{"refrec":{"BRefID":339876,"RR":"<b>Santos, T.M.T.; Petracco, M.; Venekey, V.</b> (2021). Recreational activities trigger changes in meiofauna and free-living nematodes on Amazonian macrotidal sandy beaches. <i>Mar. Environ. Res. 167</i>: 105289. <a href=\"https://dx.doi.org/10.1016/j.marenvres.2021.105289\" target=\"_blank\">https://dx.doi.org/10.1016/j.marenvres.2021.105289</a>","BEntID":336511,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Mar. Environ. Res. 167</i>: 105289. <a href=\"https://dx.doi.org/10.1016/j.marenvres.2021.105289\" target=\"_blank\">https://dx.doi.org/10.1016/j.marenvres.2021.105289</a>","DocTypID":16,"DocType":"Journal","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Santos, T.M.T.; Petracco, M.; Venekey, V.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Santos, T.M.T.; Petracco, M.; Venekey, V.","Englishabstract":"Sandy beaches are key economic assets worldwide, however, recreational activities are an important source of disturbance in these ecosystems. Intensive human use of beaches has a negative effect on benthic communities as it alters species abundance, diversity, and/or distribution. Here, we report the impacts of recreational activities (trampling and vehicles) on meiobenthic communities and nematode assemblages on Amazonian sandy beaches for the first time. For this purpose, samples were carried out in four consecutive months encompassing a period of high visitation peak (one month Before Vacation, During Vacation, and two months After Vacation) on three contrasting beaches regarding disturbances (Urban: Atalaia; Intermediary: Farol-Velho; and Protected: Corvinas) at seven equidistant sampling stations (50 m apart) from the high tide water mark to the swash zone. At each sampling station, three biological samples and sediments samples were collected haphazardly. Also, in each station, the sediment compaction was determined using a manual penetrometer. Overall, physical sediment variables (grain size, sorting) were constant over time in all beaches, whereas differences in intensity of recreational activities and sediment compaction were found between beaches and months. Sediment compaction was considered the most important factor for the differences observed in meiofauna community structure in the study areas, and it was related to intensity of recreational activities. Variations in density and changes in richness between periods were observed in Atalaia and Farol-Velho beaches. On the other hand, Corvinas beach remained the same throughout the study. In the first month after vacation, density and richness were similar to those in the period before vacation, thus indicating that the beaches had recovered in one month. Furthermore, vulnerabilities of Tardigrada and Copepoda, as well as of the Nematoda genera <i>Daptonema</i>, and <i>Chromadorita</i>, indicate that they might be potential indicators of recreational activities.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Recreational activities trigger changes in meiofauna and free-living nematodes on Amazonian macrotidal sandy beaches","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-14 01:31:59.754603","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Amazon coast, Benthic fauna, Human-induced impacts, Sandy beach","OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2021-07-09","DateCreate":"2021-07-08","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000651797100008","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.marenvres.2021.105289"},"refs":null,"anarec":{"AnaID":339876,"PubliDate":2021,"Pagination":"105289","XtraPublOfAnaID":null,"ISBN":null,"Volume":"167","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43357,"SerRR":"Marine Environmental Research. 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