Field survey and long-term measurements of biological, geomorphic, and hydrologic properties across ecosystem states in a non-tidal, salinizing peat marsh in Everglades National Park, Florida, USA, June 2018 - ongoing

This dataset package details a field survey and long-term measurements of biological, geomorphic, and hydrologic properties across ecosystem states found within a salinizing, non-tidal peat marsh in the coastal Everglades. There are four datasets included: FCE1250_Lamb_AltStableState_HydroGeo includes point measurements of soil surface elevation, bedrock elevation, soil depth, water depth, and porewater salinity across ecosystem states: emergent marsh (sawgrass dominated), submerged marsh (submerged aquatic vegetation), and unvegetated open water. The survey was conducted between November 2019 to January 2020. FCE1250_Lamb_AltStableState_Bio contains plot-scale (1 m^2) biological measurements from emergent marsh (sawgrass). Biological measurements (total sawgrass, average individual sawgrass biomass, and total sawgrass aboveground biomass), are inherently plot-level but geomorphic and hydrologic measurements were averaged (n = 3) for each plot. Standard deviations are provided. FCE1250_Lamb_AltStableState_Bio_LongTerm contains biological plot-scale (1 m^2) measurements at a bi-monthly timestep from Nov 2019 - July 2022 from a subset of plots (n = 9) included in the FCE_1250_Lamb_AltStableState_Bio dataset. Each bi-monthly measurement is the average value across all 9 nine plots. Standard deviations are also included. FCE_1250_Lamb_AltStableState_SETMH contains long-term measurements of soil surface elevation change and vertical accretion from surface elevation change and marker horizon plots from June 2018 - May 2023. Average and standard errors across all plots are included as well as measurements from each plot. Also included is the cumulative number of dry days based on the average soil surface elevation for all plots. Data collection for all datasets is complete, except for FCE_1250_Lamb_AltStableState_SETMH. SET-MH measurements are still ongoing.

本数据集套件详细记录了沿海大沼泽地（Everglades）一处盐化无潮汐泥炭沼泽内不同生态系统状态下的生物学、地貌学与水文学属性野外调查及长期监测数据。本数据集包含4个子集：FCE1250_Lamb_AltStableState_HydroGeo包含不同生态系统状态下的土壤地表高程、基岩高程、土壤厚度、水深及孔隙水盐度点位测量数据，涉及的生态系统状态包括：挺水沼泽（以锯草为优势种）、沉水沼泽（覆盖沉水水生植被）以及无植被开阔水域，本次野外调查于2019年11月至2020年1月期间开展。FCE1250_Lamb_AltStableState_Bio包含挺水沼泽（锯草群落）的1平方米样地尺度生物学测量数据，测量指标包括锯草总生物量、单株锯草平均生物量及锯草地上总生物量，此类数据为样地级观测结果；同时针对每个样地的地貌与水文学测量结果取3次重复的平均值，并提供了标准差。FCE1250_Lamb_AltStableState_Bio_LongTerm包含2019年11月至2022年7月期间以双月为时间步长的1平方米样地尺度生物学监测数据，数据集源自FCE_1250_Lamb_AltStableState_Bio中的9个样地子集，每一次双月测量结果为全部9个样地的平均值，同时附带标准差。FCE1250_Lamb_AltStableState_SETMH包含2018年6月至2023年5月期间通过地表高程变化（Surface Elevation Change, SET）与标记层位（Marker Horizon, MH）样地获取的土壤地表高程变化与垂直加积速率长期监测数据，数据集提供了全部样地的平均值与标准误差，同时包含单样地测量结果；此外还提供了基于所有样地平均地表高程计算的累计干旱天数。所有数据集的采集工作均已完成，仅FCE1250_Lamb_AltStableState_SETMH除外，该数据集的SET-MH监测仍在进行中。