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194 results for “island evolution”
GeoTIFF Dataset for: Land-to-sea mapping of the glacial erosion unconformity reveals evolution of the Jasmund Glacitectonic Complex East of Rügen Island (SW Baltic Sea)
<p>This dataset comprises two GeoTIFF files, both with a WGS84 UTM 33 N (EPSG: 32633) projection. The erosional unconformity has a grid size of 100 x 100 metres, while the moraine or raft feature was gridded using a grid size of 20 x 20 metres. The two files were created using marine-multichannel seismic data from the Hübscher et al. (2024) dataset (<a href="https://deref-gmx.net/mail/client/7eMD7NnHVnY/dereferrer/?redirectUrl=https%3A%2F%2Fzenodo.org%2Fdoi%2F10.5281%2Fzenodo.11242567" target="_blank" rel="noopener">10.5281/zenodo.11242567</a>). The dataset was employed in the preparation of Paper by the same authors (<a href="https://doi.org/10.1029/2024GL111603">https://doi.org/10.1029/2024GL111603</a>).</p>
Genome-wide SNP analysis elucidates the evolution of Prunus takesimensis in Ulleung Island: Genetic consequences of anagenetic speciation
<p>Of two major speciation modes of endemic plants on oceanic islands, cladogenesis and anagenesis, the latter has been recently emphasized as an effective mechanism for increasing plant diversity in isolated, ecologically homogeneous insular setting. As a single flowering cherry occurring on Ulleung Island in East Sea, <i>Prunus takesimensis</i> Nakai has been presumed as derived through anagenetic speciation on the Island. Based on morphological similarities, <i>P. sargentii </i>distributed in adjacent continental areas and islands has been suggested as its purported continental progenitor.<i> </i>However, the overall genetic complexity and resultant non-monophylies of closely related flowering cherries have hindered determining their phylogenetic relationships as well as establishing concrete continental progenitor and insular derivative relationship. Based on extensive sampling of wild flowering cherries including <i>P. takesimensis</i> and<i> P. sargentii</i> from Ulleung Island and its adjacent areas, this study inferred the origin and evolution of <i>P. takesimensis</i> using multiple different molecular markers. As the result of phylogeny and population genetic structure analyses based on SNPs detected by MIG-Seq and complementary cpDNA haplotypes, we could provide the extensive and convincing evidence for (1) the monophyly of<i> P. takesimensis</i>,<i> </i>(2) clear genetic differentiation between <i>P. takesimensis</i> (insular derivative) and <i>P. sargentii</i> (continental progenitor), (3) the geographic origin of <i>P. takesimensis</i> via single introduction from source population of <i>P. sargentii</i> in Korean Peninsula, (4) no significant genetic reduction in anagenetically derived insular species <i>P. takesimsnsis</i> compared to continental progenitor <i>P. sargentii</i>, (5) no strong population genetic structuring or geographical patters in the insular derived species, and (6) Mig-seq method as an effective tool to unravel complex evolutionary history of plant groups.</p>
Tempo-spatial evolution of seed plant endemism in Taiwan island
<p><strong>Aim</strong>: In Taiwan island, dispersal through <em>recent</em> <em>land-bridge</em> and <em>oversea</em> after the appearance of proto-Taiwan (<6.5 Ma) is responsible for its biodiversity assembly. While radiations have also been widely reported in mountain systems. So, the tempo-spatial route to the floral hotspot was determined through a meta-analysis of evolution of endemic plants.</p> <p><strong>Location</strong>: Taiwan island and adjacent Asian regions.</p> <p><strong>Taxon</strong>: Seed plants.</p> <p><strong>Methods</strong>: Published dated phylogenies were compiled, and the stem ages were considered as origin times. Ancestral range shift pattern and/or distribution of sister lineage/species were used to determine the speciation mode, in situ origin or dispersal. The distributions of sister taxa were assigned to ten different biogeographical regions. Histograms quantifying the number of different origin mode events within 0.5 Ma bins were constructed. Possibility of long-distance dispersal (LDD) was evaluated.</p> <p><strong>Results</strong>: The 125 sampled endemic plants originated between the late Eocene and late Pleistocene, with 111 species (88.8%) originating after the emergence of proto-Taiwan and 14 species (11.2%) before. Spatially, in situ speciation contributed more to the formation of endemism than dispersal (56.8% vs 43.2%). The mean ages of in situ origin species (1.83 Ma) are significantly younger than that of dispersal (6.34 Ma). The main regions from which dispersal occurred were south-central (n=29) and southeast China (n=28) (referred to as south China), followed by Japan (n=14). High ratio (60.8%) of LDD ability is found.</p> <p><strong>Main</strong> <strong>conclusions</strong>: Spatially, <em>recent land-bridge</em> and <em>oversea</em> dispersal from the adjacent flora of Asia is supported and southwest and southeast China are the most important sources. In situ speciation that may be correlated with mountain uplift, monsoon intensification and Pleistocene climatic fluctuations exert greater contributions. Temporally, floral endemism is predominantly origin after the emergence of proto-Taiwan. Additional investigations with more sophisticated sampling and genetic data are needed in the future.</p>
Data and code from: Morphological evolution in island birds is associated with more terrestrial lifestyles and a lower number of raptors and intra-family competitors
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Data from: Niche evolution during allopatric and sympatric diversification of Aeonium (Crassulaceae) on the Canary Islands
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Adaptive and non-adaptive convergent evolution in feather reflectance of Channel Islands songbirds
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Data from: Genomic evidence for convergent evolution of a key trait underlying divergence in island birds
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Data from: Island biogeography and competition drive rapid venom complexity evolution across rattlesnakes
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The non-dereliction in evolution: Trophic specialisation drives convergence in the radiation of red devil spiders (Araneae: Dysderidae) in the Canary Islands
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Character displacement in the midst of background evolution in island populations of Anolis lizards: a spatiotemporal perspective
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Data from: The ecology and evolution of seed predation by Darwin's finches on Tribulus cistoides on the Galápagos Islands
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Data from: Genetic depletion does not prevent rapid evolution in island-introduced lizards
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Data from: Cranial evolution in the extinct Rodrigues Island owl Otus murivorus (Strigidae), associated with unexpected ecological adaptations
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Genome-wide SNP analysis elucidates the evolution of Prunus takesimensis in Ulleung Island: Genetic consequences of anagenetic speciation
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Delayed adaptive radiation among New Zealand stream fishes: joint estimation of divergence time and trait evolution in a newly delineated island species flock
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Tempo-spatial evolution of seed plant endemism in Taiwan island
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Model-derived backbarrier marsh width from GEOMBEST+ simulations of barrier island-marsh coupled evolution for a range of environmental conditions.
Model-derived backbarrier marsh width from GEOMBEST+ simulations of barrier island-marsh coupled evolution for a range of environmental conditions. The input parameters were varied for a range of 10 different values for each of the flux of overwash (.2-2 m^3/yr), the rate of sea level rise (1-10mm/yr), and the flux of bay sediment (2-20 m^3/yr) Each simulation was for a one meter change in sea level, starting from one of three initial conditions, an empty backbarrier basin, starting with a narrow (400m wide) backbarrier marsh, and starting with a marsh-filled (2000m wide) backbarrier basin. With 10 variants of each parameter input and 3 initial conditions, this results in 3,000 total simulations run. Each row in the spreadsheet contains the input and output values for an individual simulation. The outputs reported are the final backbarrier marsh width, defined as the distance from the backside of the barrier island to the landward most marsh cell, the change in marsh width, and the rate of change in marsh width.
FIGURE 6. A in A new species of Sphenomorphus (Squamata: Scincidae) from Phu Quoc Island Vietnam with a discussion of biogeography and character state evolution in the S stellatus group
FIGURE 6. A. Sphenomorphus stellatus (LSUHC 13483) from Bukit Larut, Perak, Peninsular Malaysia (photograph by L. L. Grismer). B. S. preylangensis from Phnom Chi, Preah Vihear Province, Cambodia (photograph by Neang Thy). C. S. annamiticus (LSUDPC 4854) from Mang Canh Village,Kon Plong districts, Kon Tum Province, Vietnam, Vietnam (photograph by RAN). D. S. praesignus (LSUDPC 8002) from Gunung Tebu, Terengganu, Peninsular Malaysia (photograph by L. L. Grismer).
FIGURE 5 in A new species of Sphenomorphus (Squamata: Scincidae) from Phu Quoc Island Vietnam with a discussion of biogeography and character state evolution in the S stellatus group
FIGURE 5. Holotype of Sphenonorphus phuquocensis sp. nov. (ZMMU R-11518) from Phu Quoc Island, Kien Giang Province, Vietnam.
FIGURE 3 in A new species of Sphenomorphus (Squamata: Scincidae) from Phu Quoc Island Vietnam with a discussion of biogeography and character state evolution in the S stellatus group
FIGURE 3. Maximum clade credibility BEAST tree depicting the relationships of species of the Sphenomorphus stellatus group.
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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.