Table 4.

Subthermocline temperature (ST, °C) and depth-integrated chlorophyll-a concentration (Chl a, mg*m⁻²) values (means ± SD), recorded in areas near the main rookeries of Galapagos sea lions and Galapagos fur seals between 2014–2018.

Region/Island	2014		2015		2016		2018
	ST (°C)	Chl a (mg*m−3)	ST (°C)	Chl a (mg*m−3)	ST (°C)	Chl a (mg*m−3)	ST (°C)	Chl a (mg*m−3)
Western
Fernandina	15.88 ± 0.23	48.27 ± 16.79	18.38 ± 0.16	27.60 ± 1.26	14.87 ± 0.29	39.92 ± 15.51	17.01 ± 0.79	22.22 ± 9.26
Isabela	15.40 ± 0.28	31.41 ± 20.53	18.14 ± 0.45	14.18 ± 0.85	15.46 ± 0.29	34.17 ± 7.57	15.88 ± 0.05	25.45 ± 1.46
Northern
Pinta	15.73 ± 0.13	19.38 ± 2.45	19.19 ± 0.38	15.28 ± 0.67	20.42 ± 1.34	33.82 ± 3.17	15.71 ± 0.29	14.07 ± 0.45
Marchena	15.92 ± 0.45	–	20.91 ± 0.67	14.44 ± 0.96	14.81 ± 0.23	26.49 ± 2.87	15.61 ± 0.46	14.74 ± 0.22
Genovesa	20.23 ± 0.54	60.68 ± 18.25	20.42 ± 0.12	33.82 ± 9.52	14.53 ± 0.45	18.38 ± 5.25	17.26 ± 0.17	36.83 ± 0.38
Central
Santiago	15.34 ± 0.23	41.01 ± 3.67	17.37 ± 0.23	35.60 ± 8.24	14.64 ± 0.18	34.80 ± 11.18	15.38 ± 0.52	15.14 ± 0.18
Rábida	15.75 ± 0.54	–	19.46 ± 0.44	–	14.58 ± 0.29	–	16.01 ± 0.84	–
Seymur	15.72 ± 0.12	–	18.26 ± 0.25	–	14.87 ± 0.45	–	15.36 ± 0.45	–
Santa Cruz	15.66 ± 0.25	50.55 ± 9.33	18.42 ± 0.18	16.18 ± 0.36	14.88 ± 0.32	19.55 ± 3.51	15.31 ± 0.28	21.11 ± 0.32
Southeastern
Santa Fe	17.37 ± 0.32	–	17.37 ± 0.34	–	14.79 ± 0.56	–	15.67 ± 0.67	–
Floreana	16.03 ± 0.57	41.01 ± 1.83	18.04 ± 0.42	15.52 ± 0.21	15.19 ± 0.21	23.89 ± 1.98	16.53 ± 0.21	12.07 ± 0.13
Española	17.22 ± 0.43	17.07 ± 1.49	17.56 ± 0.23	17.92 ± 0.95	15.00 ± 0.18	25.53 ± 1.35	15.79 ± 0.34	27.67 ± 0.34
San Cristóbal	15.95 ± 0.27	19.92 ± 2.05	17.98 ± 0.13	17.64 ± 0.76	14.88 ± 0.07	18.88 ± 2.45	15.44 ± 0.05	23.81 ± 0.26

*There are no available data for 2017.