Abstract
Ecosystem engineers change abiotic conditions, community assembly and ecosystem functioning. Consequently, their loss
may modify thresholds of ecosystem response to disturbance and undermine ecosystem stability. This study investigates
how loss of the bioturbating lugworm Arenicola marina modifies the response to macroalgal detrital enrichment of
sediment biogeochemical properties, microphytobenthos and macrofauna assemblages. A field
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