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.
5,864
datasets available to search
ShareScore release 0.9.0
Dataset results
5,864 results for “species diversity”
FIGURE 18 in Three new species of agathotanaids (Tanaidacea: Paratanaoidea: Tanaidomorpha) from the lower bathyal zone off southwestern Java, Indonesia, Indian Ocean with notes on the global distribution and diversity of Agathotanaidae
FIGURE 18. Dendrogram of similarity (Bray Curtis, average linkage clustering method) in the distribution of Agathotanaidae.
FIGURE 21 in Three new species of agathotanaids (Tanaidacea: Paratanaoidea: Tanaidomorpha) from the lower bathyal zone off southwestern Java, Indonesia, Indian Ocean with notes on the global distribution and diversity of Agathotanaidae
FIGURE 21. The number of marine benthic biogeographical provinces that each Agathotanaidae species was recorded.
Genomic time-series data show that gene flow maintains high genetic diversity despite substantial genetic drift in a butterfly species
<p>Effective population size affects the efficacy of selection, rate of evolution by drift, and neutral diversity levels. When species are subdivided into multiple populations connected by gene flow, evolutionary processes can depend on global or local effective population sizes. Theory predicts that high levels of diversity might be maintained by gene flow, even very low levels of gene flow, consistent with species long-term effective population size, but tests of this idea are mostly lacking. Here, we show that Lycaeides butterfly populations maintain low contemporary (variance) effective population sizes (e.g., ~200 individuals) and thus evolve rapidly by genetic drift. In contrast, populations harbored high levels of genetic diversity consistent with an effective population size several orders of magnitude larger. We hypothesized that the differences in the magnitude and variability of contemporary versus long-term effective population sizes were caused by gene flow of sufficient magnitude to maintain diversity but only subtly affect evolution on generational time scales. Consistent with this hypothesis, we detected low but non-trivial gene flow among populations. Furthermore, using short-term population-genomic time-series data, we documented patterns consistent with predictions from this hypothesis, including a weak but detectable excess of evolutionary change in the direction of the mean (migrant gene pool) allele frequencies across populations, and consistency in the direction of allele frequency change over time. The documented decoupling of diversity levels and short-term change by drift in Lycaeides has implications for our understanding of contemporary evolution and the maintenance of genetic variation in the wild.</p>
Cannot see the diversity for all the species: evaluating inclusion criteria for local species lists when using abundant citizen science data
Abundant citizen science data on species occurrences is becoming increasingly available and enables identifying composition of communities occurring at multiple sites with high temporal resolution. However, for species displaying temporary patterns of local occurrences, i.e. that are transient to some sites, biodiversity measures are clearly dependent on the criteria used to include species into local species lists. Using abundant opportunistic citizen science data from frequently visited wetlands we investigated the sensitivity of α- and β-diversity estimates to the use raw vs. detection-corrected data and to the use of inclusion criteria for species presence reflecting alternative site use. We tested 7 inclusion criteria (with varying number of days required to be present) on time series of daily occurrence status during a breeding season of 90 days for 77 wetland bird species. We show that even when opportunistic presence-only observation data is abundant, raw data may not produce reliable local species richness estimates and rank sites very differently in terms of species richness. Furthermore, occupancy model based - and - diversity estimates were sensitive to the inclusion criteria used. Total species lists (all species observed at least once during a season) may therefore mask diversity differences among sites in local communities of species, by e.g. including vagrant species on potentially breeding communities and change the relative rank order of sites in terms of species richness. Very high sampling effort does not necessarily free opportunistic data from its inherent bias and can produce a pattern in which many species are observed at least once almost everywhere, thus leading to a possible paradox: the large amount of biological information may hinder its usefulness. Therefore, when prioritizing among sites to manage or preserve species diversity estimates need to be carefully related to relevant inclusion criteria depending on the diversity estimate in focus.
Figure 3 in Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
Figure 3. Map of New Guinea sampling localities for Stegonotus (a) and mtDNA + nucDNA maximum likelihood gene tree (b). Symbols for species/clades match those on the map; * indicates bootstrap values ≥ 70. For some localities, symbols were adjusted for better visibility and so localities are approximate; see Appendix 1. for exact locality information.
Figure 2 in Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
Figure 2. Photographs of Stegonotus species with dorsal, ventral and lateral head views from left to right: (a) Stegonotus batjanensis USNM 237129, (b) Stegonotus borneensis FMNH 251054, (c) Stegonotus muelleri LSUMZ 41802, (d) Stegonotus florensis WAM 104606, (e) Stegonotus guentheri AM 129712, (f) Stegonotus heterurus BPBM 22556, (g) Stegonotus cucullatus LSUMZ 94371. Photos from SR. (h) Stegonotus modestus LSUMZ 92339, (i) Stegonotus iridis sp. nov. SJR 7514, (j) Stegonotus diehli LSUMZ 92344 (k) Stegonotus melanolabiatus sp. nov. AMS R115361 (l) Stegonotus derooijae sp. nov. SAMA R70467 (m) Stegonotus admiraltiensis sp. nov. LSUMZ 93597, (n) Stegonotus parvus LSUMZ 92333. Photos from Sara Ruane and Stephen J. Richards.
Figure 6 in Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
Figure 6. Photographs of paratype Stegonotus derooijae sp. nov. MZB.Ophi.3293 showing (clockwise from top left) dorsal of body, ventral of body, dorsal of head, lateral of head. Photos from Stephen J. Richards.
Figure 4 in Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
Figure 4. Photographs of three Stegonotus species described here in life; (a) Stegonotus iridis sp. nov. SAMA R70466 (b) Stegonotus derooijae sp. nov. MZB.Ophi.3288 (c) Stegonotus admiraltiensis sp. nov. from Manus Island, unregistered. Photos from Stephen J. Richards.
Figure 8 in Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
Figure 8. Photographs of holotype Stegonotus admiraltiensis sp. nov. LSUMZ 93598 showing (clockwise from top left) dorsal of body, ventral of body, dorsal of head, lateral of head. Photos from Sara Ruane.
Figure 5 in Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
Figure 5. Photographs of holotype Stegonotus iridis sp. nov. MZB.Ophi.3306 showing (clockwise from top left) dorsal of body, ventral of body, dorsal of head, lateral of head. Photos from Stephen J. Richards.
Figure 7 in Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
Figure 7. Photographs of holotype Stegonotus melanolabiatus sp. nov. AMS 115343 showing (clockwise from top left) dorsal of body, ventral of body, dorsal of head, lateral of head. Photos from Sara Ruane.
Figure 1 in Cryptic and non-cryptic diversity in New Guinea ground snakes of the genus Stegonotus Duméril, Bibron and Duméril, 1854: a description of four new species (Squamata: Colubridae)
Figure 1. Photographs of six New Guinea Stegonotus species in life including voucher numbers: (a) Stegonotus cucullatus LSUMZ 94371, (b) Stegonotus diehli LSUMZ 92345, (c) Stegonotus modestus LSUMZ 92327, (d) Stegonotus heterurus BPBM 22556, (e) Stegonotus parvus LSUMZ 92335, (f) Stegonotus guentheri LSUMZ 94386. Photos from Christopher C. Austin (a, b, c, e, f) and F. Kraus (d).
Figure 3 in Description of a new species of Haminoea (Gastropoda: Cephalaspidea) from India, with an account of the diversity of the genus in the Indo-West Pacific
Figure 3. Male reproductive system of Haminoea aptei sp. nov. (a) System with upper fundus on its rounded form (BNHS opistho 1344). (b) System with upper fundus on its stretched form (BNHS opistho 1343). (c) Detail of interior of fundus (BNHS opistho 1343). Abbreviations: smg, seminal groove; ga, genital aperture; at, atrium; as, atrium sheet; lfu, lower fundus; ufu, upper fundus; sd, seminal duct; pr, prostate; rm, retractor muscle. Scale bars: a, b = 1 mm; c = 0.5 mm.
Figure 2 in Description of a new species of Haminoea (Gastropoda: Cephalaspidea) from India, with an account of the diversity of the genus in the Indo-West Pacific
Figure 2. Haminoea aptei sp. nov. (a) Apertural view (left image) and dorsal view (right image) (BNHS opistho 1361, H = 13 mm). (b) Apertural view (left image) and dorsal view (right image) (BNHS opistho 1343, H = 7.5 mm). (c) Apertural view (left image) and dorsal view (right image) (BNHS opistho 1344, H = 6 mm). (d) SEM, detail of jaw plate (BNHS opistho 1344). (e) SEM, detail of radula with central rachidian (BNHS opistho 1344). (f) SEM, surface of whole gizzard plate (BNHS opistho 1344). (g) SEM, detail of rachis and ridges (BNHS opistho 1344). (h) SEM, detail of ridge (BNHS opistho 1344). Scale bars: d, e, g = 20 µm; f = 100 µm; h = 5 µm.
Figure 1 in Description of a new species of Haminoea (Gastropoda: Cephalaspidea) from India, with an account of the diversity of the genus in the Indo-West Pacific
Figure 1. Live specimens of Haminoea aptei sp. nov. (a) Andaman Islands (BNHS opistho 1344); animal length: 18.2 mm. (b) Minicoy Island, Lakshadweep Islands (BNHS opistho 1361); animal length: 23.0 mm.
Figure 14 in Diversity and biogeography of the little known deep-sea barnacles of the genus Waikalasma Buckeridge, 1983 (Balanomorpha: Chionelasmatoidea) in the Southwest Pacific, with description of a new species
Figure 14. Waikalasma dianajonesae sp. nov. (a) Mandible. (b) Outer margin of mandible. (c) Lower margin. (d) Inferior angle. (e) Mandibular palp. (f) Serrulate setae on palp. (g) Labrum. (h) Cutting edge of labrum, showing small teeth. Scale bars in μm.
Figure 15 in Diversity and biogeography of the little known deep-sea barnacles of the genus Waikalasma Buckeridge, 1983 (Balanomorpha: Chionelasmatoidea) in the Southwest Pacific, with description of a new species
Figure 15. The best scoring maximum-likelihood (ML) tree based on concatenated COI and 12S data sets. Node labels are supporting values (%) estimated from the NJ, ML and MP methods, respectively. Scale bars indicate the number of expected substitutions per site.
Figure 10 in Diversity and biogeography of the little known deep-sea barnacles of the genus Waikalasma Buckeridge, 1983 (Balanomorpha: Chionelasmatoidea) in the Southwest Pacific, with description of a new species
Figure 10. Waikalasma dianajonesae sp. nov. (a) Cirrus I. (b) Magnified view of posterior ramus. (c) Serrulate setae on anterior ramus. (d) Magnified view of serrulate setae. (e) Cirrus II. (f) Intermediate segment of posterior cirrus. (g) Intermediate segments of anterior ramus. (h) Serrulate setae on basipod. Scale bars in μm.
Figure 9 in Diversity and biogeography of the little known deep-sea barnacles of the genus Waikalasma Buckeridge, 1983 (Balanomorpha: Chionelasmatoidea) in the Southwest Pacific, with description of a new species
Figure 9. Waikalasma dianajonesae sp. nov. External view of whole shell. (a) Top view. (b) Rostral side view. (c) Carinal view. (d) Right side view. (e) Left side view. (f) External view of scutum. (g) Internal view of scutum. (h) External view of tergum. (i) Internal view of tergum.
Figure 5 in Diversity and biogeography of the little known deep-sea barnacles of the genus Waikalasma Buckeridge, 1983 (Balanomorpha: Chionelasmatoidea) in the Southwest Pacific, with description of a new species
Figure 5. Waikalasma boucheti. (a) Cirrus V. (b) Intermediate segments of posterior ramus. (c) Intermediate segments of anterior ramus. (d) Cirrus VI. (e) Intermediate segment of posterior ramus. (f) Intermediate segments of anterior ramus. (g) Penis. (h) Tip of penis. Scale bars in μm.
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.