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Photic zone

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2254: 2950: 410: 641:. The upper 200 metres is referred to as the photic or euphotic zone. This represents the region where enough light can penetrate to support photosynthesis, and it corresponds to the epipelagic zone. From 200 to 1000 metres lies the dysphotic zone, or the twilight zone (corresponding with the mesopelagic zone). There is still some light at these depths, but not enough to support photosynthesis. Below 1000 metres is the aphotic (or midnight) zone, where no light penetrates. This region includes the majority of the ocean volume, which exists in complete darkness. 509: 650: 598: 606:
colour of light available at depth underwater, so it is the only colour that can be reflected back to the eye, and everything has a blue tinge under water. A red object at depth will not appear red to us because there is no red light available to reflect off of the object. Objects in water will only appear as their real colours near the surface where all wavelengths of light are still available, or if the other wavelengths of light are provided artificially, such as by illuminating the object with a dive light.
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Detritivores and scavengers are rare in the photic zone. Microbial decomposition of dead organisms begins here and continues once the bodies sink to the aphotic zone where they form the most important source of nutrients for deep sea organisms. The depth of the photic zone depends on the transparency
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Brunelle, Brigitte G.; Sigman, Daniel M.; Jaccard, Samuel L.; Keigwin, Lloyd D.; Plessen, Birgit; Schettler, Georg; Cook, Mea S.; Haug, Gerald H. (2010). "Glacial/interglacial changes in nutrient supply and stratification in the western subarctic North Pacific since the penultimate glacial maximum".
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than the open ocean. Many of these organisms, such as phytoplankton, absorb light in the blue and red range through their photosynthetic pigments, leaving green as the dominant wavelength of reflected light. Therefore the higher the phytoplankton concentration in water, the greener it appears. Small
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In addition to overall attenuation, the oceans absorb the different wavelengths of light at different rates. The wavelengths at the extreme ends of the visible spectrum are attenuated faster than those wavelengths in the middle. Longer wavelengths are absorbed first; red is absorbed in the upper 10
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Water is very effective at absorbing incoming light, so the amount of light penetrating the ocean declines rapidly (is attenuated) with depth. At one metre depth only 45% of the solar energy that falls on the ocean surface remains. At 10 metres depth only 16% of the light is still present, and only
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Most of the solar energy reaching the Earth is in the range of visible light, with wavelengths between about 400-700 nm. Each colour of visible light has a unique wavelength, and together they make up white light. The shortest wavelengths are on the violet and ultraviolet end of the spectrum, while
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of inorganic nitrogen across the nutricline. Chemical factors include oxygen and trace elements. Biological factors include grazing and migrations. Upwelling carries nutrients from the deep waters into the photic zone, strengthening phytoplankton growth. The remixing and upwelling eventually bring
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additionally brings more nutrients to the photic zone. Nutrient pulse frequency affects the phytoplankton competition. Photosynthesis produces more of it. Being the first link in the food chain, what happens to phytoplankton creates a rippling effect for other species. Besides phytoplankton, many
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Dimethylsulfide loss within the photic zone is controlled by microbial uptake and photochemical degradation. But what exactly is dimethylsulfide and why is it important? This compound (see the photo) helps regulate sulfur cycle and ecology within the ocean. Marine bacteria, algae, coral and most
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This is why things appear blue underwater. How colours are perceived by the eye depends on the wavelengths of light that are received by the eye. An object appears red to the eye because it reflects red light and absorbs other colours. So the only colour reaching the eye is red. Blue is the only
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Animals within the photic zone use the cycle of light and dark as an important environmental signal, migration is directly linked to this fact, fishes use the concept of dusk and dawn when its time to migrate, the photic zone resembles this concept providing a sense of time. These animals can be
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Phytoplankton are restricted to the photo zone only. As its growth is completely dependent upon photosynthesis. This results in the 50–100 m water level inside the ocean. Growth can also come from land factors, for example minerals that are dissolved from rocks, mineral nutrients from
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grow extremely quickly because of sunlight's heavy influence, enabling it to be produced at a fast rate. In fact, ninety five percent of photosynthesis in the ocean occurs in the photic zone. Therefore, if we go deeper, beyond the photic zone, such as into the
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However this compound can be toxic to humans if swallowed, absorbed through the skin and inhaled. Proteins within plants and animals depend on this compound. Making it a significant part of ecology, it's good to know that it lives in the photic zone as well.
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water upwelling associated with this may have contributed to the establishment of globally cooler conditions and the expansion of glaciers across the Northern Hemisphere from 2.73 Ma. While the halocline appears to have prevailed through the
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other animals also live in this zone and utilize these nutrients. The majority of ocean life occurs in the photic zone, the smallest ocean zone by water volume. The photic zone, although small, has a large impact on those who reside in it.
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Comparison of the depths which different colors of light penetrate open ocean waters and the murkier coastal waters. Water absorbs the warmer long wavelengths colours, like reds and oranges, and scatter the cooler short wavelength
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Haug, Gerald H.; Ganopolski, Andrey; Sigman, Daniel M.; Rosell-Mele, Antoni; Swann, George E. A.; Tiedemann, Ralf; Jaccard, Samuel L.; Bollmann, Jörg; Maslin, Mark A.; Leng, Melanie J.; Eglinton, Geoffrey (2005).
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Due to biological uptake, the photic zone has relatively low levels of nutrient concentrations. As a result, phytoplankton doesn't receive enough nutrients when there is high water-column stability. The
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Nie, Junsheng; King, John; Liu, Zhengyu; Clemens, Steve; Prell, Warren; Fang, Xiaomin (2008). "Surface-water freshening: A cause for the onset of North Pacific stratification from 2.75 Ma onward?".
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in the water column. As incoming light at the surface can vary widely, this says little about the net growth of phytoplankton. Typical euphotic depths vary from only a few centimetres in highly
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the longest wavelengths are at the red and infrared end. In between, the colours of the visible spectrum comprise the familiar “ROYGBIV”; red, orange, yellow, green, blue, indigo, and violet.
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Jaccard, S.L.; Galbraith, E.D.; Sigman, D.M.; Haug, G.H. (2010). "A pervasive link between Antarctic ice core and subarctic Pacific sediment records over the past 800kyrs".
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Sarnthein, M.; Gebhardt, H.; Kiefer, T.; Kucera, M.; Cook, M.; Erlenkeuser, H. (2004). "Mid Holocene origin of the sea-surface salinity low in the subarctic North Pacific".
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An increase in the amount of phytoplankton also creates an increase in zooplankton, the zooplankton feeds on the phytoplankton as they are at the bottom of the food chain.
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metres, orange by about 40 metres, and yellow disappears before 100 metres. Shorter wavelengths penetrate further, with blue and green light reaching the deepest depths.
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is actually greater than the photosynthesis rate. The reason why phytoplankton production is so important is because it plays a prominent role when interwoven with other
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refer to preserved or fossilized physical markers which serve as substitutes for direct meteorological or ocean measurements. An example of proxies is the use of
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silt particles may also absorb blue light, further shifting the colour of water away from blue when there are high concentrations of suspended particles.
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of organisms can be controlled by a number of factors. Physical factors include: temperature, hydrostatic pressure, turbulent mixing such as the upward
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Galbraith, Eric D.; Kienast, Markus; Jaccard, Samuel L.; Pedersen, Thomas F.; Brunelle, Brigitte G.; Sigman, Daniel M.; Kiefer, Thorsten (2008-05-23).
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The depth is, by definition, where radiation is degraded down to 1% of its surface strength. Accordingly, its thickness depends on the extent of light
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of the water. If the water is very clear, the photic zone can become very deep. If it is very murky, it can be only fifty feet (fifteen meters) deep.
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Longhurst, Alan R.; Glen Harrison, W. (June 1988). "Vertical nitrogen flux from the oceanic photic zone by diel migrant zooplankton and nekton".
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at 2.73 Ma, which increased the flux of freshwater to the region, via increased monsoonal rainfall and/or glacial meltwater, and
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is used in order to relate elements collected in modern-day sedimentary samples to climatic and oceanic conditions in the past.
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lives in the photic zone, which is approximately two hundred meters deep. This includes phytoplankton (plants), including
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Zones of the water column as defined by the amount of light penetration. The mesopelagic is sometimes referred to as the
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Kohfeld, Karen E.; Chase, Zanna (2011). "Controls on deglacial changes in biogenic fluxes in the North Pacific Ocean".
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Lee, ZhongPing; Weidemann, Alan; Kindle, John; Arnone, Robert; Carder, Kendall L.; Davis, Curtiss (2007).
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Swann, George E. A.; Maslin, Mark A.; Leng, Melanie J.; Sloane, Hilary J.; Haug, Gerald H. (2006-02-24).
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The ocean can be divided into depth layers depending on the amount of light penetration, as discussed in
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In the photic zone, the photosynthesis rate exceeds the respiration rate. This is due to the abundant
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1% of the original light is left at 100 metres. No light penetrates beyond 1000 metres.
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other organisms within the ocean release this, constituting a range of gene families.
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herrings and sardines and other fishes that consistently live within the photic zone.
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Gundersen, K.; Mountain, C. W.; Taylor, Diane; Ohye, R.; Shen, J. (July 1972).
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generations of plants and animals ,that made its way into the photic zone.
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concentrations, such that the depth of the photic zone often decreases as
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The uppermost layer of a sea water column that is exposed to sunlight
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at glacial terminations and during the early part of interglacials.
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often appears greenish. Coastal water contains much more suspended
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Material was copied from this source, which is available under a
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Material was copied from this source, which is available under a
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Phytoplankton growth is affected by the colour spectrum of light,
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Intricate silicate (glass) shell, 32-40 million years old, of a
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Sigman, Daniel M.; Jaccard, Samuel L.; Haug, Gerald H. (2004).
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distributed everywhere in the photic zone. Finally, there are
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which is used as an energy source for photosynthesis by
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Deep Sea Research Part A. Oceanographic Research Papers
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Creative Commons Attribution 3.0 International License
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Creative Commons Attribution 4.0 International License
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appears clear and blue because it contains much less
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nutrient-rich wastes back into the photic zone. The
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American Geophysical Union (AGU): n/a. 1312: 1310: 832: 2279:Freshwater environmental quality parameters 1437: 1435: 1260: 1258: 1256: 1254: 1252: 1250: 3013: 2999: 1931: 1917: 801:has been attributed to the onset of major 396: 308: 294: 3020: 1766: 1531: 1342: 1307: 1218: 1169: 936:Evolution of primary producers in the sea 1432: 1247: 1067: 848: 836: 648: 596: 575: 554: 527:lakes, to around 200 meters in the open 507: 408: 400: 1548: 1199:Journal of Geophysical Research: Oceans 14: 4262: 3285:one-dimensional Saint-Venant equations 1938: 2994: 2467: 2466: 1950: 1912: 1597: 4232: 691:, which grow silicate shells called 550: 503: 2542:Oceanic physical-biological process 2404:List of freshwater ecoregions (WWF) 1607:Earth and Planetary Science Letters 882:Electromagnetic absorption by water 644: 24: 4112:National Oceanographic Data Center 3539:World Ocean Circulation Experiment 3427:Global Ocean Data Analysis Project 860: 568:in the blue and red range through 481:Nutrient uptake in the photic zone 25: 4286: 3959:Global Sea Level Observing System 1850:(23–24). Elsevier BV: 3350–3363. 1807:(19–20). Elsevier BV: 2579–2590. 1663:(20–22). Elsevier BV: 2089–2099. 4242: 4231: 4222: 4221: 3417:Geochemical Ocean Sections Study 3333: 3322: 2975: 2974: 2962: 2948: 2580: 2252: 2069:Colored dissolved organic matter 1644:from the original on 2022-10-09. 1357: 1271: 788: 779: 4147:Ocean thermal energy conversion 3870:Vine–Matthews–Morley hypothesis 2414:Latin America and the Caribbean 1864:10.1016/j.quascirev.2011.08.007 1835: 1821:10.1016/j.quascirev.2010.03.010 1791: 1734: 1720:10.1016/j.quascirev.2009.10.007 1691: 1677:10.1016/j.quascirev.2004.08.008 1648: 1591: 1577:10.1016/j.gloplacha.2008.08.003 1499: 1369: 1283: 1235: 1186: 997:"Trophic Levels of Coral Reefs" 853:Drawn image of a phytoplankton 715:is the study of past climates. 601:Cycling of marine phytoplankton 2896:Ecological values of mangroves 2439:North Pacific Subtropical Gyre 1244:NOAA. Updated: 26 August 2010. 1137: 1094: 1061: 1037: 1013: 989: 984:Encyclopædia Britannica Online 974: 928: 904: 803:Northern Hemisphere glaciation 762:, from the modern day back to 336:) is the uppermost layer of a 13: 1: 1706:(1–2). Elsevier BV: 206–212. 1613:(1–2). Elsevier BV: 332–338. 1329:(1). Copernicus GmbH: 15–25. 897: 384:such as phytoplankton. These 372:Photosynthesis in photic zone 3407:El Niño–Southern Oscillation 3377:Craik–Leibovich vortex force 3133:Luke's variational principle 2916:Marine conservation activism 2901:Fisheries and climate change 1267:Introduction to Oceanography 1123:10.1016/0198-0149(88)90065-9 7: 4275:Oceanographical terminology 2911:Human impact on marine life 2788:Davidson Seamount § Ecology 2024:Aquatic population dynamics 1598:Swann, George E.A. (2010). 1563:(1–2). Elsevier BV: 49–52. 1557:Global and Planetary Change 1070:Beaches and Coastal Geology 875: 823:glacial–interglacial cycles 766:, which coincides with the 683:which form the base of the 512:Depth of light penetration 10: 4291: 3472:Ocean dynamical thermostat 3320: 1844:Quaternary Science Reviews 1801:Quaternary Science Reviews 1700:Quaternary Science Reviews 1657:Quaternary Science Reviews 1627:10.1016/j.epsl.2010.06.035 1150:Limnology and Oceanography 841:Dimethyl sulfide structure 662: 562:and in the process called 405:Layers of the pelagic zone 4217: 4056: 4030: 4007:Ocean acoustic tomography 3992: 3944: 3883: 3820:MohoroviÄŤić discontinuity 3778: 3650: 3547: 3412:General circulation model 3342: 3048:Benjamin–Feir instability 3028: 2942: 2881: 2753: 2689: 2651: 2598: 2589: 2578: 2527:Marine primary production 2479: 2475: 2462: 2421:List of marine ecoregions 2396: 2261: 2250: 1964: 1960: 1946: 1171:10.4319/lo.1972.17.4.0524 1078:10.1007/0-387-30843-1_325 833:Phytoplankton side notes. 539:increases. Moreover, the 4137:Ocean surface topography 3512:Thermohaline circulation 3502:Subsurface ocean current 3442:Hydrothermal circulation 3275:Wave–current interaction 3053:Boussinesq approximation 2773:Coastal biogeomorphology 2768:Marine coastal ecosystem 807:sea surface temperatures 772:halocline stratification 768:last interglacial period 687:. They are dominated by 4174:Sea surface temperature 4157:Outline of oceanography 3352:Atmospheric circulation 3290:shallow water equations 3280:Waves and shallow water 3173:Significant wave height 2681:Paradox of the plankton 2492:Diel vertical migration 2386:Freshwater swamp forest 2104:GIS and aquatic science 1952:General components and 1619:2010E&PSL.297..332S 799:stratified water column 764:marine isotope stage 5e 570:photosynthetic pigments 397:Life in the photic zone 4169:Sea surface microlayer 3534:Wind generated current 2507:Large marine ecosystem 2199:Shoaling and schooling 966:: CS1 maint: others ( 854: 842: 660: 602: 582: 573: 513: 418: 406: 4002:Deep scattering layer 3984:World Geodetic System 3492:Princeton Ocean Model 3372:Coriolis–Stokes force 3022:Physical oceanography 2926:Marine protected area 2853:Salt pannes and pools 2628:Marine larval ecology 2603:Census of Marine Life 2487:Deep scattering layer 2444:San Francisco Estuary 2409:Africa and Madagascar 2234:Underwater camouflage 2014:Aquatic biomonitoring 1954:freshwater ecosystems 1893:www.dnr.louisiana.gov 1344:10.5194/cp-11-15-2015 1049:www.sciencedirect.com 1025:www.sciencedirect.com 892:Mesophotic coral reef 852: 840: 663:Further information: 652: 631:microscopic organisms 600: 579: 558: 511: 412: 404: 364:due to the activity ( 4022:Underwater acoustics 3582:Perigean spring tide 3447:Langmuir circulation 3158:Rossby-gravity waves 2661:Marine bacteriophage 2623:Marine invertebrates 1768:10.1029/2007pa001518 1533:10.1029/2005pa001147 1220:10.1029/2006JC003802 721:Paleoclimate proxies 488:spatial distribution 457:plant eaters. Next, 272:Ocean stratification 4184:Science On a Sphere 3790:Convergent boundary 3462:Modular Ocean Model 3422:Geostrophic current 3138:Mild-slope equation 2537:Ocean fertilization 2346:Trophic state index 2304:Lake stratification 2034:Aquatic respiration 1856:2011QSRv...30.3350K 1813:2010QSRv...29.2579B 1759:2008PalOc..23.2212G 1712:2010QSRv...29..206J 1669:2004QSRv...23.2089S 1569:2008GPC....64...49N 1524:2006PalOc..21.1009S 1469:10.1038/nature03332 1461:2005Natur.433..821H 1402:10.1038/nature02357 1394:2004Natur.428...59S 1335:2015CliPa..11...15S 1323:Climate of the Past 1211:2007JGRC..112.3009L 1162:1972LimOc..17..524G 1115:1988DSRA...35..881L 445:. It also includes 267:Lake stratification 3840:Seafloor spreading 3830:Outer trench swell 3795:Divergent boundary 3695:Continental margin 3680:Carbonate platform 3577:Lunitidal interval 2803:Intertidal wetland 2798:Intertidal ecology 2666:Marine prokaryotes 2608:Deep-sea community 2502:Iron fertilization 2425:Specific examples 2351:Upland and lowland 2269:Freshwater biology 2134:Microbial food web 2044:Aquatic toxicology 1987:Aquatic adaptation 1940:Aquatic ecosystems 1264:Webb, Paul (2019) 916:www.britannica.com 855: 843: 809:. The decrease of 661: 615:particulate matter 603: 583: 574: 537:primary production 514: 421:Ninety percent of 419: 407: 391:compensation point 366:primary production 277:Aquatic ecosystems 4257: 4256: 4249:Oceans portal 4209:World Ocean Atlas 4199:Underwater glider 4142:Ocean temperature 3805:Hydrothermal vent 3770:Submarine volcano 3705:Continental shelf 3685:Coastal geography 3675:Bathymetric chart 3557:Amphidromic point 3245:Wave nonlinearity 3103:Infragravity wave 2988: 2987: 2969:Oceans portal 2938: 2937: 2934: 2933: 2813:Hydrothermal vent 2749: 2748: 2638:Seashore wildlife 2469:Marine ecosystems 2458: 2457: 2454: 2453: 2224:Thermal pollution 2189:Ramsar Convention 2129:Microbial ecology 2089:Fisheries science 2029:Aquatic predation 1295:www.ncdc.noaa.gov 1087:978-0-87933-213-6 986:. 14 August 2009. 945:978-0-08-055051-0 685:ocean food chains 551:Light attenuation 504:Photic zone depth 382:primary producers 318: 317: 16:(Redirected from 4282: 4247: 4246: 4235: 4234: 4225: 4224: 4164:Pelagic sediment 4102:Marine pollution 3896:Deep ocean water 3765:Submarine canyon 3700:Continental rise 3592:Rule of twelfths 3507:Sverdrup balance 3437:Humboldt Current 3362:Boundary current 3337: 3326: 3143:Radiation stress 3113:Iribarren number 3088:Equatorial waves 3043:Ballantine scale 3038:Airy wave theory 3015: 3008: 3001: 2992: 2991: 2978: 2977: 2971: 2967: 2966: 2957: 2955:Lakes portal 2953: 2952: 2951: 2921:Marine pollution 2613:Deep-water coral 2596: 2595: 2584: 2517:Marine chemistry 2477: 2476: 2464: 2463: 2381:Freshwater marsh 2274:Freshwater biome 2256: 1972:Acoustic ecology 1962: 1961: 1948: 1947: 1933: 1926: 1919: 1910: 1909: 1903: 1902: 1900: 1899: 1885: 1876: 1875: 1839: 1833: 1832: 1795: 1789: 1788: 1770: 1747:Paleoceanography 1738: 1732: 1731: 1695: 1689: 1688: 1652: 1646: 1645: 1643: 1604: 1595: 1589: 1588: 1552: 1546: 1545: 1535: 1512:Paleoceanography 1503: 1497: 1496: 1439: 1430: 1429: 1373: 1367: 1361: 1356: 1346: 1314: 1305: 1304: 1302: 1301: 1287: 1281: 1275: 1262: 1245: 1239: 1233: 1232: 1222: 1190: 1184: 1183: 1173: 1141: 1135: 1134: 1098: 1092: 1091: 1065: 1059: 1058: 1056: 1055: 1041: 1035: 1034: 1032: 1031: 1017: 1011: 1010: 1008: 1007: 993: 987: 978: 972: 971: 965: 957: 932: 926: 925: 923: 922: 908: 820:early Quaternary 792: 783: 713:Paleoclimatology 707:deposits in the 645:Paleoclimatology 541:respiration rate 453:meat eaters and 439:coccolithophores 310: 303: 296: 240: 238: 229: 227: 216: 214: 205: 203: 194: 192: 183: 181: 172: 170: 148: 146: 137: 135: 122: 120: 111: 109: 100: 98: 89: 87: 78: 76: 67: 65: 56: 54: 45: 43: 30: 29: 21: 4290: 4289: 4285: 4284: 4283: 4281: 4280: 4279: 4270:Aquatic ecology 4260: 4259: 4258: 4253: 4241: 4213: 4052: 4026: 3988: 3969:Sea-level curve 3940: 3879: 3865:Transform fault 3815:Mid-ocean ridge 3781: 3774: 3740:Oceanic plateau 3646: 3632:Tidal resonance 3602:Theory of tides 3543: 3452:Longshore drift 3402:Ekman transport 3338: 3332: 3331: 3330: 3329: 3328: 3327: 3318: 3270:Wave turbulence 3203:Trochoidal wave 3128:Longshore drift 3024: 3019: 2989: 2984: 2961: 2960: 2949: 2947: 2946: 2930: 2891:Coral bleaching 2877: 2858:Seagrass meadow 2755:Marine habitats 2745: 2719:Coral reef fish 2685: 2671:Marine protists 2647: 2585: 2576: 2547:Ocean turbidity 2522:Marine food web 2471: 2450: 2392: 2331:River ecosystem 2284:Freshwater fish 2257: 2248: 2054:Bioluminescence 2039:Aquatic science 1956: 1942: 1937: 1907: 1906: 1897: 1895: 1887: 1886: 1879: 1840: 1836: 1796: 1792: 1739: 1735: 1696: 1692: 1653: 1649: 1641: 1602: 1596: 1592: 1553: 1549: 1504: 1500: 1440: 1433: 1374: 1370: 1315: 1308: 1299: 1297: 1289: 1288: 1284: 1263: 1248: 1240: 1236: 1191: 1187: 1142: 1138: 1099: 1095: 1088: 1066: 1062: 1053: 1051: 1043: 1042: 1038: 1029: 1027: 1019: 1018: 1014: 1005: 1003: 995: 994: 990: 979: 975: 959: 958: 946: 934: 933: 929: 920: 918: 910: 909: 905: 900: 887:Epipelagic fish 878: 863: 861:Dimethylsulfide 835: 827:late Quaternary 793: 784: 760:biological pump 753: 749: 745: 728:isotope records 709:marine sediment 671: 659: 647: 572: 567: 561: 553: 506: 497:Ekman transport 483: 427:dinoflagellates 399: 374: 356:into the upper 330:epipelagic zone 314: 262:Marine habitats 236: 235: 225: 224: 212: 211: 201: 200: 190: 189: 179: 178: 168: 167: 144: 143: 133: 132: 118: 117: 107: 106: 96: 95: 85: 84: 74: 73: 63: 62: 52: 51: 41: 40: 28: 23: 22: 15: 12: 11: 5: 4288: 4278: 4277: 4272: 4255: 4254: 4252: 4251: 4239: 4229: 4218: 4215: 4214: 4212: 4211: 4206: 4201: 4196: 4191: 4189:Stratification 4186: 4181: 4176: 4171: 4166: 4161: 4160: 4159: 4149: 4144: 4139: 4134: 4129: 4124: 4119: 4114: 4109: 4104: 4099: 4094: 4089: 4081: 4079:Color of water 4076: 4074:Benthic lander 4071: 4066: 4060: 4058: 4054: 4053: 4051: 4050: 4045: 4040: 4034: 4032: 4028: 4027: 4025: 4024: 4019: 4014: 4009: 4004: 3998: 3996: 3990: 3989: 3987: 3986: 3981: 3979:Sea level rise 3976: 3974:Sea level drop 3971: 3966: 3961: 3956: 3950: 3948: 3942: 3941: 3939: 3938: 3933: 3928: 3923: 3918: 3913: 3908: 3903: 3898: 3893: 3887: 3885: 3881: 3880: 3878: 3877: 3872: 3867: 3862: 3857: 3852: 3847: 3842: 3837: 3832: 3827: 3822: 3817: 3812: 3810:Marine geology 3807: 3802: 3797: 3792: 3786: 3784: 3776: 3775: 3773: 3772: 3767: 3762: 3757: 3752: 3750:Passive margin 3747: 3745:Oceanic trench 3742: 3737: 3732: 3727: 3722: 3717: 3712: 3707: 3702: 3697: 3692: 3687: 3682: 3677: 3672: 3667: 3662: 3656: 3654: 3648: 3647: 3645: 3644: 3639: 3634: 3629: 3624: 3619: 3614: 3609: 3604: 3599: 3594: 3589: 3584: 3579: 3574: 3569: 3564: 3559: 3553: 3551: 3545: 3544: 3542: 3541: 3536: 3531: 3526: 3521: 3520: 3519: 3509: 3504: 3499: 3494: 3489: 3484: 3479: 3477:Ocean dynamics 3474: 3469: 3464: 3459: 3454: 3449: 3444: 3439: 3434: 3429: 3424: 3419: 3414: 3409: 3404: 3399: 3394: 3389: 3384: 3379: 3374: 3369: 3367:Coriolis force 3364: 3359: 3354: 3348: 3346: 3340: 3339: 3321: 3319: 3317: 3316: 3315: 3314: 3304: 3299: 3294: 3293: 3292: 3287: 3277: 3272: 3267: 3262: 3257: 3252: 3247: 3242: 3237: 3232: 3227: 3222: 3217: 3216: 3215: 3205: 3200: 3195: 3190: 3188:Stokes problem 3185: 3180: 3175: 3170: 3165: 3160: 3155: 3150: 3145: 3140: 3135: 3130: 3125: 3123:Kinematic wave 3120: 3115: 3110: 3105: 3100: 3095: 3090: 3085: 3080: 3075: 3070: 3065: 3060: 3055: 3050: 3045: 3040: 3034: 3032: 3026: 3025: 3018: 3017: 3010: 3003: 2995: 2986: 2985: 2983: 2982: 2972: 2958: 2943: 2940: 2939: 2936: 2935: 2932: 2931: 2929: 2928: 2923: 2918: 2913: 2908: 2903: 2898: 2893: 2887: 2885: 2879: 2878: 2876: 2875: 2870: 2865: 2860: 2855: 2850: 2845: 2840: 2835: 2830: 2825: 2820: 2815: 2810: 2805: 2800: 2795: 2790: 2785: 2780: 2775: 2770: 2765: 2759: 2757: 2751: 2750: 2747: 2746: 2744: 2743: 2738: 2737: 2736: 2731: 2726: 2721: 2716: 2709:Saltwater fish 2706: 2704:Marine reptile 2701: 2695: 2693: 2687: 2686: 2684: 2683: 2678: 2676:Marine viruses 2673: 2668: 2663: 2657: 2655: 2653:Microorganisms 2649: 2648: 2646: 2645: 2643:Wild fisheries 2640: 2635: 2630: 2625: 2620: 2615: 2610: 2605: 2599: 2593: 2587: 2586: 2579: 2577: 2575: 2574: 2569: 2564: 2559: 2557:Thorson's rule 2554: 2549: 2544: 2539: 2534: 2529: 2524: 2519: 2514: 2512:Marine biology 2509: 2504: 2499: 2494: 2489: 2483: 2481: 2473: 2472: 2460: 2459: 2456: 2455: 2452: 2451: 2449: 2448: 2447: 2446: 2441: 2436: 2431: 2423: 2418: 2417: 2416: 2411: 2400: 2398: 2394: 2393: 2391: 2390: 2389: 2388: 2383: 2378: 2373: 2371:Brackish marsh 2368: 2358: 2353: 2348: 2343: 2338: 2333: 2328: 2323: 2322: 2321: 2311: 2306: 2301: 2299:Lake ecosystem 2296: 2291: 2289:Hyporheic zone 2286: 2281: 2276: 2271: 2265: 2263: 2259: 2258: 2251: 2249: 2247: 2246: 2241: 2236: 2231: 2226: 2221: 2216: 2211: 2206: 2201: 2196: 2191: 2186: 2181: 2176: 2171: 2166: 2161: 2156: 2151: 2146: 2141: 2139:Microbial loop 2136: 2131: 2126: 2121: 2116: 2111: 2106: 2101: 2096: 2091: 2086: 2084:Eutrophication 2081: 2076: 2071: 2066: 2064:Cascade effect 2061: 2056: 2051: 2046: 2041: 2036: 2031: 2026: 2021: 2016: 2011: 2010: 2009: 2004: 1999: 1992:Aquatic animal 1989: 1984: 1979: 1974: 1968: 1966: 1958: 1957: 1944: 1943: 1936: 1935: 1928: 1921: 1913: 1905: 1904: 1889:"Accumulation" 1877: 1834: 1790: 1733: 1690: 1647: 1590: 1547: 1498: 1431: 1368: 1306: 1282: 1246: 1242:Ocean Explorer 1234: 1205:(C3): C03009. 1185: 1156:(4): 524–532. 1136: 1109:(6): 881–889. 1093: 1086: 1060: 1036: 1012: 988: 973: 944: 927: 902: 901: 899: 896: 895: 894: 889: 884: 877: 874: 862: 859: 834: 831: 795: 794: 787: 785: 778: 751: 747: 743: 681:microorganisms 653: 646: 643: 564:photosynthesis 559: 552: 549: 505: 502: 492:turbulent flux 482: 479: 461:are the small 415:dysphotic zone 398: 395: 373: 370: 350:photosynthesis 340:that receives 316: 315: 313: 312: 305: 298: 290: 287: 286: 285: 284: 282:Wild fisheries 279: 274: 269: 264: 256: 255: 251: 250: 249: 248: 247: 246: 245: 244: 222: 221: 220: 209: 187: 162: 161: 159:Stratification 155: 154: 153: 152: 141: 130: 129: 128: 127: 126: 115: 104: 93: 71: 70: 69: 35: 34: 33:Aquatic layers 26: 18:Euphotic depth 9: 6: 4: 3: 2: 4287: 4276: 4273: 4271: 4268: 4267: 4265: 4250: 4245: 4240: 4238: 4230: 4228: 4220: 4219: 4216: 4210: 4207: 4205: 4202: 4200: 4197: 4195: 4192: 4190: 4187: 4185: 4182: 4180: 4177: 4175: 4172: 4170: 4167: 4165: 4162: 4158: 4155: 4154: 4153: 4150: 4148: 4145: 4143: 4140: 4138: 4135: 4133: 4130: 4128: 4125: 4123: 4120: 4118: 4115: 4113: 4110: 4108: 4105: 4103: 4100: 4098: 4097:Marine energy 4095: 4093: 4090: 4088: 4087: 4082: 4080: 4077: 4075: 4072: 4070: 4067: 4065: 4064:Acidification 4062: 4061: 4059: 4055: 4049: 4046: 4044: 4041: 4039: 4036: 4035: 4033: 4029: 4023: 4020: 4018: 4017:SOFAR channel 4015: 4013: 4010: 4008: 4005: 4003: 4000: 3999: 3997: 3995: 3991: 3985: 3982: 3980: 3977: 3975: 3972: 3970: 3967: 3965: 3962: 3960: 3957: 3955: 3952: 3951: 3949: 3947: 3943: 3937: 3934: 3932: 3929: 3927: 3924: 3922: 3919: 3917: 3914: 3912: 3909: 3907: 3904: 3902: 3899: 3897: 3894: 3892: 3889: 3888: 3886: 3882: 3876: 3873: 3871: 3868: 3866: 3863: 3861: 3858: 3856: 3853: 3851: 3848: 3846: 3843: 3841: 3838: 3836: 3833: 3831: 3828: 3826: 3825:Oceanic crust 3823: 3821: 3818: 3816: 3813: 3811: 3808: 3806: 3803: 3801: 3800:Fracture zone 3798: 3796: 3793: 3791: 3788: 3787: 3785: 3783: 3777: 3771: 3768: 3766: 3763: 3761: 3758: 3756: 3753: 3751: 3748: 3746: 3743: 3741: 3738: 3736: 3735:Oceanic basin 3733: 3731: 3728: 3726: 3723: 3721: 3718: 3716: 3713: 3711: 3708: 3706: 3703: 3701: 3698: 3696: 3693: 3691: 3688: 3686: 3683: 3681: 3678: 3676: 3673: 3671: 3668: 3666: 3665:Abyssal plain 3663: 3661: 3658: 3657: 3655: 3653: 3649: 3643: 3640: 3638: 3635: 3633: 3630: 3628: 3625: 3623: 3620: 3618: 3615: 3613: 3610: 3608: 3605: 3603: 3600: 3598: 3595: 3593: 3590: 3588: 3585: 3583: 3580: 3578: 3575: 3573: 3572:Internal tide 3570: 3568: 3565: 3563: 3560: 3558: 3555: 3554: 3552: 3550: 3546: 3540: 3537: 3535: 3532: 3530: 3527: 3525: 3522: 3518: 3515: 3514: 3513: 3510: 3508: 3505: 3503: 3500: 3498: 3495: 3493: 3490: 3488: 3485: 3483: 3480: 3478: 3475: 3473: 3470: 3468: 3467:Ocean current 3465: 3463: 3460: 3458: 3455: 3453: 3450: 3448: 3445: 3443: 3440: 3438: 3435: 3433: 3430: 3428: 3425: 3423: 3420: 3418: 3415: 3413: 3410: 3408: 3405: 3403: 3400: 3398: 3395: 3393: 3390: 3388: 3385: 3383: 3380: 3378: 3375: 3373: 3370: 3368: 3365: 3363: 3360: 3358: 3355: 3353: 3350: 3349: 3347: 3345: 3341: 3336: 3325: 3313: 3310: 3309: 3308: 3305: 3303: 3300: 3298: 3295: 3291: 3288: 3286: 3283: 3282: 3281: 3278: 3276: 3273: 3271: 3268: 3266: 3265:Wave shoaling 3263: 3261: 3258: 3256: 3253: 3251: 3248: 3246: 3243: 3241: 3238: 3236: 3233: 3231: 3228: 3226: 3225:Ursell number 3223: 3221: 3218: 3214: 3211: 3210: 3209: 3206: 3204: 3201: 3199: 3196: 3194: 3191: 3189: 3186: 3184: 3181: 3179: 3176: 3174: 3171: 3169: 3166: 3164: 3161: 3159: 3156: 3154: 3151: 3149: 3146: 3144: 3141: 3139: 3136: 3134: 3131: 3129: 3126: 3124: 3121: 3119: 3116: 3114: 3111: 3109: 3108:Internal wave 3106: 3104: 3101: 3099: 3096: 3094: 3091: 3089: 3086: 3084: 3081: 3079: 3076: 3074: 3071: 3069: 3066: 3064: 3061: 3059: 3058:Breaking wave 3056: 3054: 3051: 3049: 3046: 3044: 3041: 3039: 3036: 3035: 3033: 3031: 3027: 3023: 3016: 3011: 3009: 3004: 3002: 2997: 2996: 2993: 2981: 2973: 2970: 2965: 2959: 2956: 2945: 2944: 2941: 2927: 2924: 2922: 2919: 2917: 2914: 2912: 2909: 2907: 2904: 2902: 2899: 2897: 2894: 2892: 2889: 2888: 2886: 2884: 2880: 2874: 2871: 2869: 2866: 2864: 2863:Sponge ground 2861: 2859: 2856: 2854: 2851: 2849: 2846: 2844: 2841: 2839: 2836: 2834: 2831: 2829: 2828:Marine biomes 2826: 2824: 2821: 2819: 2816: 2814: 2811: 2809: 2806: 2804: 2801: 2799: 2796: 2794: 2791: 2789: 2786: 2784: 2781: 2779: 2776: 2774: 2771: 2769: 2766: 2764: 2761: 2760: 2758: 2756: 2752: 2742: 2739: 2735: 2732: 2730: 2729:Demersal fish 2727: 2725: 2724:Deep-sea fish 2722: 2720: 2717: 2715: 2712: 2711: 2710: 2707: 2705: 2702: 2700: 2699:Marine mammal 2697: 2696: 2694: 2692: 2688: 2682: 2679: 2677: 2674: 2672: 2669: 2667: 2664: 2662: 2659: 2658: 2656: 2654: 2650: 2644: 2641: 2639: 2636: 2634: 2631: 2629: 2626: 2624: 2621: 2619: 2616: 2614: 2611: 2609: 2606: 2604: 2601: 2600: 2597: 2594: 2592: 2588: 2583: 2573: 2570: 2568: 2565: 2563: 2560: 2558: 2555: 2553: 2550: 2548: 2545: 2543: 2540: 2538: 2535: 2533: 2530: 2528: 2525: 2523: 2520: 2518: 2515: 2513: 2510: 2508: 2505: 2503: 2500: 2498: 2495: 2493: 2490: 2488: 2485: 2484: 2482: 2478: 2474: 2470: 2465: 2461: 2445: 2442: 2440: 2437: 2435: 2432: 2430: 2427: 2426: 2424: 2422: 2419: 2415: 2412: 2410: 2407: 2406: 2405: 2402: 2401: 2399: 2395: 2387: 2384: 2382: 2379: 2377: 2374: 2372: 2369: 2367: 2364: 2363: 2362: 2359: 2357: 2354: 2352: 2349: 2347: 2344: 2342: 2339: 2337: 2334: 2332: 2329: 2327: 2324: 2320: 2317: 2316: 2315: 2312: 2310: 2307: 2305: 2302: 2300: 2297: 2295: 2292: 2290: 2287: 2285: 2282: 2280: 2277: 2275: 2272: 2270: 2267: 2266: 2264: 2260: 2255: 2245: 2242: 2240: 2237: 2235: 2232: 2230: 2229:Trophic level 2227: 2225: 2222: 2220: 2217: 2215: 2212: 2210: 2207: 2205: 2202: 2200: 2197: 2195: 2194:Sediment trap 2192: 2190: 2187: 2185: 2182: 2180: 2177: 2175: 2172: 2170: 2169:Phytoplankton 2167: 2165: 2162: 2160: 2157: 2155: 2152: 2150: 2147: 2145: 2142: 2140: 2137: 2135: 2132: 2130: 2127: 2125: 2122: 2120: 2117: 2115: 2112: 2110: 2107: 2105: 2102: 2100: 2097: 2095: 2092: 2090: 2087: 2085: 2082: 2080: 2077: 2075: 2072: 2070: 2067: 2065: 2062: 2060: 2057: 2055: 2052: 2050: 2047: 2045: 2042: 2040: 2037: 2035: 2032: 2030: 2027: 2025: 2022: 2020: 2019:Aquatic plant 2017: 2015: 2012: 2008: 2005: 2003: 2000: 1998: 1995: 1994: 1993: 1990: 1988: 1985: 1983: 1982:Anoxic waters 1980: 1978: 1975: 1973: 1970: 1969: 1967: 1963: 1959: 1955: 1949: 1945: 1941: 1934: 1929: 1927: 1922: 1920: 1915: 1914: 1911: 1894: 1890: 1884: 1882: 1873: 1869: 1865: 1861: 1857: 1853: 1849: 1845: 1838: 1830: 1826: 1822: 1818: 1814: 1810: 1806: 1802: 1794: 1786: 1782: 1778: 1774: 1769: 1764: 1760: 1756: 1752: 1748: 1744: 1737: 1729: 1725: 1721: 1717: 1713: 1709: 1705: 1701: 1694: 1686: 1682: 1678: 1674: 1670: 1666: 1662: 1658: 1651: 1640: 1636: 1632: 1628: 1624: 1620: 1616: 1612: 1608: 1601: 1594: 1586: 1582: 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733: 729: 726: 722: 718: 714: 710: 706: 702: 698: 694: 690: 686: 682: 679: 675: 674:Phytoplankton 670: 666: 657: 651: 642: 640: 635: 632: 628: 624: 620: 619:coastal water 616: 612: 609:Water in the 607: 599: 595: 591: 587: 578: 571: 565: 557: 548: 546: 542: 538: 534: 533:phytoplankton 530: 526: 523: 519: 510: 501: 498: 493: 489: 478: 474: 470: 468: 464: 460: 456: 452: 448: 444: 440: 436: 435:cyanobacteria 432: 428: 424: 416: 411: 403: 394: 392: 387: 386:phytoplankton 383: 379: 369: 367: 363: 359: 355: 351: 347: 346:phytoplankton 343: 339: 338:body of water 335: 334:sunlight zone 331: 327: 326:euphotic zone 323: 311: 306: 304: 299: 297: 292: 291: 289: 288: 283: 280: 278: 275: 273: 270: 268: 265: 263: 260: 259: 258: 257: 253: 252: 243: 234: 233: 232: 223: 219: 210: 208: 199: 198: 197: 188: 186: 177: 176: 175: 166: 165: 164: 163: 160: 157: 156: 151: 142: 140: 131: 125: 116: 114: 113:Abyssopelagic 105: 103: 94: 92: 83: 82: 81: 72: 61: 60: 59: 50: 49: 48: 39: 38: 37: 36: 32: 31: 19: 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Index

Euphotic depth
Pelagic
Photic
Aphotic
Mesopelagic
Bathypelagic
Abyssopelagic
Hadopelagic
Demersal
Benthic
Stratification
Pycnocline
Isopycnal
Chemocline
Nutricline
Halocline
Thermocline
Thermohaline
Marine habitats
Lake stratification
Ocean stratification
Aquatic ecosystems
Wild fisheries
v
t
e
body of water
sunlight
phytoplankton
photosynthesis

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