Table 2.

Matrix for combining introduction and exposure/establishment (adapted from [38]).

		Introduction
		Negligible	Extremely low	Very low	Low	Moderate	High
Exposure & establishment	Negligible	N	N	N	N	N	N
	Extremely low	N	EL	EL	EL	EL	EL
	Very low	N	EL	VL	VL	VL	VL
	Low	N	EL	VL	L	L	L
	Moderate	N	EL	VL	L	M	M
	High	N	EL	VL	L	M	H