{"refrec":{"BRefID":56728,"RR":"<b>Fong, P.; Fong, J.J.; Fong, C.R.</b> (2004). Growth, nutrient storage, and release of dissolved organic nitrogen by <i>Enteromorpha intestinalis</i> in response to pulses of nitrogen and phosphorus. <i>Aquat. Bot. 78(1)</i>: 83-95. <a href=\"http://dx.doi.org/10.1016/j.aquabot.2003.09.006\" target=\"_blank\">http://dx.doi.org/10.1016/j.aquabot.2003.09.006</a>","BEntID":54323,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquat. Bot. 78(1)</i>: 83-95. <a href=\"https://dx.doi.org/10.1016/j.aquabot.2003.09.006\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquabot.2003.09.006</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Fong, P.; Fong, J.J.; Fong, C.R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Fong, P. <i>et al.</i>","Englishabstract":"<i>Enteromorpha intestinalis</i> was subject to nitrogen (N) and phosphorus (P) enrichment supplied in four weekly pulses in a 10:1 molar ratio with six concentrations ranging from no addition to 1000 µM NO<sub>3</sub> +100 µM PO<sub>4</sub>. The alga reduced inorganic N to very low concentrations (<3.5 M) across all nutrient additions while a larger proportion of the added P remained in the water at the end of the experiment (up to 20 µM in highest addition). Growth of <i>E. intestinalis</i> increased in proportion to enrichment across the lower four of the six treatments; range of growth was -6 to 60% change from initial wet wt. N concentration in the tissue decreased at the four lower loading rates due to dilution by growth, but increased greatly (from an initial of 2.7-5% dry wt.) in the highest loading rate partially due to lack of growth in this treatment. In contrast, the mass of N in the tissue increased linearly (slope = 0.012, r<sup>2</sup> = 0.779, P = 0.0001) over all treatments, showing that uptake and storage were not always coupled to growth. Patterns of tissue P concentration and accumulation were similar to N. Significant amounts of dissolved organic N accumulated in the water, especially in the highest N pulses. Net retention of N in algal tissue ranged from 73 to 98% while retention of P ranged from 79 to 88%; the % lowest retention occurred when nutrient pulses were either very high or low. We hypothesize that this opportunistic, bloom-forming alga is adapted to pulses of nutrients, such that, when pulses are of very high concentration, <i>E. intestinalis</i> can delay growth in favor of saving energy to maximize nutrient uptake and storage.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Growth, nutrient storage, and release of dissolved organic nitrogen by <i>Enteromorpha intestinalis</i> in response to pulses of nitrogen and phosphorus","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"nitrogen; phosphorus; estuary; southern California; algal blooms;nutrient cycling","OtherDescriptors":null,"Notes":null,"AnaPub":2004,"MonPub":null,"DateUpdate":"2018-05-17","DateCreate":"2004-01-26","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000188210000007","VABBcode":null,"OpenAcc":1,"DOI":"10.1016/j.aquabot.2003.09.006"},"refs":null,"anarec":{"AnaID":56728,"PubliDate":2004,"Pagination":"83-95","XtraPublOfAnaID":null,"ISBN":null,"Volume":"78","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42195,"SerRR":"Aquatic Botany. 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