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ShareScore release 0.9.0
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208 results for “geographic patterns”
Data from: Patterns of geographic distribution have a considerable influence on population genetic structure in one common and two rare species of Rhododendron (Ericaceae)
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Data from: Regional and local patterns of genetic variation and structure in yellow-necked mice − the roles of geographic distance, population abundance and winter severity
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Data from: Geographic patterns of genetic variation in three genomes of North American diploid strawberries with special reference to Fragaria vesca subsp. bracteata
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Data from: Targeted resequencing reveals geographical patterns of differentiation for loci implicated in parallel evolution
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Data from: SNP-array reveals genome wide patterns of geographical and potential adaptive divergence across the natural range of Atlantic salmon (Salmo salar)
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Data from: Contrasting patterns of clonality and fine-scale genetic structure in two rare sedges with differing geographic distributions
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Data from: Temporal activity patterns of predators and prey across broad geographic scales
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Data from: Long-term persisting hybrid swarm and geographic difference in hybridization pattern: genetic consequences of secondary contact between two Vincetoxicum species (Apocynaceae–Asclepiadoideae)
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Data from: Phylogeography of a widespread lizard complex reflects patterns of both geographic and ecological isolation
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Data from: Geographically widespread honeybee-gut symbiont subgroups show locally distinct antibiotic-resistant patterns
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Data from: How geographic productivity patterns affect food-web evolution
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Data from: Phylogenetic patterns of geographical and ecological diversification in the subgenus Drosophila
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Differential geographic patterns in song components of male Albert’s lyrebirds
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Data from: Evolutionary patterns in the geographic range size of Atlantic Forest plants
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Fig. 10 in Annonaceae in the Western Pacific: geographic patterns and four new species
Fig. 10. Regional distribution of the genus Goniothalamus (Annonaceae) in the Pacific. Base map sourced from CartoGIS, College of Asia and the Pacific, The Australian National University, Australia.
Fig. 20 in Annonaceae in the Western Pacific: geographic patterns and four new species
Fig. 20. Regional distribution of the Annonaceae in the Pacific. The numbers next to each island or island group represents the number of native Annonaceae species and genera found there (number of species/number of genera). The numbers for New Guinea remain approximate. The numbers for the Solomon Islands include Bougainville and the Santa Cruz Islands. Base map sourced from CartoGIS, College of Asia and the Pacific, The Australian National University, Australia.
Fig. 19 in Annonaceae in the Western Pacific: geographic patterns and four new species
Fig. 19. Regional distribution of the genus Xylopia (Annonaceae) in the Pacific. Base map sourced from CartoGIS, College of Asia and the Pacific, The Australian National University, Australia.
Demographic history shaped geographical patterns of deleterious mutation load in a broadly distributed Pacific Salmon
<p class="17"><span>A thorough reconstruction of historical processes is essential for a comprehensive understanding the mechanisms shaping patterns of genetic diversity. Indeed, past and current conditions influencing effective population size have important evolutionary implications for the efficacy of selection, increased accumulation of deleterious mutations, and loss of adaptive potential. Here, we gather extensive genome-wide data that represent the extant diversity of the Coho salmon (<i><span>Oncorhynchus kisutch</span></i>) to address two objectives. We demonstrate that a single glacial refugium is the source of most of the present-day genetic diversity, with detectable inputs from a putative secondary micro-refugium. We found statistical support for a scenario whereby ancestral populations located south of the ice sheets expanded in postglacial time, swamping out most of the diversity from other putative micro-refugia. Demographic inferences revealed that genetic diversity was also affected by linked selection in large parts of the genome. Moreover, we demonstrate that the recent demographic history of this species generated regional differences in the load of deleterious mutations among populations, a finding that mirrors recent results from human populations and provides increased support for models of expansion load. We propose that insights from these historical inferences should be better integrated in conservation planning of wild organisms, which currently focuses largely on neutral genetic diversity and local adaptation, with the role of potentially maladaptive variation being generally ignored.</span></p>
Extraordinary variation in a simple song: No geographical patterns in initial phrase variation of the Yellowhammer, a passerine with pronounced dialects
<p>Geographical variation of birdsong is used to study various topics from cultural evolution to mechanisms responsible for reproductive barriers or song acquisition. In species with pronounced dialects, however, patterns of variation in nondialect parts of the song are usually overlooked. We focused on the individually variable initial phrase of the song of the Yellowhammer (Emberiza citrinella), a common Palearctic passerine which became a model species for dialect research. We used a quantitative method to compare the similarity of initial phrases from the repertoires of 237 males recorded at different spatial scales in a central European country covering all main dialect types. We hypothesized that patterns of initial phrase sharing and/or phrase similarity are affected by dialect boundaries and geographical proximity (i.e. that birds from the same dialect regions use more similar phrases or share them more often). Contrary to our expectations, initial phrase variation seems unrelated to dialects, as we did not find higher similarity either among recordings from the same dialect areas or among those from the same locality. Interestingly, despite the immense variability of phrase types detected (only 16% of 368 detected initial phrase types were shared between at least 2 males), a relatively high proportion of males (45%) was involved in sharing, and males using the same initial phrase were located anywhere from tens of meters to hundreds of kilometers apart. The patterns of variation suggest that precise copying during song learning as well as improvisation play important roles in forming individual repertoires in the Yellowhammer. Our data also confirm previous indications that the repertoires of Yellowhammer males (i.e. the composition of initial phrases) are individually unique and temporally stable. This makes the species a good candidate for individual acoustic monitoring, useful for detailed population or behavioral studies without the need for physical capture and marking of males.</p>
Primary data on skull and brain morphology for: Geographical patterns in seasonal changes of body mass, skull, and brain size of common shrews
<p class="Standard">Some small mammals exhibit Dehnel's Phenomenon, a drastic decrease in body mass, braincase and brain size from summer to winter, followed by regrowth in spring. This is accompanied by a reorganization of the brain and changes in other organs. The evolutionary link between these changes and seasonality remains unclear, although the intensity of change varies between locations as the phenomenon is thought to lead to energy savings during winter.</p> <p class="Standard">Here we explored geographic variation of the intensity of Dehnel's Phenomenon in <i>Sorex araneus.</i> We compiled literature on seasonal changes in braincase size, brain and body mass, supplemented by our own data from Poland, Germany, and the Czech Republic.</p> <p class="Standard">We analysed the effect of geographic and climate variables on the intensity of change and patterns of brain reorganization.</p> <p class="Standard">From summer to winter the braincase height decreased by 13%, followed by 10% regrowth in spring.</p> <p class="Standard">For body mass the changes were -21%/+82%, respectively. Changes increased towards northeast. Several climate variables were correlated with these transformations, confirming a link of the intensity of the changes with environmental conditions. This relationship differed for the decrease vs. regrowth, suggesting that they may have evolved under different selective pressures.</p> <p class="Standard">We found no geographic trends explaining variability in the brain mass changes although they were similar (-21%/+10%) to those of the braincase size. Underlying patterns of change in brain organisation in north-eastern Poland were almost identical to the pattern observed in southern Germany. This indicates that local habitat characteristics may play a more important role in determining brain structure than broad scale geographic conditions.</p> <p>We discuss the techniques and criteria used for studying this phenomenon, as well as its potential presence in other taxa and the importance of distinguishing it from other kinds of seasonal variation.</p>
ScienceDex guides
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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.