Bryan Eaton/Gloucester Daily Times
Newbury Selectman Geoff Walker, left, joins with Merrimack Valley Planning Commission’s Peter Phippen and film maker Richard Hydren, right, at a stand of phragmites on Ring’s Island in Salisbury. Hydren, of Rowley-based Staddles Production, is the producer of the phragmite documentary “Danger in the Reeds."

140128BEAphragmites