euphotic


Also found in: Medical, Encyclopedia, Wikipedia.
Related to euphotic: photic, Photic zone

eu·phot·ic

 (yo͞o-fŏt′ĭk)
adj.
Of, relating to, or being the uppermost layer of a body of water that receives sufficient light for photosynthesis and the growth of green plants.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

euphotic

(juːˈfəʊtɪk; -ˈfɒt-)
adj
(Environmental Science) ecology denoting or relating to the uppermost part of a sea or lake down to about 100 metres depth, which receives enough light to enable photosynthesis to take place
[C20: from eu- + photic]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

eu•pho•tic

(yuˈfoʊ tɪk)
adj.
of or pertaining to the zone of a body of water extending from the surface to a depth at which enough light still penetrates for photosynthesis to occur.
[1905–10; eu- + photic]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Translations
euphotique
References in periodicals archive ?
These increases in phytoplankton are promoted by the interaction between physical forcing (e.g., wind and currents) and the topography of the island, promoting the injection of macro and micronutrients into the euphotic zone and stimulating biological production.
Variabilidad espacio-temporal de la clorofila-a satelital en la Provincia de Isla de Pascua, Oceano Pacifico suroriental
The euphotic zone ([Z.sub.eu]) was calculated as three times the Secchi disk extinction depth (Cole, 1994).
Recurrent blooms of Heterosigma akashiwo (Raphidophyceae) in the Piraque Channel, Rodrigo de Freitas Lagoon, southeast Brazil/Floracoes recorrentes de Heterosigma akashiwo (Raphydophyceae) no Canal do Piraque, Lagoa Rodrigo de Freitas, sudeste do Brasil
Cyanophytes also exploit nutrients at the bottom of the euphotic zone by buoyancy regulation of its gas vacuoles (Reynolds 1984b).
On the phytoplankton of Awba reservoir, Ibadan, Nigeria
"Theories" and techniques for observing turbulence in the oceanic euphotic zone.
The Fluid Dynamical Context of Chemosensory Behavior
Also known as Island Mass Effect (Doty & Ogury, 1956), the increase of local Chl-a in the vicinity of these islands results from the increase of nutrients in the euphotic zone from the interaction between mesoscale eddies and island topography (Andrade et al., 2012, 2014).
Remolinos intratermoclina en el Archipielago Juan Fernandez, Oceano Pacifico suroriental
The euphotic zone ([Z.sub.eu]):mixing zone ([Z.sub.mix]) ratio was used as an index for light availability in the mixing zone (Jensen et al., 1994).
Morphological variation in Staurastrum rotula (Zygnemaphyceae, Desmidiales) in the deepest natural Brazilian lake: essence or accident?/Variacao morfologica em Staurastrum rotula (Zygnemaphyceae, Desmidiales) em um lago natural profundo do Brasil: essencia ou acidente?
A large percentage of oceanic zooplankton are transparent, some achieving almost complete invisibility (Davis, 1955; Hardy, 1956; McFallNgai, 1990), and it is generally assumed that transparency is an important method of camouflage from visual predators and prey in the optically featureless open-ocean environment, particularly in the euphotic region (reviewed in McFall-Ngai, 1990; Hamner, 1996).
Transparency and visibility of gelatinous zooplankton from the Northwestern Atlantic and Gulf of Mexico
Associated to northern Chile upwelling system, a shallow oxygen minimum layer (<0.5 mL [L.sup.-1]) within the euphotic zone might impose a strict physiological limit for vertical movement (Morales et al., 1996; Giesecke & Gonzalez, 2004), forcing aggregation of planktonic organisms in the upper 50 m layer (Escribano & Hidalgo, 2000).
Variacion diaria en la distribucion vertical de larvas de peces forzada por filamentos de surgencia frente a Punta Angamos (norte de Chile)
This is especially the case when the phenomenon of sedimentation occurs, which can reduce light penetration in the euphotic zone of the water column, drastically affecting primary production and consequently population dynamics (Neves et al., 2006).
Modelling the risk of mortality of Corbicula fluminea (muller, 1774) (Bivalvia: Corbiculidae) exposed to different turbidity conditions/Modelagem do risco de mortalidade de Corbicula fluminea (Muller, 1774) (Bivalvia: Corbiculidae) exposta a diferentes condicoes de turbidez
Exceptionally at sampling station Ss4, where the lowest surface density (74 cell*[mL.sup.-1]) was found, the lower limit of the euphotic zone was 4.95 m.
First record of a bloom of the invasive species Ceratium furcoides (Levander) Langhans 1925 in Rio Grande do Sul state, Brazil
These eddies introduce nutrients into the euphotic zone, thereby contributing to an increase in primary production.
Distribucion de Iospilidae (Annelida) a lo largo de la costa oriental brasilena (de Bahia a Rio de Janeiro)
Euphotic zone ([Z.sub.eu]) was estimated as 2.7 times the extinction depth ofSecchi disk (Cole, 1994).
Influence of fish farming in net cages on phytoplankton structure: a case study in a subtropical Brazilian reservoir/Influencia do cultivo de peixes em tanques-rede sobre a estrutura do fitoplancton: estudo de caso em um reservatorio subtropical brasileiro
Dictionary browser ?
Full browser ?