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
Процитировано
1
Journal of Hazardous Materials Advances, Год журнала: 2025, Номер unknown, С. 100578 - 100578
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
1
Coral Reefs, Год журнала: 2025, Номер unknown
Опубликована: Янв. 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
Язык: Английский
Процитировано
0
One Earth, Год журнала: 2025, Номер 8(3), С. 101193 - 101193
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
Biodiversity and Conservation, Год журнала: 2025, Номер unknown
Опубликована: Апрель 17, 2025
Язык: Английский
Процитировано
0
Restoration Ecology, Год журнала: 2025, Номер unknown
Опубликована: Май 14, 2025
Attachment of coral propagules to the reef surface is a bottleneck in efficiency and efficacy restoration techniques, with hypothesized tradeoffs between relative investment attachment (labor materials costs) propagule yield. Here we quantified required retention over 1 year for 11 seeding treatments involving combinations five methods four unit (SU; substrates designed settlement outplanting larvae) types compared an unattached control (concrete tetrapods wedged into structure by diver). Only two relatively costly (bolting SUs hole drilled Coralclip) provided significantly better than control. In subsequent experiment, cemented bolted ceramic stars plus controls were implemented settlers from species. Concrete attached cement had higher ( p < 0.001 both species), but did not have yield = 0.248 Acropora palmata ; 0.542 Diploria labyrinthiformis ) live corals controls. Attaching via bolts, though requiring approximately 10× greater labor initial (i.e. 120 seconds vs. 10 wedging controls), doubled (for D. , 8 months) or quadrupled A. 6 proportion outplanted SU retaining at least one coral) These results can help practitioners judge appropriate levels assisted recruitment using artificial their local context.
Язык: Английский
Процитировано
0
Marine Biology, Год журнала: 2025, Номер 172(7)
Опубликована: Июнь 5, 2025
Язык: Английский
Процитировано
0
Coral Reefs, Год журнала: 2024, Номер 43(5), С. 1483 - 1496
Опубликована: Сен. 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.
Язык: Английский
Процитировано
2
Restoration Ecology, Год журнала: 2024, Номер unknown
Опубликована: Сен. 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.
Язык: Английский
Процитировано
2
Invertebrate Biology, Год журнала: 2024, Номер unknown
Опубликована: Окт. 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.
Язык: Английский
Процитировано
2