mangroves_area function

Calculate mangrove extent based on Global Mangrove Watch (GMW)

This function allows to efficiently calculate area of mangrove from Global Mangrove Watch - World Conservation Monitoring Centre (WCMC) for polygons. For each polygon, the area of the mangrove (in hectare) for desired year is returned. data

calc_mangroves_area()

Returns

A function that returns an indicator tibble with mangroves as variable and corresponding areas (in ha) as value.

Details

The required resources for this indicator are:

• gmw

Examples

## Not run:

library(sf)
library(mapme.biodiversity)

outdir <- file.path(tempdir(), "mapme-data")
dir.create(outdir, showWarnings = FALSE)

mapme_options(
  outdir = outdir,
  verbose = FALSE
)

aoi <- system.file("extdata", "shell_beach_protected_area_41057_B.gpkg",
  package = "mapme.biodiversity"
) %>%
  read_sf() %>%
  get_resources(get_gmw(years = c(1996, 2016))) %>%
  calc_indicators(calc_mangroves_area()) %>%
  portfolio_long()

aoi
## End(Not run)