Table 1. Site location and characteristics.

Site	Ref.	Site name	Location	Monitoring period	GPS location
1	YER	Yering	Yarra River upstream	Jan–Mar 2015	-37.691698; 145.317018
2	WAR	Warrandyte	Yarra River upstream	Jan–Mar 2015	-37.736517; 145.222720
3	DFS	Dights Falls	Yarra River upstream	Dec 2014 –Mar 2015	-37.796988; 145.001416
				2–5 Mar 2015#	-37.796878; 145.000175
4	MOR	Morell Bridge	Yarra River estuary	Dec 2014 –Mar 2015	-37.827752; 144.983937
5	ELW	Elwood Beach	Port Phillip Bay	Dec 2014 –Mar 2015	-37.889094; 144.983612
6	FRA	Frankston Beach	Port Phillip Bay	Dec 2014 –Mar 2015	-38.142595; 145.118282
7	RYE	Rye Beach	Port Phillip Bay	Dec 2014 –Mar 2015	-38.370196; 144.831464

^# Because of construction work at Dights Falls, three samples were taken at a slightly different location between 2 and 5 March.