Optimized recess design in artificial structures dramatically enhances coral settlement and survival DOI Creative Commons
Jessica Reichert, Hendrikje Jorissen, Crawford Drury

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Ноя. 15, 2024

Abstract The rapid decline of coral reefs prompts the need for new, scalable restoration approaches. Focusing on larvae has a great potential scalability, as single colony can release many thousands offspring which vast majority do not find suitable habitat and die. Here, we designed range adaptable modules with distinct geometric features hypothesized to enhance settlement survival. In tank field experiments, explored properties dimensions most successful structural features, examined influence hydrodynamics. Modules spiral recesses outperformed others, increasing by about 80-fold post-settlement survival over year 20−50-fold compared controls. Settlement was greatest cryptic edges 17 mm deep 15 wide ∼56 µmol m -2 s -1 photosynthetic active radiation (i.e., ∼28% incoming light). more pronounced under high-flow conditions, suggesting crucial role micro-scale hydrodynamics in entraining settling larvae. Integrating informed into or engineering structures provide novel, scalable, cheap, self-sustaining approach reef restoration.

Язык: Английский

Seeded Acropora digitifera corals survive best on wave‐exposed reefs with grazing from small fishes DOI Creative Commons
Taylor N. Whitman, Saskia Jurriaans,

Carine D. Lefévre

и другие.

Restoration Ecology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 25, 2025

Coral seeding is a restoration technique developed to replenish degraded reefs; however, grazing by herbivorous fish can impede coral survival post deployment. To investigate the impacts of hydrodynamics and on seeded‐coral survival, we deployed aquaria‐reared Acropora digitifera spat engineered‐seeding devices across 10 sites spanning wave‐energy gradient at Moore Reef (Great Barrier Reef, Australia). Two were used role grazing: fish‐exclusion device featureless control. After 1 year, over 60% had live corals. High‐energy 83–91% yield (i.e., device‐level survival) three times more survivors than low‐energy sites. Exclusion significantly improved moderate‐to‐low flow where excavating parrotfish abundant. Survival was also influenced biological characteristics site, with Labrids ( Thalassoma , Gomphosus ), Acanthurids Acanthurus Zebrasoma Blennids Cirripectes encrusting non‐ Scleractinian corals, coralline algae, ascidians. Our study demonstrates that wave energy, activity, benthic constituents all impact after seeding. Assessing potential for positive drivers prior deployment could improve efficacy

Язык: Английский

Процитировано

1
Benthic communities influence coral seeding success at fine spatial scales DOI Creative Commons
Cathie A. Page, Christine Giuliano, Carly J. Randall

и другие.

Restoration Ecology, Год журнала: 2024, Номер 32(7)

Опубликована: Июнь 24, 2024

The deployment of engineered substrates seeded with newly settled corals is a technique being developed to increase the numbers juvenile on reefs goal improving reef resilience in response climate warming. Using hierarchical sampling design, we explored spatial scales at which coral (spat) survival and growth varied situ investigated environmental drivers spat success southern inshore Great Barrier Reef. After 10 months, variation size was greatest smallest scale (1–2 m) (27 11% variation, respectively), indicating main post‐settlement are occurring. Crustose coralline algae (CCA) cover seeding units prior significant driver short‐ long‐term (22% variation). Survival Acropora millepora A. muricata did not differ according benthic community variation. Increasing branching correlated decreased Montipora aequituberculata spat, although CCA plugs remained most influential factor determining survival. Interspecific higher side‐facing orientation suggest natural method, warranting further experiments refine species selection methods upscaling. High within‐site highlights need for future studies ecological factors driving mortality fine scales.

Язык: Английский

Процитировано

3
Paired metabolomics and volatilomics provides insight into transient high light stress response mechanisms of the coral Montipora mollis DOI Creative Commons
Natasha Bartels, J. L. Matthews, Caitlin A. Lawson

и другие.

Metabolomics, Год журнала: 2024, Номер 20(4)

Опубликована: Июнь 17, 2024

The coral holobiont is underpinned by complex metabolic exchanges between different symbiotic partners, which are impacted environmental stressors. chemical diversity of the compounds produced high and includes primary secondary metabolites, as well volatiles. However, metabolites volatiles have only been characterised in isolation so far. Here, we applied a paired metabolomic-volatilomic approach to characterise holistically response under stress. Montipora mollis fragments were subjected high-light stress (8-fold higher than controls) for 30 min. Photosystem II (PSII) photochemical efficiency values 7-fold control versus treatment corals immediately following exposure, but returned pre-stress levels after min recovery. Under stress, identified an increase carbohydrates (> 5-fold arabinose fructose) saturated fatty acids (7-fold myristic oleic acid), together with decrease acid derivatives both (e.g., 80% oleamide nonanal), other antioxidants (~ 85% sorbitol galactitol). These changes suggest short-term light induces oxidative Correlation analysis positive links sorbitol, galactitol, six 11 volatiles, four these previously antioxidants. This suggests that 19 may be related share similar functions. Taken together, our findings demonstrate how metabolomics-volatilomics illuminate broader shifts occurring identify linkages uncharacterised putatively determine their

Язык: Английский

Процитировано

2
The interplay of temperature, light, and substrate type in driving growth and reproduction of an important tropical crustose coralline alga DOI Creative Commons
Jenny Fong, Timothy L. Jackson, Florita Flores

и другие.

Journal of Applied Phycology, Год журнала: 2024, Номер 36(5), С. 3133 - 3145

Опубликована: Июль 18, 2024

Abstract Crustose coralline algae (CCA) from the genus Titanoderma are reported to induce high levels of coral larval settlement across a wide diversity species. Consequently, is promising taxon cultivate in aquaculture facilities for application reef restoration projects. However, knowledge on optimum conditions promote growth and reproduction limited. To investigate this, we cultured adult fragments sp. at two temperatures (27.5 or 30 °C) light (mean maximum midday irradiance 10 40 µmol photons m −2 s −1 ) three different tile materials (CaCO 3 , concrete, PVC). We found that combination 27.5 °C were best fragment growth. Greater number conceptacles formed under higher intensities, while temperature did not have an influence. Sporeling subsequent into juveniles only evident with substantially recruitment substrates made concrete. These results provide important insights developing optimal support projects using sexually produced corals.

Язык: Английский

Процитировано

0
Shading does not lower thermal tolerance in the coral Montipora capitata: implications for conservation intervention DOI Open Access
Hugo Ducret, Christopher R. Suchocki,

Claire E. Bardin

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Ноя. 15, 2024

Abstract Marine heatwaves trigger severe coral bleaching events that result in dramatic losses of reefs worldwide. An increasingly common method used to mitigate is shade portions reefs. However, as shaded corals become less exposed environmental stress, shading has also been hypothesized lower their thermal tolerance, which would be detrimental for survival. Here, we investigated how long-term modifies the response Montipora capitata both light and temperature stressors. After two years growth, Coral Bleaching Automated Stress System (CBASS) compare responses 73% unshaded during 1) stress under ambient light, 2) low 3) with stress. Results show are resistant than control ones heat high but not where no difference was detected. We further demonstrate intensity reduces decline photosynthetic efficiency when compared at regardless history colonies. Our data support light-mediated independent synergistic heat-induced suggest stresses different molecular cellular pathways. hereby confirm benefits short– underline importance acclimation conservation restoration

Язык: Английский

Процитировано

0
Optimized recess design in artificial structures dramatically enhances coral settlement and survival DOI Creative Commons
Jessica Reichert, Hendrikje Jorissen, Crawford Drury

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Ноя. 15, 2024

Abstract The rapid decline of coral reefs prompts the need for new, scalable restoration approaches. Focusing on larvae has a great potential scalability, as single colony can release many thousands offspring which vast majority do not find suitable habitat and die. Here, we designed range adaptable modules with distinct geometric features hypothesized to enhance settlement survival. In tank field experiments, explored properties dimensions most successful structural features, examined influence hydrodynamics. Modules spiral recesses outperformed others, increasing by about 80-fold post-settlement survival over year 20−50-fold compared controls. Settlement was greatest cryptic edges 17 mm deep 15 wide ∼56 µmol m -2 s -1 photosynthetic active radiation (i.e., ∼28% incoming light). more pronounced under high-flow conditions, suggesting crucial role micro-scale hydrodynamics in entraining settling larvae. Integrating informed into or engineering structures provide novel, scalable, cheap, self-sustaining approach reef restoration.

Язык: Английский

Процитировано

0