Table 1.

Descriptive statistics for eight select seascape variables for the northeast Atlantic region

							Moran’s I by distance (km)a
Layer	Abbrev	Min	Max	Mean	Standard deviation	Units	25	50	100	200	500	Data source
Mean sea surface temperature	SST	2.197	19.859	10.600	2.916	°C	0.66	0.60	0.50	0.39	0.26	NOAA
Standard deviation of sea surface temperature	sdSST	1.201	8.211	3.587	1.595	°C	0.74	0.69	0.63	0.58	0.47	NOAA
Mean thermal stress frequency	TSF	0.00	22.00	1.10	0.84	freqencyb	0.45	0.39	0.30	0.23	0.15	CoRTAD
Mean sea surface salinity	SSS	2.108	36.524	29.928	10.607	unitlessc	0.72	0.64	0.57	0.51	0.37	World Ocean Atlas 2013 v2
Mean net primary productivity	NPP	478	12,788	2,063	1697	C m−2 day−1	0.73	0.62	0.52	0.44	0.35	Ocean Productivity web
Standard deviation of net primary productivity	sdNPP	276	15,945	3,521	3,080	C m−2 day−2	0.76	0.67	0.59	0.52	0.39	Ocean Productivity web
Bathymetry	BATH	−5,029	839	−266	654	Metres	0.86	0.71	0.45	0.30	0.17	ETOPO1
Habitat exposure during Pleistocene low sea level stands	PLEIS	0.000	1.000	0.398	0.297	unitlessc	1.00	0.99	0.98	0.87	0.35	Derived from ETOPO1

^aMoran’s I is a measure of spatial autocorrelation and can range from −1 (complete negative spatial autocorrelation) to +1 (complete positive spatial autocorrelation). Values were estimated from 10,000 random points and values above 0.70 (high spatial autocorrelation) are in bold.

^bMean frequency of thermal stress anomalies ≥ 1 °C over the previous 52 weeks.

^cSSS: g/kg seawater; PLEIS: proportion.