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An obvious algal bloom on the mudflats points to pollution flowing down from the adjacent dairy farm.
Home Bay, Drakes Estero, Point Reyes NS, CA (1989).
Dairy farms have been a part of the landsape on the Point Reyes Peninsula since the mid 19th century.
Home Ranch, Point Reyes NS, CA (1989).
Some dairy farms at Point Reyes were closed down when the area became a national seashore, to free up habitat for the original wildlife, such as elk.
Pierce Ranch, Point Reyes NS, CA (1982).