Multi‐year evaluation of rearing techniques for three sexually propagated Caribbean corals in a restoration setting

Restoration Ecology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

In response to declining coral populations worldwide, conservation groups are increasingly applying restoration strategies bolster abundance and diversity, including sexual propagation of corals. Collection fertilization gametes as well larval rearing settlement have been successful. However, post‐settlement stages remain a bottleneck (80–100% mortality), which makes this technique costly implement at scale. To address challenge, we compared the survival colony size three sexually propagated Caribbean species, Diploria labyrinthiformis , Pseudodiploria strigosa Orbicella faveolata reared levels investment: direct outplant reef, in situ field nursery rearing, ex aquaculture facility rearing. As part work St. Croix, United States Virgin Islands, recruits were for 1 year before being outplanted reef plots monitored annually subsequent years. The cost‐effectiveness each strategy was calculated monitoring time point via seeding unit yield cost per unit. Although low 4 years (0–1.8%), corals displayed significantly higher therefore lower than other two investment strategies. These results highlight benefits an stage increase long‐term juvenile cost‐effectiveness. return on suggests that outplanting may be viable strategy; however, proportion surviving highlights current limitations when degraded reefs.

Язык: Английский

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Surface Erosion Equations for Degradation Analysis of Several Common Three-Dimensional Shapes of Plastic Materials

Journal of Polymers and the Environment, Год журнала: 2024, Номер unknown

Опубликована: Июнь 14, 2024

Abstract Equations were derived for the biodegradative erosion of surfaces arbitrarily-sized circular and square objects, i.e., decrease in volume caused by catalytic activity enzymes secreted microorganisms attached to object surfaces. Surface is primary mode biodegradation polyhydroxyalkanoate (PHA) objects resting on ocean floor. Although derivations motivated a need assess time-varying ultimate disintegration PHA tubes straws benthic environment, generality was maintained during mathematical development such that resulting equations are also applicable other including cylindrical rings, discs, solid rods, plates, cubes, prisms. Moreover, abiotic degradation via physical erosion, not just biotic microbes. expressed terms ratio instantaneous mass initial mass, which generally nonlinear with respect time. The value this relative dimensions establish surface function its evolution over lifetime object. Hence, rate constant theory, but rather prescribed irregular loss original geometry 3D

Язык: Английский

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12. Habitat restoration and creation

Open Book Publishers, Год журнала: 2025, Номер unknown, С. 171 - 206

Опубликована: Апрель 21, 2025

This chapter summarizes evidence for the effectiveness of actions to restore or create habitat corals. Actions include using natural materials restore/repair/create corals; stabilizing damaged broken reefs; and structures made from unnatural

Язык: Английский

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14. Education and awareness

Open Book Publishers, Год журнала: 2025, Номер unknown, С. 357 - 358

Опубликована: Апрель 21, 2025

This chapter highlights the complexities of human behaviour and how education awareness coral conservation could lead to change needed mitigate considerable threats facing reefs.

Язык: Английский

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Reproductive phenology and sexual propagation of the pink sea fan Eunicella verrucosa Pallas, 1766 for coral restoration

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

The widespread decline of coral-dominated ecosystems due to human disturbances has highlighted the urgent need for active habitat restoration. Coral restoration using sexually produced individuals instead clonal fragments is essential reduce impacts on donor populations and promote genetic diversity, which vital adaptability environmental changes. However, most coral species, particularly those in temperate deep-water (> 50 m), critical knowledge reproduction larval ecology ex situ sexual propagation lacking. To address this gap, study, we provide first report spawning octocoral Eunicella verrucosa North-East Atlantic describe details development settlement. annual reproductive timing South-West Portugal was determined from samples collected as fisheries bycatch a single population source monitored comparison across distinct durations conditions. species exhibited split-spawning over about one month (mid September – mid October), with 3 major events approximately every 2 weeks. Spawning patterns suggest lunar periodicity but shifted between colonies kept Oocytes were positively buoyant developed into swimming larvae after days. Settlement trials substrates like natural rock, CCA, gorgonian skeleton, showed behaviour testing two weeks post-spawning, settlement activity continuing three months. Fully recruits observed month, sclerite production starting before tentacle development. New continued up months, indicating prolonged competency period. This study provides crucial data efforts ex situ vulnerable species.

Язык: Английский

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Living Coral Displays, Research Laboratories, and Biobanks as Important Reservoirs of Chemodiversity with Potential for Biodiscovery

Marine Drugs, Год журнала: 2025, Номер 23(2), С. 89 - 89

Опубликована: Фев. 19, 2025

Over the last decades, bioprospecting of tropical corals has revealed numerous bioactive compounds with potential for biotechnological applications. However, this search involves sampling in natural reefs, and is currently hampered by multiple ethical technological constraints. Living coral displays, research laboratories, biobanks offer an opportunity to continue unravel chemodiversity, acting as "Noah's Arks" that may support molecules interest. This issue even more relevant if one considers reefs face unprecedent threats irreversible losses impair biodiscovery new products, processes, services. displays provide controlled environments studying producing both known metabolites under varied conditions, they are not prone common bottlenecks associated such loss source replicability. Research laboratories focus on a particular species or compound using were cultured ex situ, although differ from wild conspecifics metabolite production quantitative qualitative terms. Biobanks collect preserve specimens, tissues, cells, and/or information (e.g., genes, microorganisms), which offers plethora data study compounds' mode action without having cope issues related access, standardization, regulatory compliance. Bioprospecting these settings faces several challenges opportunities. On hand, it difficult ensure complexity highly biodiverse ecosystems shape chemodiversity corals. other possible maximize biomass fine tune synthesis interest environments. Collaborative efforts needed overcome barriers foster opportunities fully harness before in-depth knowledge pool irreversibly lost due reefs' degradation.

Язык: Английский

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Improved coral nursery production through contingent heat stress events via depth manipulation

Aquaculture, Год журнала: 2025, Номер unknown, С. 742558 - 742558

Опубликована: Апрель 1, 2025

Язык: Английский

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9. Threat

Open Book Publishers, Год журнала: 2025, Номер unknown, С. 81 - 102

Опубликована: Апрель 21, 2025

This chapter summarizes evidence for the effectiveness of actions to mitigate threat from pollution on corals. Actions include using chemicals or minerals neutralize remove pollutants; reducing industrial and military activities; removing garbage solid waste marine environment.

Язык: Английский

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4. Threat

Open Book Publishers, Год журнала: 2025, Номер unknown, С. 33 - 42

Опубликована: Апрель 21, 2025

This chapter summarizes evidence for the effectiveness of actions to mitigate effects energy production and mining on corals. Actions include prohibiting or limiting oil gas drilling; containing sediment during modifying aggregate extraction.

Язык: Английский

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2. Threat

Open Book Publishers, Год журнала: 2025, Номер unknown, С. 27 - 30

Опубликована: Апрель 21, 2025

This chapter summarizes evidence for the effectiveness of actions to mitigate effects residential and commercial development on corals. Actions include prohibiting or limiting development; landfilling reefs.

Язык: Английский

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