scholarly journals A contemporary baseline record of the world’s coral reefs

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Alberto Rodriguez-Ramirez ◽  
Manuel González-Rivero ◽  
Oscar Beijbom ◽  
Christophe Bailhache ◽  
Pim Bongaerts ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Significant Contribution ◽  
Taxonomic Resolution ◽  
Spatially Explicit ◽  
Multi Scale ◽  
Tropical Coral ◽  
Before And After ◽  
Tropical Coral Reef ◽  
Proportional Cover

Abstract Addressing the global decline of coral reefs requires effective actions from managers, policymakers and society as a whole. Coral reef scientists are therefore challenged with the task of providing prompt and relevant inputs for science-based decision-making. Here, we provide a baseline dataset, covering 1300 km of tropical coral reef habitats globally, and comprised of over one million geo-referenced, high-resolution photo-quadrats analysed using artificial intelligence to automatically estimate the proportional cover of benthic components. The dataset contains information on five major reef regions, and spans 2012–2018, including surveys before and after the 2016 global bleaching event. The taxonomic resolution attained by image analysis, as well as the spatially explicit nature of the images, allow for multi-scale spatial analyses, temporal assessments (decline and recovery), and serve for supporting image recognition developments. This standardised dataset across broad geographies offers a significant contribution towards a sound baseline for advancing our understanding of coral reef ecology and thereby taking collective and informed actions to mitigate catastrophic losses in coral reefs worldwide.

Regime shifts on tropical coral reef ecosystems: future trajectories to animal-dominated states in response to anthropogenic stressors

2021 ◽  
Author(s):  
James J. Bell ◽  
Valerio Micaroni ◽  
Francesca Strano
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Regime Shift ◽  
Spatial Scales ◽  
Scleractinian Corals ◽  
Regime Shifts ◽  
Limited Information ◽  
Tropical Coral ◽  
Coral Reef Ecosystems ◽  
Tropical Coral Reef

Despite the global focus on the occurrence of regime shifts on shallow-water tropical coral reefs over the last two decades, most of this research continues to focus on changes to algal-dominated states. Here, we review recent reports (in approximately the last decade) of regime shifts to states dominated by animal groups other than zooxanthellate Scleractinian corals. We found that while there have been new reports of regime shifts to reefs dominated by Ascidacea, Porifera, Octocorallia, Zoantharia, Actiniaria and azooxanthellate Scleractinian corals, some of these changes occurred many decades ago, but have only just been reported in the literature. In most cases, these reports are over small to medium spatial scales (<4 × 104 m2 and 4 × 104 to 2 × 106 m2, respectively). Importantly, from the few studies where we were able to collect information on the persistence of the regime shifts, we determined that these non-scleractinian states are generally unstable, with further changes since the original regime shift. However, these changes were not generally back to coral dominance. While there has been some research to understand how sponge- and octocoral-dominated systems may function, there is still limited information on what ecosystem services have been disrupted or lost as a result of these shifts. Given that many coral reefs across the world are on the edge of tipping points due to increasing anthropogenic stress, we urgently need to understand the consequences of non-algal coral reef regime shifts.

scholarly journals Site Fidelity and Homing in Tropical Coral Reef Cardinalfish: Are They Using Olfactory Cues?

2006 ◽  
Vol 31 (3) ◽  
pp. 265-272 ◽  
Author(s):  
Kjell B. Døving ◽  
Ole B. Stabell ◽  
Sara Östlund-Nilsson ◽  
Rebecca Fisher
Keyword(s):  
Coral Reef ◽  
Site Fidelity ◽  
Olfactory Cues ◽  
Tropical Coral ◽  
Tropical Coral Reef

Multiple Factors driving Variability of CO2 Exchange Between the Ocean and Atmosphere in a Tropical Coral Reef Environment

2012 ◽  
Vol 18 (4) ◽  
pp. 357-386 ◽  
Author(s):  
Rachel F. S. Massaro ◽  
Eric Heinen De Carlo ◽  
Patrick S. Drupp ◽  
Fred T. Mackenzie ◽  
Stacy Maenner Jones ◽  
...  
Keyword(s):  
Coral Reef ◽  
Co2 Exchange ◽  
Reef Environment ◽  
Multiple Factors ◽  
Tropical Coral ◽  
Coral Reef Environment ◽  
Tropical Coral Reef

scholarly journals Climatic forcing and larval dispersal capabilities shape the replenishment of fishes and their habitat-forming biota on a tropical coral reef

2018 ◽  
Vol 8 (3) ◽  
pp. 1918-1928 ◽  
Author(s):  
Shaun K. Wilson ◽  
Martial Depcyznski ◽  
Rebecca Fisher ◽  
Thomas H. Holmes ◽  
Mae M. Noble ◽  
...  
Keyword(s):  
Coral Reef ◽  
Larval Dispersal ◽  
Climatic Forcing ◽  
Tropical Coral ◽  
Tropical Coral Reef

scholarly journals Adapt, move or die - how will tropical coral reef fishes cope with ocean warming?

2016 ◽  
Vol 23 (2) ◽  
pp. 566-577 ◽  
Author(s):  
Adam Habary ◽  
Jacob L. Johansen ◽  
Tiffany J. Nay ◽  
John F. Steffensen ◽  
Jodie L. Rummer
Keyword(s):  
Coral Reef ◽  
Reef Fishes ◽  
Coral Reef Fishes ◽  
Ocean Warming ◽  
Tropical Coral ◽  
Tropical Coral Reef

Current pattern and coral larval dispersion in a tropical coral reef system

2013 ◽  
Vol 68 ◽  
pp. 23-32 ◽  
Author(s):  
Isabel Cristina Chacon-Gomez ◽  
David Salas-Monreal ◽  
Mayra Lorena Riveron-Enzastiga
Keyword(s):  
Coral Reef ◽  
Current Pattern ◽  
Reef System ◽  
Tropical Coral ◽  
Tropical Coral Reef ◽  
Larval Dispersion ◽  
Coral Reef System

Seasonal absolute acoustic intensity, atmospheric forcing and currents in a tropical coral reef system

2012 ◽  
Vol 100 ◽  
pp. 102-112 ◽  
Author(s):  
José de Jesús Salas Pérez ◽  
David Salas-Monreal ◽  
María Adela Monreal-Gómez ◽  
Mayra Lorena Riveron-Enzastiga ◽  
Carme Llasat
Keyword(s):  
Coral Reef ◽  
Atmospheric Forcing ◽  
Acoustic Intensity ◽  
Reef System ◽  
Tropical Coral ◽  
Tropical Coral Reef ◽  
Coral Reef System

scholarly journals Thermal acclimation of tropical coral reef fishes to global heat waves

eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Jacob L Johansen ◽  
Lauren E Nadler ◽  
Adam Habary ◽  
Alyssa J Bowden ◽  
Jodie Rummer
Keyword(s):  
Coral Reef ◽  
Citrate Synthase ◽  
Heat Waves ◽  
Reef Fishes ◽  
Coral Reef Fishes ◽  
Major Life ◽  
Mobile Species ◽  
Organ Systems ◽  
Tropical Coral ◽  
Tropical Coral Reef

As climate-driven heat waves become more frequent and intense, there is increasing urgency to understand how thermally sensitive species are responding. Acute heating events lasting days to months may elicit acclimation responses to improve performance and survival. However, the coordination of acclimation responses remains largely unknown for most stenothermal species. We documented the chronology of 18 metabolic and cardiorespiratory changes that occur in the gills, blood, spleen, and muscles when tropical coral reef fishes are thermally stressed (+3.0°C above ambient). Using representative coral reef fishes (Caesio cuning and Cheilodipterus quinquelineatus) separated by >100 million years of evolution and with stark differences in major life-history characteristics (i.e. lifespan, habitat use, mobility, etc.), we show that exposure duration illicited coordinated responses in 13 tissue and organ systems over 5 weeks. The onset and duration of biomarker responses differed between species, with C. cuning – an active, mobile species – initiating acclimation responses to unavoidable thermal stress within the first week of heat exposure; conversely, C. quinquelineatus – a sessile, territorial species – exhibited comparatively reduced acclimation responses that were delayed through time. Seven biomarkers, including red muscle citrate synthase and lactate dehydrogenase activities, blood glucose and hemoglobin concentrations, spleen somatic index, and gill lamellar perimeter and width, proved critical in evaluating acclimation progression and completion, as these provided consistent evaluation of thermal responses across species.

scholarly journals Large dendrinids meet giant clam: the bioerosion trace fossil <i>Neodendrina carnelia</i> igen. et isp. n. in a <i>Tridacna</i> shell from Pleistocene–Holocene coral reef deposits, Red Sea, Egypt

Fossil Record ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Max Wisshak ◽  
Christian Neumann
Keyword(s):  
Coral Reef ◽  
Red Sea ◽  
Trace Fossil ◽  
Giant Clam ◽  
Shallow Marine ◽  
Tropical Coral ◽  
Tropical Coral Reef ◽  
Tridacna Maxima ◽  
Large Representative ◽  
Sea Coast

Abstract. The rosette-shaped microboring trace fossil Neodendrina carnelia igen. et isp. n. – a large representative of the ichnofamily Dendrinidae – is identified on the inner side of the giant clam Tridacna maxima from Pleistocene to Holocene coral reef deposits of the El Quseir district at the Egyptian Red Sea coast. The new dendritic bioerosion trace fossil is diagnosed as a radial rosette comprised of a prostrate system of roofless canals that ramify in a strictly dichotomous fashion forming intermittent branches of uniform width and rounded terminations. The trace appears to be rare, although in the type material it occurs in a cluster of more than a hundred specimens. The location of traces on the interior surface of the shell suggests that boring occurred post-mortem to the host. Its record is presently restricted to shallow marine, euphotic, tropical coral reef settings in the Western Indo-Pacific (Red Sea and Madagascar). The biological identity of the trace maker cannot be resolved yet, but several lines of reasoning allow speculations directed towards a complex attachment scar, perhaps produced by a benthic foraminiferan or a macrophyte.

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