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Wetland plants of the Yellowknife Study Area, 1961-1962

Metadata Updated: October 28, 2023

The Yellowknife Study Area (YSA),Northwest Territories, Canada, was established in 1961 by H. W. Murdy, U.S. Fish and Wildlife Service, for the study of wetland and waterfowl ecology. The study area is located on the western edge of the Precambrian Shield and edge of the taiga and is recognized for its high wetland densities and waterfowl abundance. The region is underlain by discontinuous, warm permafrost and hence vulnerable to a warming climate. The completion of Highway 3 in early 1960s provided the first access to the region for development, research, and monitoring. The YSA is a 38-square km area centered on Highway 3, extending 48 km in length. In the 1960s, it encompassed 262 natural ponds and 313 man-made ponds created by highway construction, and portions of the original 1960s highway surface were removed. Within the first 6 years following highway construction in 1961, Murdy collected extensive data on the YSA’s wetlands and waterfowl. In 1961-1962 he recorded wetland plant species occurring in each of the 236 ponds and categorized their abundance. Murdy died before he was able to analyze or publish the wetland data. The original data and aerial photographs are archived at the U.S. Geological Survey, Northern Prairie Wildlife Research Center. The unpublished wetland data described here provide a unique opportunity to investigate long-term changes in wetland plant communities and effects of road building. Related are three datasets describing other aspects of the YSA ponds (see Northern Prairie Wildlife Research Center, 2017, Wetlands of the Yellowknife Study Area, 1963-1965: Characteristics. U.S. Geological Survey data release, https:/ Other data in archived files but not entered or digitally archived include depth to permafrost, selected upland plant communities, weather data, and phenology of plants and waterfowl, among other information.

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 October 28, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023
Publisher U.S. Geological Survey
Identifier USGS:5aeb342ee4b0860c0f7276f7
Data Last Modified 20220421
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 0dc951f6-3862-482e-83a7-930e4f2a9836
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -115.498998,62.469582,-114.667906,62.704083
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash fbe82ab4435058b8440e8c03126e86b5e222bb0db7f1ac5f5c73b602d3227411
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -115.498998, 62.469582, -115.498998, 62.704083, -114.667906, 62.704083, -114.667906, 62.469582, -115.498998, 62.469582}

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