Calculate Reef-level Macroalgae Cover

Calculate Reef-level Macroalgae Cover (MA)

Usage

calculate_reef_ma(data_reefs_hcc, data_reefs_sc, data_reefs_sf, reefs_poly_sf)

Arguments

data_reefs_hcc

A data.frame containing reef-level hard coral cover (Value).

data_reefs_sc

A data.frame containing reef-level soft coral cover (Value).

data_reefs_sf

An sf object of the reef sample points.

reefs_poly_sf

An sf polygon object of reef boundaries.

Value

A list containing:

• data_reefs_ma – Reef-level macroalgae cover in long format with Year and Value.

• data_reefs_pts_ma_sf – Reef-level macroalgae cover as an sf object.

Details

Calculates reef-level macroalgae cover (MA) by combining reef-level hard coral (HCC) and soft coral (SC) cover. Macroalgae is assumed to occupy the remaining available space, and the function returns reef-level MA values both as a table and an sf object.

Author

Murray