Laju Pertumbuhan Microfragment Acropora millepora pada Kondisi Terkontrol

BULETIN OSEANOGRAFI MARINA, Год журнала: 2024, Номер 13(2), С. 219 - 229

Опубликована: Март 21, 2024

Kerusakan ekosistem terumbu karang di Indonesia mencapai 43%, salah satu penyebabnya adalah eksploitasi untuk diperdagangkan menjadi hias. Salah hias yang yaitu dari jenis Acropora millepora. Oleh karena itu, budidaya sangat dibutuhkan dapat mengurangi pengambilan berlebihan alam. Budidaya dilakukan dengan transplantasi menggunakan metode microfragmentation pada secara ex-situ terkontrol. Penggunaan mempengaruhi kecepatan pertumbuhan karang. Penelitian ini bertujuan mengetahui laju dan tingkat kelangsungan hidup microfragment A. millepora hasil kondisi terkontrol ex-situ. Pengamatan data dalam waktu 5 bulan, pengukuran software ImageJ. Hasil penelitian menunjukkan rata-rata sebesar 0.1 cm2/bulan pertambahan luasan area selama bulan 1.35 cm2. Tingkat 100%. sistem baik digunakan melakukan lingkungan lebih stabil dibandingkan in-situ. diartikan dikatakan berhasil The damage of coral reef ecosytems in reached one the causes is exploitation corals to be traded as ornamental coral. commonly corals. Hence, farming needed reduce harvesting wild. cultivation can done by transplantation using method nursery. Microfragmentation was used due its ability accelerate growth rate microfragment. This study aimed observe and survival microfragments transplanted with under controlled condition at Observation collection were conducted over months, measuring ImageJ software. results this exhibited that average cm2/month a 5-months increase measured nursery Ex-situ ideal for environment more stable than in-situ Thus, it concluded succeeded.

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Advancing coral micropropagation for coral restoration and reef engineering

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

Опубликована: Июнь 29, 2024

Abstract In the face of escalating threats posed by human-induced climate change, urgent attention to coral reef restoration is imperative due ongoing degradation. Here, we explored potential generating micropropagates as a tool rapidly generate tissue for and engineering. We developed hypersalinity-induced polyp bailout protocol simple attachment device support growth on commonly used substrates. found that hypersalinity induction, at rate < 1 ppt hr -1 , produced healthy Stylophora pistillata . The highest success (∼74%) was achieved in CaCO 3 substrate devices, which outperformed PVC (∼5%) Portland cement (∼48%). Settled displayed rapid rates both (0.037 mm 2 /day ± 0.002 SE) (0.057 0.008 substrates, while induced Our study provides detailed methodology reliably generating, attaching, growing underscores viable technique supporting engineering efforts.

Язык: Английский

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Testing the feasibility of coral nurseries in an upwelling area in the North Pacific of Costa Rica

Frontiers in Marine Science, Год журнала: 2024, Номер 11

Опубликована: Сен. 2, 2024

The decline of coral reefs has increased interest in ecological restoration. Due to the scarcity gardening projects Eastern Tropical Pacific, improving our understanding such techniques is key. We report results using branching Pocillopora spp. and massive species ( Pavona gigantea , clavus Porites lobata ) an upwelling area Costa Rica. examined whether nursery type influenced survival growth, how environmental conditions shaped monitored growth fragments n = 334) microfragments P. [ 148], 37], 66]) over 11 months. Survival at end period was 51% for spp., 59% 55% 17% with a after cease maintenance caused by COVID-19 lockdown. floating nurseries exhibited higher (7.52 ± 1.98 6.64 2.91 cm yr -1 than A-frame (4.16 2.35 ), which suggests benefits suspending fragments. For 1.92-4.66 2 were affected pigmentation loss, causing partial tissue loss mortality. Our point towards acclimation local conditions, show need develop site-specific cost-efficient species, allowing multi-species approach ensure long-term ecosystem recovery.

Язык: Английский

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Flow rates alter the outcome of coral bleaching and growth experiments

Deleted Journal, Год журнала: 2024, Номер 1(1)

Опубликована: Ноя. 4, 2024

It is important to consider flow rate explicitly in coral growth and bleaching studies across multiple species with differing life histories guide conservation, management captive culture. We quantified rates responses thermal stress (approx. 18 DHW) flow-through aquaria various current velocities test whether conditions alter experimental outcomes. Across natural (< 1 over 50 cm/sec), Montipora capitata, Pocillopora acuta, meandrina showed increased recovery at intermediate rates. Growth for all from no (50–100 turnovers-per-hour, ~ 10–30 cm/s), but then decreased highest (> 190 tph, > cm/s) although this trend was not significant P. meandrina. The treatment temperature differed species, ranging 4 tph the flow-loving 210 lagoonal M. indicating that regime alone predictive. Fragments same individual (e.g., acuta colony 8) held under identical continue die one (4 tph), whereas they recover (30 tph) or grow fastest (105 different treatments. Flow rarely reported literature, uncontrolled effects may help explain some of variation results literature. Significant differences among colonies, colony-by-flow interactions, preclude generalizations beyond can outcome both experiments.

Язык: Английский

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Shading does not lower thermal tolerance in the coral Montipora capitata: implications for conservation intervention

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

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Genet identity and season drive gene expression in outplanted Acropora palmata at different reef sites

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Ноя. 27, 2024

Coral reefs are experiencing decreases in coral cover due to anthropogenic influences. restoration is addressing this decline by outplanting large volumes of corals onto reef systems. Understanding how outplanted react at a transcriptomic level different outplant locations over time important, as it will highlight habitat affects the host and influences physiological measures. In study, dynamics four genets Acropora palmata were assessed year three sites Florida Keys. Genet identity was more important than sampling or site, with differing levels baseline immune protein production key drivers. Once accounting for genet, enriched growth processes identified winter, increased survival expression found summer. The effect site small, hypothesized differences autotrophic versus heterotrophic dependent on depth. We hypothesize that genotype an consideration restoration, gene could play role survivorship growth. Additionally, during cooler winter months may be beneficial higher processes, allowing establishment outplants system.

Язык: Английский

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Opportunities and Challenges in Restoration and Preservation of Marine and Coastal Ecosystems Highlighting Participation, Trust and Dialogue: The Case of Guadeloupe Island LIFE Project

Опубликована: Янв. 1, 2024

Язык: Английский

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Effectiveness of different nursery designs for the restoration of the threatened coral Acropora cervicornis in Culebra, Puerto Rico

Conservation Evidence Journal, Год журнала: 2023, Номер 20, С. 30 - 39

Опубликована: Янв. 1, 2023

The threatened staghorn coral Acropora cervicornis is an important reef-builder species in the Caribbean. Its ecological importance and critical status have prompted efforts to restore degraded populations. In this respect, nursery-based programmes effectively propagated A. helped increase population sizes. Despite many advances low-cost nursery designs, there still a need productivity while reducing costs. This study evaluates demographic performance two propagation structures: floating trees (FT) horizontal frames (HF). Two equal-sized fragments were collected from 50 healthy colonies. Each fragment was placed into FT or HF design. Survival, growth, branching, recorded for seven months. To address cost-effectiveness of techniques, we compared total cost producing corals between designs. Survival similar, with 91% 92% surviving HF, respectively. Although colonies nurseries grew faster produced more branches than those nurseries, these differences not statistically significant. Likewise, did differ designs despite being 1.5 times productive nurseries. Because similarity performance, selection could be based solely on their cost-effectiveness. analysis shows that using costs about 70% less FT. Thus, conclude frame (HF) are better propagating accelerating restoration activities.

Язык: Английский

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The Growth Rate of Cyphastrea Coral Fragment Under Controlled Condition

JURNAL BIOLOGI TROPIS, Год журнала: 2023, Номер 23(2), С. 104 - 110

Опубликована: Дек. 2, 2023

The role of corals was very important in coastal and marine ecosystems, whether terms education, ecology, socio-economy. Coral growth can be used as an indicators ecosystem health. This study aimed to observed survival rate the Cyphastrea coral fragments. fragments ex-situ sites conducted over a period 3 months. micro-fragmentation method applied this study. Several factors such water temperature, light levels, nutrient concentrations were measured controlled throughout using ImageJ software. Result exhibited that 100% 0.012 cm2/month. provides information on affect sites. result develop more effective strategies for reef restoration.

Язык: Английский

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