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281 results for “Acropora”
MCR LTER: Coral Reef Resilience: Live and Dead Pocillopora and Acropora Coral Colony Time Series from 2006 to 2011
These data describe the abundance, size structure, and morphologies of living and dead corals belonging to the genera Pocillopora and Acropora on the forereef (depth = 10 meters) in 2006, 2009, 2010, and 2011. Data were derived from a randomly chosen subset of photo quadrats associated with knb-lter-mcr.4. For each quadrat, individual coral colonies were identified to genus, scored as living or dead, and the total area of their footprint calculated. In addition, branch morphology was scored on a scale from 1 to 3, with 1 representing very tight spacing, and 3 representing open spacing among adjacent branches. This material is based upon work supported by the U.S. National Science Foundation under Grant No. OCE 16-37396 (and earlier awards) as well as a generous gift from the Gordon and Betty Moore Foundation. Research was completed under permits issued by the French Polynesian Government (Délégation à la Recherche) and the Haut-commissariat de la République en Polynésie Francaise (DTRT) (Protocole d'Accueil 2005-2018). This work represents a contribution of the Moorea Coral Reef (MCR) LTER Site.
Genomes and full-length 16S reference sequences for 27 Alpha- and Gamma-Proteobacterial isolates from Red Sea Acropora corals
<p>Coral-associated bacteria contribute to the biology of their host, but the underlying molecular interactions are largely unknown. To further our functional understanding, we obtained 27 alpha- and gamma-proteobacterial isolates, many of which are Rhodobacteraceae, from three coral species of the genus <em>Acropora </em>and assembled/annotated their genomes as a resource for further functional studies. Our results reveal the immense taxonomic and genetic diversity of common alpha- and gamma-proteobacterial coral-associated bacteria. We hope these data provide a framework to study the function of specific bacteria in the coral holobiont. Isolates are available upon request.</p>
Connectivity networks for Acropora corals on the GBR to investigate split spawning
<p>Connectivity networks for Acropora corals on the GBR to investigate split spawning.</p> <p>If using these outputs please cite the article:</p> <p>Hock K, Doropoulos C, Gorton R, Condie SA, Mumby PJ. (2019). <strong>Split spawning increases robustness of coral larval supply and inter-reef connectivity</strong>. Nature Communications <strong>10</strong>, 3463.</p> <p>Link to the paper:</p> <p>https://rdcu.be/bOW1x</p> <p> </p> <p> </p> <p> </p>
Nitrogen cycling and metabolic rates of aquacultured and wild Acropora coral from Guam in response to ammonium loading rates during 2020-2022
Rates from aquacultured corals and coral fragments collected in Guam in response to ammonium loading. These data are from two separate experiments, one using aquacultured corals and artificial seawater and light. The second was done with wild collected Acropora pistillata from two reef sites in Guam. The first site was West Hagåtña Bay (N13.479650, E144.741750; N13.479833, E144.741733) which had more nearby urban influences and was near the sewage outfall for the city (Redding et al. 2013). The second site was Luminao Reef (N13.4652417, E144.6477483; N13.465467, E144.648050) which was a more isolated reef on the seaward side of the breakwater for Guam’s major port. We measured respiration, gross primary production, 15N ammonium uptake to corals, related nitrogen cycling fluxes in the tanks (reminerization, net uptake, nitrification).
Fig. 2a-h. A in The Acropora Humilis Group (Scleractinia) Of The Snellius Expedition (1929-30)
Fig. 2a-h. A. humilis: a, complete coral (RMNH Coel.39585), b, branch (RMNH Coel.39591); A. gemmifera: c, complete coral (RMNH Coel.39581), d, branch (RMNH Coel.39578); A. monticulosa: e, complete coral, f, close-up (both RMNH Coel.39599); A. samoensis: g, complete coral (RMNH Coel.39612), h, close-up (RMNH Coel.39622). Scale bars 2 cm (a-c, e, g-h), 1.5 cm for d, f.
Fig. 1. Map showing the localities where Acropora corals were sampled during the first Snellius expedition, numbers correspond with Table 1 in The Acropora Humilis Group (Scleractinia) Of The Snellius Expedition (1929-30)
Fig. 1. Map showing the localities where Acropora corals were sampled during the first Snellius expedition, numbers correspond with Table 1.
Fig. 3a-j. A in The Acropora Humilis Group (Scleractinia) Of The Snellius Expedition (1929-30)
Fig. 3a-j. A. digitifera: a, complete specimen, b, branch (both RMNH Coel.39564); A. multiacuta: c, complete specimen (RMNH Coel.39601), d, close-up (RMNH Coel.39904), e, branch (RMNH Coel.39603); A. retusa: f, complete specimen (RMNH Coel.39607), g, branch (RMNH Coel.39604); A. fastigata: h, branch (RMNH Coel.39566), i-j, close-ups (both RMNH Coel.39567). Scale bars 2 cm: left scale bar for a, c-d, f, h; right scale bar for b, e, g, i-j.
Population connectivity and genetic offset in the spawning coral Acropora digitifera in Western Australia
<p><span>Anthropogenic </span>climate change has caused widespread loss of species biodiversity and ecosystem productivity across the globe, particularly on tropical coral reefs. Predicting the future vulnerability of reef-building corals, the foundation species of coral reef ecosystems, is crucial for cost-effective conservation planning in the Anthropocene. In this study, we combine regional population genetic connectivity and seascape analyses to explore patterns of genetic offset (the mismatch of gene-environmental associations under future climate conditions) in <em>Acropora digitifera</em> across 12 degrees of latitude in Western Australia. Our data revealed a pattern of restricted gene flow and limited genetic connectivity among geographically distant reef systems. Environmental association analyses identified a suite of loci strongly associated with the regional temperature variation. These loci helped forecasting future genetic offset in random forest and generalised dissimilarity models. These analyses predicted pronounced differences in the response of different reef systems in Western Australia to rising temperatures. Under the most optimistic future warming predictions (RCP 2.6), we observed a general pattern of increasing genetic offset with latitude. Under the most extreme climate scenario (RCP 8.5 in 2090-2100), coral populations at the Ningaloo World Heritage Area were predicted to experience a higher mismatch in genetic composition, compared to populations in the inshore Kimberley region. The study suggest complex and spatially heterogeneous patterns of climate-change vulnerability in coral populations across Western Australia, reinforcing the notion that regionally tailored conservation efforts will be most effective at managing coral reef resilience into the future.</p>
Larval dispersal patterns and connectivity of Acropora on Florida's Coral Reef and its implications for restoration
Since the 1980s, populations of Acropora cervicornis and A. palmata have experienced severe declines due to disease and anthropogenic stressors; resulting in their listing as threatened, and their need for restoration. In this study, larval survival and competency data were collected and used to calibrate a very high-resolution hydrodynamic model (up to 100m) to determine the dispersal patterns of Acropora species along the Florida's Coral Reef. The resulting connectivity matrices was incorporated into a metapopulation model to compare strategies for restoring Acropora populations. This study found that Florida's Coral Reef was historically a well-connected system, and that spatially selective restoration may be able to stimulate natural recovery. Acropora larvae are predominantly transported northward along the Florida's Coral Reef, however southward transport also occurs, driven by tides and baroclinic eddies. Local retention and self-recruitment processes were strong for a broadcast spawner with a long pelagic larval duration. Model simulations demonstrate that it is beneficial to spread restoration effort across more reefs, rather than focusing on a few reefs. Differences in population patchiness between the Acropora cervicornis and A. palmata drive the need for different approaches to their management plans. This model can be used as a tool to address the species-specific management to restore genotypically diverse Acropora populations on the Florida's Coral Reef, and its methods could be expanded to other vulnerable populations.
Figure 10 in Preliminary study on Acropora (Scleractinia: Astrocoeniina: Acroporidae) of the Persian Gulf, with emphasis on the north and northeastern areas
Figure 10. Acropora tortuosa: a) fresh colony out of water; b) portion of branch; c) portion of colony; d) SEM micrograph showing terminal part of branch; e) SEM micrograph showing coenosteum on a radial corallite; f) SEM micrograph showing close up view of coenosteum on radial corallite; g) top view of axial corallite; h) SEM micrograph showing coenosteum between radial corallites.
Figure 7 in Preliminary study on Acropora (Scleractinia: Astrocoeniina: Acroporidae) of the Persian Gulf, with emphasis on the north and northeastern areas
Figure 7. Acropora mossambica: a) portion of colony; b) top view of plate; c) portion of branch; d) SEM micrograph showing terminal part of branch; e) SEM micrograph showing close up view of radial corallites; f) SEM micrograph showing coenosteum on radial corallite; g) top view of axial corallite; h) SEM micrograph showing coenosteum between radial corallites.
Figure 6 in Preliminary study on Acropora (Scleractinia: Astrocoeniina: Acroporidae) of the Persian Gulf, with emphasis on the north and northeastern areas
Figure 6. Acropora arabensis: a) live colony, note the distinct white branch tips; b) portion of the colony; c) portion of branch; d) SEM micrograph showing close up view of radial corallites; e) SEM micrograph showing broken costae ornamentation on radial corallite; f) top view of axial corallite; g) SEM micrograph showing coenosteum between radial corallites.
Figure 3 in Preliminary study on Acropora (Scleractinia: Astrocoeniina: Acroporidae) of the Persian Gulf, with emphasis on the north and northeastern areas
Figure 3. Acropora aspera: a) portion of colony; b) portion of branch; c) SEM micrograph showing terminal part of branch; d) SEM micrograph from lateral view of radial corallites, note the gutter-shaped appearances formed by the outer walls; e) SEM micrograph showing coenosteum on a radial corallite; f) top view of axial corallite showing extent of primary and secondary septa; g) SEM micrograph showing coenosteum between radial corallites.
Acropora hemprichii genome
<p>Acropora hemprichii genome assembly, genome models, and gene annotation as available on http://ahem.reefgenomics.org/download/ </p> <ul> <li>Genome assembly scaffolded: Ahemp.RedSea.gaplosed_f2.ukon_genomic.fna.gz</li> <li>Gene models (CDS): Acropora_hemprichii_final_CDS_26865.fa.gz</li> <li>Gene models (proteins): Acropora_hemprichii_final_aa_26865.fa.gz</li> <li>Gene models (GFF3): Acropora_hemprichii.gff3.gz</li> <li>Annotation for gene models: Acropora_hemprichii_final_annot_protein-coding_26865.txt.gz </li> </ul> <p>Open Access paper: <a href="https://www.nature.com/articles/s41597-024-04080-8">https://www.nature.com/articles/s41597-024-04080-8</a></p>
Fig. 33 in An annotated and illustrated checklist of species of the coral genus Acropora (Cnidaria: Scleractinia) from Vamizi Island, Mozambique
Fig. 33. Acropora cf. willisae. Specimen number: VAM69. (A) live colony; (B) branch fragment; (C) axial corallites; (D) radial corallite; (E) coenosteum between corallites.
Fig. 32 in An annotated and illustrated checklist of species of the coral genus Acropora (Cnidaria: Scleractinia) from Vamizi Island, Mozambique
Fig. 32. Acropora cf. vermiculata. Specimen number: VAM70. (A) live colony; (B) branch detail; (C) radial corallites; (D) axial corallite; (E) coenosteum between corallites.
Fig. 31 in An annotated and illustrated checklist of species of the coral genus Acropora (Cnidaria: Scleractinia) from Vamizi Island, Mozambique
Fig. 31. Acropora valida Specimen number: VAM62. (A) live colony; (B) axial corallite; (C) branch fragment; (D) radial corallites; (E) coenosteum between corallites.
Fig. 29 in An annotated and illustrated checklist of species of the coral genus Acropora (Cnidaria: Scleractinia) from Vamizi Island, Mozambique
Fig. 29. Acropora cf. subulata. Specimen number: VAM4. (A) live colony; (B) branch fragment; (C); radial corallites (D) axial corallite.
Fig. 30 in An annotated and illustrated checklist of species of the coral genus Acropora (Cnidaria: Scleractinia) from Vamizi Island, Mozambique
Fig. 30. Acropora tenuis. Specimen number: (A, B, C, E) VAM 17; (D) VAM48. (A) live colony; (B) portion of colony; (C, D) portion of branch showing radial corallites; (E) axial corallite.
Fig. 27 in An annotated and illustrated checklist of species of the coral genus Acropora (Cnidaria: Scleractinia) from Vamizi Island, Mozambique
Fig. 27. Acropora robusta. (A) live colony; (B) main branch tip; (C, D) radial corallites on branchlets; (E) axial corallite; (F) sub-immersed radials and intercorallite area.
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