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11th ICRS Abstract book - Nova Southeastern University

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18-33<br />

Agrra Data Can Distinguish Chronic From Acute Impacts To Wider Caribbean<br />

Reef Communities And Provide Baselines To Assess Future Changes<br />

Robert GINSBURG 1,2 , Philip KRAMER 3 , Judith LANG 2,4 , Kenneth MARKS* 2,5 ,<br />

Patricia RICHARDS KRAMER 6 , Robert STENECK 7<br />

1 Marine Geology & Geophysics, RSMAS, <strong>University</strong> of Miami, Miami, FL, 2 Ocean<br />

Research and Education Foundation, Coral Gables, 3 The Nature Conservancy, Sugarloaf<br />

Key, FL, 4 Independent, Ophelia, VA, 5 Independent, Boca Raton, FL, 6 Perigee<br />

Environmental, Big Pine Key, FL, 7 School of Marine Sciences, Darling Marine Center,<br />

<strong>University</strong> of Maine, Walpole, ME<br />

Standardised AGRRA coral health indicators (e.g., >5% recent mortality of outer colony<br />

surfaces) have quantified the immediate impacts of acute perturbations like mass<br />

bleaching and outbreaks of disease. The program’s reef-community condition indicators<br />

(e.g., old mortality of coral colony surfaces, live coral cover, abundance of benthic algae,<br />

AGRRA fish data) have assessed the effects of chronic stressors acting on longer (multimonths<br />

to multi-annual) time scales. Collectively the AGRRA data are a regional<br />

baseline of reef community status for the early 21st Century against which future changes<br />

can be compared. This baseline augments previous evidence for widespread reef decline<br />

at

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