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NPPSD Sampling Effort Maps

Geographic coverage of the North Pacific Pelagic Seabird Database (NPPSD) Distribution of samples in the North Pacific Pelagic Seabird Database (NPPSD) version 2.0
Geographic coverage of the North Pacific Pelagic Seabird Database (NPPSD) in the Version 1.0 release (Black points; see Drew and Piatt 2005 [PDF 6 MB]for details on Ver. 1.0) and new samples added in the Version 2.0 release (Red points).  Click on image for a larger view. Distribution of cumulative sampling effort in the North Pacific Pelagic Seabird Database (NPPSD) Ver. 2.0, over the time period 1973-2012. Samples were binned into 50 x 50 kilometer cells and summed over all years. Click on image for a larger view.
Sum of area sampled during 1973 Sum of area sampled during 1983-1992 Sum of area sampled during 1993-2002 Sum of area sampled during 2003-2012
Maps showing sum of area sampled during four time periods (A) 1973–1982, (B) 1983–1992, (C) 1993–2002, and (D) 2003–2012. Cells are 50 × 50 km. Click on images for a larger view.



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Page Last Modified: December 06 2016 11:22:33.