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12 results for “coral physiology”
The effects of environmental history and thermal stress on coral physiology and immunity
<p>This dataset has all data for the manuscript (Wall CB, CA Ricci, GE Foulds, LD Mydlarz, RD Gates, HM Putnam (2018) The effects of environmental history and thermal stress on coral physiology and immunity. <em>Marine Biology</em>). Data included a zipped archive shape file for creating Kāne'ohe Bay map, physical data (light and temperature) from Kāne'ohe Bay and laboratory experiments, pCO<sub>2</sub> data for Kāne'ohe Bay reef sites dowloaded from NOAA PMEL, and biological responses (PAM fluorometry, physiology, immune activity and oxidative profile). </p>
High physiological function for corals with thermally tolerant, host-adapted symbionts
<p>The flexibility to associate with more than one symbiont may considerably expand a host's niche breadth. Coral animals and dinoflagellate micro-algae represent one of the most functionally integrated and widespread mutualisms between two eukaryotic partners. Symbiont identity greatly affects a coral's ability to cope with extremes in temperature and light. Over its broad distribution across the Eastern Pacific, the ecologically dominant branching coral, <em>Pocillopora grandis</em>, depends on mutualisms with the dinoflagellates <em>Durusdinium glynnii</em> and <em>Cladocopium latusorum</em>. Measurements of skeletal growth, calcification rates, total mass increase, calyx dimensions, reproductive output and response to thermal stress were used to assess the functional performance of these partner combinations. The results show both host–symbiont combinations displayed similar phenotypes; however, significant functional differences emerged when exposed to increased temperatures. Negligible physiological differences in colonies hosting the more thermally tolerant <em>D. glynnii</em> refute the prevailing view that these mutualisms have considerable growth tradeoffs. Well beyond the Eastern Pacific, pocilloporid colonies with <em>D. glynnii</em> are found across the Pacific in warm, environmentally variable, near-shore lagoonal habitats. While rising ocean temperatures threaten the persistence of contemporary coral reefs, lessons from the Eastern Pacific indicate that co-evolved thermally tolerant host–symbiont combinations are likely to expand ecologically and spread geographically to dominate reef ecosystems in the future.</p>
Physiology of the widespread pulsating soft coral Xenia umbellata is affected by food sources, but not by water flow
<p>Coral energy and nutrient acquisition strategies are complex and sensitive to environmental conditions such as water flow. While high water flow can enhance feeding in hard corals, knowledge about the effects of water flow on the feeding of soft corals, particularly those pulsating, is still limited. In this study, we thus investigated the effects of feeding and water flow on the physiology of the pulsating soft coral <em>Xenia</em> <em>umbellata</em>. We crossed three feeding treatments i) no feeding, ii) particulate organic matter [POM] as phytoplankton, and iii) dissolved organic carbon [DOC] as glucose, with four water volume exchange rates (200, 350, 500 and 650 Lh<sup>-1</sup>) over 15 days. Various ecophysiological parameters were assessed including pulsation rate, growth rate, isotopic and elemental ratios of carbon (C) and nitrogen (N) as well as photo-physiological parameters of the Symbiodiniaceae (cell density, chlorophyll-<em>a</em> and mitotic index). Water flow had no significant effect but feeding had a substantial impact on the physiology of the <em>X. umbellata </em>holobiont. In the absence of food, corals exhibited significantly lower pulsation rates, lower Symbiodiniaceae cell density, and lower mitotic indices compared to the fed treatments, yet significantly higher chlorophyll-<em>a</em> per cell and total N content. Differences were also observed between the two feeding treatments, with significantly higher pulsation rates and lower chlorophyll-a per cell in the DOC treatment, but higher C and N content in the POM treatment. Our findings suggest that the <em>X. umbellata</em> holobiont can be viable under different trophic strategies, though favouring mixotrophy. Additionally, the physiology of the <em>X. umbellata</em> may be regulated through its own pulsating behaviour without any positive nor negative effects from different water flow. Thus, this study contributes to our understanding of soft coral ecology, particularly regarding the competitive success and widespread distribution of <em>X. umbellata</em>.</p>
A physiological crisis drives the coral recruitment bottleneck
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Physiology of the widespread pulsating soft coral Xenia umbellata is affected by food sources, but not by water flow
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High physiological function for corals with thermally tolerant, host-adapted symbionts
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Data from: Physiological responses of scleractinian coral to trace metal enrichment and thermal stress
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Coral physiology datasets (health/condition, biomarkers, IBR) under combined ocean warming and predation
<p>These datasets were obtained following an experiment testing the combined effects of gradual warming scenarios and predation wounds in coral condition (paleness, bleaching and mortality), cellular stress responses (heat shock protein Hsp70, total ubiquitin Ub, and total antioxidant capacity TAC) and physiological state (integrated biomarker response index, IBR) of seven Scleractinian coral species (<em>Acropora tenuis, Echinopora lamellosa, Montipora capricornis B - </em>brown and G - green<em> </em>morphotypes<em>, Galaxea fascicularis, Psammocora contigua </em>and<em> Turbinaria reniformis</em>) after being exposed for 60 days.</p>
Raman data for "Flow-driven micro-scale pH variability affects the physiology of corals and coralline algae under ocean acidification"
<p>This file contains the Raman data and code for "Flow-driven micro-scale pH variability affects the physiology of corals and coralline algae under ocean acidification" by Comeau et al. in Scientific Reports. Run the file, "run.R" in R to reproduce the analysis.</p> <p>Please see the published paper for methods and details: https://doi.org/10.1038/s41598-019-49044-w</p>
Raman data for "Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability"
<p>This file contains the Raman data and code for "Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability" by Cornwall et al. in Proceedings of the Royal Society B. Run the file, "run.R" in R to reproduce the analysis.</p> <p>Please see the published paper for methods and details: <a href="https://doi.org/10.1098/rspb.2018.1168">https://doi.org/10.1098/rspb.2018.1168</a></p>
Data from: Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability
Ocean acidification is a threat to the continued accretion of coral reefs, though some undergo daily fluctuations in pH exceeding declines predicted by 2100. We test whether exposure to greater pH variability enhances resistance to ocean acidification for the coral Goniopora sp. and coralline alga Hydrolithon reinboldii from two sites: one with low pH variability (< 0.15 units daily; Shell Island), and a site with high pH variability (up to 1.4 pH units daily; Tallon Island). We grew populations of both species for >100 days under a combination of differing pH variability (high/low) and means (ambient pH 8.05/ocean acidification pH 7.65). Calcification rates of Goniopora sp. were unaffected by the examined variables. Calcification rates of H. reinboldii were significantly faster in Tallon than Shell Island individuals, and Tallon Island individuals calcified faster in the high variability pH 8.05 treatment compared to all others. Geochemical proxies for carbonate chemistry within the calcifying fluid (cf) of both species indicated that only mean seawater pH influenced pHcf. pH treatments had no effect on proxies for Ωcf. These limited responses to extreme pH treatments demonstrates some calcifying taxa may be capable of maintaining constant rates of calcification under ocean acidification by actively modifying Ωcf.
Data from: Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability
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