Table S4: Mean (+/-SE) cover or biomass of wrack at intertidal elevations (low, mid, high) of armoured shorelines, natural (unarmoured) shorelines (sandy beaches, rockpools and rocky shores), eco-engineered shorelines (man-made rock pools and planted saltmarshes). See Tables S1-3 for further detail. Low Seawalls: Seawalls: Natural (%) intertidal 0.63% 0.63% rockpools: (0.17) (0.17) 2.06% Sandy (0.99) beaches: 3.75% rockpool: (1.14) 12.97% rockpool: Rocky (2.36) 12.97% shores: (2.36) 0.36% (0.07) Rockpools: 2.06% (0.99) Mid Natural intertidal beaches: rockpools: 1.10% rockpool: 1.65% (0.23) 1.00% (0.27) Rocky (0.27) shores: Saltmarsh: 0.61% 13.90% rockpool: (0.10) (2.25) 1.00% Rockpools: (0.37) 1.65% (0.27) High Sandy intertidal beaches: 18.58% (2.41) Rocky shores: 1.42% (0.18) Rockpools: 3.11% (0.68) Marine Low Seawalls: Natural biomass intertidal 0.01g rockpools: (g) (0.01) 0.02 g (0.01) rockpool: 0.93 g rockpool: (0.18) 0.93 g (0.18)
Table S4: Mean (+/-SE) cover or biomass of wrack at intertidal elevations (low, mid, high) of armoured shorelines, natural (unarmoured) shorelines (sandy beaches, rockpools and rocky shores), eco-engineered shorelines (man-made rock pools and planted saltmarshes). See Tables S1-3 for further detail. (%) Low intertidal Seawalls: 0.63% (0.17) Sandy beaches: 3.75% (1.14) Rocky shores: 0.36% (0.07) Rockpools: 2.06% (0.99) Seawalls: 0.63% (0.17) rockpool: 12.97% (2.36) Natural rockpools: 2.06% (0.99) rockpool: 12.97% (2.36) Mid intertidal beaches: 1.10% (0.23) Rocky shores: 0.61% (0.10) Rockpools: 1.65% (0.27) rockpool: 1.00% (0.27) Saltmarsh: 13.90% (2.25) Natural rockpools: 1.65% (0.27) rockpool: 1.00% (0.37) High intertidal Sandy beaches: 18.58% (2.41) Rocky shores: 1.42% (0.18) Rockpools: 3.11% (0.68) Marine biomass (g) Low intertidal Seawalls: 0.01g (0.01) rockpool: 0.93 g (0.18) Natural rockpools: 0.02 g (0.01) rockpool: 0.93 g (0.18)
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