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Title: Pond Area Estimates: Nine Study Regions in Alaska for 3 time periods (1950s, 1978-1982, 1999-2001) using remotely sensed images
Creator(s): Riordan, Brian (M.S. Student)
Verbyla, Dave (Senior Investigator)
Associated Personnel : McGuire, A. (Graduate Student Advisor)
Verbyla, Dave (Graduate Student Advisor)
Abstract: The data are ArcGIS shapefiles by USGS quadrangle within 9 study regions: Arctic Coastal Plain, Stevens Village area, Yukon Flats, Minto Flats, Denali Flats, Talkeetna, Innoko Flats, Tetlin Flats, and Copper River Basin. Each shapefile polygon represents the shoreline of a pond as visually interpreted from each georectified remotely sensed image. All images were rectified based on at least 25 control points from 1:63 360 USGS digital raster graphics topographic maps using a second-order polynomial with a RMS error of less than one satellite image pixel (30 meters). All closed-basin ponds greater than 0.2 hectares were visually delineated and manually traced as polygons using ArcGIS. Each pond polygon has an ID and Hectares field representing the pond ID and area in hectares for the time period of the remotely sensed image.
Keywords: primary production,  remote sensing, 
Categories: GIS
Hydrology
Study Period: Jan 1, 1950 to Aug 18, 2001
Bounding Box: West longitude: -180°
North latitude:  75°
East longitude: -120°
South latitude: 50°
Datum: NAD83
Site References: Alaska -- This is the state of Alaska and adjoining provinces. Primarly used in large scale projects involving cultural regions, modeling, or GIS/Remote Sensing projects.
Data File(s): 346_ShrinkingPonds.zip
Metadata Formats:

Full Metadata (Basic HTML Format)
EML (Ecological Metadata Language - XML Format)

Public Release: Dec 10, 2008
Publications:

Riordan, B., Verbyla,D.L., and McGuire, A.D. 2006. Shrinking ponds in subarctic Alaska based on 1950-2002 remotely sensed images. Journal of Geophysical Research-Biogeosciences. 111:G04002

Verbyla, D.. 2008. The greening and browning of Alaska based on 1982-2003 satellite data. Global Ecology and Biogeography 17:547-555. DOI: 10.1111/j.1466-8238.2008.00396.x


Data Citation:

Riordan, Brian ; Verbyla, Dave L.. 2008. Pond Area Estimates: Nine Study Regions in Alaska for 3 time periods (1950s, 1978-1982, 1999-2001) using remotely sensed images, Bonanza Creek LTER - University of Alaska Fairbanks. BNZ:346, http://www.lter.uaf.edu/data_detail.cfm?datafile_pkey=346.

Data Acknowledgement:

Data are provided by the Bonanza Creek LTER, a partnership between the University of Alaska Fairbanks, and the U.S. Forest Service. Significant funding for collection of these data was provided by the National Science Foundation Long-Term Ecological Research program (NSF Grant numbers DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629) and by the USDA Forest Service, Pacific Northwest Research Station (Agreement # RJVA-PNW-01-JV-11261952-231).

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The Bonanza Creek LTER, including this website, is supported by the National Science Foundation through awards DEB-1026415, DEB-0620579, DEB-0423442, DEB-0080609, DEB-9810217, DEB-9211769, DEB-8702629 and by the USDA Forest Service, Pacific Northwest Research Station through agreement number RJVA-PNW-01-JV-11261952-231. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the supporting agencies or the program as a whole.

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