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338 results for “Geographic ranges”
Data from: Historical and recent processes shaping the geographic range of a rocky intertidal gastropod: phylogeography, ecology, and habitat availability
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Data from: Energy expenditure and body size are targets of natural selection across a wide geographic range, in a terrestrial invertebrate
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Dataset for estimation of the biotic and climatic niche breadths and geographic range size of beech (Fagus) species worldwide
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Data from: Incomplete datasets obscure associations between traits affecting dispersal ability and geographic range size of reef fishes in the Tropical Eastern Pacific
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Geographic range size, water temperature and extrinsic threats predict the extinction risk in global cetaceans
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Adaptation across geographic ranges is consistent with strong selection in marginal climates and legacies of range expansion
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Data from: Geographic range size and latitude predict population genetic structure in a global survey
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Data from: How species longevity, intraspecific morphological variation, and geographic range size are related: a comparison using late Cambrian trilobites
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Data from: Weak geographical structure in sperm morphology across the range of two willow warbler Phylloscopus trochilus subspecies in Scandinavia
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Data from: Tackling intraspecific genetic structure in distribution models better reflects species geographical range
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Data from: Evolutionary patterns in the geographic range size of Atlantic Forest plants
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Data for: Human food use increases plant geographic ranges in the Sonoran Desert
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Connecting species’ geographical distributions to environmental variables: range maps versus observed points of occurrence
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Figure 4 from: Cuevas CC, Sanhueza R (2020) Geographic boundaries and natural history notes of the microendemic endangered frog Eupsophus migueli Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile. ZooKeys 929: 79-92. https://doi.org/10.3897/zookeys.929.35984
Figure 4 Scheme of the life history data of E. migueli (this paper) and E. altor. Data for E. altor were obtained from Núñez et al. (2012).
Figure 1 from: Cuevas CC, Sanhueza R (2020) Geographic boundaries and natural history notes of the microendemic endangered frog Eupsophus migueli Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile. ZooKeys 929: 79-92. https://doi.org/10.3897/zookeys.929.35984
Figure 1 A Distribution map of Eupsophus migueli. The red polygon corresponds to an updated distribution area of E. migueli, and it is formed by georeferenced landmarks including new records (this paper), old records (including the type locality, Mehuín, and nearby localities Queule and Pichicuyín) and other documented points (Méndez et al. 2005, Contreras 2014, Miranda 2015) B specimen of E. migueli from Colehual Alto.
Figure 3 from: Cuevas CC, Sanhueza R (2020) Geographic boundaries and natural history notes of the microendemic endangered frog Eupsophus migueli Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile. ZooKeys 929: 79-92. https://doi.org/10.3897/zookeys.929.35984
Figure 3 Habitat of Eupsophus migueliA, D native forest with anthropogenic disturbance in Boroa Norte 1 B pine monoculture with undergrowth habitat of Aristotelia chilensis in Boroa Norte 4 C, E native forest in El Socorro.
Figure 2 from: Cuevas CC, Sanhueza R (2020) Geographic boundaries and natural history notes of the microendemic endangered frog Eupsophus migueli Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile. ZooKeys 929: 79-92. https://doi.org/10.3897/zookeys.929.35984
Figure 2 Dorsal (capitals) and ventral (lowercase) patterns of pigmentation in Eupsophus migueli from different localities along its distribution range. A Dorsal pattern of dark brown (Socorro) a ventral white with longitudinal spots (El Socorro, Boroa Norte) B dorsal yellow pattern and b belly with yellow crosslinks (El Socorro) C dorsal pattern yellow with brown spots and c belly with yellow longitudinal spots (El Socorro, Boroa Norte) D dorsal pattern dark brown and d belly with whitish faded spots. All specimens were adults ranging in size from 4 to 5 cm.
Data from: Decoupling of latitudinal gradients in species and genus geographic range size: a signature of clade range expansion
Aim. Clade range size is a function of species range sizes but also depends on the geographic deployment of species; clade range expansion should therefore depend partly on a clade's tendency to produce new species. Under high speciation pressure, species-rich clades can migrate outside its present distribution, and thus overcome niche conservatism. A simple probabilistic mechanism for an out-of-tropics dynamic (OTT) for clade range expansion can thus operate in the absence of species-level differences in probability of range expansion, with speciation into novel climates more likely to occur in species-rich clades. In this scenario, (a) species and clade range sizes are decoupled and (b) clade range expansion is a function of per-clade species diversification. To test these predictions that can discriminate between a weaker and a stronger climatic niche conservatism, we contrast the latitudinal and thermal range sizes of marine bivalves at the species and clade (genus) level. Location. Western Pacific, Eastern Pacific, and Western Atlantic. Methods. We decompose the latitudinal and thermal distribution of genera into within-species and among-species dispersions and quantify their contributions to genus range size and species richness. We model the latitudinal gradient in per-genus species richness with a scenario where species range expansion does not vary with latitude. Result. Genus latitudinal range size cannot be predicted from the latitudinal range sizes of congeneric species, but strongly depends on latitudinal distances among species centroids, which correlate strongly with per-genus species richness. Genus thermal ranges correlate with the thermal ranges of congeneric species and thus support thermal conservatism of genera, but they correlate even more strongly with thermal differentiation among congeneric species. Genus latitudinal and thermal range sizes increase towards higher latitudes because genera that are species-rich anywhere within their range increase in proportion towards higher latitudes. Main Conclusions. The probabilistic model represents a first-order neutral expectation of clade-level range expansion at multiple phylogenetic levels arising from clade differences in net species diversification. Unless opposed by a strong niche conservatism, clade species richness can promote genus range expansion to new latitudes and climates. Species diversification thus plays a significant role in range expansion of marine genera even when thermal range sizes and limits of clades are conserved.
Data from: Reconstructing geographic range size dynamics from fossil data
Ecologists and paleontologists alike are increasingly using the fossil record as a spatial data set, in particular to study the dynamics and distribution of geographic range sizes among fossil taxa. However, no attempts have been made to establish how accurately range sizes and range-size dynamics can be preserved. Two fundamental questions are: Can common paleo range-size reconstruction methods accurately reproduce known species' ranges from locality (i.e., point) data? And, are some reconstruction methods more reliable than others? Here, we develop a methodological framework for testing the accuracy of commonly used paleo range-size reconstruction methods (maximum latitudinal range, maximum great-circle distance, convex hull, and alpha convex hull) in different extinction-related biogeographic scenarios. We use the current distribution of surface water bodies as a proxy for "preservable area," in which to test the performance of the four methods. We find that maximum great-circle distance and convex-hull methods most reliably capture changes in range size at low numbers of fossil sites, whereas convex hull performs best at predicting the distribution of "victims" and "survivors" in hypothetical extinction scenarios. Our results suggest that macroevolutionary and macroecological patterns in the relatively recent past can be studied reliably using only a few fossil occurrence sites. The accuracy of range-size reconstruction undoubtedly changes through time with the distribution and area of fossiliferous sediments; however, our approach provides the opportunity to systematically calibrate the quality of the spatial fossil record in specific environments and time intervals, and to delineate the conditions under which paleobiologists can reconstruct paleobiogeographical, macroecological, and macroevolutionary patterns over critical intervals in Earth history.
Data from: Lack of genetic variation prevents adaptation at the geographic range margin in a damselfly
What limits a species' distribution in the absence of physical barriers? Genetic load due to asymmetric gene flow and the absence of genetic variation due to lack of gene flow are hypothesized to constrain adaptation to novel environments in marginal populations, preventing range expansion. Here, we examined the genetic structure and geographic variation in morphological traits in two damselflies (Ischnura asiatica and I. senegalensis) along a latitudinal gradient in Japan, which is the distribution centre of I. asiatica and the northern limit of I. senegalensis. Genomewide genetic analyses found a loss of genetic diversity at the edge of distribution in I. senegalensis but consistently high diversity in I. asiatica. Gene flow was asymmetric in a south–north direction in both species. Although body size and wing loading showed decreasing latitudinal clines (smaller in north) in I. asiatica in Japan, increasing latitudinal clines (larger in north) in these phenotypic markers were observed in I. senegalensis, particularly near the northern boundary, which coincided well with the location where genetic diversity began a sharp decline. In ectothermic animals, increasing latitudinal cline in these traits was suggested to be established when they failed to adapt to thermal gradient. Therefore, our findings support the possibility that a lack of genetic variation rather than geneflow swamping is responsible for the constraint of adaptation at the margin of geographic distribution.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.