Environmental parameters affecting plant productivity and microbial respiration, such as water level, salinity, and groundwater temperature included in these datasets, are key components of wetland carbon cycling, carbon storage, and capacity to maintain elevation. Data were collected to (1) provide background data to evaluate potential differences in water level and carbon flux between wetland sites with differing elevation and tidal inundation and (2) facilitate applications of Blue Carbon projects in coastal wetlands. Associated child pages include continuous water level, salinity, and temperature from shallow wells installed in coastal wetland sites on Cape Cod, Massachusetts. These datasets are grouped by the project they support or by study site. Project study sites include salt marshes with natural tidal flow, salt marshes that were previously tidally restricted and have been restored, impounded coastal wetlands with restricted tidal flow inclusive of various vegetation types, and Phragmites dominated areas fringing natural salt marshes.
For several decades, local towns, conservation groups, and government organizations have worked to identify, replace, repair, and enlarge culverts to restore tidal flow upstream from historical tidal restrictions in an effort to restore salt marsh ecosystems on Cape Cod, Massachusetts. Undersized or failed culverts restrict tidal exchange between the marsh and the bays and estuaries, which leads to alterations in plant community composition and in fundamental processes controlling soil carbon accumulation, soil carbon transformations, and greenhouse gas emissions. In this study, sites were selected to compare salt marshes restored over a range of years and to compare marshes upstream and downstream from a restored tidal restriction. Salt marshes downstream from tidal restrictions represent "natural" conditions because hydrology was not substantially altered, whereas marshes upstream from repaired culverts represent "restored" conditions.
Ground Condition. Refer to the entity SensorDeploymentHeights_2019.csv for sensor deployment periods. Also check within the datafile for exact time period of data collection for each sensor. All sensors were not collecting data at all locations for the entire study period; refer to the completeness section of this metadata record for explanations of gaps in the continuous record.
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: wetland ecosystems
Theme_Keyword: water temperature
Theme_Keyword: groundwater level
Theme_Keyword: surface-water level
Theme_Keyword: field experiments
Theme_Keyword: field inventory and monitoring
Theme_Keyword: CTD measurement
Theme_Keyword_Thesaurus: National Agricultural Library Thesaurus
Theme_Keyword: salt marshes
Theme_Keyword: wetland soils
Theme_Keyword: ecological restoration
Theme_Keyword: atmospheric pressure
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: water level measurements
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Cape Cod (606914)
Place_Keyword: Barnstable County (606927)
Place_Keyword: Commonwealth of Massachusetts (606926)
Place_Keyword: Boat Meadow River (616844)
Place_Keyword: Town of Orleans (618257)
Place_Keyword: Town of Eastham (619414)
Place_Keyword: Dock Creek (616591)
Place_Keyword: Mill Creek (616621)
Place_Keyword: Town of Sandwich (618259)
Place_Keyword: Cape Cod Canal (619536)
Place_Keyword: Scusset Beach (616340)
Place_Keyword: Sagamore Beach (617797)
Place_Keyword: Bass Creek (617465)
Place_Keyword: Town of Bourne (619412)
Originator: O'Keefe Suttles, Jennifer A.
Originator: Brosnahan, Sandra M.
Originator: Gonneea, Meagan E.
Originator: Kroeger, Kevin D.
Continuous monitoring data from natural and restored salt marshes on Cape Cod, Massachusetts, 2016-17
Geospatial_Data_Presentation_Form: tabular digital data
Series_Name: data release
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Associated data release with similar data types for additional sites referenced in the associated journal article.