Rising to the challenge of sustaining coral reef resilience

Trends in Ecology & Evolution, Journal Year: 2010, Volume and Issue: 25(11), P. 633 - 642

Published: Aug. 27, 2010

Language: Английский

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Overfishing and nutrient pollution interact with temperature to disrupt coral reefs down to microbial scales

Nature Communications, Journal Year: 2016, Volume and Issue: 7(1)

Published: June 7, 2016

Abstract Losses of corals worldwide emphasize the need to understand what drives reef decline. Stressors such as overfishing and nutrient pollution may reduce resilience coral reefs by increasing coral–algal competition reducing recruitment, growth survivorship. Such effects themselves develop via several mechanisms, including disruption microbiomes. Here we report results a 3-year field experiment simulating pollution. These stressors increase turf macroalgal cover, destabilizing microbiomes, elevating putative pathogen loads, disease more than twofold mortality up eightfold. Above-average temperatures exacerbate these effects, further disrupting microbiomes unhealthy concentrating 80% in warmest seasons. Surprisingly, nutrients also bacterial opportunism bitten parrotfish, turning normal trophic interactions deadly for corals. Thus, impact down microbial scales, killing sensitizing them predation, above-average opportunism.

Language: Английский

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Bioinspired marine antifouling coatings: Status, prospects, and future

Progress in Materials Science, Journal Year: 2021, Volume and Issue: 124, P. 100889 - 100889

Published: Nov. 11, 2021

Language: Английский

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Coral-associated micro-organisms and their roles in promoting coral health and thwarting diseases

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2013, Volume and Issue: 280(1755), P. 20122328 - 20122328

Published: Jan. 30, 2013

Over the last decade, significant advances have been made in characterization of coral microbiota. Shifts its composition often correlate with appearance signs diseases and/or bleaching, thus suggesting a link between microbes, health and stability reef ecosystems. The understanding interactions coral-associated microbiota is informed by on-going other microbiomes, which suggest that metabolic pathways functional capabilities define ‘core’ more accurately than taxonomic diversity members. Consistent this hypothesis, there does not appear to be consensus on specificity corals microbial commensals, even though recent studies report potentially beneficial functions bacteria. They cycle sulphur, fix nitrogen, produce antimicrobial compounds, inhibit cell-to-cell signalling disrupt virulence opportunistic pathogens. While their documented, it certain whether or how these microbes are selected hosts. Therefore, role innate immunity, signal nutrient exchange establishment controlling will probably reveal ancient, evolutionarily conserved mechanisms dictate outcomes host–microbial interactions, impact resilience host.

Language: Английский

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Human activity selectively impacts the ecosystem roles of parrotfishes on coral reefs

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2011, Volume and Issue: 279(1733), P. 1621 - 1629

Published: Nov. 16, 2011

Around the globe, coral reefs and other marine ecosystems are increasingly overfished. Conventionally, studies of fishing impacts have focused on population size dynamics targeted stocks rather than broader ecosystem-wide effects harvesting. Using parrotfishes as an example, we show how reef fish populations respond to escalating pressure across Indian Pacific Oceans. Based these abundance data, infer potential impact four key functional roles performed by parrotfishes. Rates bioerosion predation highly sensitive human activity, whereas grazing sediment removal resilient fishing. Our results offer new insights into vulnerability resilience ever-growing footprint. The depletion fishes causes differential decline ecosystem functions, radically changing setting stage for future ecological surprises.

Language: Английский

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Coral–macroalgal phase shifts or reef resilience: links with diversity and functional roles of herbivorous fishes on the Great Barrier Reef

Coral Reefs, Journal Year: 2010, Volume and Issue: 29(4), P. 1005 - 1015

Published: Aug. 11, 2010

Language: Английский

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Coralline algae (Rhodophyta) in a changing world: integrating ecological, physiological, and geochemical responses to global change

Journal of Phycology, Journal Year: 2014, Volume and Issue: 51(1), P. 6 - 24

Published: Dec. 6, 2014

Coralline algae are globally distributed benthic primary producers that secrete calcium carbonate skeletons. In the context of ocean acidification, they have received much recent attention due to potential vulnerability their high‐Mg calcite skeletons and many important ecological roles. Herein, we summarize what is known about coralline algal ecology physiology, providing understand responses global climate change. We review impacts these changes, including rising temperatures, pollution, on growth calcification. also assess ongoing use as marine proxies via calibration skeletal morphology geochemistry environmental conditions. Finally, indicate critical gaps in our understanding calcification physiology highlight key areas for future research. These include analytical recently become more accessible, such resolving phylogenetic relationships at all taxonomic ranks, elucidating genes regulating photosynthesis calcification, calibrating geochemical metrics, well research directions broadly applicable change ecology, importance community‐scale long‐term experiments stress response.

Language: Английский

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Effects of Coral Reef Benthic Primary Producers on Dissolved Organic Carbon and Microbial Activity

PLoS ONE, Journal Year: 2011, Volume and Issue: 6(11), P. e27973 - e27973

Published: Nov. 18, 2011

Benthic primary producers in marine ecosystems may significantly alter biogeochemical cycling and microbial processes their surrounding environment. To examine these interactions, we studied dissolved organic matter release by dominant benthic taxa subsequent remineralization the lagoonal reefs of Moorea, French Polynesia. Rates photosynthesis, respiration, carbon (DOC) were assessed for several common reef organisms from backreef habitat. We community response to exudates each producer measuring bacterioplankton growth, DOC drawdown two-day dark dilution culture incubations. Experiments conducted six producers: three species macroalgae (each representing a different algal phylum: Turbinaria ornata – Ochrophyta; Amansia rhodantha Rhodophyta; Halimeda opuntia Chlorophyta), mixed assemblage turf algae, crustose coralline algae (Hydrolithon reinboldii) hermatypic coral (Porites lobata). Our results show that all five types but not coral, exuded significant amounts labile into In general, with highest rates photosynthesis released most yielded greatest growth; produced nearly twice as much per unit surface area than other (14.0±2.8 µmol h−1 dm−2), stimulating rapid growth (0.044±0.002 log10 cells h−1) concomitant oxygen (0.16±0.05 L−1 dm−2). demonstrate can fraction photosynthetically-fixed DOC, vary species, this is available consumed associated microbes. These data provide compelling evidence differentially influence dynamics parameters (i.e., availability, bacterial abundance metabolism) communities.

Language: Английский

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Responses of Coral-Associated Bacterial Communities to Local and Global Stressors

Frontiers in Marine Science, Journal Year: 2017, Volume and Issue: 4

Published: Aug. 15, 2017

The microbial contribution to ecological resilience is still largely overlooked in coral reef ecology. Coral-associated bacteria serve a wide variety of functional roles with reference the host, and thus, composition overall microbiome community can strongly influence health survival. Here, we synthesize findings recent studies (n=45) that evaluated impacts top three stressors facing reefs, climate change, water pollution overfishing, on structure diversity. Contrary species losses are typical many communities under stress, here show richness tends be higher rather than lower for stressed corals (i.e. ~60% cases), regardless stressor. Microbial responses stress were taxonomically consistent across stressors, specific taxa typically increasing abundance (e.g. Vibrionales, Flavobacteriales, Rhodobacterales, Altermonadales, Rhizobiales, Rhodospirillales Desulfovibrionales) others declining Oceanosprillales). Emerging evidence also suggests may increase beta diversity amongst colonies, potentially reflecting reduced ability host regulate its microbiome. Moving forward, will need discern implications stress-induced shifts hosts able use identify resilient corals. present supports hypothesis play important resilience, encourage focus contributions future research.

Language: Английский

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Coral and macroalgal exudates vary in neutral sugar composition and differentially enrich reef bacterioplankton lineages

The ISME Journal, Journal Year: 2013, Volume and Issue: 7(5), P. 962 - 979

Published: Jan. 10, 2013

Language: Английский

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