TABLE 1.

Coordinates and number of sampled pools for each island included in this study

		No. of pools
Island	Coordinates	D. longispina	D. magna
Fyrholmen (F)	57.861/35.466	5	1
Prackan (FO)	58.121/35.432	4	1
Nameless skerry (FS)	58.041/35.366	5	8
Granbusken (G)	57.849/33.861	14	21
Flatgrund (K)	58.245/34.856	0	1
Lasarettet (LA)	57.943/35.198	1	7
Nameless skerry (LN)	58.140/34.420	0	1
Mellanskär (M)	57.992/34.497	4	3
Storgrundet (N)	58.699/34.636	14	24
Skallotholmen (SK)	58.510/35.739	4	6
Nameless skerry (SKN)	58.606/35.857	0	1
Nameless skerry (SKO)	58.595/35.837	0	1
Nameless skerry (SKW)	58.468/35.834	0	2

Abbreviations of names correspond to labels in Figure 1. Coordinates are in kilometers, according to the Finnish coordinate system.