{"refrec":{"BRefID":129532,"RR":"<b>Mohamed, M.O.S.; Mangion, P.; Mwangi, S.; Kairo, J.; Dahdouh-Guebas, F.; Koedam, N.</b> (2008). Productivity in a peri-urban mangrove: does sewage exposure have an impact?, <b><i>in</i></b>: Mohamed, M.O.S. <i>Are peri-urban mangrove forests viable? Effects of sewage pollution and wood exploitation on the structure and development of the mangroves of Mombasa (Kenya).</i> pp. 82-101","BEntID":123620,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: Mohamed, M.O.S. <i>Are peri-urban mangrove forests viable? Effects of sewage pollution and wood exploitation on the structure and development of the mangroves of Mombasa (Kenya).</i> pp. 82-101","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mohamed, M.O.S.; Mangion, P.; Mwangi, S.; Kairo, J.; Dahdouh-Guebas, F.; Koedam, N.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mohamed, M.O.S. <i>et al.</i>","Englishabstract":"This study presents insights on the productivity of an under-valued, over-exploited and sewage polluted peri-urban mangrove through litter fall studies on three common mangrove species over a period of two years. These species <i>R. mucronata, A. marina</i> and <i>S. alba</i>. The study site has been exposed to raw sewage for decades, dozed with sewage every tidal cycle, with the loading exponentially reducing with distance from the source. We observed a strong correlation between the leaf C:N ratio and leaf δ15N signature. Higher C:N ratio for <i>R. mucronata</i> corresponding with lower leaf δ<sup>15</sup>N (3.88 ± 0.64‰) signature, and lower C:N ration for <i>A. marina</i> and <i>S. alb</i> (6.48 ± 0.03‰ and 6.76 ± 0.24‰ respectively) corresponding with higher δ<sup>15</sup>N signature. This reflects species specific response to raw sewage exposure. This shows that the forest has a more open N cycle, favouring δ<sup>15</sup>N accumulation within the system. However, the level of sewage exposure did not appear to impact on litterfall rates. The mean annual litter fall was estimated at 12.16 ± 2.89 t ha<sup>-1</sup>yr<sup>-1</sup> for the whole stand. Litter fall, in both content and quantity was highly seasonal, with high rates occurring in the dry North Easterly Monsoon (NEM) season, January-April (ca. 5.10 ± 1.36 g DW m<sup>-2</sup> day<sup>-1</sup>) and lower rates in the cool and wet South Easterly Monsoon (SEM) season, June-October (ca. 2.53 ± 0.47 g DW m<sup>-2</sup> day<sup>-1</sup>). Productivity varied significantly between species, R. mucronata recording the highest annual rate of 15.34 ± 3.34 t ha<sup>-</sup>yr<sup>-1</sup>. No significant differences in litter fall was observed between A. marina and S. alba, (11.44 ± 2.90 and 9.69 ± 5.26 t ha<sup>-1</sup>yr<sup>-1</sup> respectively). This study shows that sewage exposure does not necessarily translate into elevated productivity in mangroves, but may alter leaf nitrate content depending on species, possibly altering the decay of litter, affecting nutrient cycling within the system.","AbstractOtherLang":null,"BibLvlCode":"AM","StandardTitle":"Productivity in a peri-urban mangrove: does sewage exposure have an impact?","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":2008,"MonPub":null,"DateUpdate":"2009-02-03","DateCreate":"2009-02-03","SecASFANote":null,"ConfID":null,"PeerRev":null,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":129532,"PubliDate":2008,"Pagination":"82-101","XtraPublOfAnaID":null,"ISBN":null,"Volume":null,"Issue":null,"BRefMon":129424,"BRefMonRR":"<b>Mohamed, M.O.S.</b> (2008). Are peri-urban mangrove forests viable? Effects of sewage pollution and wood exploitation on the structure and development of the mangroves of Mombasa (Kenya). PhD Thesis. Free University Brussels. Laboratory of Plant Science and Nature Management: Brussel.  180 pp.","BRefXtra":null,"BRefXtraRR":null,"SerBRefID":null,"SerRR":null,"StandardTitleSer":null,"ISSN":null,"AbbrevSer":null,"StandardTitleMon":"Are peri-urban mangrove forests viable? Effects of sewage pollution and wood exploitation on the structure and development of the mangroves of Mombasa (Kenya)","StartPage":82,"Pages":20,"ToPubliDate":null,"BRefBibLvlCode":"M","SerNotes":null,"AutString":"Mohamed, M.O.S."},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Mohamed","Firstname":"Mohamed Omar Said","Initials":"M.O.S.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":123620,"AutID":79246,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":27325,"InsID":null},{"AutName":"Mangion","Firstname":null,"Initials":"P.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":123620,"AutID":84653,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Mwangi","Firstname":null,"Initials":"S.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":123620,"AutID":55671,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Kairo","Firstname":"James","Initials":"J.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":123620,"AutID":43351,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":7646,"InsID":null},{"AutName":"Dahdouh-Guebas","Firstname":"Farid","Initials":"F.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":123620,"AutID":9906,"OrderNr":5,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":"0000-0002-5906-8996","PersID":242,"InsID":null},{"AutName":"Koedam","Firstname":"Nico","Initials":"N.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":123620,"AutID":9907,"OrderNr":6,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":243,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":143012,"LibID":36,"BRefID":129532,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"143012","RFID":null,"PaidValue":null,"Medium":"Server","Description":null,"Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Open Marien Archief","URL":null,"ClassifID":235,"Classification":"Open Marine Archive","ReqLink":null,"ClassifTypID":5,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":0,"InternalReq":0,"LoggedInReq":0,"Disclaimer":"Disclaimer_OMA","DutchDisclaimer":null,"FileFormat":".pdf","FileDescr":"pdf","InsPub":1,"InsID":36,"FileFormID":6,"LendableFlag":1,"PublicFlag":1,"orderLib":"A","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":null,"MONpubls":[{"PublName":"Free University Brussels. Laboratory of Plant Science and Nature Management","Place":"Brussel"}],"pictures":[],"thestermsPath":[{"ThesaurusTerm":"Mangroves","ThestID":9557,"Acronym":"ASFA","ThesTermPath":"Mangroves"},{"ThesaurusTerm":"Nutrients (mineral)","ThestID":5629,"Acronym":"ASFA","ThesTermPath":"Nutrients (mineral)"},{"ThesaurusTerm":"Sewage disposal","ThestID":7511,"Acronym":"ASFA","ThesTermPath":"Waste disposal > Sewage disposal"}],"thestermsASFA":[{"ThesaurusTerm":"Mangroves"},{"ThesaurusTerm":"Nutrients (mineral)"},{"ThesaurusTerm":"Sewage disposal"}],"taxtermsASFA":null,"geotermsASFA":null,"collections":[{"Collection":"OMA - Open Marien Archief","ShortName":"OMA"}],"conf":null,"proj":null,"Physdatasets":null,"spcols":{"222":{"SpName":"BMB - Belgische Mariene Bibliografie","SpColID":222,"ParSpColID":null,"TopParID":null,"ShortName":"BMB","URLLocation":null,"LibID":36,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"BMB"},"221":{"SpName":"OMA - Open Marien Archief","SpColID":221,"ParSpColID":null,"TopParID":null,"ShortName":"OMA","URLLocation":null,"LibID":36,"OpenRepoFlag":1,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"OMA"}},"doi":null,"publs":null,"serparttypes":null,"monauthors":[{"AutName":"Mohamed","Initials":"M.O.S.","CorporateFlag":0,"BEntID":123512,"AutID":79246,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"AutStrTrunc":"Mohamed, M.O.S."}],"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":123620,"AbstractFlag":-1,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":123620,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":null,"thesterms":[{"ThesaurusTerm":"Mangroves","ThestID":9557,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Nutrients (mineral)","ThestID":5629,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Sewage disposal","ThestID":7511,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"}],"taxterms":null,"geoterms":null,"othterms":null,"asfacodes":null,"asfa2codes":null,"thestermsFRIS":[{"ThesaurusTerm":"Mangroves","DutchTerm":"Mangroves","ThestID":9557,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Nutrients (mineral)","DutchTerm":"Nutriënten","ThestID":5629,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Sewage disposal","DutchTerm":"Afvalwaterlozing","ThestID":7511,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"}],"taxtermsFRIS":null,"geotermsFRIS":null,"othtermsFRIS":null,"resmessage":"","complete":1,"sessions":{"newSesName":"Chisala, Chilekwa, C.","newSesDate":{"date":"2009-02-03 09:19:10.737000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Chisala, Chilekwa, C.","updSesDate":{"date":"2009-02-03 09:19:10.737000","timezone_type":3,"timezone":"Europe/Brussels"}}}