Fig 13. Call rate vs. oyster density and restoration status.

A) Oyster density at each cultch reef site (number/m²) versus average toadfish boatwhistle call rate (calls/min) from reef sites in Harris Creek Maryland. Error bars are the standard error of oyster density (x) and average call rate (y). B) Average toadfish call rate (calls/min) from each reef type in Harris Creek, MD. Control reefs (n = 3 sites) had no restoration activities whereas treatment sites (n = 5 sites) were restored in 2012 with juvenile oysters set on shell. Only call rates after 5/11/15 were used in these calculations due to rapid changes in call patterns as a result of the onset of spawning.