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.
836
datasets available to search
ShareScore release 0.9.0
Dataset results
836 results for “species limits”
FIGURE 14 in The Akodon boliviensis species group (Rodentia: Cricetidae: Sigmodontinae) in Argentina: species limits and distribution, with the description of a new entity
FIGURE 14. Type locality and additional localities of Akodon polopi, new species (Province of Córdoba, Argentina).
FIGURE 2 in The Akodon boliviensis species group (Rodentia: Cricetidae: Sigmodontinae) in Argentina: species limits and distribution, with the description of a new entity
FIGURE 2. Individual specimen scores based on log-transformed values of 11 cranial measurements, projected onto the first and second principal components extracted from analysis of adult specimens (age class 3 and 4, n = 199) of 5 species of the genus Akodon: A. boliviensis, A. caenosus, Akodon n. sp., A. spegazzinii and A. sylvanus. Results of principal components analysis in table 3.
FIGURE 5 in The Akodon boliviensis species group (Rodentia: Cricetidae: Sigmodontinae) in Argentina: species limits and distribution, with the description of a new entity
FIGURE 5. Dorsal, ventral, and lateral views of skulls in A. caenosus (JPJ 579; A, E and I), Akodon boliviensis (JPJ 1334; B, F and J), A. spegazzinii (JPJ 857; C, G and K) and A. sylvanus (JPJ 594; D, H and L). All specimens of age class 4. Scale bar = 10 mm.
FIGURE 10 in The Akodon boliviensis species group (Rodentia: Cricetidae: Sigmodontinae) in Argentina: species limits and distribution, with the description of a new entity
FIGURE 10. Habitats of the type localities of the four nominal forms associated with A. spegazzinii: A) High altitudinal grasslands at 2400 m, near Otro Cerro, type locality of A. alterus Thomas. B) Puna environments in Laguna Blanca, 3200 m, type locality of A. leucolimnaeus Cabrera. C) Monte environments near Cachi, 2500 m, type locality of A. spegazzinii Thomas. D) Rain forest at Horco Molle, about 700 m, near the type locality of A. tucumanensis J. A. Allen.
FIGURE 12 in The Akodon boliviensis species group (Rodentia: Cricetidae: Sigmodontinae) in Argentina: species limits and distribution, with the description of a new entity
FIGURE 12. Akodon polopi, new species (holotype MACN 23486): dorsal (upper left), ventral (upper right) and lateral (middle) views of skull and labial view (bottom) of mandible. Scale bar = 10 mm.
FIGURE 9 in The Akodon boliviensis species group (Rodentia: Cricetidae: Sigmodontinae) in Argentina: species limits and distribution, with the description of a new entity
FIGURE 9. Recorded localities of A. spegazzinii in northwestern Argentina. Localities and geographic position in Appendix II.
FIGURE 2 in A new species of Otothyropsis (Siluriformes: Loricariidae) from the upper Río Paraná basin, Paraguay, with a discussion of the limits between Otothyropsis and Hisonotus
FIGURE 2. Abdominal plate series of Otothyropsis dialeukos, MCP 49901, 34.0 mm SL. LAP, lateral abdominal plate series; MAP, median abdominal plate series; PAP, preanal abdominal plate series. Scale bar = 2 mm.
FIGURE 6 in A new species of Otothyropsis (Siluriformes: Loricariidae) from the upper Río Paraná basin, Paraguay, with a discussion of the limits between Otothyropsis and Hisonotus
FIGURE 6. Position of truncation of mid-dorsal series of lateral plates of Otothyropsis and Hisonotus species in lateral view: (A) Otothyropsis biamnicus, MCP 37164, paratype; (B) O. polyodon, paratype, MCP 45756; (C) O. marapoama, MCP 38303, paratype; (D) O. piribebuy, MCP 44394, paratype; (E) H. francirochai, MCP 34630; (F) O. alicula, MCP 23957, paratype; (G) H. megaloplax, MCP 31779, paratype; (H) Hisonotus vireo, MCP 14619, paratype; (I) H. laevior, MCP 23854; (J) H. heterogaster, MCP 41073, paratype; (K) H. iota, MCP 40029, paratype; (L) H. leucophrys, MCP 41354, paratype. D, dorsal series of lateral plates; MD, mid-dorsal series of lateral plates; M, median series of lateral plates; MV, mid-ventral series of lateral plates; V, ventral series of lateral plates. Odontodes not shown. Scale bar = 5 mm.
FIGURE 1 in A new species of Otothyropsis (Siluriformes: Loricariidae) from the upper Río Paraná basin, Paraguay, with a discussion of the limits between Otothyropsis and Hisonotus
FIGURE 1. Otothyropsis dialeukos, holotype, MNHNP 3880, female, 34.6 mm SL, Paraguay, Alto Paraná, Hernandarias, Itá creek at Paso Itá, Rio Paraná basin.
FIGURE 5 in A new species of Otothyropsis (Siluriformes: Loricariidae) from the upper Río Paraná basin, Paraguay, with a discussion of the limits between Otothyropsis and Hisonotus
FIGURE 5. Boxplot of caudal-peduncle depth as percent of standard length of species currently assigned to Otothyropsis and Hisonotus. Hisonotus pachysarkos and H. paulinus not examined.
FIGURE 4 in A new species of Otothyropsis (Siluriformes: Loricariidae) from the upper Río Paraná basin, Paraguay, with a discussion of the limits between Otothyropsis and Hisonotus
FIGURE 4. Posterolateral region of head of Otothyropsis and Hisonotus. (A) O. marapoama, MCP 42119; (B) O. biamnicus, MCP 37164; (C) H. charrua, MCP 27539; (D) H. nigricauda, MCP 26865. Dashed lines indicate position of swimbladder capsule; CPT, compound pterotic; TPCC, transverse process of the complex centrum; arrows indicate extension of compound pterotic. Scale bar = 2 mm.
FIGURE 3 in A new species of Otothyropsis (Siluriformes: Loricariidae) from the upper Río Paraná basin, Paraguay, with a discussion of the limits between Otothyropsis and Hisonotus
FIGURE 3. Map of southeastern South America depicting generalized distributions of species currently assigned to Otothyropsis and Hisonotus. Green: 1. Otothyropsis alicula; 2. Otothyropsis biamnicus; 3. Otothyropsis dialeukos; 4. Otothyropsis marapoama; 5. Otothyropsis piribebuy; 6. Otothyropsis polyodon; 7. Hisonotus alberti; 8. Hisonotus depressicauda; 9. Hisonotus depressinotus; 10. Hisonotus francirochai; 11. Hisonotus pachysarkos; 12. Hisonotus paulinus; 13. Hisonotus vespuccii. Purple: 14. Hisonotus aky; 15. Hisonotus armatus; 16. Hisonotus brunneus; 17. Hisonotus carreiro; 18. Hisonotus charrua; 19. Hisonotus heterogaster; 20. Hisonotus hungy; 21. Hisonotus iota; 22. Hisonotus laevior; 23. Hisonotus leucofrenatus; 24. Hisonotus leucophrys; 25. Hisonotus maculipinnis; 26. Hisonotus megaloplax; 27. Hisonotus montanus; 28. Hisonotus nigricauda; 29. Hisonotus notatus; 30. Hisonotus notopagos; 31. Hisonotus prata; 32. Hisonotus ringueleti; 33. Hisonotus taimensis; 34. Hisonotus thayeri; 35. Hisonotus vireo; 36. Hisonotus yasi. Distribution patches based on comparative material examined and on literature. Dotted blue line represents the limit between Pattern A and Pattern B areas of distribution.
Evidence that metapopulation dynamics maintain a species' range limit
<p>This zip folder includes both raw data from a multi-year (2019 and 2022) survey of coastal dune habitat and occupancy by <em>Camissoniopsis cheiranthifolia</em>, as well as an R project and associated scripts for an analysis of variation in metapopulation dynamics towards a species' range limit.</p>
Subspecies and Distribution. T.n.napuF.Cuvier,1822—SMyanmar,Thai/MalayPeninsula,islandsoffWMalayPeninsula(Langkawi&Pangkor),Borneo,SSumatra,BangkaI,islandsoffBorneo(Laut&Serasan). T.n.bangue:Chasen&Kloss,1931—BanggiIandBalembanganI,offNBorneo. T.n.bunguranensisMiller,1901—NatunaIs(=Bunguran),oftWBorneo. T.n.neubronneriSody,1931—NSumatra. T.n.nmiasisLyon,1916—NiasI,offWSumatra. T.n.rufulusMiller,1900—TiomanI,offEMalayPeninsula,RiauandLinggaArchipelagos. T. n. terutus Thomas & Wroughton, 1909 — Terutau I, off W Malay Peninsula. The species was recently reconfirmed for Singapore. Maps that include Vietnam, Cambodia, and Laos in the distribution range are based on the earlier assumption that 7. versicolor was a subspecies of 1. napu. Subsequent studies have indicated that 7. versicolor is a distinct species, and that the range of 1. napu therefore does not extend into Cambodia, Laos, and Vietnam. The northern limit on the Thai-Malay peninsula is not well defined. Specimens of 1. napu have been collected from as far north as Bankachon in southern Myanmar (10° 08" N), but despite fairly intensive camera-trapping in Kui Buri National Park, Thailand (12° N), 7. napu has not been photographed there. At the northern margin ofits range, it is generally rare. It has been reported, for example, that during the flooding of the Chiew Larn Reservoir (Surat Thani Province; about 9° N, 98° 45' E), only six 7. napu were rescued compared with 172 71. kanchil. This area is the transition zone from wetter evergreen forest to drier deciduous types, and it might be that 7° napu is not well adapted to the drier forest types towards the northern limit ofits range. There are unconfirmed reports of the species on Java, where it may have been confused with one of the two color morphs of 7. javanicus. As explained in the Taxonomy section, the subspecific status of the populations of several islands remains unclear. in Tragulidae
Subspecies and Distribution. T.n.napuF.Cuvier,1822—SMyanmar,Thai/MalayPeninsula,islandsoffWMalayPeninsula(Langkawi&Pangkor),Borneo,SSumatra,BangkaI,islandsoffBorneo(Laut&Serasan). T.n.bangue:Chasen&Kloss,1931—BanggiIandBalembanganI,offNBorneo. T.n.bunguranensisMiller,1901—NatunaIs(=Bunguran),oftWBorneo. T.n.neubronneriSody,1931—NSumatra. T.n.nmiasisLyon,1916—NiasI,offWSumatra. T.n.rufulusMiller,1900—TiomanI,offEMalayPeninsula,RiauandLinggaArchipelagos. T. n. terutus Thomas & Wroughton, 1909 — Terutau I, off W Malay Peninsula. The species was recently reconfirmed for Singapore. Maps that include Vietnam, Cambodia, and Laos in the distribution range are based on the earlier assumption that 7. versicolor was a subspecies of 1. napu. Subsequent studies have indicated that 7. versicolor is a distinct species, and that the range of 1. napu therefore does not extend into Cambodia, Laos, and Vietnam. The northern limit on the Thai-Malay peninsula is not well defined. Specimens of 1. napu have been collected from as far north as Bankachon in southern Myanmar (10° 08" N), but despite fairly intensive camera-trapping in Kui Buri National Park, Thailand (12° N), 7. napu has not been photographed there. At the northern margin ofits range, it is generally rare. It has been reported, for example, that during the flooding of the Chiew Larn Reservoir (Surat Thani Province; about 9° N, 98° 45' E), only six 7. napu were rescued compared with 172 71. kanchil. This area is the transition zone from wetter evergreen forest to drier deciduous types, and it might be that 7° napu is not well adapted to the drier forest types towards the northern limit ofits range. There are unconfirmed reports of the species on Java, where it may have been confused with one of the two color morphs of 7. javanicus. As explained in the Taxonomy section, the subspecific status of the populations of several islands remains unclear.
Data from: Intersexual flower differences in an andromonoecious species: small pollen‐rich staminate flowers under resource limitation
<p>Data archived here were used for analyses in Murakami et al. "Intersexual flower differences in an andromonoecious species: small pollen‐rich staminate flowers under resource limitation." Data is in three worksheets.</p>
Taxonomy based on limited genomic markers may underestimates species diversity of rockhopper penguins and threaten their conservation
<p><span><span><span><span><span><span><span><span><span><span><span>Delimiting recently diverged species is challenging. During speciation, genetic differentiation may be distributed unevenly across the genome, as different genomic regions can be subject to different selective pressures and evolutionary histories. Reliance on limited numbers of genetic markers that may be underpowered can make species delimitation even more challenging, potentially resulting in taxonomic inconsistencies. Rockhopper penguins of the genus <i>Eudyptes</i> comprise three broadly recognized taxa: northern (<i>E. moseleyi</i>), southern (<i>E. chrysocome</i>), and eastern rockhopper (<i>E. filholi</i>). Their taxonomic status has been controversial for decades, with researchers disagreeing about whether <i>E. chrysocome</i> and <i>E. filholi</i>are distinct species or conspecific. Our goal is to evaluate genome-wide patterns of divergence to evaluate genetic differentiation and species delimitation in<i> </i>rockhopper penguins<i>, </i>and to assess which mechanisms may underlie previous discordance among nuclear versus mitochondrial analyses. We generated reduced-representation genomic libraries using Double Digest Restriction-site Associated DNA (ddRAD) sequencing to evaluate genetic differentiation, contemporary migration rates and admixture among colonies of rockhopper penguins. The extent of genetic differentiation among the three taxa was consistently higher than population-level genetic differentiation found within these and other penguin species. There was no evidence of admixture among the three taxa, suggesting the absence of ongoing gene flow among them. Species delimitation analyses based on molecular data, along with other lines of evidence, provide strong support for the taxonomic distinction of three species of rockhopper penguins. Our results provide strong support for the existence of three distinct species of rockhopper penguins. The recognition of this taxonomic diversity is crucial for the management and conservation of this widely distributed species group. This study illustrates that widespread dispersive seabird lineages lacking obvious morphological differences may nevertheless have complex evolutionary histories and comprise cryptic species diversity. </span></span></span></span></span></span></span></span></span></span></span></p>
Data from: Joint effects of environmental filtering and dispersal limitation on species assemblage of the Tibetan Plateau
<p><strong>Aim</strong> Mountains harbour a rich and non-random cluster of species, yet knowledge on the species' biological attributes that support species coexistence in the montane community is limited. Here, we investigated the association of species occurrence on the Tibetan Plateau with species' morphological, ecological or evolutionary constraints.</p> <p><strong>Location</strong> Tibetan Plateau (TP)</p> <p><strong>Taxon</strong> Mammals and birds</p> <p><strong>Methods </strong>We tested whether species occurrence on the TP correlates with morphological, ecological, or evolutionary constraints using the spatial distribution, phylogeny, dispersal ability, and thermal niche property data for 1,353 terrestrial vertebrates (383 mammals and 970 birds). We used standard (non-phylogenetic) and phylogenetic logistic regressions to disentangle the relative contributions of these attributes of species in explaining the species occurrence on the TP. We assessed the geographical patterns of community structures on the TP and fit linear mixed models to explore the underlying eco-evolutionary forces.</p> <p><strong>Results</strong> The TP species exhibited a higher cold tolerance, wider thermal niche breadth, and higher rate of niche evolution than the non-TP species. We supported the assumption that the TP species was not a random subset from the species pool, but was structured jointly by environmental filtering and dispersal limitation. While dispersal and ecological processes underlying species assemblages varied spatially and among taxa, we found that species in stressful environments was limited by environmental filtering, whereas dispersal limitation was more pronounced under favourable climatic conditions.</p> <p><strong>Main conclusions</strong> Our study finds that environmental filtering and dispersal limitation jointly shape the species assemblage on the TP. These findings provide significant insights into community assembly processes on the TP and other montane ecosystems on Earth, especially those that are sensitive to global warming.</p>
Fig. 2 in Cordulegaster bidentata Selys, 1843 in fragmented landscape of the Wielickie Foothills: reassesement of the northern limit of species range in the Western Carpathians
Fig. 2. Distribution of Cordulegaster bidentata in Poland. 1 – known range, 2 – potential range (according to Bernard et al. 2009, Smolis et al. 2012), 3 – disjuntive site in the Wiśnickie Foothills (Kłonowska-Olejnik & Buczyński 2014), 4 – past record of single imago from Kraków (Prüffer 1920), 5 – northern border of the Carpathians, 6 – state border, 7 – main rivers, 8 – study area.
Fig. 3 in Cordulegaster bidentata Selys, 1843 in fragmented landscape of the Wielickie Foothills: reassesement of the northern limit of species range in the Western Carpathians
Fig. 3. Map of the study area and discovered sites of Cordulegaster bidentata. 1 – study area, 2 – forests, 3 – cities, 4 – watercourses, 5 – searched stream sections, 6 – localities of C. bidentata larvae.
Distribution. Presumably found across New Guinea (possibly widespread in N lowlands) and also on Raja Ampat Is (Waigeo and Salawati); distributional limits between this species and the Steadfast Tube-nosed Fruit Bat (FP. tenax) are uncertain, and thus distribution given here is tentative. in Pteropodidae
Distribution. Presumably found across New Guinea (possibly widespread in N lowlands) and also on Raja Ampat Is (Waigeo and Salawati); distributional limits between this species and the Steadfast Tube-nosed Fruit Bat (FP. tenax) are uncertain, and thus distribution given here is tentative.
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.