Periphyton Biomass Accumulation from the Shark River and Taylor Sloughs, Everglades National Park (FCE LTER), South Florida, USA, January 2003 - ongoing

Periphyton biomass was measured bimonthly at FCE LTER sites in Shark Slough. Fifteen 9.8 cm2 cores were removed from the floating periphyton mat and composited into a single sample. Percent aerial cover of floating periphyton was estimated visually in the field. Data are presented in terms of grams dry and ash-free dry mass per area. Total phosphorus, nitrogen and carbon concentration in the periphyton mat is also presented on a dry weight basis. This is part of a continuous data collection to test the hypothesis that phosphorus and nitrogen limit productivity at the upstream and downstream ends, respectively, of the FCE transects. Conclusions await longer-term data collection.

周丛生物（periphyton）生物量于鲨鱼沼泽的FCE LTER站点每两个月测定一次。从漂浮周丛生物垫上采集15个面积为9.8 cm²的岩芯样品，混合为单一样本。野外通过目视法估算漂浮周丛生物的空中盖度百分比。数据以每单位面积的干重及无灰干重（ash-free dry mass）形式呈现。周丛生物垫中的总磷、总氮与总碳浓度同样以干重基准给出。本数据集属于连续监测计划的一部分，旨在验证“磷与氮分别限制FCE样带上游与下游区域生产力”的假说。相关结论仍需依托更长时间序列的监测数据方可得出。