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.
1,283
datasets available to search
ShareScore release 0.7.1
Dataset results
1,283 results for “Intertidal”
Environmental DNA metabarcoding differentiates between micro-habitats within the rocky intertidal
<p>While the utility of environmental DNA (eDNA) metabarcoding surveys for biodiversity monitoring continues to be demonstrated, the spatial and temporal variability of eDNA, and thus the limits of the differentiability of an eDNA signal, remains under-characterized. In this study, we collected eDNA samples from distinct micro-habitats (~40 m apart) in a rocky intertidal ecosystem over their exposure period in a tidal cycle. During this period, the micro-habitats transitioned from being interconnected, to physically isolated, to interconnected again. Using a well-established eukaryotic (cytochrome oxidase subunit I) metabarcoding assay, we detected 415 species across 28 phyla. Across a variety of univariate and multivariate analyses, using exclusively taxonomically assigned data as well as all detected amplicon sequence variants (ASVs), we identified unique eDNA signals from the different micro-habitats sampled. This difference paralleled expected ecological gradients and increased as the sites became more physically disconnected. Our results demonstrate that eDNA biomonitoring can differentiate micro-habitats in the rocky intertidal only 40 m apart, that these differences reflect known ecology in the area, and that physical connectivity informs the degree of differentiation possible. These findings showcase the potential power of eDNA biomonitoring to increase the spatial and temporal resolution of marine biodiversity data, aiding research, conservation, and management efforts.</p>
Figure 6 in Sphaeromopsis jayaraji sp. nov. (Crustacea: Isopoda), a new species of intertidal Sphaeromatidae from the Andaman Islands, northern Indian Ocean
Figure 6. Sphaeromopsis jayaraji sp. nov., holotype male (2.9 mm) (PUMB 35104). A, pleopod 1; B, pleopod 2; C, pleopod 3; D, pleopod 4; E, pleopod 5.
Figure 5 in Sphaeromopsis jayaraji sp. nov. (Crustacea: Isopoda), a new species of intertidal Sphaeromatidae from the Andaman Islands, northern Indian Ocean
Figure 5. Sphaeromopsis jayaraji sp. nov., holotype male (2.9 mm) (PUMB 35104). A, pereopod 1; B, pereopod 2; C, pereopod 4; D, pereopod 6; E, pereopod 7.
Figure 2 in Sphaeromopsis jayaraji sp. nov. (Crustacea: Isopoda), a new species of intertidal Sphaeromatidae from the Andaman Islands, northern Indian Ocean
Figure 2.Sphaeromopsis jayaraji sp. nov., holotype male (2.9 mm) (PUMB 35104). A, dorsal view; B, lateral view; C, frontal lamina; D, pleotelson; E, uropods.
Figure 3 in Sphaeromopsis jayaraji sp. nov. (Crustacea: Isopoda), a new species of intertidal Sphaeromatidae from the Andaman Islands, northern Indian Ocean
Figure 3. Sphaeromopsis jayaraji sp. nov., holotype male (2.9 mm) (PUMB 35104). A, ventral view of pleotelson; B, antennula; C, antenna; D, penes.
Figure 4 in Sphaeromopsis jayaraji sp. nov. (Crustacea: Isopoda), a new species of intertidal Sphaeromatidae from the Andaman Islands, northern Indian Ocean
Figure 4. Sphaeromopsis jayaraji sp. nov., holotype male (2.9 mm) (PUMB 35104). A, maxilliped; B, mandible; C, mandible palp; D, maxillula; E, maxilla.
Fig. 12. Microporella umbonata Hincks, 1883 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 12. Microporella umbonata Hincks, 1883, (NHMUK 1921.11.17.15), Departure Bay, Vancouver, Canada. A. Group of zooids, some with ovicells. B. Distal end of zooid, showing ovicell and avicularium. C. Close-up showing C-shaped ascopore with projecting tongue and denticulate margin, and concave proximal margin of orifice with triangular condyles. Scale bars: A = 400 µm; B = 100 µm; C = 40 µm.
Fig. 11 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 11. Microporella umboniformis Soule, Soule & Chaney, 1995, holotype (SBMNH 671678) (previously AHF 213), Velero BS 1064, off Santa Barbara Island (33°30′1.00008″ N, 119°2′20.00004″ W), depth 49 m, California, USA. A. Group of zooids showing single or paired adventitious avicularia and five to six oral spines. Note the consistent absence of umbones lateral to orifice. B. Close-up of a zooid at colony margin showing six robust spines, paired avicularia and a short, pointed umbo proximal to ascopore. C. Close-up of orifice showing two small condyles at some distance from corners and proximal margin slightly concave between condyles as in M. umbonata. D. Close-up of C-shaped ascopore with denticulations. E. Group of zooids with some at the bottom showing larger pseudopores, likely due to the absence of the external layer of calcification, and some others with extensive secondary calcification. F. Close-up of one of the zooids in (E) showing larger pseudopores likely due to the lack of external frontal calcification. G–H. Close-ups of the same ovicell in frontal and lateral view, respectively. Note that the two proximalmost spines are retained. Scale bars: A = 500 µm; B–C = 200 µm; D = 50 µm; E = 1 mm; F–H = 250 µm.
Fig. 9. Microporella setiformis O in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 9. Microporella setiformis O'Donoghue & O'Donoghue, 1923 (SBMNH 704776), Black Sand Beach, Lost Coast, California, USA. A. Group of zooids, some ovicellate. B. Autozooids and kenozooids (white asterisks) at colony growing edge. C. Close-up of orifice, showing low condyles, ascopore, and avicularia with crossbar missing. D. Close-up of ovicellate zooids with avicularia showing complete crossbar. E. Close-up of marginal zooid showing exposed pore chamber windows. F. Group of autozooids with two oral spines, some indicated with arrows. Scale bars: A = 1 mm; B = 500 µm; C = 50 µm; D, F = 250 µm; E = 150 µm.
Fig. 8 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 8. Microporella neocribroides Dick & Ross, 1988 (SBMNH 704692), Stengel Beach, California, USA. A. Group of autozooids lacking avicularia and showing two distolateral oral spines. B. Group of zooids lacking avicularia, with ovicells in various stages of development. C. Group of zooids, mostly ovicellate, and some with avicularia. D. Group of zooids, some in formation, at colony growing edge. E. Close-up of the orifice and reticulate ascopore. Scale bars: A–D = 500 µm; E = 50 µm.
Fig. 5. Microporella cribrosa Osburn, 1952 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 5. Microporella cribrosa Osburn, 1952, holotype (SBMNH 668403) (previously AHF 80), Corona del Mar (36°31′59.998169″ N, 121°56′59.989014″ W), Newport Harbor, Orange County, California, USA. A. Group of ovicellate zooids with two oral spines visible and paired avicularia with setiform mandibles. B. Group of zooids, most ovicellate, with umbones hiding the ascopore; one zooid showing five robust oral spines. C. Close-up of frontal shield and ovicells showing the simple (i.e., nonreticulate) pseudopores. D–E. Close-ups of ascopore showing well-developed distal projections and radial denticulations converging towards the centre giving to the lunate aperture a reticulate appearance. F. Tatiform ancestrula, seemingly regenerated as a kenozooid with adventitious avicularium, and early astogeny with zooids showing up to 7 oral spines. Scale bars: A–B, F = 500 µm; C = 200 µm; D = 100 µm; E = 50 µm.
Fig. 6 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 6. Microporella similis Chowdhury & Di Martino sp. nov. A–C. Holotype (SBMNH 704271), Velero 1232–41, 5 miles from San Pedro Breakwater, California, USA. D. Paratype (SBMNH 702583), Laguna Beach, California, USA. E–G. Paratype (SBMNH 703675), Santa Catalina Island, California, USA. H–L. Paratype (SBMNH 668408), Bahia Todos Santos, Mexico. A. Group of autozooids, some ovicellate. B. Close-up of ascopore. C. Ancestrula and periancestrular zooids. D. Close-up of autozooids showing the orifice. E. Autozooids with multiple umbones on the frontal shield. F. Close-up of multiporous septula. G. Close-up of a young autozooid at colony growing edge showing the length of oral spines. H. Close-up of an open mandible. I. Ovicellate zooids with quadrangular umbo. J. Group of zooids, one showing a third avicularium (see arrow). K. Close-up of ascopore. L. Close-up of reticulate pseudopores. Scale bars: A = 1 mm; B = 100 µm; C, I = 500 µm; D = 250 µm; E, G = 200 µm; F = 50 µm; H = 120 µm; J = 300 µm; K–L = 20 µm.
Fig. 4 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 4. Microporella rota Chowdhury & Di Martino sp. nov., all California, USA. A, D, F. Paratype (SBMNH 704769), Pillar Point. B–C. Holotype (SBMNH 704766), Shelter Cove. E, G. Paratype (SBMNH 704767), Mill Creek. H. Paratype (SBMNH 706126), Marshall Gulch. A. Group of autozooids with umbonate frontal shield. B. Group of ovicellate zooids. C. Close-up of the ascopore, reticulate pseudopores (see also insert), and orifice. D. Partially overgrown tatiform ancestrula and first budded autozooid lacking an avicularium. E. Close-up of multiporous septula. F. Aberrant zooids, lacking an orifice but with avicularium and ascopore (seemingly triple in the aberrant zooid at the bottom), formed at the edge of encounter between two colonies. G. Autozooid with two avicularia on the same side. H. Autozooids having avicularia with preserved mandibles. Scale bars: A–B, F, H = 500 µm; C = 200 µm; D = 150 µm; E = 50 µm; G = 250 µm.
Fig. 2 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 2. Microporella dentata Chowdhury & Di Martino sp. nov., holotype (SBMNH 704789), MacKerricher State Park, California, USA. A. General view of colony. B. Group of autozooids, each with four oral spines and avicularia. The insert shows an avicularium with open mandible. C. Closeup of orifice with serrated hinge-line and ascopore. D. Ovicellate zooids with incomplete, developing ovicells. E. Paratype (SBMNH 704790a), Greenwood, California, USA. Ovicellate zooids with complete ovicells. Scale bars: A = 1 mm; B = 200 µm; C = 50 µm; D = 150 µm; E = 250 µm.
Fig. 3 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 3. Microporella pauciperforata Chowdhury & Di Martino sp. nov., holotype (SBMNH 704788), Trinidad Head North, California, USA. A. General view of the colony showing majority of zooids lacking avicularia (some marked with asterisks), zooid with proximolateral avicularium (arrow), and an ovicellate zooid (star). B. Group of autozooids with abraded frontal shields either lacking avicularia, or with small, lateral avicularium distally directed or placed in the proximolateral corner and directed proximally. C. Close-up of the ovicellate zooid showing a preserved reticulate ascopore. D. Close-up of reticulate ascopore. E. Close-up of an avicularium. F. Close-up of zooids with evident spine bases (white arrows). Scale bars: A = 1 mm; B = 500 µm; C, F = 200 µm; D = 60 µm; E = 100 µm.
Fig. 1. A in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 1. A. Location of sampling sites along the Californian coastline. B. Distributions and relative abundances of species indicated by colour-coded bars. C–D. Two sites as examples of the rocky intertidal boulder fields that were sampled for this study. C. Palmer's Point. D. Marshall Gulch.
Fig. 7 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 7. Microporella californica (Busk, 1856) (SBMNH 704770), Point Saint George, California, USA. A. Group of zooids, most ovicellate. B. Close-up of autozooids with paired avicularia, one zooid ovicellate. C. Ovicellate zooids with acute frontal shield umbones hiding the ascopore.D. Autozooids with oral spines intact. E. Close-up of an orifice, with oral spine bases obliterated by secondary calcification, and avicularia. F. Close-up of the ascopore and orifice with condyles. G. Incomplete autozooids showing distal pore chamber windows. Scale bars: A–C, G = 500 µm; D = 200 µm; E = 100 µm; F = 50 µm.
Fig. 10 in Diversity and distribution of intertidal Microporella (Bryozoa: Cheilostomatida) from California
Fig. 10. Microporella umbonata (Hincks, 1883) (NHMO H1940), Palmer's Point, Trinidad, California, USA. A. Group of ovicellate and non-ovicellate zooids, one zooid with avicularium. B. Distal part of autozooid showing umbonate ovicell, small adventitious avicularium, C-shaped ascopore with projecting tongue and denticulate margin, and concave proximal margin of orifice with triangular condyles. Scale bars: A = 500 µm; B = 200 µm.
Stability of rocky intertidal communities in response to species removal varies across spatial scales
<p>Improving our understanding of stability across spatial scales is crucial in the current scenario of biodiversity loss. Still, most empirical studies of stability target small scales. Here we experimentally removed the local space-dominant species (macroalgae, barnacles, or mussels) at eight sites spanning more than 1000 km of coastline in north- and south-central Chile, and quantified the relationship between area (the number of aggregated sites) and stability in aggregate community variables (total cover) and taxonomic composition. Resistance, recovery, and invariability increased nonlinearly with area in both functional and compositional domains. Yet, the functioning of larger areas achieved a better, albeit still incomplete, recovery than composition. Compared with controls, smaller disturbed areas tended to overcompensate in terms of total cover. These effects were related to enhanced available space for recruitment (resulting from the removal of the dominant species), and to increasing beta diversity and decaying community-level spatial synchrony (resulting from increasing area). This study provides experimental evidence for the pivotal role of spatial scale in the ability of ecosystems to resist and recover from chronic disturbances. This knowledge can inform further ecosystem restoration and conservation policies.</p>
Fig. 2 in Niche Sharing In Intertidal Mollusks And Decapods In Rocky Shore Of Easter Island
Fig. 2. Probabilistic distribution model for Planes minutus (Linnaeus, 1758) and Leptograpsus variegatus (Fabricius, 1793), Nerita morio (G. B. Sowerby I., 1833) and Nodilittorina pyramidalis pascua Rosewater, 1970 for the studied site, Tahai beach on Easter Island, a rocky shore, sampled in June 2010.
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.