{"refrec":{"BRefID":368004,"RR":"<b>Zhao, Z.; Zhang, L.; Yuan, L.; Bouma, T.J.</b> (2023). Seed settling and trapping during submerged secondary dispersal: implications for saltmarsh recruitment and restoration. <i>J. Environ. Manage. 348</i>: 119301. <a href=\"https://dx.doi.org/10.1016/j.jenvman.2023.119301\" target=\"_blank\">https://dx.doi.org/10.1016/j.jenvman.2023.119301</a>","BEntID":365730,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Environ. Manage. 348</i>: 119301. <a href=\"https://dx.doi.org/10.1016/j.jenvman.2023.119301\" target=\"_blank\">https://dx.doi.org/10.1016/j.jenvman.2023.119301</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Zhao, Z.; Zhang, L.; Yuan, L.; Bouma, T.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Zhao, Z. <i>et al.</i>","Englishabstract":"Given the decline of global salt marshes, there is a pressing need to pinpoint the key processes that limit and facilitate seed-based pioneer recruitment. Secondary seed dispersal, in the form of short-distance submerged movement, is a prerequisite for initiating pioneer establishment in adjacent tidal flats but has not been fully appreciated and understood. In this study, using a settling tube and race-track flume, seeds of four global occurring saltmarsh species were studied in terms of their settlement speed and trapping opportunity to understand how seed traits and physical settings affect submerged dispersal behavior and thus seed-based saltmarsh recruitment. Present study led to the following novel insights: 1) Seeds have density-dependent settling speeds, which are comparable to that of fine sand, but much faster than that of very fine sand and silt. Since the latter is the type of sediment commonly found in many estuaries worldwide (such as the Scheldt), seeds will typically settle faster than local sediments. A sufficiently long hydrodynamic-calm period allows slowly settling sediment to bury settled seeds, otherwise, seeds will remain uncovered if the period is short. 2) Seed trapping ratio increased linearly with surface roughness (a proxy for local topographic complexity), but this effect becomes smaller with increasing hydrodynamic intensity. Seed drag coefficient was identified as the key biotic factor contributing to interspecies variability in trapping ratio. Overall, present results suggest that submerged seed dispersal may form a primary bottleneck for salt marsh recruitment by limiting seed availability via two mechanisms: i) reduced chance of seed burial through asynchronous settling of seeds and sediment particles; ii) reduced probability of seed trapping due to encountering smooth tidal flat surfaces. This study provide mechanistic and data basis for the targeted application of biophysical models in predicting outcomes of saltmarsh recruitment and long-term maintenance, thereby informing seed-based conservation and restoration.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Seed settling and trapping during submerged secondary dispersal: implications for saltmarsh recruitment and restoration","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-19 01:32:22.674608","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Salt marshes; Tidal flats; Seed dispersal; Sediment settlement; Surface roughness; Seed-based restoration","OtherDescriptors":null,"Notes":null,"AnaPub":2023,"MonPub":null,"DateUpdate":"2023-11-15","DateCreate":"2023-10-16","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001099719000001","VABBcode":null,"OpenAcc":1,"DOI":"10.1016/j.jenvman.2023.119301"},"refs":null,"anarec":{"AnaID":368004,"PubliDate":2023,"Pagination":"119301","XtraPublOfAnaID":null,"ISBN":null,"Volume":"348","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43053,"SerRR":"Journal of Environmental Management. 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