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Seawater, or salt water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5%. This means that every kilogram of seawater has approximately 35 grams (1.2 oz) of dissolved salts. The average density at the surface is 1.025 kg/L. Seawater is denser than both fresh water and pure water because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases. At typical salinity, it freezes at about −2 °C (28 °F). The coldest seawater still in the liquid state ever recorded was found in 2010, in a stream under an Antarctic glacier: the measured temperature was −2.6 °C (27.3 °F). Seawater pH is typically limited to a range between 7.5 and 8.4. However, there is no universally accepted reference pH-scale for seawater and the difference between measurements based on different reference scales may be up to 0.14 units.
The seaside sparrow is an American sparrow.
Marinobacter is a genus of bacteria found in sea water. They are also found in a variety of salt lakes. A number of strains and species can degrade hydrocarbons. The species involved in hydrocarbon degradation include M. alkaliphilus, M. arcticus, M. hydrocarbonoclasticus, M. maritimus & M. squalenivorans.
In taxonomy, Sulfitobacter is a genus of the Rhodobacteraceae.
Nitrosopumilus maritimus is an extremely common archaeon living in seawater. It is the first member of the Group 1a Nitrososphaerota to be isolated in pure culture. Gene sequences suggest that the Group 1a Nitrososphaerota are ubiquitous with the oligotrophic surface ocean and can be found in most non-coastal marine waters around the planet. It is one of the smallest living organisms at 0.2 micrometers in diameter. Cells in the species N. maritimus are shaped like peanuts and can be found both as individuals and in loose aggregates. They oxidize ammonia to nitrite and members of N. maritimus can oxidize ammonia at levels as low as 10 nanomolar, near the limit to sustain its life. Archaea in the species N. maritimus live in oxygen-depleted habitats. Oxygen needed for ammonia oxidation might be produced by novel pathway which generates oxygen and dinitrogen. N. maritimus is thus among organisms which are able to produce oxygen in dark.
N. maritimus may refer to:
Psychrobacter maritimus is a Gram-negative, aerobic oxidase- and catalase-positive, nonpigmented, non-spore-forming, nonmotile bacterium of the genus Psychrobacter, which was isolated from coastal sea ice and sediments of the Sea of Japan and in Russia.
Marinobacter maritimus is a Gram-negative, psychrotolerant and motile bacterium from the genus of Marinobacter which has been isolated from sea water near the Kerguelen islands.
Tenacibaculum is a Gram-negative and motile bacterial genus from the family of Flavobacteriaceae.
Catenovulum is a bacteria genus from the family of Alteromonadaceae.
Cognatishimia is a Gram-negative and aerobic genus of bacteria from the family of Rhodobacteraceae with one known species. Cognatishimia maritima has been isolated from sea water near Gheje Island in Korea.
Pacificibacter maritimus is a Gram-negative, aerobic and non-motile bacterium from the genus of Pacificibacter which has been isolated from sandy sediments from the Sea of Japan.
Ursidibacter maritimus is a bacterium from the genus of Ursidibacter which has been isolated from the oral cavity of a polar bear from Greenland.
Lutibacter maritimus is a Gram-negative, aerobic and non-motile bacterium from the genus of Lutibacter which has been isolated from tidal flat sediments from Saemankum in Korea.
Mesonia maritima is a Gram-negative, aerobic and rod-shaped bacterium from the genus of Mesonia which has been isolated from seawater from the South Sea.
The Temperatibacteraceae are a family of bacteria.
Cerasicoccus frondis is a Gram-negative, chemoheterotrophic bacterium from the genus of Cerasicoccus which has been isolated from seawater.
Alteripontixanthobacter is a genus of bacteria from the family of Erythrobacteraceae.
Seonamhaeicola maritimus is a Gram-negative, facultatively anaerobic, rod-shaped and non-motile bacterium from the genus of Seonamhaeicola which has been isolated from marine sediments from the coast of Weihai.
Phocavis is an extinct genus of flightless seabird, belonging to the family Plotopteridae, and distantly related with modern cormorants. Its fossils, found in the Keasey Formation in Oregon, are dated from the Late Eocene.
References
- 1 2 "Species: Alteripontixanthobacter maritimus". LPSN.DSMZ.de.
- 1 2 Kang, Heeyoung; Kim, Haneul; Joh, Kiseong (1 June 2019). "Altererythrobacter maritimus sp. nov., isolated from seawater". International Journal of Systematic and Evolutionary Microbiology. 69 (6): 1566–1572. doi: 10.1099/ijsem.0.003336 . PMID 30856089. S2CID 75137488.
- 1 2 "Alteripontixanthobacter maritimus". www.uniprot.org.