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Wetland perimeters for monitored wetlands at Saint Marks National Wildlife Refuge: July 2010 - May 2019 (version. 2.0, August 2022)

Metadata Updated: July 6, 2024

This dataset contains boundary polygons from 59 wetlands, that were monitored as part of the U.S. Geological Survey (USGS) Amphibian Research and Monitoring Initiative (ARMI) from Saint Marks National Wildlife Refuge (SMNWR). These sites covered a range of sizes, shapes, topographic and vegetative characteristics that were deemed to be representative of wetlands within the study area. Ground-based surveys of wetland perimeters were made using a Trimble R8 Real Time Kinematic Global Positioning System (RTK-GPS). Surveys generally followed the lowest extent of saw palmetto (Serenoa repens), which is a reliable indicator of the upper limits (elevation) of sustained inundation. In instances where palmetto was absent, margins were identified based on the lower limits of gallberry (Ilex sp.) and/or the upper extent of titi (Cyrilla/Cliftonia). These species occupied similar hydrologic and elevation zones as saw palmetto and, therefore, considered to also be reliable indicators of a wetland’s edge. GPS points were collected along this vegetative margin to represent the size and general shape of each wetland. In cases where dense vegetation prevented surveying the complete margin, we used elevation contours to connect distant points when digitizing perimeters. For a subset of wetlands that were not surveyed in the field on screen digitizing was used to construct the boundaries. When using this latter approach multiple layers were used to help identify the boundary including the national wetlands inventory, aerial imagery, and a lidar derived digital elevation model. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Identifier USGS:5798b2a4e4b0589fa1c7282b
Data Last Modified 20220808
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 320438b7-6118-403d-8f7e-66a62d08109d
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -84.47073,29.99362,-84.3809,30.08668
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash a0884224d45587166998c4fab58349a4d4e40140bbb51b55cd2c1bf41cc0cf4d
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -84.47073, 29.99362, -84.47073, 30.08668, -84.3809, 30.08668, -84.3809, 29.99362, -84.47073, 29.99362}

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