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51 results for “Porites”
MCR LTER: Coral Reef: Porites growth, respiration, and photophysiology data in support of Edmunds 2012 Marine Biology, v159, 2149-2160
These data were generated from a one-time experiment in support of a coral ecophysiology manuscript; published in Marine Biology. Edmunds (2012) Marine Biology 159: 2149-2160 doi:10.1007/s00227-012-2001-y The hypothesis that was tested stated that high pCO2 (76.6 Pa and 87.2 Pa vs. 42.9 Pa) has no effect on the metabolism of juvenile massive Porites spp. after 11 days at 28 °C and 545 lmol quanta m-2 s-1. The response was assessed as aerobic dark respiration, skeletal weight (i.e., calcification), biomass, and chlorophyll fluorescence. Corals were collected from the shallow (3–4 m) back reef of Moorea, French Polynesia (17°28.6140 S, 149°48.9170 W), and experiments conducted during April and May 2011. An increase in pCO2 to 76.6 Pa had no effect on any dependent variable, but 87.2 Pa pCO2 reduced area-normalized (but not biomass-normalized) respiration 36 %, as well as maximum photochemical efficiency (Fv/Fm) of open RCIIs and effective photochemical efficiency of RCIIs in actinic light (DF/Fm0 ); neither biomass, calcification, nor the energy expenditure coincident with calcification (J g-1) was effected. These results do not support the hypothesis that high pCO2 reduces coral calcification through increased metabolic costs and, instead, suggest that high pCO2 causes metabolic depression and photochemical impairment similar to that associated with bleaching. Evidence of a pCO2 threshold between 76.6 and 87.2 Pa for inhibitory effects on respiration and photochemistry deserves further attention as it might signal the presence of unpredictable effects of rising pCO2. 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 2
MCR LTER: Coral Reef: Community Dynamics: Abundance and Species Richness of Fishes Associated with the Coral Porites rus 2000 thru 2011
These data describe the species richness and abundance as part of MCR LTER's reef fish monitoring program to track long-term patterns in species abundance and diversity. This study began in 2000 in the lagoons off of the north shore of the island of Moorea, French Polynesia and the dataset is updated annually. The abundance and life history stage (adults, juveniles or recruits) of all taxa of fishes associated with selected colonies (5-16 colonies per site) of the mound forming coral Porites rus are recorded at seven reef sites located along the north shore of Moorea. These sites are characterized by differences in water depth, distance to the fore reef and the number and types of neighboring corals. Counts are performed by a pair of divers using SCUBA and include semi-cryptic species. The collection of these data was suspended following the last survey conducted in July 2011 due to the extremely low abundance of live P. rus at these locations.
MCR LTER: Coral Reef: Porites biomass data in support of Edmunds and Putnam Roy. Soc. Biology Letters 2020
Growth was measured every two to four months following collection of genotypes of the coral Porites lobata and P. lutea from the back reef of Mo'orea, French Polynesia, in 2018. Measurements include size, bouyant weight, biomass and environment conditions. These data support a manuscript submitted by P. Edmunds and H. Putnam in 2020 to Royal Society Biology Letters titled 'Science-based approach to using growth rate to assess coral performance and restoration outcomes'. 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 2005-2020). This work represents a contribution of the Moorea Coral Reef (MCR) LTER Site.
75 Coral Endolith Bacterial Genomes (MAGs) from Red Sea corals Goniastrea edwardsi and Porites lutea
<p>The skeleton of reef-building corals harbors diverse microbial communities that can supply energy to the coral host tissues and might have an integral role in holobiont nutrient cycling. However, we are lacking functional insight of the endolithic microbiome at large. In particular, the link between endolithic microbiome diversity and encoded genomic potential to supply energy to the coral host during coral bleaching, in the absence of their Symbiodiniaceae photosymbionts, remains poorly understood. Here we assembled endolith bacterial MAGs from DNA of coral skeletons from Goniastrea edwardsi and Porites lutea, two common reef‐building corals from the central Red Sea.</p>
MCR LTER: Coral Reef: Branches and plates of Porites rus insensitive to OA and warming. Lenz and Edmunds, JEMBE 2017
Data in support of Lenz & Edmunds, JEMBE 2017. [doi:10.1016/j.jembe.2016.10.002] This study tested the hypothesis that intraspecific morphological plasticity within a scleractinian coral elicits differential responses to elevated PCO2 and temperature. In Mo'orea, French Polynesia, two short-term laboratory experiments (21 and 14 days) were conducted to test the effects of PCO2 (400 vs. 700 µatm), and PCO2 (400 vs 1000 µatm) combined with temperature (27.0 vs. 29.8 C), on branches and plates of Porites rus. Experiments employed two irradiances (~1000 vs 200 µmol photons m-2 s-1), which characterized the microenvironments on the shallow fringing reefs where branching and plating morphologies are common, respectively. Calcification of both morphologies was insensitive to PCO2, as well as the combined effects of elevated PCO2 and temperature. Mean calcification rates were faster in high light than in low light for both morphologies, and biomass was greater in plates than branches in all treatments. Together, our results suggest P. rus is robust to increased PCO2 and high temperature within the constraints of the treatments applied. Morphological plasticity in this species does not mediate physiological resistance to low pH and high temperature. 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 2005-2020). This work represents a contribution of the Moorea Coral Reef (MCR) LTER Site.
Morphological and genetic mechanisms underlying the plasticity of the coral Porites astreoides across depths in Bermuda
<p>This data repository contains the raw data used in the morphological analyses for "Morphological and genetic mechanisms underlying the plasticity of the coral Porites astreoides across depths in Bermuda" </p> <ul> <li><a href="http://dx.doi.org/10.1016/j.jsb.2023.108036" target="_blank" rel="noopener">10.1016/j.jsb.2023.108036</a></li> </ul>
Supplementary Dataset for "Exploring the temperature dependence of clumped isotopes in modern Porites corals"
<p>This supplementary dataset contains raw isotopic values used to generate all figures in the article "Exploring the temperature dependence of clumped isotopes in modern <em>Porites </em>corals” by Guo et al. </p>
Data from 'Hot spots of bleaching in massive Porites coral colonies'
<p>Data from 'Hot spots of bleaching in massive Porites coral colonies' published in <em>Marine Environmental Research</em>.</p>
𝛅11B and B/Ca measurements of the modern and fossil Porites corals from the east coast Hainan Island in the northern South China Sea
<p>This datasets contain the 𝛅<sup>11</sup>B and B/Ca determinations of three modern <em>Porites</em> corals and four ancient <em>Porites</em> collected from the east coast of Hainan Island in the northern South China Sea. The measurements of skeletal boron isotopes were carried out with a MC-ICP-MS, and the B/Ca was determined by ICP-MS. </p>
Data and code from: Evidence of rare occurrences of the Phoenix effect in the Hawaiian corals Porites compressa and Montipora capitata following mortality induced by a marine heatwave
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Data from: Brooding and parthenogenesis enhance the success of the coral, Porites astreoides relative to Orbicella annularis
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FIGURE 2 in The putative endemic Mexican reef coral Porites baueri Squires 1959 (Scleractinia Poritidae) is a synonym of the widespread coral Porites lobata Dana 1846
FIGURE 2. Results of canonical discriminant analysis showing the corallite variation of Porites species. Crosses = P. lobata, circles = P. lobata type (USNM652), squares = P. baueri type (AMNH3348), diamonds = P. paschalensis type (USNM68279), triangles = P. excavata type (YPM1677A). Notice that the full variation of P. baueri corallites (close squares) fall within P. lobata (crosses) corallite variation.
Temperature control on high-resolution SIMS oxygen isotopic compositions in Porites coral skeletons
<p>The dataset includes all data for "Temperature control on high-resolution SIMS oxygen isotopic compositions in Porites coral skeletons" by Zou et al. from Guangzhou Institute of Geochemistry.</p>
Data from: Heritable differences in fitness-related traits among populations of the mustard hill coral, Porites astreoides
A population's potential for rapid evolutionary adaptation can be estimated from the amount of genetic variation in fitness-related traits. Inshore populations of the mustard hill coral (Porites astreoides) have been shown to be more tolerant to thermal stress than offshore populations, but it is unclear whether this difference is due to long-term physiological acclimatization or genetic adaptation. Here, we evaluated variation in growth rate and survival among 38 families of juvenile recruits of P. astreoides spawned by colonies originating from inshore and offshore locations. Recruits were reared in a common garden for 5 weeks and then subjected to two thermal treatments (28 and 31 °C) for 2.5 weeks. The most significant effects were detected during the first 5 weeks, before thermal stress was applied: 27–30% of variance in growth and 94% of variance in recruit survival was attributable to parental effects. Genotyping of eight microsatellite loci indicated that the high early mortality of some of the recruit families was not due to higher inbreeding. Post treatment, parental effects diminished such that only 10–15% of variance in growth rate was explained, which most likely reflects the dissipation of maternal effects. However, offshore-origin recruits still grew significantly less under elevated temperature compared with inshore-origin recruits. These differences observed in naive juvenile corals suggest that population-level variation in fitness in response to different thermal environments has a genetic basis and could represent raw material for natural selection in times of climate change.
Data from: Gene expression under chronic heat stress in populations of the mustard hill coral (Porites astreoides) from different thermal environments
Recent evidence suggests that corals can acclimatize or adapt to local stress factors through differential regulation of their gene expression. Profiling gene expression in corals from diverse environments can elucidate the physiological processes that may be responsible for maximizing coral fitness in their natural habitat and lead to a better understanding of the coral's capacity to survive the effects of global climate change. In an accompanying paper, we show that Porites astreoides from thermally different reef habitats exhibit distinct physiological responses when exposed to 6 weeks of chronic temperature stress in a common garden experiment. Here, we describe expression profiles obtained from the same corals for a panel of 9 previously reported and 10 novel candidate stress response genes identified in a pilot RNA-Seq experiment. The strongest expression change was observed in a novel candidate gene potentially involved in calcification, SLC26, a member of the solute carrier family 26 anion exchangers, which was down-regulated by 92-fold in bleached corals relative to controls. The most notable signature of divergence between coral populations was constitutive up-regulation of metabolic genes in corals from the warmer inshore location, including the gluconeogenesis enzymes pyruvate carboxylase and phosphoenolpyruvate carboxykinase and the lipid beta-oxidation enzyme acyl-CoA dehydrogenase. Our observations highlight several molecular pathways that were not previously implicated in the coral stress response and suggest that host management of energy budgets might play an adaptive role in holobiont thermotolerance.
Data from: Evidence for a host role in thermotolerance divergence between populations of the mustard hill coral (Porites astreoides) from different reef environments
Studying the mechanisms that enable coral populations to inhabit spatially varying thermal environments can help evaluate how they will respond in time to the effects of global climate change and elucidate the evolutionary forces that enable or constrain adaptation. Inshore reefs in the Florida Keys experience higher temperatures than offshore reefs for prolonged periods during the summer. We conducted a common garden experiment with heat stress as our selective agent to test for local thermal adaptation in corals from inshore and offshore reefs. We show that inshore corals are more tolerant of a 6-week temperature stress than offshore corals. Compared with inshore corals, offshore corals in the 31 °C treatment showed significantly elevated bleaching levels concomitant with a tendency towards reduced growth. In addition, dinoflagellate symbionts (Symbiodinium sp.) of offshore corals exhibited reduced photosynthetic efficiency. We did not detect differences in the frequencies of major (>5%) haplotypes comprising Symbiodinium communities hosted by inshore and offshore corals, nor did we observe frequency shifts ('shuffling') in response to thermal stress. Instead, coral host populations showed significant genetic divergence between inshore and offshore reefs, suggesting that in Porites astreoides, the coral host might play a prominent role in holobiont thermotolerance. Our results demonstrate that coral populations inhabiting reefs <10-km apart can exhibit substantial differences in their physiological response to thermal stress, which could impact their population dynamics under climate change.
FIGURE 3. Porites randalli spec. nov. SEM image showing corallite details. A in Porites randalli: a new coral species (Scleractinia, Poritidae) from American Samoa
FIGURE 3. Porites randalli spec. nov. SEM image showing corallite details. A: Holotype (SC 4161); B: Paratype and genetic sample # AS13 ()
FIGURE 1. Bayesian tree modified from Figure 1 in Porites randalli: a new coral species (Scleractinia, Poritidae) from American Samoa
FIGURE 1. Bayesian tree modified from Figure 1 in Forsman et al. 2009. Significant clades are collapsed to conserve space. The base of the triangles are proportionate to the number of sequences sampled, the height of the triangle is proportionate to the genetic divergence within the clade (the Porites sp. 2 clade is expanded). Thick black lines represent clade support values higher than 80% for Baysean, Neighbor Joining, and Maximum Parsimony methods. See Forsman et al. 2009 for complete details.
FIGURE 4 in Porites randalli: a new coral species (Scleractinia, Poritidae) from American Samoa
FIGURE 4. Porites randalli spec. nov.: Photographs of living colonies. A. P. randalli (left), next to P. lichen (right). B: Close up of whole P. randalli colony.
FIGURE 15. Porites solida, a in Some scleractinian corals (Scleractinia: Anthozoa) of Larak Island, Persian Gulf
FIGURE 15. Porites solida, a, exoskeleton; b, close up of corallites; c, underwater photograph of the colony; d, underwater photograph of polyps.
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