Table 5.

Mean GHG flux reported from different intertidal habitats including results from this study and the corresponding experiment during tidal submergence⁴², and other global studies.

Intertidal Habitat	Mean Reported Flux (µmolm-2h-1)			Flux measurement period	Reference
	CO2*	CH4	N2O
Intertidal unvegetated flat (during emergence)	−172 ± 76	0.05 ± 0.14	0.006 ± 0.015	~2–3 hour	This study
	−1967 ± 1656			20–35 minute	55
	−2267 ± 1070			5 minute	11
			−0.29 ± 1.2	sediment core	4
			−0.25 ± 0.7	1.5 hour benthic	10
		5.3 ± 42		2 hour	39
Intertidal unvegetated flat (during submergence)			1.5 ± 3.7	1.5 hour	10
		0.14 ± 0.06	0.29 ± 0.19	5 hour	2
			0.36 ± 1.13	Meta analysis of 10 studies	3
	−974 ± 870			4 hour	11
	−1110 ± 636			6 hour	9
	110 ± 2386				42
Seagrass		48 ± 142		24 hour sediment cores	59
		11 ± 6		6 hour	60
	−5419 ± 3785			4 hour	11
			0.705 ± 1.12	Meta-analysis of 17 studies	3
Mangroves	206 ± 146			4 hour	61
	−1258 ± 3620	74 ± 705	2.4 ± 3.0	Meta-analysis of 18 studies	62
			0.44 ± 2.5	Meta-analysis of 17 studies	3
Saltmarsh		3.5 ± 4.1		Meta-analysis	63
	3122 ± 4302	2		Meta-analysis	64
			4.15 ± 7.65	1.5 hour	10
			2.8 ± 6.3	3 hour	65

^*Average CO₂ fluxes reported from measurements under light conditions.