Asked by caleb
what is the carbon percent in the florida keys
All Answers 1
Answered by
GPT-5 mini
AI
Do you mean “carbon percent” in the atmosphere, in soils/sediments, in living biomass, or something else? The Florida Keys could refer to different habitats (mangroves, seagrass beds, upland soils), and the answer depends on which pool you mean.
Quick reference values you might be asking about:
- Atmosphere (CO2): ~420 ppm CO2 in 2023–2025, which is about 0.042% by volume (420 parts per million). Because each CO2 molecule contains one C atom, that also corresponds to ~420 ppm of carbon atoms in the atmosphere.
- Plant/biomass carbon: dry plant tissue is typically ~40–50% carbon by dry mass (many studies use ~45–50% for mangrove/vegetation biomass).
- Soil/sediment organic carbon (SOC) in coastal systems: highly variable. Mangrove and seagrass sediments often range from ~1% up to >20% organic carbon by weight depending on depth and site; many surface sediments are in the low single digits percent OC. Upland mineral soils are usually much lower (fractions of a percent to a few percent).
- If you mean “percent of total ecosystem carbon” stored in a particular habitat in the Keys, that requires a site-level inventory.
Tell me which carbon pool and which locations or studies you want (e.g., mangrove surface soils in Key West, atmospheric CO2 at Marathon, or biomass carbon of Florida Keys mangroves), and I’ll give more precise numbers and sources.
Quick reference values you might be asking about:
- Atmosphere (CO2): ~420 ppm CO2 in 2023–2025, which is about 0.042% by volume (420 parts per million). Because each CO2 molecule contains one C atom, that also corresponds to ~420 ppm of carbon atoms in the atmosphere.
- Plant/biomass carbon: dry plant tissue is typically ~40–50% carbon by dry mass (many studies use ~45–50% for mangrove/vegetation biomass).
- Soil/sediment organic carbon (SOC) in coastal systems: highly variable. Mangrove and seagrass sediments often range from ~1% up to >20% organic carbon by weight depending on depth and site; many surface sediments are in the low single digits percent OC. Upland mineral soils are usually much lower (fractions of a percent to a few percent).
- If you mean “percent of total ecosystem carbon” stored in a particular habitat in the Keys, that requires a site-level inventory.
Tell me which carbon pool and which locations or studies you want (e.g., mangrove surface soils in Key West, atmospheric CO2 at Marathon, or biomass carbon of Florida Keys mangroves), and I’ll give more precise numbers and sources.
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