{"refrec":{"BRefID":67036,"RR":"<b>Lehtonen, K.K.</b> (2004). Seasonal variations in the physiological condition of the benthic amphipods <i>Monoporeia affinis</i> and <i>Pontoporeia femorata</i> in the Gulf of Riga (Baltic Sea). <i>Aquat. Ecol. 38(3)</i>: 441-456. <a href=\"https://dx.doi.org/10.1023/b:aeco.0000035165.97619.78\" target=\"_blank\">https://dx.doi.org/10.1023/b:aeco.0000035165.97619.78</a>","BEntID":63403,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Aquat. Ecol. 38(3)</i>: 441-456. <a href=\"https://dx.doi.org/10.1023/b:aeco.0000035165.97619.78\" target=\"_blank\">https://dx.doi.org/10.1023/b:aeco.0000035165.97619.78</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Lehtonen, K.K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Lehtonen, K.K.","Englishabstract":"Seasonal variations in the physiological condition of two benthic deposit-feeding amphipods were studied in two environmentally differing areas in the Gulf of Riga (Baltic Sea) with the purpose of estimating their role in benthic mineralisation. At the shallower (26 m) nearshore station,<i>Monoporeia affinis</i> exhibited low ammonia excretion rate (VNH+<sub>4</sub>) throughout the year. After intensive accumulation of lipids in spring, the lipid reserves of the individuals became rapidly depleted during autumn. Gravid females in winter-early spring showed exceedingly low lipid and triacylglycerol (TAG) levels compared to studies carried out in open-sea areas. <sub>Pontoporeia femorata</sub> studied at the deeper (43 m) offshore station exhibited a higher VNH+<sub>4</sub> at all times with no significant seasonal variation. Lipid and TAG accumulated continuously until November, reaching higher levels than recorded previously for this species. Experiments showed that the temperature coefficient Q<sub>10</sub> determined for VNH+<sub>4</sub> is likely to depend on the recent feeding history of the amphipods. Mineralisation of nitrogen and carbon by the amphipod populations at the study sites was estimated to be 1.7-3.0 g C and 11.3-13.5 mmol NH+<sub>4</sub> m<sup>-2</sup> yr<sup>-1</sup>. Conclusively, both biotic and abiotic factors affect the condition of the amphipods, while the species also have genuine differences in their metabolic characteristics.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Seasonal variations in the physiological condition of the benthic amphipods <i>Monoporeia affinis</i> and <i>Pontoporeia femorata</i> in the Gulf of Riga (Baltic Sea)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-14 01:31:10.297004","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"ammonia excretion; Baltic Sea; benthic amphipods; Gulf of Riga; lipids;seasonal variation","OtherDescriptors":"Ammonia excretion, Baltic Sea, Benthic amphipods, Gulf of Riga, Lipids, Seasonal variation","Notes":null,"AnaPub":2004,"MonPub":null,"DateUpdate":"2020-10-05","DateCreate":"2004-10-12","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000222690000009","VABBcode":null,"OpenAcc":0,"DOI":"10.1023/b:aeco.0000035165.97619.78"},"refs":null,"anarec":{"AnaID":67036,"PubliDate":2004,"Pagination":"441-456","XtraPublOfAnaID":null,"ISBN":null,"Volume":"38","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42197,"SerRR":"Aquatic Ecology. Springer: Dordrecht; London; Boston.  ISSN 1386-2588; e-ISSN 1573-5125","StandardTitleSer":"Aquatic Ecology","ISSN":"1386-2588","AbbrevSer":"Aquat. Ecol.","StandardTitleMon":null,"StartPage":441,"Pages":16,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":{"Line1":"P.O. Box 33","Email":"lehtonen@fimr.fi","Line2":null,"EnvName":"Finland"},"othpubs":null,"ownerships":null,"authors":[{"AutName":"Lehtonen","Firstname":"Kari","Initials":"K.K.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":63403,"AutID":39467,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":351814,"LibID":36,"BRefID":67036,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":null,"ShelfLocCode":"351814","RFID":null,"PaidValue":null,"Medium":"Server","Description":"Interne VLIZ documenten","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Non-open access","URL":null,"ClassifID":228,"Classification":"Non-open access","ReqLink":1,"ClassifTypID":3,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":1,"LoggedInReq":1,"Disclaimer":"Disclaimer_VLIZ_Intern","DutchDisclaimer":"<p>Deze publicatie is enkel beschikbaar voor persoonlijk gebruik binnen de Innovocean site <br />en mag op geen enkele manier verder worden verspreid.</p>","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":[{"PublName":"Springer","City":"Dordrecht; London; Boston"}],"MONpubls":null,"pictures":[],"thestermsPath":[{"ThesaurusTerm":"ANE, Baltic, Riga Gulf","ThestID":181807,"Acronym":"ASFA_GEOT","ThesTermPath":"ANE, Baltic, Riga Gulf"},{"ThesaurusTerm":"Baltic Sea","ThestID":69807,"Acronym":"CSA","ThesTermPath":"Baltic Sea"},{"ThesaurusTerm":"Lipids","ThestID":4763,"Acronym":"ASFA","ThesTermPath":"Chemical compounds > Organic compounds > Lipids"},{"ThesaurusTerm":"Gulf of riga","ThestID":152549,"Acronym":"CAB","ThesTermPath":"Hydrographic features > Gulfs > Baltic sea > Gulf of riga"},{"ThesaurusTerm":"Baltic sea","ThestID":117035,"Acronym":"CAB","ThesTermPath":"Hydrographic features > Marine areas > Seas > Northeast atlantic > Baltic sea"},{"ThesaurusTerm":"Seasonal variation","ThestID":149776,"Acronym":"CAB","ThesTermPath":"Variation > Temporal variation > Seasonal variation"}],"thestermsASFA":[{"ThesaurusTerm":"ANE, Baltic, Riga Gulf"},{"ThesaurusTerm":"Baltic Sea"},{"ThesaurusTerm":"Baltic sea"},{"ThesaurusTerm":"Gulf of riga"},{"ThesaurusTerm":"Lipids"},{"ThesaurusTerm":"Seasonal variation"}],"taxtermsASFA":[{"TaxTerm":"Monoporeia affinis"},{"TaxTerm":"Pontoporeia femorata"}],"geotermsASFA":[{"GeoTerm":"Gulf of Riga"}],"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":null,"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":63403,"AbstractFlag":-1,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":63403,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":[{"URL":"https://dx.doi.org/10.1023/b:aeco.0000035165.97619.78","externalID":"10.1023/b:aeco.0000035165.97619.78","URLTypeCode":"DOI","URLID":3120,"URLTypID":13,"URLType":"DOI","URLPrefix":"http://dx.doi.org/"}],"thesterms":[{"ThesaurusTerm":"ANE, Baltic, Riga Gulf","ThestID":181807,"Acronym":"ASFA_GEOT","ThesTypID":34,"ThesType":"ASFA Geoterms"},{"ThesaurusTerm":"Baltic Sea","ThestID":69807,"Acronym":"CSA","ThesTypID":2,"ThesType":"CSA Technology Research Database Master Thesaurus"},{"ThesaurusTerm":"Baltic sea","ThestID":117035,"Acronym":"CAB","ThesTypID":4,"ThesType":"CAB Thesaurus"},{"ThesaurusTerm":"Gulf of riga","ThestID":152549,"Acronym":"CAB","ThesTypID":4,"ThesType":"CAB Thesaurus"},{"ThesaurusTerm":"Lipids","ThestID":4763,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Seasonal variation","ThestID":149776,"Acronym":"CAB","ThesTypID":4,"ThesType":"CAB Thesaurus"}],"taxterms":[{"TaxTerm":"Monoporeia affinis","AphiaID":103077,"TaxtID":25123},{"TaxTerm":"Pontoporeia femorata","AphiaID":103079,"TaxtID":23185}],"geoterms":[{"GeoTerm":"Gulf of Riga","GeoObjectID":2409,"GeotID":89}],"othterms":[{"OtherTerm":"Ammonia excretion","OthtID":2115},{"OtherTerm":"Benthic amphipods","OthtID":2291}],"asfacodes":null,"asfa2codes":null,"thestermsFRIS":[{"ThesaurusTerm":"ANE, Baltic, Riga Gulf","DutchTerm":null,"ThestID":181807,"Acronym":"ASFA_GEOT","ThesTypID":34,"ThesType":"ASFA Geoterms"},{"ThesaurusTerm":"Baltic Sea","DutchTerm":null,"ThestID":69807,"Acronym":"CSA","ThesTypID":2,"ThesType":"CSA Technology Research Database Master Thesaurus"},{"ThesaurusTerm":"Baltic sea","DutchTerm":null,"ThestID":117035,"Acronym":"CAB","ThesTypID":4,"ThesType":"CAB Thesaurus"},{"ThesaurusTerm":"Gulf of riga","DutchTerm":null,"ThestID":152549,"Acronym":"CAB","ThesTypID":4,"ThesType":"CAB Thesaurus"},{"ThesaurusTerm":"Lipids","DutchTerm":"Vetten","ThestID":4763,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"},{"ThesaurusTerm":"Seasonal variation","DutchTerm":null,"ThestID":149776,"Acronym":"CAB","ThesTypID":4,"ThesType":"CAB Thesaurus"}],"taxtermsFRIS":[{"TaxTerm":"Monoporeia affinis","DutchTerm":null,"AphiaID":103077,"TaxtID":25123},{"TaxTerm":"Pontoporeia femorata","DutchTerm":null,"AphiaID":103079,"TaxtID":23185}],"geotermsFRIS":[{"GeoTerm":"Gulf of Riga","DutchTerm":null}],"othtermsFRIS":[{"OtherTerm":"Ammonia excretion","DutchTerm":null,"OthtID":2115},{"OtherTerm":"Benthic amphipods","DutchTerm":null,"OthtID":2291}],"resmessage":"","complete":1,"sessions":{"newSesName":"Chisala, Chilekwa, C.","newSesDate":{"date":"2004-10-12 12:04:41.827000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Bouchti, Zohra, Z.","updSesDate":{"date":"2020-10-05 07:00:25.293000","timezone_type":3,"timezone":"Europe/Brussels"}}}