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50 results for “Spatial History”
Figure 1. A in A two-species distribution model for parapatric newts, with inferences on their history of spatial replacement
Figure 1. A, the outer range borders of the crested newt, Triturus cristatus (c; southern border shown by continuous line) and the marbled newt, Triturus marmoratus (m; northern and eastern border shown by dashed line) in continental France, after Castanet & Guyetant (1989) and Lescure & De Massary (2012). Departments mentioned in the text are as follows: DS, Deux-Sevres; M, Mayenne; V, Vienne. The Lower Rhône T. cristatus population is indicated by LR. The base map was downloaded from MapsLand (https://www.mapsland.com), under a Creative Commons Attribution-ShareAlike 3.0 Licence. B, the area of T. cristatus–T. marmoratus range overlap in Mercator projection, with the generalized species border as inferred from a two-species distribution model (see Fig. 2). The open circles represent documented species occurrences that strongly contradict the model, for T. cristatus (probability of occurrence, Pc ≤ 0.2, in red) and T. marmoratus (Pc ≥ 0.8, in blue). Large symbols represent multiple observations at close range. The drawings of animals, with T. cristatus at the top and T. marmoratus at the bottom, are by Bas Blankevoort, Naturalis Biodiversity Center.
Figure 4 in A two-species distribution model for parapatric newts, with inferences on their history of spatial replacement
Figure 4. Model of the two-species distribution of Triturus cristatus and Triturus marmoratus for climatic conditions as foreseen for 50 years from now under the CMCC-ESM2_ SSP126 scenario. Results were simplified to a binary representation, with red for T. cristatus (probability of occurrence, Pc> 0.5) and blue for T. marmoratus (Pc <0.5). Grey areas predict the presence of one species or the other, depending on zero or full forestation (for details, see main text). The white line approximates the mutual species border as modelled for the present day (Fig. 2A). Note that the contact zone would have to move at a pace of> 10 km/ year to keep up with the projected change. Three other scenarios yielded even larger contact zone displacements (Supporting Information, Fig. S2).
Figure 3 in A two-species distribution model for parapatric newts, with inferences on their history of spatial replacement
Figure 3. Models of the two-species distribution of Triturus cristatus and Triturus marmoratus for climatic conditions as reconstructed for the Holocene, under the assumption that western Europe would be entirely forested (left panel) or entirely deforested (right panel). Colour key as in Figure 2. Results for nine different scenarios (for details, see main text) were averaged; for scenarios shown individually, see the Supporting Information (Fig. S1). The white line approximates the mutual species border as modelled for the present day in Figure 2.
Data from: Demographic history influences spatial patterns of genetic diversity in recently expanded coyote (Canis latrans) populations
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Data from: Spatially explicit models of dynamic histories: examination of the genetic consequences of Pleistocene glaciation and recent climate change on the American Pika.
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Data from: Spatially varying selection shapes life history clines among populations of Drosophila melanogaster from sub-Saharan Africa
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Data from: Post-Pleistocene demographic history of the North Atlantic endemic Irish moss Chondrus crispus: glacial survival, spatial expansion and gene flow
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Data from: Do spatial scale and life history affect fish-habitat relationships?
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Data from: The influence of landscape, climate, and history on spatial genetic patterns in keystone plants (Azorella) on sub-Antarctic islands
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Spatial connectedness imposes local- and metapopulation-level selection on life history through feedbacks on demography
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Data from: Spatial selection and local adaptation jointly shape life-history evolution during range expansion
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Data from: Environment-dependent variation in selection on life history across small spatial scales
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Data from: Spatial genetic structure in American black bears (Ursus americanus): female philopatry is variable and related to population history
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Life-history stage and the population genetics of the tiger mosquito Aedes albopictus at a fine spatial scale
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History and environment shape spatial genetic variation and predict climate maladaptation in a narrowly distributed serotinous pine, Pinus muricata
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The relative influence of history, climate, topography and vegetation structure on local animal richness varies among taxa and spatial grains
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Foraging and spatial ecology of a polydomous carpenter ant (Camponotus leydigi) in tropical cerrado savanna: A natural history account
<p>Carpenter ants (genus <i>Camponotus</i>) are considered to be predominantly omnivorous, mixing several feeding habits that include predation, scavenging of animal matter, and plant-derived resources. Nitrogen acquisition is crucial for the nutritional ecology of ant colonies since growing larvae require sustainable protein provisioning. Here, we investigate the foraging ecology and the spatial nesting structure of the carpenter ant <i>Camponotus leydigi</i> in Brazilian cerrado savanna. By marking workers from different nests with distinct colors, we revealed that <i>C. leydigi</i> occupies physically separated but socially connected nests (up to 30 m apart), a phenomenon known as polydomy. Observational data on aboveground internest movements in <i>C. leydigi</i> corroborate cooperative exchanges between nest units and confirm several types of social connections, including internest transfer of liquid and solid food, transport of colony members (brood, workers), movement of solitary workers, and internest recruitment. Polydomous <i>C. leydigi</i> allocate foragers throughout 1,700 m<sup>2</sup>, feeding mostly on termites and plant-derived exudates. Influx of exudates is threefold higher compared to solid food. Uric acid pellets excreted by lizards comprise 20% of the solid diet in <i>C. leydigi</i>, a rare quantitative assessment of this peculiar type of nitrogen complementation in ants. Based on video recordings, we hypothesize that nest decentralization in <i>C. leydigi</i> may reduce foraging constraints caused by overt interference by the aggressive ant <i>Ectatomma brunneum</i>, which regularly blocks nest entrances. Our field study enhances the importance of natural history data to clarify selective pressures underlying the evolution of particular behavioral patterns (nutritional and nesting habits) in ants.</p>
Spatially exlicit capture histories for small mammals and predators in a Tasmanian forest system
<p>The following data represents three years of capture-recapure records from individually marked co-occurring small mammals and predators from four spatially independent sites situated in cool temperate forests in southern Tasmania, Australia. Data for small mammals was collected for the swamp rat, <em>Rattus lutreolus</em>, and long-tailed mouse, <em>Pseudomys higginsi</em>, using Elliott small mammal live capture and release traps. Data for predators was collected for the Tasmanian devil, <em>Sarcophilus harrisii</em>, and feral cat, <em>Felis catus</em>, using remote cameras.</p>
Data from: Life history determines biogeographical patterns of soil bacterial communities over multiple spatial scales
The extent to which the distribution of soil bacteria is controlled by local environment versus spatial factors (e.g., dispersal, colonisation limitation, evolutionary events) is poorly understood and widely debated. Our understanding of biogeographic controls in microbial communities is likely hampered by the enormous environmental variability encountered across spatial scales and the broad diversity of microbial life histories. Here we constrained environmental factors (soil chemistry, climate, above-ground plant community) to investigate the specific influence of space, by fitting all other variables first, on bacterial communities in soils over distances from m to 102 km. We found strong evidence for a spatial component to bacterial community structure that varies with scale and organism life history (dispersal and survival ability). Geographic distance had no influence over community structure for organisms known to have survival stages, but the converse was true for organisms thought to be less hardy. Community function (substrate utilisation) was also shown to be highly correlated to community structure, but not to abiotic factors, suggesting non-stochastic determinants of community structure are important Our results support the view that bacterial soil communities are constrained by both edaphic factors and geographic distance, and further show that the relative importance of such constraints depends critically on the taxonomic resolution used to evaluate spatio-temporal patterns of microbial diversity, as well as life-history of the groups being investigated, much as is the case for macro-organisms.
Phylogenomic analyses of the East Asian endemic Abelia (Caprifoliaceae) shed insights into the temporal and spatial diversification history with widespread hybridization
<p><b>• </b><b>Background and Aims </b><i>Abelia</i> (Caprifoliaceae) is a small genus with five species, including one man-made hybrid and several natural hybrids. The genus has a discontinuous distribution in Mainland China, the Taiwan Island, and the Ryukyu Islands, providing a model system to explore mechanisms of species dispersal in the East Asian flora. However, the current phylogenetic relationships within <i>Abelia</i> remain uncertain.</p> <p><b>• Methods</b> In this study, we reconstructed the phylogenetic relationships within <i>Abelia</i> using nuclear loci generated by target enrichment and plastomes from genome skimming. Divergence time estimation, ancestral area reconstruction, and ecological niche modelling (ENM) were used to examine the diversification history of <i>Abelia</i>.</p> <p><b>• Key Results </b>We found extensive cytonuclear discordance across the genus<i>. </i>By integrating lines of evidence from molecular phylogenies, divergence times, and morphology, we propose to merge<i> A. macrotera </i>var.<i> zabelioides </i>into<i> A. uniflora.</i><i> </i>Network analyses suggested that there have been widespread and multiple hybridization events among<i> Abelia</i> species. These hybridization events may have contributed to the speciation mechanism and resulted in a high observed morphological diversity. The diversification of <i>Abelia</i> began in the early Eocene, followed by <i>A. chinensis</i> var. <i>ionandra </i>colonizing the Taiwan Island in the Middle Miocene. The ENM results suggested an expansion of climatically suitable areas during the Last Glacial Maximum and range contraction during the Last Interglacial. Disjunction between the Himalayan-Hengduan Mountain region (HHM) and the Taiwan Island is most likely the consequence of topographic isolation and postglacial contraction.</p> <p><b>• Conclusions </b>We used genomic data to reconstruct the phylogeny of <i>Abelia</i> and found a clear pattern of reticulate evolution in the group.<b> </b>In addition, our results support shrinkage of postglacial range and the heterogeneity of the terrain have led to the disjunction of the Mainland China-Taiwan Island. This study provides important new insights into the speciation process and taxonomy of<i> Abelia</i>.</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.