Table 1 Extension, production and losses of vegetated coastal ecosystems.
Ecosystem | Global extension (km2) | Local net primary production (g C m−2 yr−1) | Global net primary production (Pg C yr−1) | Global loss rate (% yr−1) | Percentage of area lost since the Second World War |
|---|---|---|---|---|---|
Salt marshes | 22,000–400,0005 200,00098 | 110028 | 0.02–0.44 | 1–261 | – |
Mangroves | 137,760–152,3615 152,308100 | 100028 | 0.14–0.15 | 1–361 0.7–1.7100 | 30–5010,99 >25100 |
Seagrasses | 177,000–600,0005 | 81728 | 0.14–0.49 | 0.98 | 308 |
Macroalgae | 3,400,000101 | 750101 | 2.55 | – | – |
Superscript numbers indicate the reference sources of data. For some parameters and habitats more than one estimate (or range of estimates) is available. | |||||
