{"refrec":{"BRefID":362289,"RR":"<b>Zilius, M.; Daunys, D.; Bartoli, M.; Marzocchi, U.; Bonaglia, S.; Cardini, U.; Castaldelli, G.</b> (2022). Partitioning benthic nitrogen cycle processes among three common macrofauna holobionts. <i>Biogeochemistry 157(2)</i>: 193-213. <a href=\"https://dx.doi.org/10.1007/s10533-021-00867-8\" target=\"_blank\">https://dx.doi.org/10.1007/s10533-021-00867-8</a>","BEntID":360005,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Biogeochemistry 157(2)</i>: 193-213. <a href=\"https://dx.doi.org/10.1007/s10533-021-00867-8\" target=\"_blank\">https://dx.doi.org/10.1007/s10533-021-00867-8</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Zilius, M.; Daunys, D.; Bartoli, M.; Marzocchi, U.; Bonaglia, S.; Cardini, U.; Castaldelli, G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Zilius, M. <i>et al.</i>","Englishabstract":"The effects of single macrofauna taxa on benthic nitrogen (N) cycling have been extensively studied, whereas how macrofaunal communities affect N-related processes remains poorly explored. In this study, we characterized benthic N-cycling in bioturbated sediments of the oligotrophic Öre Estuary (northern Baltic Sea). Solute fluxes and N transformations (N<sub>2</sub> fixation, denitrification and dissimilative nitrate reduction to ammonium [DNRA]) were measured in sediments and macrofauna-associated microbes (holobionts) to partition the role of three dominant taxa (the filter feeder <i>Limecola balthica</i>, the deep deposit feeder <i>Marenzelleria</i> spp., and the surface deposit feeder <i>Monoporeia affinis</i>) in shaping N-cycling. In the studied area, benthic macrofauna comprised a low diversity community with dominance of the three taxa, which are widespread and dominant in the Baltic. The biomass of these taxa in macrofaunal community explained up to 30% of variation in measured biogeochemical processes, confirming their important role in ecosystem functioning. The results also show that these taxa significantly contributed to the benthic metabolism and N-cycling (direct effect) as well as to sediments bioturbation with positive feedback to dissimilative nitrate reduction (indirect effect). Taken together, these functions promoted a reuse of nutrients at the benthic level, limiting net losses (e.g. denitrification) and effluxes to bottom water. Finally, the detection of multiple N transformations in macrofauna holobionts suggested a community-associated versatile microbiome, however, its role was of minor importance as compared to the activity of sediment-associated microbial communities. The present study highlights hidden and interactive effects among microbes and macrofauna, which should be considered analysing benthic functioning.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Partitioning benthic nitrogen cycle processes among three common macrofauna holobionts","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":"Benthic functioning; Invertebrate-microbe associations; Nitrogen cycle; Nitrate reduction; Sediments; Baltic Sea","OtherDescriptors":null,"Notes":null,"AnaPub":2022,"MonPub":null,"DateUpdate":"2023-03-20","DateCreate":"2023-03-17","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000707515900001","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s10533-021-00867-8"},"refs":null,"anarec":{"AnaID":362289,"PubliDate":2022,"Pagination":"193-213","XtraPublOfAnaID":null,"ISBN":null,"Volume":"157","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45092,"SerRR":"Biogeochemistry. 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