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37 results for “coralline algae”
FIGURES 7–13 in Sporolithon yoneshigueae sp. nov. (Sporolithales, Corallinophycidae, Rhodophyta), a new rhodolith-forming coralline alga from the southwest Atlantic
FIGURES 7–13. Tetrasporangial anatomy of Sporolithon yoneshigueae. 7. Magnified surface view of a protuberance showing a sorus with large tetrasporangial compartment pores (RB 505770). Scale bar = 500 μm. 8. SEM of the surface of a sorus showing tetrasporangial compartment pores (RB 569425). Scale bar = 80 μm. 9. SEM of a single tetrasporangial compartment pore surrounded by 24 rosette cells that are slightly raised towards the pore opening (RB 569425). Note the mucilage ring that forms inward of the rosette cells, which only partially occludes the pore (arrow). Scale bar = 30 μm. 10. Vertical section of the outer thallus showing numerous tetrasporangial compartments buried in distinct layers (RB 505770). Note the distinct layers of elongate cells at the base of tetrasporangial compartments. Scale bar = 300 μm. 11. Magnified view of the thallus showing the paraphyses (arrows) between tetrasporangial compartments (RB 505770). Scale bar = 60 μm. 12. Vertical section of the outer thallus showing a raised sorus (RB 505770). Note the tetrasporangial compartment bearing a single tetrasporangium (t) and an apical pore plug (arrow). Scale bar = 50 μm. 13. Magnified view of the base of a tetrasporangial compartment showing a tetrasporangium (t) subtended by a single stalk cell (arrow) (RB 505770). Scale bar = 25 μm.
FIGURE 1 in Sporolithon yoneshigueae sp. nov. (Sporolithales, Corallinophycidae, Rhodophyta), a new rhodolith-forming coralline alga from the southwest Atlantic
FIGURE 1. Bathymetric map of the Abrolhos Shelf and Vitória–Trindade Chain showing the collecting sites (arrows) (data source: ETOPO 1).
FIGURES 2–6 in Sporolithon yoneshigueae sp. nov. (Sporolithales, Corallinophycidae, Rhodophyta), a new rhodolith-forming coralline alga from the southwest Atlantic
FIGURES 2–6. Vegetative features of Sporolithon yoneshigueae. 2. General morphology of the holotype (RB 569425) showing a lumpy to fruticose growth-form. Scale bar = 3 cm. 3. General morphology of a paratype (RB 505770) showing a warty growth-form. Scale bar = 4 cm. 4. Vertical section of the inner thallus showing the monomerous, plumose (non-coaxial) internal construction (RB 569425). Scale bar = 150 μm. 5. Magnified view of the outer thallus showing a flared epithallial cell (e) and a squat subepithallial initials (i) (RB 569425). Scale bar = 10 μm. 6. SEM of a fracture showing a secondary pit connection (arrow) and cell fusions (arrowheads) (RB 569425). Scale bar = 20 μm.
FIGURE 14 in Sporolithon yoneshigueae sp. nov. (Sporolithales, Corallinophycidae, Rhodophyta), a new rhodolith-forming coralline alga from the southwest Atlantic
FIGURE 14. Phylogenetic tree inferred from ML, MP, and NJ analyses with psbA sequences for 36 specimens from the orders Sporolithales and Hapalidiales. Values at nodes represent percentage of 1,000 bootstrap replicates for ML (left), MP (middle) and NJ (right). Branches lacking values received <70 % support.
Coralline algae from Siirt Province, Turkey
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Data from: Coralline algae in a naturally acidified ecosystem persist by maintaining control of skeletal mineralogy and size
To understand the effects of ocean acidification (OA) on marine calcifiers, the trade-offs among different sublethal responses within individual species and the emergent effects of these trade-offs must be determined in an ecosystem setting. Crustose coralline algae (CCA) provide a model to test the ecological consequences of such sublethal effects as they are important in ecosystem functioning, service provision, carbon cycling and use dissolved inorganic carbon to calcify and photosynthesize. Settlement tiles were placed in ambient pH, low pH and extremely low pH conditions for 14 months at a natural CO2 vent. The size, magnesium (Mg) content and molecular-scale skeletal disorder of CCA patches were assessed at 3.5, 6.5 and 14 months from tile deployment. Despite reductions in their abundance in low pH, the largest CCA from ambient and low pH zones were of similar sizes and had similar Mg content and skeletal disorder. This suggests that the most resilient CCA in low pH did not trade-off skeletal structure to maintain growth. CCA that settled in the extremely low pH, however, were significantly smaller and exhibited altered skeletal mineralogy (high Mg calcite to gypsum (hydrated calcium sulfate)), although at present it is unclear if these mineralogical changes offered any fitness benefits in extreme low pH. This field assessment of biological effects of OA provides endpoint information needed to generate an ecosystem relevant understanding of calcifying system persistence.
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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Data from: Coralline algae in a naturally acidified ecosystem persist by maintaining control of skeletal mineralogy and size
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A coralline alga gains tolerance to ocean acidification after multiple generations of exposure: data
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Transcriptomic responses of coralline algae
GEO Series GSE211882. Porolithon cf. onkodes; Sporolithon durum. 38 samples. Type: Expression profiling by high throughput sequencing.
Raman data for "A coralline alga gains tolerance to ocean acidification over multiple generations of exposure"
<p>This file contains the Raman data and code for "A coralline alga gains tolerance to ocean acidification over multiple generations of exposure" by Cornwall et al. in Nature Climate Change. Run the file, "run.R" in R to reproduce the analysis.</p> <p>Please see the published paper for methods and details (doi will be provided here when it becomes available).</p>
Crustose coralline algae metabolome datamatrix
<p><span>The resilience of coral reefs is dependent on the ability of corals to settle after disturbances. While crustose coralline algae (CCA) are considered important substrates for coral settlement, it remains unclear whether coral larvae respond to CCA metabolites and microbial cues when selecting sites for attachment and metamorphosis. This study tested the settlement preferences of an abundant coral species (<i>Acropora cytherea</i>) against six different CCA species from three habitats (exposed, subcryptic and cryptic), and compared these preferences with the metabolome and microbiome characterizing the CCA. While all CCA species induced settlement, only one species (<i>Titanoderma prototypum</i>) significantly promoted settlement on the CCA surface, rather than on nearby dead coral or plastic surfaces. This species had a very distinct bacterial community and metabolomic fingerprint. Furthermore, coral settlement rates and the CCA microbiome and metabolome were specific to the CCA preferred habitat, suggesting that microbes and/or chemicals serve as environmental indicators for coral larvae. Several amplicon sequence variants and two lipid classes - glycoglycerolipids and betaine lipids - present in <i>T. prototypum </i>were identified as potential omic cues influencing coral settlement. These results support that the distinct microbiome and metabolome of <i>T. prototypum</i> may promote the settlement and attachment of coral larvae.</span></p>
Crustose coralline algae metabolome datamatrix
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Seasonal growth and calcification of three species of crustose coralline algae in Moorea, French Polynesia
<p>We conducted an <em>in situ</em> experiment to investigate the spatial and seasonal dynamics of crustose coralline algae (CCA) growth and calcification over a period of 15 months, on two reefs habitats (i.e., back reef and fore reef). Three CCA species were studied representative of different microhabitat preferences (i.e., exposed, subcryptic and cryptic species). </p> <p>We measured marginal and vertical growth, net calcification as well as tissue mortality, palling and the occurrence of epiphytes. </p>
Morphological characterization of epiphytic non-geniculate coralline algae in China
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A coralline alga gains tolerance to ocean acidification after multiple generations of exposure: code
<p>Examples of code for the paper "A coralline alga gains tolerance to ocean acidification after multiple generations of exposure" </p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.