Journal of Hazardous Materials Advances, Journal Year: 2025, Volume and Issue: unknown, P. 100578 - 100578
Published: Jan. 1, 2025
Language: Английский
Citations
1
Coral Reefs, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 11, 2025
Abstract Controlling the growth of fouling organisms in coral aquaculture is a recognised approach to enhance survival during grow-out recruits. Herbivorous fish can reduce algae growth, though indiscriminate grazing by pose risk early life stages corals. To identify suitable age or size introduce recruit culture, settlement tiles with 1-week-old, single-polyp and 1-month-old, multi-polyp Acropora millepora, kenti Goniastrea retiformis were exposed “brusher”, “cropper” “concealed cropper” grazers for 24 h, addition manual aquarist cleaned treatment control uncleaned comparison. In general, acroporid recruits displayed lower mortality than across all types grazing, younger, smaller more vulnerable “brusher” functional group likely cause mortality. Morality was low controls corals, whilst generally saw slightly elevated under cleaning. Grazing Ctenochaetus binotatus resulted highest treatments week old, experiencing 2.5% 8.6% A. millepora , respectively, as high 88.9% G. . contrast, month old acroporids that 2–7 polyps < 1% probability when same C. grazing. intensity also played role, belonging higher bite rates caused Overall, Acanthurus nigrofuscus represented best trade-off between minimising reducing coverage on tiles. Based our results knowledge operations would gain most benefit introducing once corals reach stage at > 1 other fast growing species, later smaller, slower species such
Language: Английский
Citations
0
One Earth, Journal Year: 2025, Volume and Issue: 8(3), P. 101193 - 101193
Published: March 1, 2025
Language: Английский
Citations
0
Restoration Ecology, Journal Year: 2025, Volume and Issue: unknown
Published: April 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.
Language: Английский
Citations
0
Biodiversity and Conservation, Journal Year: 2025, Volume and Issue: unknown
Published: April 17, 2025
Language: Английский
Citations
0
Restoration Ecology, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 16, 2024
Coral reefs face threats from climate change and local pressures that lead to reductions in their physical structure, impacting biodiversity by limiting habitat availability. Despite many efforts actively restore damaged reefs, few projects provide thorough evaluations of success. This study measured the success “Reef Star” method at Mars Reef Restoration Project Indonesia reestablishing structure reef habitats were destroyed blast fishing. We used photogrammetry surveys measure 17 large sites (1000 m 2 each), calculating three complementary measures small‐ large‐scale complexity across degraded, restored, naturally healthy coral reefs. demonstrate restoration have successfully restored small‐scale complexity, as described surface metrics (3.22 ± 0.27 on reefs; 2.85 0.26 reefs) fractal dimension (2.27 0.02 2.24 reefs). demonstrates capacity for recover important ecosystem functions are lost degradation. However, while has delivered some increases compared degraded still exhibit lower values maximum vertical relief than due a lack structures. available might impact fish populations, meaning with limited may only support restricted range functions. Effective strategies must use mixture different methods target recovery structural multiple scales.
Language: Английский
Citations
2
Invertebrate Biology, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 28, 2024
Abstract Reproduction, embryological development, and settlement of corals are critical for survival coral reefs through larval propagation. Yet, many species corals, a basic understanding the early life‐history stages is lacking. In this study, we report our observations ex situ reproduction in massive reef‐building Porites cf. P. lobata across 2 years. Spawning occurred April May, on first day after full moon with at least h darkness between sunset moonrise, rising tide. Only small proportion observed had mature gametes or spawned (14–35%). Eggs were 185–311 μm diameter, spherical, homogenous, provisioned 95–155 algal cells (family Symbiodiniaceae). Males before females, fertilization rates high egg release. Larvae elliptical, ~300 long, symbiotic. Just days fertilization, larvae swam near bottom culture dishes competent to settle. Settlers began calcification metamorphosis, tentacles developed 10 attachment. Our contrast previous studies by suggesting an abbreviated pelagic period , which could lead isolation some populations. The thermal tolerance broad geographic range suggest that locally adapt wide environmental conditions, especially if retained. results study can inform future work reproduction, biology, dispersal, recruitment have ecological advantage over less resilient under climate change.
Language: Английский
Citations
2
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: July 6, 2024
Abstract As ocean warming threatens reefs worldwide, identifying corals with adaptations to higher temperatures is critical for conservation. Genetically distinct but morphologically similar ( i.e., cryptic) coral populations can be specialized extreme habitats and thrive under stressful conditions. These often associate locally beneficial microbiota (Symbiodiniaceae photobionts bacteria), clouding interpretation of the drivers thermal tolerance. Here, we leverage a holobiont (massive Porites ) high host-partner fidelity investigate adaptive variation across classic (“typical” conditions) characterized by light attenuation. We uncovered three cryptic lineages that exhibit limited micro-morphological variation; one lineage dominated (L1), had more even distributions (L2), third was restricted (L3). Two were closely related ∼4300 km away, suggesting these are widespread. All harbored Cladocopium C15 photobionts, strain-level compositions differed among reef types. L1 associated bacteria in each type, whereas L2 relatively stable associations. L3 hosted unique photobiont strains, signaling host-photobiont fidelity. Analysis harvesting capacity tolerance revealed key underpinning survival habitats. highest absorption efficiency lowest tolerance, it specialist. showing an intermediate habitat generalism, potentially explaining how survives well both findings reveal diverging strategies cope Resolving understanding populations; uncovering thermally-tolerant holobionts strengthen our evolution symbiosis, support global conservation restoration efforts.
Language: Английский
Citations
1
Coral Reefs, Journal Year: 2024, Volume and Issue: 43(5), P. 1483 - 1496
Published: Sept. 3, 2024
Abstract Coral restoration efforts have rapidly increased worldwide, including the development of several programmes on Great Barrier Reef (GBR) in recent years. While many utilise in-water nurseries to accelerate coral biomass yields, impact nursery environments propagule quality has not been examined despite importance fitness for ensuring resistant populations. Here, we investigated two indicators (lipid diversity and tissue protein abundance) Acropora millepora adults eggs grown versus native reef GBR, with assessed at sites (Blue Lagoon Rayban) one site Lagoon). Lipid profiles adult colonies varied by origin (nursery wild reef), corals exhibiting an elevated relative abundance storage lipids (diacylglycerols triacylglycerols) lipid classes responsible regulating membrane structure (phosphatidylcholines sterol esters), while were characterised a greater fatty acids involved immunoregulation. Comparing from different origins, offspring richer energy-storing triacylglycerols, as well ceramides phosphatidylcholines essential structure, had wax ester species also important energy storage. No differences found total (adult or eggs) egg physical characteristics (count size) between origins. Variations are consistent environmental conditions wild), highlighting need consider selection propagation when planning projects. Importantly, these findings demonstrate that highest A. differed those same origin, suggesting is more driving compared parental effects.
Language: Английский
Citations
1
Restoration Ecology, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 7, 2024
Caribbean coral reefs face unprecedented decline due to anthropogenic and environmental stressors, necessitating active restoration efforts. Among the strategies conserve restore reef ecosystems, land‐based sexual propagation of corals is crucial for preserving genetic diversity population resilience. This study explores efficacy utilizing native sea urchin herbivory control benthic macroalgal proliferation enhance growth in systems. Three captive‐reared species— Lytechinus variegatus , Tripneustes ventricosus Diadema antillarum —were evaluated their influence on algal cover sexually propagated brain Pseudodiploria strigosa . Juveniles each species were co‐cultured with 6‐month‐old colonies over a 105‐day experiment. Results indicated that all treatments effectively reduced compared controls; however, only T. significantly increased rate, while other did not have notable effect. Despite differences growth, survival was consistently high across treatments. Benthic community analysis revealed shifts composition, D. grazing associated crustose coralline algae. However, overgrazing by may resulted mild peripheral tissue damage some corals. Urchin remained high, suggesting potential downstream utilization (e.g. enhancement). highlights urchins as biocontrol agents propagation, emphasizing importance species‐specific interactions shaping communities promoting
Language: Английский
Citations
1