How Winter Storms Moved Lobster Traps Across Florida Keys Reef Habitat
A 2009 Florida Keys field study tracked buoyed and derelict-simulating lobster traps through winter wind events, measuring trap movement and damage to corals, sponges and other sessile fauna. This archive record summarizes the findings, later scientific use of the study and the evidence that has developed around derelict-trap impacts.
What the study did and found
Maya Ellison examined how winter winds moved lobster traps across Florida Keys reef habitats. The 2009 study tracked buoyed traps at 4, 8 and 12 m and unbuoyed traps at 4 and 8 m during 26 wind events over three winters. Sustained winds above 15 knots for more than two days caused movement. Buoyed traps traveled mean distances of 3.63 m, 3.21 m and 0.56 m at the respective depths, while unbuoyed traps moved about 0.43–0.44 m. Movement damaged corals, octocorals and sponges, reducing sessile-fauna cover from 45% to 31% at 4 m, 51% to 41% at 8 m and 41% to 35% at 12 m.
Why it is cited
Later research cites Lewis et al. (2009) as evidence that storms move lobster traps and damage benthic habitats. A 2014 Florida Keys sanctuary survey found the highest derelict-trap debris density in coral habitats and identified wind as a factor in debris redistribution. A 2016 tropical-cyclone analysis also linked trap movement to coral, sponge and seagrass damage. Florida's Fish and Wildlife Conservation Commission references the study in habitat-damage guidance. These citations support the mechanism of wind-driven trap movement rather than every ecological impact of lobster fishing.
Subsequent research supports the conclusion that lost or storm-moved traps damage sensitive benthic habitats, although it does not reproduce every measurement from 2009. The 2014 sanctuary survey identified coral habitats as accumulation areas for trap debris, consistent with wind-driven redistribution. Agency guidance also recognizes damage to corals, sponges and seagrass. However, the original movement distances, damage estimates and wind thresholds remain specific to the experimental locations, trap configurations and storm conditions.
The topic today
Florida management programs address abandoned lobster traps through retrieval and research into ghost fishing, entanglement and debris accumulation. Later modeling considers how tropical cyclones and fishing effort influence future trap losses. Gear-design studies also examine escape gaps to reduce fish bycatch, although this concerns a different environmental impact. The 2009 study remains relevant to understanding storm-driven trap movement and physical damage to coral reef habitats.