Bacterial dynamics in tidal marsh creeks of the Eastern Shore of Virginia 1992-1993

There are 4 summary text files with data in fixed-width columns and 3 archives of raw data stored in either QuatroPro or Lotus123 files pkzipped together. The summary files are: conditio.txt : physical conditions of the creeks sampled during June91, July91, and Jan92. For each month, variables are: creek name, location : (U=upper reach L=lower reach), air temperature (degrees C), water temperature (degrees C),oxygen concentration (mg/L), salinity (ppt) surveys.txt : bacterial parameters and aspects of water quality for three seaside and three bayside tidal marsh creeks during June91, July91, and Jan92. For each record, the variables are: Time (REALLY month),creek name : (seaside=phillips creek(PC), greens creek(GC), box tree creek(BT), bayside=hungars creek(HC), nassawadox creek(NC), cherrystone creek(CS)), location : (U=upper reach L=lower reach), bacterial abundance (cells/mL), bacterial biovolume (ng C/mL), bacterial productivity (cells/mL/hr), bacterial productivity (ng C/mL/hr), DOC (mg/L) : dissolved oxygen concentration, POC (mg/L) : TSS (mg/L) : total suspended solids, OM (mg/L) : organic matter, chlorophyll (ug/L), phosphate (uMz), ammonia (uM), nitrate (uM), nitrite (uM) enrich.txt : bacterial parameters and dissolved organic carbon concentrations when two different communities of bacteria were incubated with two different types of DOC. Mean values of all parameters measured in enrichment experiment. Values are mean of three replicate flasks. For each record, the variables are: condition, coded as follows PP = Phillips Creek bacteria, phytoplankton derived DOC PS = Phillips Creek bacteria, marsh grass derived DOC HP = Hungars Creek bacteria, phytoplankton derived DOC HS = Hungars Creek bacteria, marsh grass derived DOC time (hours) Abundance (cells/mL) Biovolume (um^3) Biomass (ng C/mL) Productivity (ng C/mL/hr) Turnover (hr) DOC (mg/L) uptake.txt : bacterial uptake of carbon when two different communities of bacteria were incubated with two different types of DOC. Values for all parameters calculated for bacterial utilization of DOC. Values are the mean of three replicates. For each record, the variables are: condition, coded as follows PP = Phillips Creek bacteria, phytoplankton derived DOC PS = Phillips Creek bacteria, marsh grass derived DOC HP = Hungars Creek bacteria, phytoplankton derived DOC HS = Hungars Creek bacteria, marsh grass derived DOC substrate added (mg/L) *missing value= "-"* DOC Mineralized (ng C/mL) DOC Assimilated (ng C/mL) total uptake (ng C/mL) percent assimulated (%) The RAW DATA is stored in 3 sets of Quatro Pro WQ1 or Lotus 123 WK1 files that have been archived with PKZIP . variables are explained in each file: july91.zip : bacterial biovolumes July 1991. raw files: volpc.wq1, volgc.wq1, volbt.wq1, volhc.wq1, volnc.wq1, volcs.wq1 jan92.zip : bacterial biovolumes Jan 1992. raw files: volpc.wq1, volgc.wq1, volbt.wq1, volhc.wq1, volnc.wq1, volcs.wq1 enrich.zip : distribution of bacterial biovolumes and carbon for the enrichment experiment. raw files: volpp.wk1, volps.wk1, volhpb.wk1, volhpc.wk1, volhsb.wk1, volhsc.wk1本数据集包含4份采用固定列宽格式存储的汇总文本文件，以及3组经PKZIP压缩归档的原始数据档案，原始数据以QuatroPro或Lotus123格式存储。 1. conditio.txt：记录了1991年6月、1991年7月及1992年1月期间采样的溪流物理环境参数。每份月度记录包含以下变量：溪流名称、采样点位（U代表上游河段，L代表下游河段）、气温（摄氏度）、水温（摄氏度）、溶解氧浓度（毫克/升）、盐度（ppt）。 2. surveys.txt：记录了1991年6月、1991年7月及1992年1月期间，3条滨海潮汐溪流与3条海湾潮汐溪流的细菌学参数及水质相关指标。每条记录包含以下变量：采样时间（实际对应采样月份）、溪流名称（滨海类包括Phillips溪(PC)、Greens溪(GC)、Box Tree溪(BT)；海湾类包括Hungars溪(HC)、Nassawadox溪(NC)、Cherrystone溪(CS)）、采样点位（U为上游河段，L为下游河段）、细菌丰度（细胞/毫升）、细菌生物体积（纳克碳/毫升）、细菌生产力（细胞/毫升/小时）、细菌生产力（纳克碳/毫升/小时）、溶解有机碳（Dissolved Organic Carbon, DOC，毫克/升）、溶解氧浓度、颗粒有机碳（Particulate Organic Carbon, POC，毫克/升）、总悬浮固体（Total Suspended Solids, TSS，毫克/升）、有机质（Organic Matter, OM，毫克/升）、叶绿素（微克/升）、磷酸盐（μM）、氨（μM）、硝酸盐（μM）、亚硝酸盐（μM）。注：原文中"uMz"应为笔误，统一修正为μM。 3. enrich.txt：记录了两组不同细菌群落分别添加两种DOC底物后的细菌学参数与溶解有机碳浓度，包含富集培养实验中所有测定参数的平均值，所有数值均为3次重复烧瓶实验的均值。每条记录包含以下变量：实验条件（编码规则如下：PP=Phillips溪细菌+浮游植物衍生DOC；PS=Phillips溪细菌+盐沼草衍生DOC；HP=Hungars溪细菌+浮游植物衍生DOC；HS=Hungars溪细菌+盐沼草衍生DOC）、培养时间（小时）、丰度（细胞/毫升）、生物体积（立方微米）、生物量（纳克碳/毫升）、生产力（纳克碳/毫升/小时）、周转时间（小时）、DOC浓度（毫克/升）。 4. uptake.txt：记录了两组不同细菌群落分别添加两种DOC底物后的细菌碳摄取情况，所有参数均基于细菌对DOC的利用计算得到，数值为3次重复实验的均值。每条记录包含以下变量：实验条件（编码规则同enrich.txt）、添加底物浓度（毫克/升，缺失值标记为"-"）、矿化DOC（纳克碳/毫升）、同化DOC（纳克碳/毫升）、总摄取量（纳克碳/毫升）、同化百分比（%）。 原始数据存储于3组QuatroPro WQ1或Lotus123 WK1格式文件中，已通过PKZIP进行归档。各文件的变量说明详见对应文件： - july91.zip：1991年7月的细菌生物体积原始数据，包含以下文件：volpc.wq1、volgc.wq1、volbt.wq1、volhc.wq1、volnc.wq1、volcs.wq1 - jan92.zip：1992年1月的细菌生物体积原始数据，包含以下文件：volpc.wq1、volgc.wq1、volbt.wq1、volhc.wq1、volnc.wq1、volcs.wq1 - enrich.zip：富集培养实验的细菌生物体积与碳分布原始数据，包含以下文件：volpp.wk1、volps.wk1、volhpb.wk1、volhpc.wk1、volhsb.wk1、volhsc.wk1