BUILDING SUSTAINABLE FISHERIES IN FLORIDA'S CORAL REEF ECOSYSTEM: POSITIVE SIGNS IN THE DRY TORTUGAS

In a series of synoptic research cruises including 4000 research dives, we surveyed reef-fish populations and habitats before and 3 yrs after 2001 implementation of notake marine reserves covering approximately 566 km 2 in the Dry Tortugas, Florida. Species richness and composition of 267 fishes remained stable between 1999–2000 and 2004 within the overall survey domain. Reef-fish biodiversity was highest in the more rugose habitats. Domain-wide abundances of several exploited and nonex ploited species increased; no declines were detected. In the Tortugas Bank reserve, we found significantly greater abundances and shifts in length composition toward a higher proportion of exploited-phase animals in 2004 than in 1999–2000 for some species. Consistent with marine reserve theory, we detected no declines in exploited species in the reserve, whereas we detected both increases and declines in nontarget species, but the increases in exploited populations may also have been influenced by factors other than protected status. Although the recovery process is still in an early stage, our results after 3 yrs are encouraging and suggest that no-take marine reserves, in conjunction with traditional management, can help build sustainable fisheries while protecting the Florida Keys coral-reef ecosystem.

[1]  Steven L. Miller,et al.  Baseline multispecies coral reef fish stock assessment for the Dry Tortugas , 2002 .

[2]  Gunnar Stefansson,et al.  Combining control measures for more effective management of fisheries under uncertainty: quotas, effort limitation and protected areas , 2005, Philosophical Transactions of the Royal Society B: Biological Sciences.

[3]  Garry R. Russ,et al.  Marine reserve benefits local fisheries , 2004 .

[4]  S. Hooker,et al.  Marine Reserves as a Tool for Ecosystem-Based Management: The Potential Importance of Megafauna , 2004 .

[5]  C. Roberts,et al.  Benefits beyond boundaries: the fishery effects of marine reserves , 2003 .

[6]  M. Domeier.  A potential larval recruitment pathway originating from a Florida marine protected area , 2004 .

[7]  C. Roberts.  Ecological advice for the global fisher crisis. , 1997, Trends in ecology & evolution.

[8]  Averill M. Law,et al.  Simulation Modeling and Analysis , 1982 .

[9]  A. J. Underwood,et al.  Experiments in ecology and management: Their logics, functions and interpretations , 1990 .

[10]  Colin Clark,et al.  Marine Reserves: from Beverton and Holt to the Present , 1998, Reviews in Fish Biology and Fisheries.

[11]  J. Ault,et al.  A retrospective (1979-1996) multispecies assessment of coral reef fish stocks in the Florida keys , 1998 .

[12]  A. Agresti.  An introduction to categorical data analysis , 1997 .

[13]  Allan Stewart-Oaten,et al.  ENVIRONMENTAL IMPACT ASSESSMENT: "PSEUDOREPLICATION" IN TIME?' , 1986 .

[14]  Will F. Figueira,et al.  The Impact of United States Recreational Fisheries on Marine Fish Populations , 2004, Science.

[15]  Russell B. Millar,et al.  Burdens of evidence and the benefits of marine reserves: putting Descartes before des horse? , 2003, Environmental Conservation.

[16]  Thomas N. Lee,et al.  Larval transport and retention of the spiny lobster, Panulirus argus, in the coastal zone of the Florida Keys, USA , 2002 .

[17]  C. Dahlgren,et al.  Designing a Dry Tortugas Ecological Reserve: how big is big enough? …To do what? , 2000 .

[18]  Stanley Lemeshow,et al.  Sampling of Populations: Methods and Applications , 1991 .

[19]  N. Polunin.  Marine protected areas, fish and fisheries , 2008 .

[20]  J. Ault,et al.  An Efficient Sampling Survey Design to Estimate Pink Shrimp Population Abundance in Biscayne Bay, Florida , 1999 .

[21]  R. Steneck,et al.  Critical science gaps impede use of no-take fishery reserves. , 2005, Trends in ecology & evolution.

[22]  J. Hunt,et al.  Change in size and abundance of Caribbean spiny lobsters Panulirus argus in a marine reserve in the Florida Keys National Marine Sanctuary, USA , 2005 .

[23]  G. Russ,et al.  Are fisheries ‘sustainable’? A counterpoint to Steele and Hoagland , 2004 .

[24]  G. Davis,et al.  Marine parks and sanctuaries for spiny lobster fisheries management , 1980 .

[25]  J. Ault,et al.  Developmental patterns within a multispecies reef fishery : Management applications for essential fish habitats and protected areas , 2000 .

[26]  C. Roberts,et al.  Effects of marine reserves on adjacent fisheries. , 2001, Science.

[27]  J. Steele,et al.  Are fisheries “sustainable”? , 2003 .

[28]  J. Ault,et al.  Evaluation of average length as an estimator of exploitation status for the Florida coral-reef fish community , 2005 .

[29]  J. Bohnsack.  Application of marine reserves to reef fisheries management , 1998 .

[30]  J. Bohnsack,et al.  A stationary visual census technique for quantitatively assessing community structure of coral reef fishes , 1986 .

[31]  J. Castilla,et al.  The management of fisheries and marine ecosystems , 1997 .

[32]  J. Ault,et al.  Management Strategies to Conserve Marine Biodiversity , 1996 .

[33]  Jerald S. Ault,et al.  Towards sustainable multispecies fisheries in the Florida, USA, coral reef ecosystem , 2005 .

[34]  Steven G. Smith,et al.  An integrated simulation modeling and operations research approach to spatial management decision making , 2001 .

[35]  Serge M. Garcia,et al.  When can marine reserves improve fisheries management , 2004 .

[36]  Marc Mangel,et al.  Regime, phase and paradigm shifts: making community ecology the basic science for fisheries , 2005, Philosophical Transactions of the Royal Society B: Biological Sciences.

[37]  Alan Hastings,et al.  COMPARING DESIGNS OF MARINE RESERVES FOR FISHERIES AND FOR BIODIVERSITY , 2003 .

[38]  E. Williams,et al.  Mean distribution and seasonal variability of coastal currents and temperature in the Florida keys with implications for larval recruitment , 1999 .

[39]  N. Polunin,et al.  Are marine reserves effective in management of reef fisheries? , 1991, Reviews in Fish Biology and Fisheries.

[40]  G. Russ,et al.  A long-term, spatially replicated experimental test of the effect of marine reserves on local fish yields , 2005 .

[41]  R. Muñoz,et al.  Preliminary evidence of increased spawning aggregations of mutton snapper (Lutjanus analis) at Riley's Hump two years after establishment of the Tortugas South Ecological Reserve , 2005 .

[42]  E. DeMartini.  Modeling the potential of fishery reserves for managing Pacific coral reef fishes , 2004 .

[43]  Richard A. Johnson,et al.  Applied Multivariate Statistical Analysis , 1983 .

[44]  Benjamin S. Halpern,et al.  Marine reserves have rapid and lasting effects , 2002 .

[45]  Jerald S. Ault,et al.  Designing Marine Reserves for Fishery Management , 2004, Manag. Sci..

[46]  Paul J. B. Hart,et al.  Handbook of fish biology and fisheries , 2002 .

[47]  E. K. Pikitch,et al.  Ecosystem-Based Fishery Management , 2004, Science.

[48]  T. Pitcher,et al.  Towards sustainability in world fisheries , 2002, Nature.

[49]  S. Hurlbert.  Pseudoreplication and the Design of Ecological Field Experiments , 1984 .