{"refrec":{"BRefID":75151,"RR":"<b>Gottlieb, A.; Richards, J.; Gaiser, E.</b> (2005). Effects of desiccation duration on the community structure and nutrient retention of short and long-hydroperiod Everglades periphyton mats. <i>Aquat. Bot. 82(2)</i>: 99-112. <a href=\"https://dx.doi.org/10.1016/j.aquabot.2005.02.012\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquabot.2005.02.012</a>","BEntID":70834,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Aquat. Bot. 82(2)</i>: 99-112. <a href=\"https://dx.doi.org/10.1016/j.aquabot.2005.02.012\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquabot.2005.02.012</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Gottlieb, A.; Richards, J.; Gaiser, E.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Gottlieb, A.; Richards, J.; Gaiser, E.","Englishabstract":"Responses of periphyton communities to different relevant durations of dry down were assessed. Long-hydroperiod sites within Everglades National Park remain wet for greater than 8 months of the year while short-hydroperiod mats are wet for fewer than 4 months of the year. Dry down duration of long and short-hydroperiod Everglades periphyton was manipulated from 0 to 1, 3, or 8 months after which periphyton was rewetted 1 month and examined for algal species composition. The effects of desiccation and rewetting on periphyton nutrient retention were also assessed. Relative abundance of diatoms declined from an average of 47% in the long-hydroperiod community at the start of the experiment to 24% after 1 month of desiccation and only 12% after 8 months of desiccation. Short-hydroperiod periphyton contained a lower proportion of diatoms at the outset (3%), which declined to less than 1% after the 8-month desiccation treatment. A significant increase in the filamentous cyanobacteria <i>Schizothrix calcicola</i> occurred in long-hydroperiod periphyton mats during this same period, but not in short-hydroperiod mats. Long-hydroperiod periphyton communities had a greater response to desiccation overall, but short-hydroperiod community structure responded to desiccation more rapidly. Because short-hydroperiod communities dry frequently, they appear to cope better to desiccating conditions than long-hydroperiod periphyton communities. This is indicated by the dominance of desiccation resistant algal taxa such as the cyanobacterial filaments <i>S. calcicola</i> and <i>Scytonema hofmanni</i>. Long-hydroperiod periphyton mat communities converge compositionally to short-hydroperiod periphyton communities after prolonged desiccation. Desiccation and rewetting caused long-hydroperiod periphyton to flux greater concentrations of nutrients than short-hydroperiod periphyton. Significant increases in efflux occurred from 1 to 8 months for total phosphorus (TP) and from 1 to 3 and 8 months for total nitrogen (TN) and total organic carbon (TOC). Thus, changes in periphyton mat community structure and function with altered hydroperiod may have long-term ecosystem effects.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Effects of desiccation duration on the community structure and nutrient retention of short and long-hydroperiod Everglades periphyton mats","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-14 01:31:11.437719","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"algal assemblages; nutrient fluxes; drying; diatoms; Schizothrix;Scytonema","OtherDescriptors":null,"Notes":null,"AnaPub":2005,"MonPub":null,"DateUpdate":"2020-10-12","DateCreate":"2005-08-02","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000230323500004","VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":75151,"PubliDate":2005,"Pagination":"99-112","XtraPublOfAnaID":null,"ISBN":null,"Volume":"82","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42195,"SerRR":"Aquatic Botany. 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