Table 1. Summary of colony and control site characteristics, including fetch, breeding pairs, area, and year of colony establishment (for colony islands).

Code	Site	Colony/Control	Average Fetch (km)	Maximum Fetch (km)	Breeding Pairs (2011)	Area (ha)	Year of colony establishment
a	Lankoslahti	Colony	0.31	0.58	1619	1.06	2002
b	Järvikari	Colony	19.23	57.68	1252	0.69	2005
d	Marjakari	Colony	22.81	64.19	1084	1.93	2003
f	Puskakarta	Colony	23.32	70.42	2342	3.64	2005
i	Urpoinen	Colony	0.81	1.66	190	4.18	2010
j	Kluppi	Colony	1.79	4.99	417	5.18	2003
l	Kalmanhohde	Colony	1.52	3.27	241	0.18	2009
o	Äggskär	Colony	1.37	2.67	2000	2.42	2003
q	Måsgrund	Colony	1.59	3.09	520	0.3	2009
c	Outoori	Control	9.91	30.81
e	Matinkari	Control	6.92	21.06
g	Kuuskajaskari	Control	5.72	16.25
h	Päiväkarit	Control	5.72	17.12
k	Korra	Control	6.71	20.75
m	Raumharju	Control	0.47	1.08
n	Mustaluoto	Control	0.68	1.23
p	Orhisaari	Control	1.65	3.74

The average and maximum fetch are given for the actual sampling point from each island. Data from the colony islands were provided by the Finnish Environment Institute, which monitors cormorant colonies.