Table 1 Reported CH4 flux data for seagrass systems.
From: The greenhouse gas offset potential from seagrass restoration
Location | Seagrass | Method | CH4 Flux (µmol m−2 hr−1) | Notes | Reference |
|---|---|---|---|---|---|
Florida Keys, FL, USA | Thalassia testudinum | Benthic chambers and incubations | 1.81–1.86 | ||
Bimini, Bahama Island | Syringodium sp. | Benthic chambers and incubations | 0.14–0.47 | ||
Moreton Bay, Australia | Zostera capricorni | In vitro incubations | 14.5 | Est. for top 20 cm of bed | |
Red Sea | Multispecies: Thalassodendron ciliatum, Cymodocea serrulata, Halodule uninervis, etc. | Core incubations | 0.004–23.6 | Salinity range = 37.98–42.29 | |
Ria Formosa Lagoon, Portugal | Zostera noltii | Benthic chambers | 4.4 | Aerial exposure at night | |
Ria Formosa Lagoon, Portugal | Zostera noltii | Benthic chambers | 6.9 | Aerial exposure during day | |
Ria Formosa Lagoon, Portugal | Zostera noltii | Benthic chambers | 9.0–30 | During tidal flooding | |
Ria Formosa Lagoon, Portugal | Zostera noltii | Benthic chambers | 4.4–71(mean = 12.8) | ||
Florida Bay, FL, USA | Thalassia testudinum | Benthic chambers and porewater samples | 0.567 | Dead seagrass areas in winter | |
Florida Bay, FL, USA | Thalassia testudinum | Benthic chambers and porewater samples | 14.21 | Live seagrass areas in fall | |
Cape Lookout Bight, NC, USA | Zostera marina and Halodule sp. | Core extraction, centrifuging, porewater sampling | 20–2000 | Seagrass not specifically studied but occurs in the general study area | |
Arcachon Bay, France | Zostera noltii | Benthic chambers | 1.6–32.7 | Sed-water flux with seasonal variation | |
Chilika Lagoon, India | Multispecies: Halodule spp., Halophila spp. | Open water and sediment samples | 4.17, 5.6 | Wet and dry season averages | |
Tomales Bay, CA, USA | (Zostera marina) | Benthic chambers | 2.08 | Summer eelgrass bed | |
Tomales Bay, CA, USA | (Zostera marina) | Benthic chambers | 0.896 | Winter eelgrass bed | |
South Bay, VA, USA | Zostera marina | Benthic chambers | 13.110 ± 4.570 | Seagrass spring average | This study |
South Bay, VA, USA | Zostera marina | Benthic chambers | 3.136 ± 1.307 | Seagrass summer average | This study |
South Bay, VA, USA | Zostera marina | Benthic chambers | 0.845 ± 0.255 | Seagrass fall average | This study |
South Bay, VA, USA | Zostera marina | Benthic chambers | 5.697 | Seagrass 9-month average | This study |
South Bay, VA, USA | Zostera marina | Benthic chambers | 1.778 ± 0.930 | Bare spring average | This study |
South Bay, VA, USA | Zostera marina | Benthic chambers | 0.050 ± 0.021 | Bare summer average | This study |
South Bay, VA, USA | Zostera marina | Benthic chambers | 0.387 ± 0.104 | Bare fall average | This study |
South Bay, VA, USA | Zostera marina | Benthic chambers | 0.739 | Bare 9-month average | This study |
