IMPLICATIONS FOR MANAGEMENT The results of this study contradict much of the conventional wisdom about the importance of ocean warming, disease, <strong>and</strong> hurricanes on coral reefs <strong>and</strong> emphasize the critical importance of historical perspective for coral reef management <strong>and</strong> conservation. The threats of climate change <strong>and</strong> ocean acidification loom ominously for the future, but overfishing <strong>and</strong> the resulting increase in macroalgae have been the major drivers of the catastrophic decline of <strong>Caribbean</strong> reefs up until today. What this means is that smart decisions <strong>and</strong> actions on a local basis can make an enormous difference for the wellbeing of corals reefs <strong>and</strong> the people <strong>and</strong> enterprises that depend upon them. Thus, three major recommendations emerge from this report: 1. Ban all trap fishing, spearfishing <strong>and</strong> any other fishing of parrotfish in coral reefs <strong>and</strong> adjacent environments <strong>and</strong> provide dignified alternative livelihoods for the fishers affected. 2. Simplify <strong>and</strong> st<strong>and</strong>ardize monitoring of <strong>Caribbean</strong> reefs <strong>and</strong> make the results available on an annual basis to facilitate adaptive management. A very small number of key variables would suffice including: percent cover of corals <strong>and</strong> macroalgae, biomass of large parrotfish <strong>and</strong> abundance of Diadema , coral recruitment measured as the density of small colonies < 40 mm, incidence of coral disease, <strong>and</strong> water transparency measured by a secchi disk. 3. Foster communication <strong>and</strong> exchange of information so that local managers can benefit from the experiences of others elsewhere. STATUS AND TRENDS OF CARIBBEAN CORAL REEFS: 1969-2012 17
PART I: OVERVIEW AND SYNTHESIS FOR THE WIDER CARIBBEAN REGION Jeremy BC Jackson, Mary K Donovan, Katie L Cramer, Vivian Lam, Rolf PM Bak, Iliana Chollett, Sean R Connolly, Jorge Cortés, Phil Dustan, Mark C Eakin, Alan M Friedl<strong>and</strong>er, Terry Hughes, Benjamin J Greenstein, Scott F Heron, Jeff Miller, Peter Mumby, John M P<strong>and</strong>olfi, Caroline S Rogers, Robert Steneck, Ernesto Weil, Pedro M Alcolado, Jahson B Alemu I, William S Alevizon, Jesús Ernesto Arias-González, Andrea Atkinson, David L Ballantine, Carolina Bastidas, Claude Bouchon, Yol<strong>and</strong>e Bouchon-Navaro, Steve Box, Angelique Brathwaite, John F Bruno, Chris Caldow, Robert C Carpenter, Bernadette H Charpentier, Mark Chiappone, Rodolfo Claro, Aldo Cróquer, Adolphe O Debrot, Peter Edmunds, Douglas Fenner, Ana Fonseca, Marcia C Ford, Kirah Forman, Graham E Forrester, Joaquín R Garza-Pérez, Peter MH Gayle, Gabriel D Grimsditch, Hector M Guzmán, Alastair R Harborne, Marah J Hardt, Mark Hixon, Joshua Idjadi, Walter Jaap, Christopher FG Jeffrey, Ayana Elizabeth Johnson, Eric Jordán-Dahlgren, Karen Koltes, Judith C Lang, Yossi Loya, Isaias Majil, Carrie Manfrino, Jean-Philippe Maréchal, Croy MR McCoy, Melanie D McField, Steven Miller, Thaddeus Murdoch, Ivan Nagelkerken, Richard Nemeth, Maggy M Nugues, Hazel A Oxenford, Gustavo Paredes, Joanna M Pitt, Nicholas VC Polunin, Pedro Portillo, Héctor Bonilla Reyes, Rosa E Rodríguez-Martínez, Alberto Rodriguez-Ramirez, Benjamin I Ruttenberg, Rob Ruzicka, Stuart S<strong>and</strong>in, Myra J Shulman, Struan R Smith, Tyler B Smith, Brigitte Sommer, Chris Stallings, Rubén E Torres, John W Tunnell, Jr., Mark JA Vermeij, Ivor D Williams, Jon D Witman <strong>Caribbean</strong> coral reef ecosystems are severely degraded due to human overfishing, pollution, climate change, <strong>and</strong> the synergies among them. <strong>Coral</strong> cover has declined by more than 80% since the 1970s (Fig. 1), virtually all the large fishes, sharks, <strong>and</strong> turtles are gone (Fig. 2), <strong>and</strong> the threats of global climate change loom increasingly ominously for the future (Fig. 3)(Hughes 1994; Jackson 1997; Aronson <strong>and</strong> Precht 2001; Jackson 2001; Gardner et al. 2003; P<strong>and</strong>olfi et al. 2003; McClenachan 2008; Eakin et al. 2010). The severity of the situation has raised serious questions about the future of <strong>Caribbean</strong> reefs <strong>and</strong> indeed reefs worldwide (Knowlton 2001; Hughes et al. 2003, 2010; Bellwood et al. 2004, P<strong>and</strong>olfi et al. 2005; Hoegh-Guldberg et al. 2007; Hughes et al. 2010). Nevertheless, there are reasons for hope based upon the remarkable abundance <strong>and</strong> resilience of corals at some remote Pacific isl<strong>and</strong> reefs that are protected from local impacts of overfishing <strong>and</strong> pollution (Friedl<strong>and</strong>er <strong>and</strong> DeMartini 2002; Knowlton <strong>and</strong> Jackson 2008; S<strong>and</strong>in et al. 2008; P<strong>and</strong>olfi et al. 2011; Gilmour et al. 2013). Despite increased warming <strong>and</strong> coral bleaching throughout the Pacific, these reefs have recovered from past episodes of bleaching <strong>and</strong> still support extraordinarily abundant <strong>and</strong> resilient populations of fishes <strong>and</strong> corals. There are also reports of considerable variability in the condition of <strong>Caribbean</strong> reefs (Kramer 2003, Newman et al. 2006, Schutte et al. 2010) that is obscured by plotting a single line for reef condition over time, regardless of location, reef type, depth, environmental conditions, <strong>and</strong> human impact as in Fig. 1 (Gardner et al. 2003). For example, live coral cover is less than the reported <strong>Caribbean</strong> average of 10% in the 18 STATUS AND TRENDS OF CARIBBEAN CORAL REEFS: 1969-2012
- Page 1 and 2: Status and Trends of Caribbean Cora
- Page 3 and 4: Dedication: This book is dedicated
- Page 5 and 6: Phase shifts ......................
- Page 7 and 8: Introduction This is the 9th status
- Page 9 and 10: Acknowledgments, Co-sponsors, and S
- Page 11 and 12: EXECUTIVE SUMMARY Jeremy Jackson
- Page 13 and 14: STRATEGY AND SCOPE OF THE PRESENT R
- Page 15 and 16: The greatest overall changes in cor
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- Page 25 and 26: Table 2. List of coral reef locatio
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- Page 33 and 34: mean of 14.3 % (+2.0, -1.8). This l
- Page 35 and 36: Changes in coral cover were similar
- Page 37 and 38: FIGURE 13. Large-scale shifts from
- Page 39 and 40: TABLE 5. Changes in coral and macro
- Page 41 and 42: The disparate reef histories in Fig
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- Page 45 and 46: Decline of Diadema antillarum Diade
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- Page 49 and 50: Caribbean, where the mass mortality
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- Page 53 and 54: or avoidance behavior by larvae and
- Page 55 and 56: of disease and coral death. These a
- Page 57 and 58: contrast, reefs on the Belize Centr
- Page 59 and 60: TABLE 9. Average secchi disk depths
- Page 61 and 62: Label Country Location DHW 1998 DHW
- Page 63 and 64: 2010 are surprisingly flat (Fig. 33
- Page 65 and 66: Pacific lionfish Pterois volitans t
- Page 67 and 68: Bruno et al. 2009). However, our re
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is, for example, for degree heating
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1. Ban all trap fishing, spearfishi
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Chollett I, Mumby PJ, Müller-Karge
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CH, Steneck RS, Tegner MJ, Warner R
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Rasher DB, Stout EP, Engel S, Kuban
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Appendices Appendix I Field Field O
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80 STATUS AND TRENDS OF CARIBBEAN C
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82 STATUS AND TRENDS OF CARIBBEAN C
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84 STATUS AND TRENDS OF CARIBBEAN C
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86 STATUS AND TRENDS OF CARIBBEAN C
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88 STATUS AND TRENDS OF CARIBBEAN C
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90 STATUS AND TRENDS OF CARIBBEAN C
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92 STATUS AND TRENDS OF CARIBBEAN C
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94 STATUS AND TRENDS OF CARIBBEAN C
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96 STATUS AND TRENDS OF CARIBBEAN C
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98 STATUS AND TRENDS OF CARIBBEAN C
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Location Reference Data Contributor
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Location Reference Data Contributor
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Location Reference Data Contributor
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Davis GE (1982) A century of natura
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Roos PJ (1964) The distribution of
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Steneck RS (1994) Is herbivore loss
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PART II: REPORTS FOR INDIVIDUAL COU
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COUNTRIES, STATES, AND TERRITORIES
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Map Code Contributor Time Period Ye
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7 Nagelkerkan, Bimini 2006 1 X Ivan
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Cheung WWL, Sadovy de Mitcheson Y (
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BARBADOS Coauthors: Caroline Bissad
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2003-present: Sporadic outbreaks of
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BELIZE Coauthors: Nadia Bood, John
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Fig. 4.3 Average percent cover of m
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24 Dustan P, King A, Treml E, Allin
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Fig. 5.2 Average percent cover of l
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Fricke H, Meischner D (1985) Depth
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Map Code Contributor Location Time
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10 Kramer PA, Bischof B.G. (2003) A
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Fig. 7.2 Average percent cover of l
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CAYMAN ISLANDS Coauthors: Timothy A
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Fig. 8.3 Diadema density and biomas
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COLOMBIA Coauthors: Alan Friedlande
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1980s-1990: Macrolagal and coral di
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Published Data Sources 1 Coral A, C
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Map Code Contributor Location Time
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CUBA Coauthors: Pedro M. Alcolado,
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2005: Hurricane Dennis (Category 4)
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CURAÇAO Coauthors: Rolf Bak, Dolfi
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Fig. 12.3 Average density of Diadem
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18 Bruckner AW, Bruckner RJ (2003)
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Fig. 14.2 Average percent cover of
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Geraldes FX, Vega M, Ramírez H, Ro
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General Literature Borger JL, Stein
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Map Code Contributor Location Time
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Timeline 1878: Black water event ki
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25 Forcucci D (1994) Population den
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Fig. 16.2 Average percent cover of
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Published Data Sources 1 Bright TJ,
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Map Code Contributor Location Time
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Chevaillier P (1990) Méthodes d’
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Map Code Contributor Location Time
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GUATEMALA Coauthors: Ana Giró, Mel
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Gutiérrez L (2007) Informe de avan
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Fig. 20.2 Average percent cover of
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JAMAICA Coauthors: Karl Aiken, Robe
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Fig. 21.2 Average percent cover of
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Munro JL, Williams DM (1985) Assess
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Map Code Contributor Location Time
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Timeline 11,000 CE: Human remains o
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Rodríguez-Martínez RE, Banaszak A
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April 2006: Multibeam mapping of is
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Fig. 24.2 Average percent cover of
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Map Contributor Location Time Perio
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6 Guzmán HM, Guevara CA (2001) Cor
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Map Code Contributor Location Time
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from disease and bleaching. Disease
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Timeline: 1987: Saba Marine Environ
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Fig. 28.2 Average percent cover of
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Fig. 29.2 Average percent cover of
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Lloyd G (2007) Review of the Policy
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Fig. 30.2 Average percent cover of
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Fig. 31.2 Average percent cover of
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TURKS & CAICOS ISLANDS Coauthors: B
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US VIRGIN ISLANDS Coauthors: Richar
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Fig. 33.2 Average percent cover of
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Beets J, Friedlander AM (1999) Eval
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39 Hay ME (1984) Patterns of fish a
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Fig. 34.2 Average percent cover of
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Bastidas C, Cróquer A, Zubillaga A
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Rodríguez-Ramírez A, Bastidas C,