Temporal genetic structure in a poecilogonous polychaete: the interplay of developmental mode and environmental stochasticity

Table 1 Sampling information

Sea	Population	Code	Years sampled (number of genotyped individuals)	Salinity (psu)	Worm density	Observed developmental modes*
Baltic Sea (st)	Ängsö	FIA	2008(53); 2009(52); 2010(42)	6-8	Low	B
Baltic Sea (st)	Fårö	FIF	2008(45); 2009(40); 2010(39)	6-8	Low	-
	Vellerup	DKV	2008(43); 2009(47); 2010(43)	20-21	Low to medium	I, P, B
	Rörvig	DKR	2009(42); 2010(40)	20-22	Medium	I, B, P
	Herslev	DKH	2008(24); 2010(42)	14	Low	I, B
Wadden Sea (it)	Netherlands	NET	2009(48); 2010(46); 2011(42)	28	High to very high	P, I, B
North Sea (it)	Drum sands	UK	2009(28); 2010(49)	28	High	P

Pygospio elegans sampling locations (st = sub-tidal, it = intertidal), population codes, and years sampled, with number of individuals genotyped per sample in parentheses. Salinity measured at each location, qualitative estimates of worm density and observed larval developmental modes are noted, with the most common developmental mode listed first.
*Observed larval developmental modes: B = benthic, I = intermediate, P = planktonic.

ISSN: 2730-7182