{"refrec":{"BRefID":4854,"RR":"<b>Dubois, D.M.; Closset, P.L.</b> (1976). Patchiness in primary and secondary production in the Southern Bight: a mathematical theory, <b><i>in</i></b>: Persoone, G. <i>et al.</i> (Ed.) <i>Proceedings of the 10th European Symposium on Marine Biology, Ostend, Belgium, Sept. 17-23, 1975: 2. Population dynamics of marine organisms in relation with nutrient cycling in shallow waters.</i> pp. 211-229","BEntID":4854,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":", <b><i>in</i></b>: Persoone, G. <i>et al.</i> <i>Proceedings of the 10th European Symposium on Marine Biology, Ostend, Belgium, Sept. 17-23, 1975: 2. Population dynamics of marine organisms in relation with nutrient cycling in shallow waters. European Marine Biology Symposia,</i> 10(2): pp. 211-229","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Dubois, D.M.; Closset, P.L.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Dubois, D.M.; Closset, P.L.","Englishabstract":"Plankton populations display a time-dependent horizontal structuration: the patchiness effect. A mathematical model is proposed to explain the mechanism of the so-called: turbulent patchiness, shear effect patchiness, and eddy diffusity patchiness. Numerical simulations of this model in the southern North Sea show: the creation, the propagation, and the annihilation of the so-called plankton waves displaying disc and ring patterns. These ecological waves are generated by local advective currents fluctuations. Due to the non-linear properties of plankton prey-predator interactions (grazing-rate equation) these fluctuations are then amplified leading to the emergence of new plankton waves propagating with a velocity in the range 1-10 km/day. Temporal simulations of the model with different grazing rate equations exhibit: stable or unstable non-zero stationary state, and stable or unstable limit cycle.","AbstractOtherLang":null,"BibLvlCode":"AMS","StandardTitle":"Patchiness in primary and secondary production in the Southern Bight: a mathematical theory","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-08 01:30:36.346010","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1976,"MonPub":null,"DateUpdate":"2019-06-14","DateCreate":"2000-11-28","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":4854,"PubliDate":1976,"Pagination":"211-229","XtraPublOfAnaID":null,"ISBN":"90-6281-002-0","Volume":"10","Issue":"2","BRefMon":4844,"BRefMonRR":"<b>Persoone, G.; Jaspers, E. (Ed.)</b> (1976). 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