easy because this species is typical of coral reefs and its presence in the Mediterr ...