A water column is a conceptual column of water from surface to bottom sediments. For the fishing industry and the practice of fishing see Fishing. Fisheries science is the academic discipline of managing and understanding Fisheries. In the deep ocean marine snow is a continuous shower of mostly organic Detritus falling from the upper layers of the water column Upwelling is an oceanographic phenomenon that involves wind-driven motion of dense cooler and usually nutrient-rich water towards the ocean surface replacing the warmer In oceanic Biogeochemistry, the continental shelf pump is proposed to operate in the shallow waters of the continental shelves, acting as a mechanism to A gyre is any manner of swirling Vortex. It is often used to describe large-scale Wind or Ocean currents. The Humboldt Current is a cold low- Salinity Ocean current that flows north-westward along the west coast of South America from the southern tip of Chile Eutrophication is an increase in chemical Nutrients -- typically compounds containing Nitrogen or Phosphorus -- in an Ecosystem, and may occur This page is about the oceanic phenomenon see Dead Zone for other uses "Red tide" is a common name for a phenomenon known as an Algal bloom, an event in which estuarine marine or fresh water algae accumulate rapidly in the Water Biomass, in Ecology, is the mass of living biological organisms in a given area or Ecosystem at a given time Shifting baseline (also known as sliding baseline) is a term used to describe the way significant changes to a system are measured against past Baselines which themselves A Fishery is an area with an associated Fish or Aquatic population which is harvested for its commercial or recreational value Fish measurement refers to the measuring of the length of individual fish and of various parts of their anatomy. Bioeconomics is the study of the dynamics of living resources using economic models Marine biology is the scientific study of living Organisms in the Ocean or other marine or Brackish bodies of water Oceanography (from the greek words Ωκεανός meaning Ocean and γράφω meaning to write also called oceanology or Marine conservation, also known as marine resources conservation, is the protection and preservation of Ecosystems in Oceans and Seas Marine conservation Global Ocean Ecosystem Dynamics (GLOBEC is the International Geosphere-Biosphere Programme (IGBP core project responsible for understanding how global change will affect the abundance diversity Walther Herwig ( February 25, 1838 - December 16, 1912) was a Prussian administrative lawyer and the founder of the German Overfishing occurs when Fishing activities reduce fish stocks below an acceptable level For the computer security term see Phishing. Fishing is the activity of catching Fish. [1] This concept is used chiefly for environmental studies evaluating the stratification or mixing (e. Environmental science is the study of interactions among physical chemical and biological components of the environment. Water stratification occurs when water of high and low salinity ( Halocline) as well as cold and warm water ( Thermocline) forms layers that act as barriers to water g. by wind induced currents) of the thermal or chemically stratified layers in a lake, stream or ocean. Some of the common parameters analyzed in the water column are: pH, turbidity, temperature, salinity, total dissolved solids, various pesticides, pathogens and a wide variety of chemicals and biota. pH is the measure of the acidity or alkalinity of a Solution. Turbidity is the cloudiness or haziness of a fluid caused by individual particles ( suspended solids) that are generally invisible to the Naked eye Temperature is a physical property of a system that underlies the common notions of hot and cold something that is hotter generally has the greater temperature Salinity is the Saltiness or dissolved salt content of a body of Water. Total Dissolved Solids (often abbreviated TDS) is an expression for the combined content of all Inorganic and organic substances contained in a liquid A pesticide is a substance or mixture of substances used to kill a pest. A pathogen (from Greek πάθος pathos "suffering passion" and γἰγνομαι (γεν- gignomai (gen- "I give birth to" infectious
The concept of water column is quite important, since many aquatic phenomena are explained by the incomplete vertical mixing of chemical, physical or biological parameters. For example, when studying the metabolism of benthic organisms, it is the specific bottom layer concentration of available chemicals in the water column that is meaningful, rather than the average value of those chemicals throughout the water column. Benthos are the organisms which live on in or near the Seabed, also known as the Benthic zone. A chemical substance is a Material with a definite chemical composition.
Hydrostatic pressure can be analyzed by the height of a water column, which effectively yields the pressure at a given depth of the column. Fluid statics (also called hydrostatics) is the Science of Fluids at rest and is a sub-field within Fluid mechanics.
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External links
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