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Walking transect path

Dates

Publication Date
Start Date
2012-01-27
End Date
2013-03-15

Citation

Lafferty, K.D., Stewart, T.E., and Hechinger, R.F., 2017, Bird distribution surveys at Carpinteria Salt Marsh, California USA, January 2012 to March 2013: U.S. Geological Survey data release, https://doi.org/10.5066/F7F47M95.

Summary

We designed a 12.2 km walking transect so that an observer would pass within 50m of all habitat in the estuary and also minimize fording large channels. This transect was drawn using the path tool in Google Earth on a satellite image of the survey area. The path was printed on top of paper maps and used by observers as a map in the field. Most often, the entire transect was walked by two observers, one starting in the far West, the other in the middle of the estuary. Observers were permitted to deviate from the map to get clear views of certain features like incised channels or to identify a particular bird. The transect spacing worked for most birds, but was too sparse to accurately count Belding’s Savannah Sparrows. In general, the [...]

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Shapefile: Walking transect path.zip
Walking transect path.CPG 5 Bytes
Walking transect path.dbf 414 Bytes
Walking transect path.prj 425 Bytes
Walking transect path.sbn 132 Bytes
Walking transect path.sbx 116 Bytes
Walking transect path.shp 3 KB
Walking transect path.shx 108 Bytes
Walking transect path_FGDC.xml
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10.46 KB

Purpose

These data were collected as part of a broader effort to understand food webs in California Estuaries, with particular reference to trematode life cycles. They have also been used to understand bird habitat use and community composition and to predict the effects of sea level rise on bird distributions.

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.

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  • USGS Western Ecological Research Center

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