Indicators for assessing the ecological dynamics and sustainability of southern Florida's coral reef and coastal fisheries

Jerald S Ault, S. G. Smith, J. A. Browder, W. Nuttle, E. C. Franklin, J. Luo, G. T. Dinardo, J. A. Bohnsack

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Commercial and recreational fisheries target hundreds of fish and shellfish species across the seascape of southern Florida including inshore coastal bays, the flats of barrier islands, coral reefs and offshore pelagic waters. The ecological dynamics and economic sustainability of these valuable fishery resources are key conservation concerns. This study examined two ecological indicators of fishing impacts on exploited populations: (1) the more traditional metric catch per unit of fishing effort (CPUE); and (2) the non-traditional metric average length (L̄) in the exploited life stage of a population. We show that both indicators were closely related to stock productivity via fisheries population dynamics theory, and that either indicator could be used to estimate fishing mortality rates (F). Data requirements are much less stringent for estimating F from the L̄ indicator than CPUE, making it more practical for data-poor situations common to tropical marine fisheries. Using indicator-based estimates of F̂ within a population dynamic modeling framework enabled an evaluation of fishing impacts on sustainability at both the species and community levels, an important step toward ecosystem-based fisheries assessment and management. A comparison of these approaches applied to the assessment of southern Florida coral reef fisheries suggested that fishing has fundamentally altered the ecological structure of the fish community by depleting the biomass of higher-trophic level carnivores to the extent that the stocks are unsustainable.

Original languageEnglish
Pages (from-to)164-172
Number of pages9
JournalEcological Indicators
Volume44
DOIs
StatePublished - Jan 1 2014

Fingerprint

coastal fishery
coral reefs
coral reef
fisheries
sustainability
fishery
population dynamics
fishing
fishing effort
economic sustainability
marine fisheries
sport fishing
fishery resources
shellfish
carnivores
barrier island
fishing mortality
fish
carnivore
ecosystems

Keywords

  • Average size
  • Community-level sustainability
  • Fishery exploitation
  • Length-based assessment

ASJC Scopus subject areas

  • Ecology
  • Decision Sciences(all)
  • Ecology, Evolution, Behavior and Systematics

Cite this

Indicators for assessing the ecological dynamics and sustainability of southern Florida's coral reef and coastal fisheries. / Ault, Jerald S; Smith, S. G.; Browder, J. A.; Nuttle, W.; Franklin, E. C.; Luo, J.; Dinardo, G. T.; Bohnsack, J. A.

In: Ecological Indicators, Vol. 44, 01.01.2014, p. 164-172.

Research output: Contribution to journalArticle

Ault, Jerald S ; Smith, S. G. ; Browder, J. A. ; Nuttle, W. ; Franklin, E. C. ; Luo, J. ; Dinardo, G. T. ; Bohnsack, J. A. / Indicators for assessing the ecological dynamics and sustainability of southern Florida's coral reef and coastal fisheries. In: Ecological Indicators. 2014 ; Vol. 44. pp. 164-172.
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