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.
147
datasets available to search
ShareScore release 0.9.0
Dataset results
147 results for “microendemic”
Fig. 2 in Hemipogon trilobatus sp. nov. (Apocynaceae: Asclepiadoideae), a new microendemic from Chapada dos Veadeiros, Central Brazil
Fig. 2. Habitat and distribution of Hemipogon trilobatus Bitencourt & Rapini sp. nov. A. Open savannah in Chapada dos Veadeiros, state of Goiás, Brazil. Photo by CB. B. Map showing the geographic distribution of H. trilobatus sp. nov. in the Cerrado domain (shaded area at reference map in A) and its occurrence (black star) nearby the Chapada dos Veadeiros National Park. Images and distribution maps were built and exported using ArcGIS online (https://www.arcgis.com). © Esri and its licensors, all rights reserved.
Fig. 1 in Hemipogon trilobatus sp. nov. (Apocynaceae: Asclepiadoideae), a new microendemic from Chapada dos Veadeiros, Central Brazil
Fig. 1. Hemipogon trilobatus Bitencourt & Rapini sp. nov. A. Habitus. B. Cyme with two flowers and a bud. C. Flower. D. Flower with calyx and two corolla lobes removed to show the gynostegium. E. Corolla lobe, adaxial view. F. Anther with a staminal corona lobe basally attached. G. Corona lobe showing the 3-lobed apex, adaxial view. H. Gynostegium, viewed from above. I. Pollinarium. Drawn by Pétala Gomes Ribeiro from the holotype (IBGE[33546]).
Linked collectors and determiners for: Rivaling the World's Smallest Reptiles: Discovery of Miniaturized and Microendemic New Species of Leaf Chameleons (Brookesia) from Northern Madagascar.
Natural history specimen data linked to collectors and determiners held within, "Rivaling the World's Smallest Reptiles: Discovery of Miniaturized and Microendemic New Species of Leaf Chameleons (Brookesia) from Northern Madagascar". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/898ecee8-1c5a-4969-b340-03a52d6bb1bd">https://bionomia.net/dataset/898ecee8-1c5a-4969-b340-03a52d6bb1bd</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/898ecee8-1c5a-4969-b340-03a52d6bb1bd">https://gbif.org/dataset/898ecee8-1c5a-4969-b340-03a52d6bb1bd</a>. Formatted as a Frictionless Data package.
FIG. 3 in The French Polynesian Atractocarpus Schltr. & K.Krause (Rubiaceae): circumscription of A. tahitensis and description of A. teamotuaitaui sp. nov., both microendemic and critically endangered species in the Society Islands
FIG. 3. — Atractocarpus tahitensis (Nadeaud) Puttock: A, leafy branch of the species, under the typical vegetation cover; B, unripe fruit; C, flower in lateral view; D, floriferous brachyblast of a perennial inflorescence; E, mature flowers and flower buds. Photos by J.-F. Butaud.
FIG. 2 in The French Polynesian Atractocarpus Schltr. & K.Krause (Rubiaceae): circumscription of A. tahitensis and description of A. teamotuaitaui sp. nov., both microendemic and critically endangered species in the Society Islands
FIG. 2. — Satellite picture of Tahiti and location of extant and extinct populations of both Atractocarpus Schltr. & K.Krause species.
FIG. 1 in The French Polynesian Atractocarpus Schltr. & K.Krause (Rubiaceae): circumscription of A. tahitensis and description of A. teamotuaitaui sp. nov., both microendemic and critically endangered species in the Society Islands
FIG. 1. — Map of French Polynesia archipelagos and main islands showing Tahiti and Raiatea (in red) among the Society Islands.
FIG. 4 in The French Polynesian Atractocarpus Schltr. & K.Krause (Rubiaceae): circumscription of A. tahitensis and description of A. teamotuaitaui sp. nov., both microendemic and critically endangered species in the Society Islands
FIG. 4. — Atractocarpus teamotuaitaui Mouly & Butaud, sp. nov.: A, leafy and flowering branch of the species, under the secondary vegetation cover; B, apical stipules; C, flower at anthesis; D, stipules and detail of the leaf-base at a ramification; E, unripe fruit on a branch with the congested leaf cluster. Photos by J.-F. Butaud.
Data from: Cryptic patterns of speciation in cryptic primates: microendemic mouse lemurs and the multispecies coalescent
Species delimitation is ever more critical for assessing biodiversity in threatened regions of the world, especially when undescribed lineages may be at risk from habitat loss. Mouse lemurs (Microcebus) are an example of a rapid radiation of morphologically cryptic species that are distributed throughout Madagascar in its rapidly vanishing forested habitats. Here, we focus on two pairs of sister lineages that occur in a region in northeastern Madagascar that shows high levels of microendemism. We revisit previous hypotheses of species diversity by filling geographic sampling gaps and by generating new genomic data for three named species, as well as an undescribed lineage previously identified to be of interest due to its highly divergent mtDNA. We analyzed RADseq data with multiple species delimitation methods based on the multispecies coalescent (MSC) model while accounting for introgression. Non-sister lineages occur sympatrically in two instances, despite an estimated divergence time of less than 1 Ma, thus suggesting rapid evolution of reproductive isolation in the mouse lemur clade. We note, however, that the divergence time estimates reported here are based on the MSC and calibrated with pedigree-based primate mutation rates. These dates are considerably more recent than previous analyses that used traditional relaxed clock methods and distant fossil calibrations. One pair of sister lineages passed all species delimitation tests while the other pair failed most, largely due to differences in Ne between the two pairs of lineages. Nevertheless, delimitation results were also supported by differences in levels of gene flow and patterns of isolation-by-distance between the two pairs. We conclude that MSC-based species delimitation methods are valuable tools for evaluating cryptic species, even though these methods can be strongly affected by variable Ne. We suggest that this result has general implications for species delimitation studies of other recently diverged lineages.
Data from: Genetic structure and diversity of the blueface darter Etheostoma cyanoprosopum, a microendemic freshwater fish in the southeastern United States
Darters represent one of the most diverse groups of freshwater fishes in North America, but approximately 33% of the 215 recognized species are considered imperiled on the IUCN Red List. Discovery and description of new darter species continues at a relatively rapid pace, with many exhibiting microendemic geographic distributions and little baseline data for conservation decisions. The Blueface Darter Etheostoma cyanoprosopum is a newly described species that occupies < 20 km of stream reaches in the Bear Creek system of the Tennessee River drainage and the Hubbard Creek system of the Black Warrior River drainage in the Mobile Basin (Alabama, USA). In addition to restricted distribution, the species is threatened by habitat degradation and several natural and man-made barriers that putatively fragment connectivity among populations. This study used microsatellite and mitochondrial (mt) DNA data with comparisons to the relatively broadly distributed sister species (Bandfin Darter E. zonistium) to evaluate multiple objectives about genetic connectivity and diversity among Blueface Darter populations. Analysis of mtDNA data indicated a lack of historical structuring across the Tennessee-Black Warrior river drainage divide and within the Bear Creek system. However, microsatellite-based Bayesian cluster analyses and F-statistics suggested contemporary isolation across the drainage divide and evidence for reservoir-induced fragmentation within the Bear Creek system. Compared to the sister Bandfin Darter, Blueface Darter populations exhibited reduced levels of genetic diversity, rendering them more susceptible to local extirpation and reduced fitness. Continued monitoring and quantitative ecological studies are recommended to understand population-specific measures of occurrence and abundance.
Data from: Genomic diversity and structure of a Neotropical microendemic fig tree
<p>Genetic diversity is a key component of evolution and unraveling factors that promote genetic differentiation in space and time is a central question in evolutionary biology. One of the most diverse and ecologically important tree genera in tropical forests worldwide is <em>Ficus (Moraceae)</em>. It has been suggested that, given the great dispersal capacity of pollinating fig wasps (Chalcidoidea; Agaonidae), the spatial genetic structure, particularly in monoecious fig species, should be weak. However, no studies have addressed the factors that determine the genetic structure of <em>Ficus</em> species in regions of high geological, geographic, and climatic complexity, such as the Mexican Transition Zone. Using nuclear single nucleotide polymorphisms (5,311 SNPs) derived from low-coverage whole genomes and 17 populations, we analyzed the population genomics of <em>Ficus</em> <em>pringlei</em> to characterize neutral and adaptive genetic variation and structure and its association with geographic barriers such as the Trans-Mexican Volcanic Belt, environmental heterogeneity, and wind connectivity. From genomic data of 71 individuals, high genetic diversity, and the identification of three genomic lineages were recorded (North, South, and Churumuco). The results suggest that genetic variation is primarily determined by climatic heterogeneity. <em>Ficus</em> <em>pringlei</em> populations from the north and south of the Trans-Mexican Volcanic Belt also exhibited minimal genetic differentiation (F<sub>ST</sub>= 0.021), indicating that this mountain range may not act as an insurmountable barrier to gene flow. Wind connectivity is also highlighted in structuring putative adaptive genetic variation, underscoring the intricate complexity of the various factors influencing genetic variation in the species. This study provides information on the possible mechanisms underlying the genetic variation of endemic species of the tropical dry forest of Western Mexico, such as <em>F</em>. <em>pringlei</em>.</p>
Data from: Cryptic patterns of speciation in cryptic primates: microendemic mouse lemurs and the multispecies coalescent
Open the record for dataset details and reuse information.
Data from: Genetic structure and diversity of the blueface darter Etheostoma cyanoprosopum, a microendemic freshwater fish in the southeastern United States
Open the record for dataset details and reuse information.
Data from: Genomic diversity and structure of a Neotropical microendemic fig tree
Open the record for dataset details and reuse information.
F I G U R E 7 in Ecology and morphology of mouse lemurs (Microcebus spp.) in a hotspot of microendemism in northeastern Madagascar, with the description of a new species
F I G U R E 7 Outer morphology of Microcebus jonahi. (a) Drawing of an adult individual; (b) Habitus of adult female (paratype individual BD1); (c–e) Close‐ups of adult male (holotype B34). Illustration copyright by Stephen D. Nash/IUCN SSC Primate Specialist Group; used with permission. Photos by D. Schüssler
F I G U R E 6 in Ecology and morphology of mouse lemurs (Microcebus spp.) in a hotspot of microendemism in northeastern Madagascar, with the description of a new species
F I G U R E 6 Reproductive records for adult males (a) and females (b) of Microcebus spp. in northeastern Madagascar and presence of juvenile individuals (c) in the population
F I G U R E 5 in Ecology and morphology of mouse lemurs (Microcebus spp.) in a hotspot of microendemism in northeastern Madagascar, with the description of a new species
F I G U R E 5 Linear discriminant analysis including all morphometric parameters (except third toe length). All five linages can be distinguished statistically (Wilk's lambda = 0.005; F = 10.338; p <.001) with a misclassification rate of 12.8%. dia, Mantadia NP; vala, Ambavala
F I G U R E 4 in Ecology and morphology of mouse lemurs (Microcebus spp.) in a hotspot of microendemism in northeastern Madagascar, with the description of a new species
F I G U R E 4 Principal component analysis including all morphometric parameters (except third toe length) showing PC1/PC2 (left) and PC3/PC4 (right). Small (M. mittermeieri and M. lehilahytsara) and large (M. sp. #3 and M. macarthurii) lineages differ along PC1, with some differentiation of M. mittermeieri and M. lehilahytsara along both PC1 and PC2, whereas M. sp. #3 and M. macarthurii split along PC3. Clusters corresponding to the five lineages were significantly different from each other (PERMANOVA: F = 36.88; df = 77; p <.001). dia, Mantadia NP; PERMANOVA, permutational multivariate analysis of variances; vala, Ambavala
F I G U R E 2 in Ecology and morphology of mouse lemurs (Microcebus spp.) in a hotspot of microendemism in northeastern Madagascar, with the description of a new species
F I G U R E 2 Maximum likelihood tree illustrating the phylogenetic relationships between Microcebus spp. in northeastern Madagascar as inferred by RAxML (based on nuclear sequence data). Sampling locations are indicated at the tips of the branches. Illustration adapted from Poelstra et al. (2020). NP, National Park; SNR, Special Nature Reserve; SR, Special Reserve
F I G U R E 1 in Ecology and morphology of mouse lemurs (Microcebus spp.) in a hotspot of microendemism in northeastern Madagascar, with the description of a new species
F I G U R E 1 Map depicting the study region with confirmed species occurrences (Hotaling et al., 2016; Kappeler et al., 2005; Louis et al., 2006; Radespiel et al., 2008, 2012; Weisrock et al., 2010). New sampling locations for this study are indicated with "*" and forest cover in 2017/2018 was derived from Vieilledent et al. (2018) and Schüssler et al. (2020). NP, National Park; SNR, Special Nature Reserve; SR, Special Reserve
F I G U R E 3 in Ecology and morphology of mouse lemurs (Microcebus spp.) in a hotspot of microendemism in northeastern Madagascar, with the description of a new species
F I G U R E 3 Selected morphometric measurements of Microcebus spp. in northeastern Madagascar. Comparison based on one‐way ANOVA (p <.001 for all parameters) and grouping (letters above values) according to Tukey post hoc tests. Plots for all parameters in Figure S1. ANOVA, analysis of variance; leh, M. lehilahytsara (at Mantadia NP); mac, M. macarthurii (at Anjiahely); mit, M. mittermeieri (at Anjiahely); sim, M. simmonsi (at Ambodiriana); sp.3, M. sp. #3 (at Ambavala and Antanambe)
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.