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Definition
| Under steady winds, circulation at the surface is driven in tothe forms of vertically rotating cells that leave linear traces at the surface, where the cells cause alternating rows of convergence and divergence of water and entrained materials |
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Definition
| Those constituents required by organisms for maintenance and growth |
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| Area within the latitudinal zone bounded by the two tropics (23", 27' north and south latitude) |
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| Organisms capable of photosynthesis and growth using only dissolved inorganic nutrients |
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Definition
| Organism requiring a few organically derived substances, such as vitamins, along with dissolved inorganic nutrients for photosynthesis |
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| Pertaining to the latitudinal belt between the tropics (23.5ᴼN latutide) and the Arctic or Antarctic Cicle (66.4ᴼS latitude), in the Northern and Southern hemispheres, respectively |
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| Photosynthetically Active Radiation (PAR) |
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Definition
| That part of the light spectrum that can be used in photosyntheis |
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Definition
| The transformation of light energy into chemcial energy for use in living cells |
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| Consumption of oxygen in the process of aerobic metabolism |
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Definition
| The pattern of transfer of nutrients between the components of a food web |
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Definition
| Fragile organic aggregates, resulting from the collision of dissolved organic molecules or from the degradation of gelatinous substances such as larvacean houses; usually enriched with microorganisms. |
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Definition
| Photosynthesis - respiration |
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Definition
| The conversion of gaseous nitrogen to nitrate ammonium by specialized bacteria |
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Definition
| Product of microbial decomposition; NH4 is released as a waste product |
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Definition
| Organism that take up organic molecules as a primary source of nutrition |
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Definition
| The light level (value of PAR) at which photosynthesis and respiration balance each other |
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Definition
| The light level at which maximum photosynthesis (Pmax) is achieved |
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Definition
| A process caused by nitrifying bacteria, where ammonium is oxidized to nitrite or nitrate |
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Definition
| The slowing or stopping of a biochemical process by light |
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Definition
| Reduction of nitrites and nitrates to gaseous nitrogen by microorganisms |
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Definition
| The depth at which photosynthesis and respiration balance each other |
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Definition
| The nitrogen-to-phosphorus ratio in the sea; generally about 14.7:1; regulated by uptake and decomposition of phytoplankton whose N:P ratio is about 16:1 |
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Definition
| The depth to which all water is thoroughly mixed under the wind’s influence |
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| A part of a marine food web where bacteria is consumed by protistans, which are eventually consumed by larger consumers in the food web |
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Definition
| The depth at which total consumption of oxygen from photosynthesis equals total consumption from respiration |
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Term
| Diurnal Vertical Migration |
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Definition
| Migration found in many zooplankton and fish where animals rise toward the surface at night and sink to depth during the daytime |
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