Classification of individual duck telemetry locations as wet habitat or dry non-habitat in the Central Valley and Suisun Marsh in California during October-March of 2014-15 through 2017-18 using three maps derived from open-water data from Point Blue Conservation Science
Dates
Publication Date
2021-02-16
Start Date
2014-09-26
End Date
2018-03-30
Citation
Matchett, E.L., Overton, C.T., and Casazza, M.L., 2021, Classification of waterfowl habitat, and quantification of interannual space use and movement distance from primary roosts to night feeding locations by waterfowl in California for October - March of 2015 through 2018: U.S. Geological Survey data release, https://doi.org/10.5066/P922KDU6.
Summary
We used Point Blue Conservation Science's dynamic open-water dataset of water distribution and our telemetry data for duck locations to develop frequently updated habitat maps for the Central Valley and Suisun Marsh in California during October-March of 2014-15 through 2017-18. Telemetry data additionally was used to compare performance of each of three series of habitat maps produced. To create this tabular dataset, we intersected telemetry locations for ducks (vector point data) with habitat maps (raster mosaics) in a Geographic Information System (GIS) and attributed duck locations with map pixel values representing habitat, non-habitat, or unclassified (if data were missing). To develop maps of waterfowl habitat, we used open water [...]
Summary
We used Point Blue Conservation Science's dynamic open-water dataset of water distribution and our telemetry data for duck locations to develop frequently updated habitat maps for the Central Valley and Suisun Marsh in California during October-March of 2014-15 through 2017-18. Telemetry data additionally was used to compare performance of each of three series of habitat maps produced. To create this tabular dataset, we intersected telemetry locations for ducks (vector point data) with habitat maps (raster mosaics) in a Geographic Information System (GIS) and attributed duck locations with map pixel values representing habitat, non-habitat, or unclassified (if data were missing). To develop maps of waterfowl habitat, we used open water data (version without cloud-filling) publicly available on Point Blue Conservation's California Water Tracker web site and which Point Blue Conservation Science derived at 16-18 day intervals from mosaics of Landsat 8 imagery for the region including the Central Valley and Suisun Marsh. Each record in the data set represents a duck location by species (column 1) bound to the spatial extent of the Central Valley and Suisun Marsh for October-March of 2014-15 through 2017-18. Columns 2 - 4 represent attributes assigned to duck locations by each of the three maps that were developed and assessed for accuracy. We used the data set to summarize and compare the proportion of duck locations in habitat for the three maps. We further summarized proportions in habitat by duck species (Mallard versus Northern Pintail) and biological activity (for example, feeding and roosting versus molting).
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Telem habitat table metadata,Waterfowl drought impact OFR.xml Original FGDC Metadata
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40.41 KB
application/fgdc+xml
telemetry_3maps_intersection.csv
3.05 MB
text/csv
Purpose
We leveraged a subset of telemetry data (years 2015-18) that was collected as part of a longer-term research project to develop three series of waterfowl habitat maps using Point Blue's open-water raster mosaics and then evaluate each series' performance for accurately characterizing habitat. The resulting data set from the intersection of the telemetry data and the open-water data allowed us to evaluate the relative performance of the waterfowl habitat maps and the extent of over- or under-classifying waterfowl habitat. Anticipated use of this data set is limited to assessment of the three series of maps based on our methods.
Rights
The authors of these data require that data users contact them regarding intended use and to assist with understanding limitations and interpretation. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
