Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
26
datasets available to search
ShareScore release 0.7.1
Dataset results
26 results for “crustose”
Tara Pacific 16S rRNA ASV table for bacterial communities of crustose coralline algae from the Tuamotu archipelago (French Polynesia)
<p>This data is the result of the primary analysis of the 16S rRNA gene sequencing data collected from the CCA samples collected during the Tara Pacific expedition. The analysis was conducted using cutadapt/snakemake/dada2 and usearch. A full README is contained within the parent data upload (<a href="https://doi.org/10.5281/zenodo.4451892">https://doi.org/10.5281/zenodo.4451892</a>).</p>
FIG. 4 in Two new crustose Cladonia species with strepsilin and other new lichens from the Serra de Maracaju, Mato Grosso do Sul, Brazil
FIG. 4. — Lecanora lichexanthoxylina Aptroot & M.F. Souza, sp. nov., holotype: A, habitus with UV; B, habitus. Width of pictures: A, 30 mm; B, 10 mm.
FIG. 3 in Two new crustose Cladonia species with strepsilin and other new lichens from the Serra de Maracaju, Mato Grosso do Sul, Brazil
FIG. 3. — Lecanora fluoroxylina Aptroot & M.F. Souza,sp. nov., isotype, habitus. Width of picture: 30 mm.
FIG. 2 in Two new crustose Cladonia species with strepsilin and other new lichens from the Serra de Maracaju, Mato Grosso do Sul, Brazil
FIG. 2. — Cladonia zebrathallina Aptroot & Spielmann, sp. nov., holotype: A, habitus; B, pycnidium; C, conidia. Width of pictures: A, 10 mm, B, 250 µm, C, 120 µm.
Bacidia fuscoviridis, another overlooked sorediate crustose lichen widely distributed in temperate eastern North America
<p>To evaluate the generic relationships of <em>Bacidia fuscovirdis </em>within Ramalinaceae we carried out BLASTn searches of the existing reference sequences of <em>B. fuscoviridis</em> in NCBI which recovered representatives of <em>Biatora </em>Ach., <em>Lecania </em>A.Massal. and <em>Mycobilimbia</em> Rhem, as the closest hits for ITS and the lone sequence of rpb2. Based on these results we used the published phylogeny of Ramalinaceae from Kistenich et al. (2018) as a guide and constructed a multi-locus dataset that mirrored their sampling of the clade containing <em>Bilimbia</em>, <em>Lecania</em> and <em>Mycobilimbia</em> with <em>Biatora</em> as an outgroup. We downloaded the mtSSU, ITS, nucLSU and RPB2 sequences used by those authors (see Table 1) and manually aligned each dataset in Mesquite 3.31 (Maddison & Maddison 2017. We then added the available reference sequences of<em> B. fuscoviridis </em>(three ITS sequences, one rpb2 sequence) to the relevant alignment, manually adjusted them, and defined all ambiguously aligned regions and gap-rich terminal regions in an exclusion set. The excluded regions were then manually deleted, terminal gaps transformed to missing data, and uncertainties and polymorphisms transformed to missing data. The alignments were then concatenated in Mesquite and exported a single PHYLIP file. The concatenated alignment was partitioned and RAxML v8.2x (Stamatakis 2006) was used to infer a maximum likelihood (ML) topology and bootstrapping was performed with 500 pseudoreplicates and implementing the model GTRGAMMA across all partitions. The results were visualized in FigTree 1.4.3 (Rambaut 2016).</p> <p>This data deposit includes the underlying files for the phylogeny presented in the published study (Curtis et al., Journal of the Torrey Botanical Society). It includes a translation table for GenBank accessions and terminal names used in the dataset, individual alignments for ITS, mtSSU, nucLSU and rpb2 all in NEXUS format, concatenated alignment in NEXUS and PHYLIP format as well as partitions file for RAxML, and the final tree figure presented in the publication.</p>
FIG. 1. — A, B. Cryptothecia duplofluorescens Aptroot & M.F in New crustose lichens from a tropical coastal area in Paraná (Brazil)
FIG. 1. — A, B. Cryptothecia duplofluorescens Aptroot & M.F. Souza, sp. nov.: A, thallus; B, thallus under UV light; C, soredia; D-F, Myriostigma xanthominiatum Aptroot & M.F. Souza, sp. nov.: D, thallus; E, thallus under UV light; F, ascus with ascospores; G, H, Herpothallon purpureum Aptroot & M.F. Souza, sp. nov.: G, hypophyllous thallus; H epiphyllous thallus; I, J, Wirthiotrema xanthopustulatum Aptroot & M.F. Souza, sp. nov.: I, thallus; J, thallus under UV light. All from holotypes. Scales: A, B, 4 mm; C, 30 µm; D, E, 5 mm; F, 80 µm; G, 7 mm, H-J, 5 mm.
Data from: The weight of the crust: biomass of crustose lichens in tropical dry forest represents more than half of foliar biomass
In recent years, our ecological knowledge of tropical dry forests has increased dramatically. However, the functional contributions of whole ecosystem components, such as lichens, remain mostly unknown. In these forests, the abundance of epiphyte crustose lichens is responsible for the characteristic white bark on most woody plants, conspicuous during the dry season, but the amount of resources that the lichen component represents remains unexplored. We estimated lichen biomass in a Mexican tropical dry forest using the bark area of trees, the dry mass of lichens per unit area and the percentage of bark covered by lichens, together with previously known tree densities. The lowest 2.5 m of the forests main trunks contained 188 kg/ha of lichen biomass, with lichens covering 85% of the available bark for trees <12 cm DBH and 38% for trees >12 cm. Total epiphytic lichen biomass was 1.34–1.99 Mg/ha. Lichen biomass represented 61% of the foliar biomass in the forest. To our knowledge, this is the first time that a lichen biomass estimate is provided for an ecosystem in which crustose lichens are the dominant lichen growth form. Crustose lichens are typically considered to contribute little to the total lichen biomass and to be difficult to include in ecological analyses. The high lichen biomass in this ecosystem implies a significant ecological role which so far is unexplored. We suggest the crustose lichen component should not be underestimated a priori in ecological studies, especially in ecosystems with abundant lichen cover.
FIG. 1 in Two new crustose Cladonia species with strepsilin and other new lichens from the Serra de Maracaju, Mato Grosso do Sul, Brazil
FIG. 1. — Cladonia gumboskii sp. nov., holotype, habitus.Width of picture: 9 mm.
Data from: The weight of the crust: biomass of crustose lichens in tropical dry forest represents more than half of foliar biomass
Open the record for dataset details and reuse information.
Data from: High abundances of crustose coralline algae inside cryptic coral habitats linked to coral reef functioning
Open the record for dataset details and reuse information.
Data from: Herteliana schuyleriana (Squamarinaceae), a new crustose lichen widespread in the Appalachian Mountains of eastern North America
Herteliana schuyleriana is described as new to science based on collections from throughout the Appalachian Mountains of eastern North America. Taxonomic placement is inferred from molecular phylogenic analysis of mtSSU sequence data that recovered the taxon as sister to the type species of Herteliana, H. gagei, and strongly supported these taxa as embedded within the Squamarinaceae. The new species is characterized by its occurrence on non-calcareous shaded rocks in inland forested habitats (vs. exposed maritime oceanic habitats), its greenish-blue crustose thallus, presence of abundant blastidia on the thallus surface, frequent sterility, and by the production of roccellic/angardianic acid together with occasional trace amounts of psoromic acid as accessories to atranorin.
Data from: Thelomma ocellatum, a range extension to the Yukon Territory and case study in the use of molecular data to recognize asexually reproducing crustose lichens
An unusual sterile, asexually reproducing crustose lichen was encountered during fieldwork in the Yukon Territory of Canada. Genus and family level placement of the taxon were precluded by a lack of both sexual characters and any non-sexual characters that would have suggested an unambiguous generic affiliation. Examination of mtSSU and nrITS sequence data of the taxon revealed it to be a member of the Caliciaceae, with a sister relationship to the genus Tholurna. Subsequent molecular phylogenetic analyses of mtSSU sequence data suggested conspecificity with Thelomma ocellatum, one of the few calicioid lichens that reproduce asexually via lichenized diaspores. Comparison of the material from the Yukon with reference specimens and descriptions of T. ocellatum confirmed the identification of these populations, which extend the known distribution of T. ocellatum considerably northward in North America.
FIGURE 2. Buellia rugosissima, holotype. A. Habit. B. Ascospores showing a strongly rugulate ornamentation. C in Three new species of crustose Physciaceae from Guatemala, with notes on some additional species
FIGURE 2. Buellia rugosissima, holotype. A. Habit. B. Ascospores showing a strongly rugulate ornamentation. C. Buellia-type ascospores.
FIGURE 3. Dimelaena subsquamulosa, holotype. A. Habit growing associated with Buellia rugosissima. B in Three new species of crustose Physciaceae from Guatemala, with notes on some additional species
FIGURE 3. Dimelaena subsquamulosa, holotype. A. Habit growing associated with Buellia rugosissima. B. Buellia-type ascospores with walls not ornamented.
FIGURE 1 in Three new species of crustose Physciaceae from Guatemala, with notes on some additional species
FIGURE 1. Indication of the main collecting sites. A. Area of Quezaltenango. B. Guatemala city. C. Mixco Viejo. D. Area of Coban. E. Monterrico (mentioned in brackets after the country under specimens examined).
FIGURE 4. Sculptolumina conradiae, holotype. A. Inmature ascospores with a single lumen. B. Young 1–2-septate ascospores. C–D. Mature 3 in Three new species of crustose Physciaceae from Guatemala, with notes on some additional species
FIGURE 4. Sculptolumina conradiae, holotype. A. Inmature ascospores with a single lumen. B. Young 1–2-septate ascospores. C–D. Mature 3-septate ascospores with four ±rounded lumina (similar to the Conradia-type) and walls not ornamented. D–E. Habit.
Data from: Thelomma ocellatum, a range extension to the Yukon Territory and case study in the use of molecular data to recognize asexually reproducing crustose lichens
Open the record for dataset details and reuse information.
Data from: Herteliana schuyleriana (Squamarinaceae), a new crustose lichen widespread in the Appalachian Mountains of eastern North America
Open the record for dataset details and reuse information.
Data from: The evolution of fungal substrate specificity in a widespread group of crustose lichens
Lichens exhibit varying degrees of specialization with regard to the surfaces they colonize, ranging from substrate generalists to strict substrate specialists. Though long recognized, the causes and consequences of substrate specialization are poorly known. Using a phylogeny of a 150-200 MYA clade of lichen fungi, we asked whether substrate niche is phylogenetically conserved, which substrates are ancestral, whether specialists arise from generalists or vice versa, and how specialization affects speciation/extinction processes. We found strong phylogenetic signal for niche conservatism. Specialists evolved into generalists and back again, but transitions from generalism to specialism were more common than the reverse. Our models suggest that for this group of fungi, "escape" from specialization for soil, rock and bark occurred, but specialization for wood foreclosed evolution away from that substrate type. In parallel, speciation models showed positive diversification rates for soil and rock dwellers but not other specialists. Patterns in the studied group suggest that fungal substrate specificity is a key determinant of evolutionary trajectory for the entire lichen symbiosis.
Figure 3 from: Svensson M, Ekman S, Klepsland JT, Nordin A, Thor G, von Hirschheydt G, Jonsson F, Knutsson T, Lif M, Spribille T, Westberg M (2017) Taxonomic novelties and new records of Fennoscandian crustose lichens. MycoKeys 25: 51-86. https://doi.org/10.3897/mycokeys.25.13375
Figure 3 - A Micarea subconfusa (UPS L-578286) B Mycoblastus sanguinarioides (UPS L-550384). Scale bars: 0.5 mm (A), 1 mm (B).
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.