NPPSD Sampling Effort Maps
Science Center Objects
Maps showing the sampling extent in the North Pacific Pelagic Seabird Database (NPPSD).
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All maps credit: Gary Drew, USGS. Public domain.
NPPSD Sampling Effort Maps
Maps below showing sum of area sampled during five time periods:
- (A) 1973–1982
- (B) 1983–1992
- (C) 1993–2002
- (D) 2003–2012
- (E) 2013-2019