Table 1.

Temporal sediment biogeochemical parameters collected at the process sites during four cruises between 2014 and 2015 at differing points through the spring bloom: DY008 pre-spring bloom (April 2014); DY021 pre-spring bloom (March 2015); DY030 bloom (May 2015); DY034 post-spring bloom (August 2015)

Process site	Cruise	Month	Gravel (%)	Sand (%)	Silt/clay (%)	Oxygen penetration depth (cm)	Sub-surface pH minima depth (cm)	Total organic carbon (%m/m)	Nitrogen (%m/m)	Porosity
Site G	DY008	April 2014	14.26	80.94	4.79	1.4	NA	0.11	0.02	0.44
	DY021	March 2015	0.98	94.68	4.34	5.0	4.3	0.12	0.05	0.38
	DY030	May 2015	0.15	96.98	2.87	1.4	1.2	0.15	0.05	0.39
	DY034	August 2015	0.35	60.25	39.40	0.5	1.4	0.49	0.12	0.58
Site H	DY008	April 2014	0.11	79.65	20.24	1.5	NA	0.31	0.05	0.48
	DY021	March 2015	0.22	74.73	25.05	0.9	1.2	0.46	0.08	0.55
	DY030	May 2015	0.03	80.06	19.91	0.8	0.5	0.36	0.07	0.48
	DY034	August 2015	2.74	71.06	26.19	0.3	0.7	0.40	0.11	0.53
Site I	DY008	April 2014	0.02	66.05	33.93	1.5	NA	0.48	0.07	0.54
	DY021	March 2015	0.03	67.02	32.94	0.2	0.8	0.56	0.09	0.66
	DY030	May 2015	0.02	66.65	33.34	0.3	0.8	0.68	0.09	0.55
	DY034	August 2015	0.05	62.97	36.98	0.9	0.4	0.60	0.14	0.62
Site A	DY008	April 2014	0.00	35.49	64.51	1.6	NA	1.02	0.12	0.62
	DY021	March 2015	0.03	34.46	65.50	0.8	0.9	1.23	0.14	0.70
	DY030	May 2015	0.00	32.78	67.22	0.3	0.8	1.34	0.14	0.72
	DY034	August 2015	0.01	37.35	62.63	0.8	1.0	1.16	0.17	0.69