scholarly journals Perspective: Untangling the causes of coral reef decline

2004 ◽  
Vol 38 (15) ◽  
pp. 286A-287A ◽  
Author(s):  
Janet Pelley
Keyword(s):  
Coral Reef ◽  
Reef Decline

scholarly journals Thermal plasticity in coral reef symbionts is mediated by oxidation of membrane lipids

2020 ◽  
Author(s):  
Marina Botana ◽  
Adriano Chaves-Filho ◽  
Alex Inague ◽  
Arthur Guth ◽  
Flavia Saldanha-Corrêa ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Coral Reef ◽  
Coral Bleaching ◽  
Membrane Lipids ◽  
Physiological Mechanism ◽  
Heat Sensitivity ◽  
Stress Theory ◽  
Thermal Plasticity ◽  
Coral Health ◽  
Reef Decline

Abstract The oxidation of polyunsaturated fatty acids (PUFA) is a common stress response across biomes with potential to trigger impairment of cell growth and reproduction. The oxidative stress theory of coral bleaching induced by global warming has been widely accepted to explain coral reef decline, but its underlying physiological mechanism remains under debate. Here we used lipidomic and population density data to examine cell cultures of three coral reef symbionts after a heat shock (sudden rise of 12 °C for 4 hours). Heat tolerance in S. microadriaticum and C. goreaui was characterized by preservation of thylakoid-derived glycolipids. Conversely, heat sensitivity in B. minutum was linked to elevated concentrations of oxidized PUFA esterified to glycolipids, suggesting that culture growth had ceased due to severe oxidative damage. Our findings provide a basis to further understand the role played by oxidative stress in coral bleaching and reveal novel biomarkers for the monitoring of symbiont-coral health.

Coral Reef Decline in the Caribbean

Science ◽  
2003 ◽  
Vol 302 (5644) ◽  
pp. 391c-393 ◽  
Author(s):  
R. W. Buddemeier
Keyword(s):  
Coral Reef ◽  
The Caribbean ◽  
Reef Decline

scholarly journals Forecasted coral reef decline in marine biodiversity hotspots under climate change

2015 ◽  
Vol 21 (7) ◽  
pp. 2479-2487 ◽  
Author(s):  
Patrice Descombes ◽  
Mary S. Wisz ◽  
Fabien Leprieur ◽  
Valerianio Parravicini ◽  
Christian Heine ◽  
...  
Keyword(s):  
Climate Change ◽  
Coral Reef ◽  
Marine Biodiversity ◽  
Biodiversity Hotspots ◽  
Reef Decline

scholarly journals The Presence of Biomarker Enzymes of Selected Scleractinian Corals of Palk Bay, Southeast Coast of India

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
R. Anithajothi ◽  
K. Duraikannu ◽  
G. Umagowsalya ◽  
C. M. Ramakritinan
Keyword(s):  
Coral Reef ◽  
Anthropogenic Impacts ◽  
Radical Scavenging ◽  
Scleractinian Corals ◽  
Habitat Destruction ◽  
Shoreline Development ◽  
Defensive Enzymes ◽  
Acropora Formosa ◽  
Reef Decline ◽  
Scavenging Enzymes

The health and existence of coral reefs are in danger by an increasing range of environmental and anthropogenic impacts. The causes of coral reef decline include worldwide climate change, shoreline development, habitat destruction, pollution, sedimentation and overexploitation. These disasters have contributed to an estimated loss of 27% of the reefs. If the current pressure continues unabated, the estimated loss of coral reef will be about 60% by the year 2030. Therefore, the present study was aimed to analyze the enzymes involved in stress induced by coral pathogen and its resistance. We focused on the enzymes involved in melanin synthesis pathway (phenoloxidase (PO) and peroxidases (POD)) and free radical scavenging enzymes (super oxide dismutase (SOD), catalase (CAT)) and glutathione peroxidase (Gpx) in selected scleractinian corals such asAcropora formosa, Echinopora lamellosa, Favia favus, Favites halicora, Poritessp., andAnacropora forbesi.Overall, PO activity of coral was significantly lower than that of zooxanthellae except forFavia favus.Coral colonies with lower PO and POD activities are prone to disease. Maximum antioxidant defensive enzymes were observed inFavia favusfollowed byEchinopora lamellose.It is concluded that assay of these enzymes can be used as biomarkers for identifying the susceptibility of corals towards coral bleaching induced by pathogen.

A common sense approach for confronting coral reef decline associated with human activities

2005 ◽  
Vol 51 (5-7) ◽  
pp. 481-485 ◽  
Author(s):  
Richard Owen ◽  
Carys Mitchelmore ◽  
Cheryl Woodley ◽  
Hank Trapido-Rosenthal ◽  
Tamara Galloway ◽  
...  
Keyword(s):  
Coral Reef ◽  
Common Sense ◽  
Human Activities ◽  
Reef Decline

scholarly journals Episodic Disturbance from Boat Anchoring Is a Major Contributor to, but Does Not Alter the Trajectory of, Long-Term Coral Reef Decline

PLoS ONE ◽  
2015 ◽  
Vol 10 (12) ◽  
pp. e0144498 ◽  
Author(s):  
Graham E. Forrester ◽  
Rebecca L. Flynn ◽  
Linda M. Forrester ◽  
Lianna L. Jarecki
Keyword(s):  
Coral Reef ◽  
Major Contributor ◽  
Reef Decline
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