Macroalgae and phytoplankton as indicators of ... - Naturstyrelsen

gram. Data were collected according to new common guidelines (Krause-
Jensen et al. 2001), where divers visually recorded the percent cover of individual
erect algal species and of the total erect macroalgal community
(excluding the crust-forming algae). Algal cover was estimated in percent
of the hard substratum within 3 sub-areas of 25 m 2 at specific depth
in each 2-m depth interval along the depth gradients/sites.
Data sets where the summed cover of algal species constituted