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.
2,556
datasets available to search
ShareScore release 0.9.0
Dataset results
2,556 results for “assemblages”
FIGURE 12 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 12. Megascleres of Claviscopulia facunda (SEM). A, pentactins; B, sarules; C, uncinates; D, pileate clavules; E, anchorate clavule.
FIGURE 4 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 4. Spicules of Hyalonema (Cyliconemaoida) alucia sp. nov. A, diactin of the basalia; B, choanosomal diactins; C, central thickening of choanosomal diactins; D, pinular pentactins; E, smooth pentactins; F, smooth hexactin; G, spined microxypentactin; H, spined microxyhexactin. (B–G: SEM; A, H: LM)
FIGURE 5 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 5. Amphidiscs of Hyalonema (Cyliconemaoida) alucia sp. nov. (SEM). A, macramphidiscs; B, mesamphidiscs; C, micramphidiscs.
FIGURE 13 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 13. Microscleres of Claviscopulia facunda (SEM). A, oxyhexactins; B, oxyhexasters; C, discohexasters.
FIGURE 11 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 11. Skeleton of Claviscopulia facunda. A, transversal section of the body tube wall; B, rays of the merged hexactins (SEM); C, dictyonal skeleton of the base; D, dermal frame; E, atrial frame; F, fused hexactins; G, bouquet of sceptrules; H, anchorate clavule at the spined pentactins form the structure of the dermal frame.
FIGURE 9 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 9. Microscleres of Dactylocalyx pumiceus (SEM). A, discohexaster; B, onychohexaster; C–D, oxyhexasters. Insets: actin tips.
Connecting Amazonian historical biogeography and local assemblages of understorey birds: recurrent guild proportionality within areas of endemism.
<p><strong>Aim:</strong> Current diversity patterns in local communities result from historical and contemporary events that operate at distinct spatial and temporal scales. However, the contribution of local and large-scale processes in structuring species diversity remain a contentious topic in ecology. We investigated diversity patterns (species richness, composition and number of captures) of understorey bird assemblages in Amazonian unflooded (<em>terra firme</em>) forests. We sought to understand whether understorey bird assemblages in distinct areas of endemism show distinct patterns of diversity, and whether species replacements among areas of endemism occur while the proportion of species within guilds remains stable.</p> <p><strong>Location:</strong> Amazonia.</p> <p><strong>Taxon: </strong>Understorey birds.</p> <p><strong>Methods:</strong> To investigate diversity patterns, we compiled studies that mist-netted birds at 11 regions across seven Amazonian areas of endemism. We used coverage-based rarefaction curves, non-metric multidimensional scaling (NMDS) and created a heatmap based on the proportion of captures in each area of endemism to access patterns of richness, composition and captures of understorey birds, respectively. The relative variance (RVgp index) was calculated to investigate the existence of guild proportionality within each area of endemism.</p> <p><strong>Results:</strong> Bird assemblages diverged across the seven areas of endemism, in terms of species richness, composition and captures. However, the proportion of species and individuals within guilds was similar among areas of endemism, indicating that species replacements across areas of endemism occur while maintaining the same ecological functions. Guild proportionality suggests that interspecific competition and resource availability are more important than environmental heterogeneity in structuring understorey bird assemblages.</p> <p><strong>Main conclusions:</strong> The similar proportion of species within guilds suggest that interspecific competition and resource availability are more important than environmental heterogeneity in structuring local assemblages, possibly via a process of limiting similarity in morphological and functional traits. The observed congruent structure in understorey bird assemblages across areas of endemism shows that coupled historical and ecological processes, operating at local to large scales, have led to current patterns of diversity and composition in Amazonian bird communities.</p>
Andean non-volant small mammals: a dataset of community assemblages of non-volant small mammals from the high Andes
<p><span>Information from diversity inventories is used to study patterns of biodiversity and species distribution; likewise, it may be useful to identify priority areas for conservation, and to guide future sampling efforts. In this context, we compiled information on non-volant small mammal communities from the high Andes (> 2,000 m.). Here we present an open resource data set containing information diversity (species composition, number of individuals captured ), inventory design (type of traps, sampling efforts), and environment (habitat) for both unpublished and published information. This study covers 630 mammalian communities, geographically distributed throughout the Andes in Venezuela, Colombia, Ecuador, Peru, Bolivia, Argentina, and Chile</span><span>. </span><span>We compiled a total of </span><span>26,412 individual records belonging to 240 species; the order with greatest number of records was Rodentia (n=25,319, 96.06%), followed by Didelphimorphia (n=373, 1.42%), Eulipotyphla (n=358, 1.36%) and Paucituberculata, (n=307, 1.16%). </span><span>Andean non-volant small mammal communities harbor </span><span>a range of 1-17 species</span><span>, </span><span>with 93.06 % of sites being composed of one to five species</span><span>, 27.78% of sites ranging in richness from six to ten species, and 4.17% are composed by more than ten species. </span><span>Multiple sampling methods were used to survey non-volant small mammals; the most representative methods being the use of snap-traps and Sherman traps, or a combination of both, in more than 81% of the studies.</span> <span>The <em>Andean Non-Volant Small Mammals</em> Data Paper represents the first </span><span>large dataset of faunal species inventories for Andes. </span><span>There are no copyright restrictions </span><span>associated with the use of this data se</span><span>t</span><span>. Please cite this Data Paper when its data are used total or partially in research</span><span> or teaching</span><span>.</span></p>
Gradual Enhancement of the Assemblage Stability of the Reed Rhizosphere Microbiome with Recovery Time
<p>This is a supplementary material for the article of "Gradual Enhancement of the Assemblage Stability of the Reed Rhizosphere Microbiome with Recovery Time"</p>
The Ordovician retroarc foreland basin on the Yangtze Block linked to the final assemblage of Gondwana
<p>Supplementary materials for the paper entitled<em><strong> </strong>The Ordovician retroarc foreland basin on the Yangtze Block linked to the final assemblage of Gondwana.</em></p>
Spatial assemblage of grassland communities and interrelationships with productivity
<p><span>Knowledge on the fine-scale spatial structure is very important for understanding plant community dynamics, as interactions among sessile plants mainly occur in the neighborhood. However, the spatial assemblage mechanism and interrelationships with productivity remain poorly understood. Here, species segregation index (Ms<sub>com</sub>) was used to quantify the interspecific segregation (or intraspecific aggregation) of the neighborhood in plant communities from three contrasting plateaus. We employed the coordinates for 125,726 individual plants (within 1 m<sup>2</sup> plots) sampled in natural grassland communities across Loess Plateau (LP), Mongolian Plateau (MP), and Tibetan Plateau (TP) to elucidate the assembly mechanisms of Ms<sub>com</sub> and interrelationships with above-ground net primary productivity (ANPP). We found that these grassland communities tended to assemble in intraspecific aggregations; the phenomena were more apparent in desert grassland communities. </span><span>Apart from the controls of self-organization, climatic heterogeneity also plays an important role in determining Ms<sub>com</sub>. In grassland communities on LP and MP, Ms<sub>com</sub> was predominantly affected by </span><span>reproductive allocation</span><span> (RA); whereas on TP, Ms<sub>com</sub> was more responsive and sensitive to climatic heterogeneity (especially precipitation and low temperatures).</span><span> We also found that Ms<sub>com</sub> better explained the overall variations in ANPP than species diversity, and mediated the response of ANPP to environmental variations; Ms<sub>com</sub> and environmental effects jointly explained 22.7, 19.1, and 49.8% of the variations in ANPP on LP, MP, and TP, respectively. Our findings provide new insights into the underlying mechanisms of spatial assemblage of grassland communities, and emphasize the critical role of spatial structure in predicting the impacts of environmental change.</span></p>
FIGURES 9 in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment
FIGURES 9–. Cocconeis pseudodiruptoides Foged. SEM (New Caledonia, Melanesia). SV hemi-fascia (external view 9, arrow) and slightly sigmoid sternum (9 and 11), complex loculate SV areolae (external views 10 and 11, arrow; internal view 12, arrowhead), RV with a strongly curved raphe ending (external view 14, arrowhead), RV areolae marginal short slits (external view 13, arrowhead), RV apex (external view 15). Scale bars = 3 µm (9, 11, 14), 2 µm (12), 1 µm (15), 500 nm (10), 300 nm (13).
FIGURES –. Rare taxa (SEM, New Caledonia, Melanesia). Cocconeis sp. 2 in Riaux-Gobin et al. 2015 (31, 32), short marginal SV striae between each short raised virgae (31, arrow; 32, arrowhead), SV narrow sternum, siliceous pearls (31), C. sp. 4 in Riaux-Gobin et al. 2015 (33–34), strong marginal crista marginalis, short marginal striae on top of each short raised virga (33, arrow; 34, arrowhead),?C. sp. 5 in Riaux-Gobin et al. 2015 (35–36), short SV striae and a raised axial structure (35, arrow). Scale bars = 3 µm (31), 2 µm (33, 35), 1 µm (32, 36), 500 nm (34). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment
FIGURES –. Rare taxa (SEM, New Caledonia, Melanesia). Cocconeis sp. 2 in Riaux-Gobin et al. 2015 (31, 32), short marginal SV striae between each short raised virgae (31, arrow; 32, arrowhead), SV narrow sternum, siliceous pearls (31), C. sp. 4 in Riaux-Gobin et al. 2015 (33–34), strong marginal crista marginalis, short marginal striae on top of each short raised virga (33, arrow; 34, arrowhead),?C. sp. 5 in Riaux-Gobin et al. 2015 (35–36), short SV striae and a raised axial structure (35, arrow). Scale bars = 3 µm (31), 2 µm (33, 35), 1 µm (32, 36), 500 nm (34).
FIGURES –8. Cocconeis coronatoides Riaux-Gobin & Romero forma 1. SEM (New Caledonia, Melanesia). SVVC partially attached (2, arrowhead), SV areolae domed hymenes with radial slits arranged by sectors (external view 3, arrowhead), marginal RV hyaline area (external view 4, arrowhead), uniseriate striae up to margin (4), open RVVC (5, ellipse), RVVC with irregularly spread fimbriae (6, arrowhead), SVVC still attached, small marginal chambers (internal view 7, arrowhead), SV margin (external view 8). Scale bars = 3 µm (8), 2 µm (2, 4, 7), 1 µm (6), 700 nm (5), 200 nm (3). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment
FIGURES –8. Cocconeis coronatoides Riaux-Gobin & Romero forma 1. SEM (New Caledonia, Melanesia). SVVC partially attached (2, arrowhead), SV areolae domed hymenes with radial slits arranged by sectors (external view 3, arrowhead), marginal RV hyaline area (external view 4, arrowhead), uniseriate striae up to margin (4), open RVVC (5, ellipse), RVVC with irregularly spread fimbriae (6, arrowhead), SVVC still attached, small marginal chambers (internal view 7, arrowhead), SV margin (external view 8). Scale bars = 3 µm (8), 2 µm (2, 4, 7), 1 µm (6), 700 nm (5), 200 nm (3).
FIGURES – 0. Cocconeis cf. delapunctata Hohn. SEM (New Caledonia, Melanesia). SV with axial void areas (external views 27–29, arrowheads), possible RV with areas devoid of areolae (30, arrowheads). Scale bars = 2 µm (27–30). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment
FIGURES – 0. Cocconeis cf. delapunctata Hohn. SEM (New Caledonia, Melanesia). SV with axial void areas (external views 27–29, arrowheads), possible RV with areas devoid of areolae (30, arrowheads). Scale bars = 2 µm (27–30).
FIGURE. Sampling sites in Province Sud (New Caledonia) and major mining Ni sites (* i.e.: Thio, Goro, La Tontouta), and major industrial Ni site (circle: Doniambo). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment
FIGURE. Sampling sites in Province Sud (New Caledonia) and major mining Ni sites (* i.e.: Thio, Goro, La Tontouta), and major industrial Ni site (circle: Doniambo).
FIGURES – 0. Cocconeis sp. (cf. capensis (Cholnoky) Witkowski). SEM (New Caledonia, Melanesia). External views. Biseriate SV striae (16, 18, twin arrows), narrow and straight SV sternum, marginal large area with one row of beads (16–18), SV marginal area with tiny pores (17), SV crater-like areolae with oblong in a zigzag lumen (19), SV areolae with sort of expansions (20). Scale bars: 4 µm (16), 3 µm (18), 700 nm (17), 400 nm (19–20). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment
FIGURES – 0. Cocconeis sp. (cf. capensis (Cholnoky) Witkowski). SEM (New Caledonia, Melanesia). External views. Biseriate SV striae (16, 18, twin arrows), narrow and straight SV sternum, marginal large area with one row of beads (16–18), SV marginal area with tiny pores (17), SV crater-like areolae with oblong in a zigzag lumen (19), SV areolae with sort of expansions (20). Scale bars: 4 µm (16), 3 µm (18), 700 nm (17), 400 nm (19–20).
FIGURES –. Cocconeis sp. (cf. C. bilicis F.Meister). SEM (New Caledonia, Melanesia). Different specimens with SV sectors separated (or not) by a crista marginalis (21, 24), SV striae uniseriae near the sternum and biseriate thereafter (21, 24), SV areolae lumen with circular ornamentation (23, arrow), crista marginalis (22), SVVC in advalvar view with digit fimbriae (25, arrowhead), large RV axial concave area (26). Scale bars = 6 µm (24), 5 µm (26), 4 µm (21), 3 µm (25), 1 µm (22–23). in Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment
FIGURES –. Cocconeis sp. (cf. C. bilicis F.Meister). SEM (New Caledonia, Melanesia). Different specimens with SV sectors separated (or not) by a crista marginalis (21, 24), SV striae uniseriae near the sternum and biseriate thereafter (21, 24), SV areolae lumen with circular ornamentation (23, arrow), crista marginalis (22), SVVC in advalvar view with digit fimbriae (25, arrowhead), large RV axial concave area (26). Scale bars = 6 µm (24), 5 µm (26), 4 µm (21), 3 µm (25), 1 µm (22–23).
Distribution of ant assemblage, microclimate and microhabitat along vertical gradients
<p><span>Abiotic and biotic factors structure species assembly in ecosystems both horizontally and vertically. However, the way community composition changes along comparable horizontal and vertical distances in complex three-dimensional habitats, and the factors driving these patterns, remains poorly understood. By sampling ant assemblages at comparable vertical and horizontal spatial scales in a tropical rain forest, we tested hypotheses that predicted differences in vertical and horizontal turnover explained by different drivers in vertical and horizontal space. These drivers included environmental filtering, such as microclimate (temperature, humidity, and photosynthetic photon flux density) and microhabitat connectivity (leaf area) which are structured differently across vertical and horizontal space. We found that both ant abundance and richness decreased significantly with increasing vertical height. Although dissimilarity between ant assemblages increased with vertical distance, indicating a clear distance-decay pattern, the dissimilarity was higher horizontally where it appeared independent of distance. The pronounced horizontal and vertical structuring of ant assemblages across short distances is likely explained by a combination of microclimate and microhabitat connectivity. Our results demonstrate the importance of considering three-dimensional spatial variation in local assemblages and reveal how highly diverse communities can be supported by complex habitats.</span></p>
Data for: European mushroom assemblages are phylogenetically structured by temperature
<p><span>Recent global warming affects species compositions at an unprecedented rate. To predict climate-induced changes in species assemblages, a better understanding of the link between species occurrence and climate is needed. Macrofungal fruit body assemblages are correlated with the thermal environment at the European scale. However, it is still unknown whether macrofungal communities are also phylogenetically structured by thermal environments. Thermal environments are characterized by annual temperature means but also by intra-annual temperature variability (hereafter termed temperature seasonality), which are both considered in this study. Here, we used distribution data of </span><span>2,882 </span><span>species based on fruit body records across Europe to address two main questions: (i) Are mushroom assemblages at the extremes of the mean (warm and cold) and seasonal (high intra-annual variability, i.e. continental) climate gradient phylogenetically more similar than expected (phylogenetic alpha diversity); (ii) are mushroom assemblages, that are subject to different mean and seasonal temperature conditions, composed of different lineages (phylogenetic beta diversity). Our phylogenetic alpha diversity analysis shows that mushroom assemblages are phylogenetically structured by warm and cold environments, indicating that phylogenetically related species with similar traits thrive under more extreme conditions. In contrast, assemblages are phylogenetically more dissimilar (overdispersed) in temperature seasonal environments, indicating limiting similarity. Phylogenetic beta diversity was significantly correlated with mean and seasonal temperature differences, a response mainly driven by a few genera. Our results show that macrofungal assemblages are phylogenetically structured by temperature across Europe, suggesting phylogenetically constrained specialization towards temperature extremes. Predicted anthropogenic warming is likely to affect species composition and phylogenetic diversity with additional consequences for the carbon- and nutrient cycles.</span></p>
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.