Evaluation of average length as an estimator of exploitation status for the Florida coral-reef fish community

Jerald S Ault, Steven G. Smith, James A. Bohnsack

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

Simulation and empirical analyses were conducted to evaluate the utility and robustness of average length (Lbar) of animals in the exploited population as an estimator of fishing mortality (F), and therefore as an indicator of exploitation status for Florida coral-reef fish. Simulation results showed that the Lbar estimator of fishing mortality was relatively insensitive to trends in recruitment, and demonstrated favourable properties for detecting statistical differences between sustainable and non-sustainable rates of exploitation. Rates of F estimated from fishery-dependent size composition data were comparable to F estimates from catch-and-effort time-series. Average length was also estimated from fishery-independent diver surveys for 22 species in the exploited snapper-grouper complex. A majority of snapper-grouper species are currently fished unsustainably in the Florida Keys, though overfishing appears most severe for long-lived, slow-growing fish.

Original languageEnglish
Pages (from-to)417-423
Number of pages7
JournalICES Journal of Marine Science
Volume62
Issue number3
DOIs
StatePublished - May 1 2005

Fingerprint

snapper
grouper
fishing mortality
coral reefs
coral reef
fishery
fisheries
overfishing
fish
simulation
time series analysis
time series
animal
animals
fish communities
evaluation
rate
indicator
trend

Keywords

  • Average size
  • Coral-reef fish
  • Exploitation
  • Florida Keys

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography

Cite this

Evaluation of average length as an estimator of exploitation status for the Florida coral-reef fish community. / Ault, Jerald S; Smith, Steven G.; Bohnsack, James A.

In: ICES Journal of Marine Science, Vol. 62, No. 3, 01.05.2005, p. 417-423.

Research output: Contribution to journalArticle

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