Sand supplementation favors tropical seagrass Thalassia hemprichii in eutrophic bay: implications for seagrass restoration and management

Table 6 The sediment physiochemical parameters including pH (n = 9), nitrogen (n = 9), carbon (n = 9), organic matter (n = 9), sulfur (n = 9), δ³⁴S (n = 9) and particle sizes (n = 3) in the initial stage of the three sediment types with in-situ sediment combination with different ratio of coarse beach send. 1:0, the in-situ sediment without combining with coarse beach sand was added in the tank; 1:1, the combination of half in-situ sediment and half coarse beach sand was added in the tank; 1:2, the combination of 1/3 in-situ sediment and 2/3 coarse beach sand was added in the tank

Sediment type	pH	N (%)	C (%)	Organic matter (%)	S (%)	δ³⁴S (‰)	Particle sizes
Sediment type	pH	N (%)	C (%)	Organic matter (%)	S (%)	δ³⁴S (‰)	Coarse sand (%)	Medium sand (%)	Fine sand (%)	Very fine sand (%)	Silt (%)	Clay (%)
1:0	8.83 ± 0.04^a	0.034 ± 0.005^b	0.344 ± 0.059^b	1.38 ± 0.11^a	0.017 ± 0.001^b	−0.80 ± 0.49^a	0.254	31.237	58.067	3.628	5.244	1.570
1:1	8.64 ± 0.02^b	0.025 ± 0.002^a	0.253 ± 0.029^ab	1.11 ± 0.17^b	0.013 ± 0.005^ab	1.09 ± 1.14^ab	6.274	44.017	41.076	3.842	3.369	1.422
1:2	8.92 ± 0.04^c	0.020 ± 0.003^a	0.216 ± 0.045^a	0.90 ± 0.03^b	0.009 ± 0.001^a	2.60 ± 1.19^b	11.185	44.667	35.584	4.149	3.842	0.573

The different lower case letters indicated significant differences among treatments

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