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376
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376 results for “local scales”
Data from: Fine-scale genetic structure in the orchid Gymnadenia conopsea is not associated with local density of flowering plants
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Landscape-scale dynamics of a threatened species respond to local-scale conservation management
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Data from: Analysis of local-scale background concentrations of methane and other gas-phase species in the Marcellus Shale
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Helicopter parenting: Local-scale environment determines hiding and supervision in neonatal ungulates
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Scale-dependent signatures of local adaptation in a widespread foundation tree species
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Data from: Local range boundaries versus large-scale tradeoffs: climatic and competitive constraints on tree growth
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Data from: Ecosystem multifunctionality is promoted by organic farming and hedgerows at the local scale but not at the landscape scale
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Data from: Cross-scale effects of habitat fragmentation on local biodiversity and ecosystem multifunctionality in a fragmented grassland landscape
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Local sub-population dynamics of a Central European Grey Partridge meta-population support a large-scale conservation approach to halt its ongoing decline
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Case study data of the paper: A methodological guide to observe local-scale geodiversity for biodiversity research and management
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Genomic differentiation and local adaptation on a microgeographic scale in a resident songbird
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Fine-scale spatial genetic structure in a locally abundant native bunchgrass (Achnatherum thurberianum) including distinct lineages revealed within seed transfer zones
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Regional and fine-scale local adaptation in salinity tolerance in Daphnia inhabiting contrasting clusters of inland saline waters
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Dataset for: Indirect nitrous oxide emission factors of fluvial networks can be predicted by dissolved organic carbon and nitrate from local to global scales
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Datasets from: Local- and landscape-scale drivers of terrestrial herbaceous plant diversity along a tropical rainfall gradient in Western Ghats, India
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The interplay between local and landscape scales on the density of pond-dwelling anurans in subtropical grasslands
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Data from: Foundation species promote local adaptation and fine-scale distribution of herbaceous plants
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Data from: Contrasting scales of local persistence between monsoonal and arid biomes in closely related, low-dispersal vertebrates
Aim: Focussing on pairs of sister species across three genera of scincid lizards, we use genomic evidence to test for larger-scale, late-Pleistocene changes in distributions of lizards in the Australian Arid Zone (AZ) than in the adjacent Monsoonal Tropics (MT). Location: Northern and central Australia. Taxon: Scincidae: Squamata. Methods: We sequenced ~ 2000 nuclear exons and one mitochondrial gene across the distributions of species with primarily MT or AZ distributions from three genera of lizards. Using phylogenetic analysis and population structure analyses we identified major phylogeographic lineages and then compared the spatial scale of structuring and tested for recent demographic expansions. Results: Two genera in particular, Proablepharus and Morethia, showed deeper and more geographically localised phylogeographic diversity in the MT than the AZ. In the MT, localised diversity was prevalent in the relatively mesic regions. By contrast, the AZ was characterised by widespread and often genetically uniform lineages and a higher proportion of these had signals of recent population expansion. Main conclusions: Consistent with other recent, but mostly less genetically extensive studies, our results point to deeper and more localised diversity in MT compared to AZ. In turn, this suggests higher local persistence in more mesic and topographically diverse biome through the late Quaternary climate fluctuations. For the AZ, geographically extensive range expansions have likely contributed to the low spatial turnover of this exceptionally rich lizard fauna.
Scripts and files for "Small-scale population divergence is driven by local larval environment in a temperate amphibian"
<p>Genomic variation within and among populations is shaped by the interplay between natural selection and the effects of genetic drift and gene flow. Adaptive divergence can be found in small scale natural systems even when population sizes are small and the potential for gene flow is high, suggesting that local environments exert selection pressures strong enough to counteract the opposing effects of drift and gene flow. Here, we investigated genomic differentiation in nine moor frog (<i>Rana arvalis</i>) populations in a small-scale network of local wetlands using 16 707 ddRAD-seq SNPs, relating levels of differentiation with local environments as well as with properties of the surrounding landscape. We characterized population structure and differentiation, and partitioned the effects of geographic distance, local larval environment and landscape features on total genomic variation. We also conducted gene-environment association studies using univariate and multivariate approaches. We found small-scale population structure corresponding to 6-8 clusters. Local larval environment was the most influential component explaining 2.3% of the total genetic variation followed by landscape features (1.8%) and geographic distance (0.8%), indicative of isolation-by-environment, -by-landscape and -by-distance, respectively. We identified 1000 potential candidate SNPs putatively under divergent selection mediated by the local larval environment. The candidate SNPs were involved in, among other biological functions, immune system function and development. Our results suggest that small scale environmental differences can exert selection pressures strong enough to counteract homogenizing effects of gene flow and drift in this small-scale system leading to observable population differentiation.</p>
An invasive grass species has both local and broad-scale impacts on diversity: Potential mechanisms and implications
<p>Questions</p> <p>The impact of invasive plant species on native diversity varies with spatial scale, with some invaders leading to broad-scale diversity declines and others only local declines. These discrepancies may reflect the invaders capacity to reduce niche opportunities across spatial scales which can be associated with their functional traits. We investigated impact-scale relationships and trait-based mechanisms, in areas invaded by the exotic perennial grass species, <i>Bothriochloa pertusa</i>. We examine root traits specifically, as belowground competition was considered particularly important to the success of this species.</p> <p>Location</p> <p>Grassy 'ironbark' woodlands of eastern Queensland, Australia</p> <p>Methods</p> <p>We examined plots with varying degrees of invasion by <i>B. pertusa,</i> at multiple spatial scales (up to 1000 m<sup>2</sup>) and analysed changes to the species area relationships (SARs) with increasing invader cover. Changes to SARs were assessed in relation to the invaders effect on rare (low-patch-occupancy) and common species in the community. In a separate analysis within the same habitat we collected root cores across a gradient of invader cover and analysed changes to community root traits that were considered important correlates of competition for space and nutrients.</p> <p>Results</p> <p>Invasion-induced reductions in diversity were pervasive at all scales investigated, and this was associated with a proportionally greater effect on rare species in the community. In the separate root analysis, changes in community root traits with increasing invader cover were potentially indicative of more intense competition for resources rather than space.</p> <p>Conclusions</p> <p>The observed regional-scale dominance of <i>B. pertusa</i> and associated declines in diversity warrant serious concern for the conservation of native plant communities and species in a region already at risk from other anthropogenic threats. Intense competition for belowground resources is likely a contributing mechanism to the success of <i>B. pertusa</i> in this study system. Experimental examination of this and other mechanisms would help to validate these findings.</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.