44 relations: Anoxic event, Bacteria, Baltic Sea, Black Sea, Canada, Cariaco Basin, Caspian Sea, Cyanobacteria, Dead zone (ecology), Denitrification, Denmark, Eastern Mediterranean, Eutrophication, Fjord, Fossil, Global warming, Gotland Basin, Groundwater, Gulf of Mexico, Hood Canal, Hypersaline lake, Hypoxia (environmental), International Union for Conservation of Nature, L'Atalante basin, Lagerstätte, Lake stratification, Levantine Sea, Mariager Fjord, Meromictic lake, Mortichnia, Nitrate, Orca Basin, Oxygen saturation, Permian–Triassic extinction event, Purple sulfur bacteria, Redox, Saanich Inlet, Sulfate, Sulfide, Sweden, Thermocline, Vancouver Island, Venezuela, Water stagnation.
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.
Bacteria (common noun bacteria, singular bacterium) is a type of biological cell.
The Baltic Sea is a sea of the Atlantic Ocean, enclosed by Scandinavia, Finland, Estonia, Latvia, Lithuania, Russia, Poland, Germany and the North and Central European Plain.
The Black Sea is a body of water and marginal sea of the Atlantic Ocean between Eastern Europe, the Caucasus, and Western Asia.
Canada is a country located in the northern part of North America.
The Cariaco Basin lies off the north central coast of Venezuela and forms the Gulf of Cariaco.
The Caspian Sea is the largest enclosed inland body of water on Earth by area, variously classed as the world's largest lake or a full-fledged sea.
Cyanobacteria, also known as Cyanophyta, are a phylum of bacteria that obtain their energy through photosynthesis, and are the only photosynthetic prokaryotes able to produce oxygen.
Dead zones are hypoxic (low-oxygen) areas in the world's oceans and large lakes, caused by "excessive nutrient pollution from human activities coupled with other factors that deplete the oxygen required to support most marine life in bottom and near-bottom water.
Denitrification is a microbially facilitated process where nitrate is reduced and ultimately produces molecular nitrogen (N2) through a series of intermediate gaseous nitrogen oxide products.
Denmark (Danmark), officially the Kingdom of Denmark,Kongeriget Danmark,.
The Eastern Mediterranean denotes the countries geographically to the east of the Mediterranean Sea (Levantine Seabasin).
Eutrophication (from Greek eutrophos, "well-nourished"), or hypertrophication, is when a body of water becomes overly enriched with minerals and nutrients that induce excessive growth of plants and algae.
Geologically, a fjord or fiord is a long, narrow inlet with steep sides or cliffs, created by a glacier.
A fossil (from Classical Latin fossilis; literally, "obtained by digging") is any preserved remains, impression, or trace of any once-living thing from a past geological age.
Global warming, also referred to as climate change, is the observed century-scale rise in the average temperature of the Earth's climate system and its related effects.
The Gotland Basin is the large central basin in the Baltic Sea between Sweden and the Baltic countries.
Groundwater is the water present beneath Earth's surface in soil pore spaces and in the fractures of rock formations.
The Gulf of Mexico (Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent.
Hood Canal is a fjord forming the western lobe, and one of the four main basins,, Chapter 3 of the, King County Department of Natural Resources, Seattle, Washington, 2001.
A hypersaline lake is a landlocked body of water that contains significant concentrations of sodium chloride or other salts, with saline levels surpassing that of ocean water (3.5%, i.e.). Specific microbial and crustacean species thrive in these high salinity environments that are inhospitable to most lifeforms.
Hypoxia refers to low oxygen conditions.
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources.
L'Atalante basin is a hypersaline brine lake at the bottom of the Mediterranean Sea about west of the island of Crete.
A Lagerstätte (from Lager 'storage, lair' Stätte 'place'; plural Lagerstätten) is a sedimentary deposit that exhibits extraordinary fossils with exceptional preservation—sometimes including preserved soft tissues.
Lake stratification is the separation of lakes into three layers.
The Levantine Sea is the easternmost part of the Mediterranean Sea.
With a length of approximately 35 km (22 statute miles), Mariager Fjord is the longest fjord in Denmark.
A meromictic lake has layers of water that do not intermix.
A mortichnia is the "death march", or last walk, of a living creature.
Nitrate is a polyatomic ion with the molecular formula and a molecular mass of 62.0049 u.
The Orca Basin is a mid-slope, silled, mini-basin in the northern Gulf of Mexico some 300 km southwest of the Mississippi River mouth on the Louisiana continental slope.
Oxygen saturation (symbol SO2) is a relative measure of the concentration of oxygen that is dissolved or carried in a given medium as a proportion of the maximal concentration that can be dissolved in that medium.
The Permian–Triassic (P–Tr or P–T) extinction event, colloquially known as the Great Dying, the End-Permian Extinction or the Great Permian Extinction, occurred about 252 Ma (million years) ago, forming the boundary between the Permian and Triassic geologic periods, as well as the Paleozoic and Mesozoic eras.
The purple sulfur bacteria (PSB) are part of a group of Proteobacteria capable of photosynthesis, collectively referred to as purple bacteria.
Redox (short for reduction–oxidation reaction) (pronunciation: or) is a chemical reaction in which the oxidation states of atoms are changed.
Saanich Inlet (also Saanich Arm) is a body of salt water that lies between the Saanich Peninsula and the Malahat highlands of Vancouver Island, British Columbia, Canada.
The sulfate or sulphate (see spelling differences) ion is a polyatomic anion with the empirical formula.
Sulfide (systematically named sulfanediide, and sulfide(2−)) (British English sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions.
Sweden (Sverige), officially the Kingdom of Sweden (Swedish), is a Scandinavian country in Northern Europe.
A thermocline (also known as the thermal layer or the metalimnion in lakes) is a thin but distinct layer in a large body of fluid (e.g. water, such as an ocean or lake) or air (such as an atmosphere) in which temperature changes more rapidly with depth than it does in the layers above or below.
Vancouver Island is in the northeastern Pacific Ocean, just off the coast of Canada.
Venezuela, officially denominated Bolivarian Republic of Venezuela (República Bolivariana de Venezuela),Previously, the official name was Estado de Venezuela (1830–1856), República de Venezuela (1856–1864), Estados Unidos de Venezuela (1864–1953), and again República de Venezuela (1953–1999).
Water stagnation occurs when water stops flowing.