HNLC 2032430 177041002 2007-12-10T19:08:06Z Wavelength 271168 adding heading "See also" and 6 internal links retrieved from "What links here" '''HNLC''' stands for "high-nutrient, low-chlorophyll" - a term used in marine ecology to describe areas of the ocean where the number of [[phytoplankton]] (standing stock) are low in spite of high macro-nutrient concentrations (nitrate, phosphate, silicic acid). HNLC is thought to be caused by the scarcity of iron (a micro-nutrient which phytoplankton require for photosynthesis) and high grazing rates by micro-[[zooplankton]] that feed on the [[phytoplankton]]. The HNLC condition has been observed in the equatorial and subarctic [[Pacific Ocean]], the [[Southern Ocean]], and in some strong upwelling regimes, such as off central and northern California and off Peru. == See also == *[[Antarctic krill]] *[[Iron fertilization]] *[[Iron Hypothesis]] *[[John Martin (oceanographer)]] *[[Marine snow]] *[[Primary production]] {{ecology-stub}} [[Category:Aquatic ecology]] [[ja:HNLC海域]]