{"refrec":{"BRefID":3259,"RR":"<b>Vandamme, K.; Maertens, D.</b> (1983). Les teneurs en composés organochlorés dans les organismes marins de différents niveaux trophiques. <i>Landbouwtijdschrift 36(6)</i>: 1677-1682","BEntID":3259,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Landbouwtijdschrift 36(6)</i>: 1677-1682","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Vandamme, K.; Maertens, D.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Vandamme, K.; Maertens, D.","Englishabstract":"Polychlorinated biphenyls (PCBs) and some organochlorine pesticides we re measured in some marine organisms of different trophic levels, sampled in the Belgian coastal waters. Because of their persistence and their lipophilic character they accumulate in lipoidal tissues, causing higher organochlorine residue levels in animals with a high adiposity. To compare the residue levels of different organisms lipid based data must be used.The concept of biological magnification controlled by mass transfers of residues through food chains is questioned because predatory fish like cod contained similar or even lower residue levels than organisms of a lower trophic levellike the peacock worm. This supports the concept that the organochlorine levels are controlled by the equilibrium partitioning of the lipophilic pollutants between body lipids and surrounding water. Nevertheless this equilibrium partitioning appeared to be slow so that other factors like sampling period (before or after spawning) could influence the residue level.","AbstractOtherLang":"La présence des polychlorobiphényles (PCB 's) et de certains pesticides organochlorés a été identifiée dans quelques organismes marins de différents niveaux trophiques, échantillonnés dans les eaux côtières belges. Vu leur rémanence et leur caractère lipophile, ils s' accumulent dans le tissu adipeux, de sorte que les organismes riches en lipides ont le plus souvent une teneur en résidus plus élevée que les organismes maigres. Afin de pouvoir les comparer entre elles, les teneurs doivent être exprimées sur base des lipides.Le concept d' \"accumulation\" s'est avéré ne pas convenir pour les organismes marins étant donné que des poissons prédateurs tels que le cabillaud possèdent des teneurs semblables ou plus basses que des organismes d'un niveau trophique moins élevé comme p. ex. la sabelle. Ceci vient à l'appui de la théorie selon laquelle la teneur en résidus organochlorés est déterminée par une répartition équilibrée de ces substances lipophiles entre la graisse corporelle des organismes et l'eau environnante. Cependant, cette répartition équilibrée s'est révélée avoir un déroulement lent, de sorte que d'autres facteurs tels que p. ex. l' époque d' échantillonnage (avant ou après le frai) peuvent avoir une influence importante sur la teneur en résidus.","BibLvlCode":"AS","StandardTitle":"Les teneurs en composés organochlorés dans les organismes marins de différents niveaux trophiques","OrigTitleLangCode":"fr","OrigTitleLangCodeExtended":"fre","OrigTitleLangID":22,"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":1983,"MonPub":null,"DateUpdate":"2002-05-30","DateCreate":"2000-09-05","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":3259,"PubliDate":1983,"Pagination":"1677-1682","XtraPublOfAnaID":null,"ISBN":null,"Volume":"36","Issue":"6","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45094,"SerRR":"Landbouwtijdschrift = Revue de l'Agriculture. 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