{"refrec":{"BRefID":16817,"RR":"<b>Asmus, R.</b> (1986). Nutrient flux in short-term enclosures of intertidal sand communities, <b><i>in</i></b>: Muus, K. (Ed.) <i>Proceedings of the 20th European Marine Biology Symposium: Nutrient Cycling. Processes in Marine Sediments, Hirtshals, Denmark, 9-13 September 1985. Ophelia: International Journal of Marine Biology,</i> 26: pp. 1-18","BEntID":16817,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Muus, K. (Ed.) <i>Proceedings of the 20th European Marine Biology Symposium: Nutrient Cycling. Processes in Marine Sediments, Hirtshals, Denmark, 9-13 September 1985. European Marine Biology Symposia,</i> 20: pp. 1-18","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Asmus, R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Asmus, R.","Englishabstract":"The investigation was carried out in a shallow water area in the northern Wadden Sea where the euphotic zone reaches down to the bottom. The nutrient flux was measured monthly during 1980 in three communities (an <i>Arenicola</i>-flat, a seagrass-bed and a <i>Nereis-Corophium</i>-belt) in connection with measurements of community metabolism. The nutrient fluxes of NH<sub>4</sub><sup>+</sup>, NO<sub>3</sub><sup>-</sup>, NO<sub>2</sub><sup>-</sup>, Si(OH)<sub>4</sub> were determined in light and dark bell jars in relation to temperature, O<sub>2</sub> consumption and concentrations of nutrients in the ambient water. Experimentally increased abundance of macrofauna (<i>Arenicola marina</i>) enhanced the regeneration of NH <sub>4</sub><sup>+</sup>, NO<sub>3</sub><sup>-</sup>, NO<sub>2</sub><sup>-</sup>. The plants took up NH<sub>4</sub><sup>+</sup> more intensely in the light than in the dark. A community dominated by <i>Zostera noltii</i> showed the highest rate of NH<sub>4</sub><sup>+</sup> uptake (-355µmol NH<sub>4</sub><sup>+</sup>.m<sup>-2</sup>.h<sup>-1</sup>). NO<sub>3</sub><sup>-</sup> was mainly taken up by the communities (up to -354µmol NO<sub>3</sub><sup>-</sup> .m<sup>-2</sup>.h<sup>-1</sup>). Si(OH)<sub>4</sub> was released as well as taken up by all the three communities. Highest rates of Si(OH)<sub>4</sub> release were measured in the <i>Arenicola</i>-flat (up to +1493µmol Si(OH)<sub>4</sub> m<sup>-2</sup>.h<sup>-1</sup>). This flux was correlated with the O<sub>2</sub> consumption, mainly by macrofauna. The system of the three sand flat communities imports nitrate and nitrite and exports ammonia and silicate on an annual basis.","AbstractOtherLang":null,"BibLvlCode":"AMS","StandardTitle":"Nutrient flux in short-term enclosures of intertidal sand communities","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1986,"MonPub":null,"DateUpdate":"2001-09-17","DateCreate":"2001-08-29","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":"WOS:A1986G084700001","VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":16817,"PubliDate":1986,"Pagination":"1-18","XtraPublOfAnaID":null,"ISBN":"87-981066-4-3","Volume":"20","Issue":null,"BRefMon":16816,"BRefMonRR":"<b>Muus, K. (Ed.)</b> (1986). Proceedings of the 20th European Marine Biology Symposium: Nutrient Cycling. Processes in Marine Sediments, Hirtshals, Denmark, 9-13 September 1985. <i>European Marine Biology Symposia</i>, 20. <i>Ophelia: International Journal of Marine Biology</i>, 26. ISBN 87-981066-4-3. 477 pp.","BRefXtra":null,"BRefXtraRR":null,"SerBRefID":20275,"SerRR":"European Marine Biology Symposia.","StandardTitleSer":"European Marine Biology Symposia","ISSN":null,"AbbrevSer":null,"StandardTitleMon":"Proceedings of the 20th European Marine Biology Symposium: Nutrient Cycling. Processes in Marine Sediments, Hirtshals, Denmark, 9-13 September 1985","StartPage":1,"Pages":18,"ToPubliDate":null,"BRefBibLvlCode":"MS","SerNotes":null,"AutString":"Muus, K. 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