Behaviour of sea urchin Strongylocentrotus droebachiensis grazing fronts: Food-mediated aggregation and density-dependent facilitation

Agriculture & Biology

• biomass 19%
• coasts 8%
• concentrates 8%
• Echinoidea 67%
• food availability 10%
• fronds 38%
• grazing 53%
• Laminaria digitata 16%
• macroalgae 42%
• Nova Scotia 13%
• seasonal variation 9%
• Strongylocentrotus droebachiensis 100%
• Strongylocentrotus nudus 17%
• temporal variation 11%

Earth & Environmental Sciences

• biomass 10%
• coast 3%
• effect 1%
• facilitation 75%
• food 44%
• food availability 6%
• grazing 56%
• rate 1%
• removal 12%
• sea 34%
• seasonal variation 4%
• temporal variation 4%
• wave height 6%