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517 results for “Floodplain”
Habitat alteration facilitates the dominance of invasive species through disrupting niche partitioning in floodplain wetlands
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Data from: Using river color to predict Amazonian floodplain forest avifauna in the world’s largest black-water river basin
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Why forest fails to recover after repeated wildfires in Amazonian floodplains? Experimental evidence on tree recruitment limitation
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Data from: A test of the umbrella species approach in restored floodplain ponds.
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Data from: Contribution of small isolated habitats in creating refuges from biological invasions along a geomorphological gradient of floodplain waterbodies
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Fish on fire: Shifts in Amazonian fish communities after floodplain forest fires
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Impact of water resources development on connectivity and primary productivity across a tropical river floodplain
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Data for: Widespread wood placement and regrading drive lateral connectivity and reworking of the channel and floodplain in a valley bottom reset to stage 0
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Fig. 3 in Divergence in energy sources for Prochilodus lineatus (Characiformes: Prochilodontidae) in Neotropical floodplains
Fig. 3. δ13C values of food sources (A to D) and of P. lineatus (E). The box-whisker-plots show the lower and upper quartile (25% - 75%), median (□), minimum and maximum (vertical bars). The small letters represent significant differences between the components studied in Paraná, Baía and Ivinheima subsystems of the floodplain of the Upper Paraná River (n = number of samples).
Dataset on the dynamics of shallow wakes in gravel-bed floodplains: results of the field experiments on the Tagliamento River, Italy
<p>Shallow wakes in fluvial environments are hydrodynamic structures produced by in-stream obstructions such as boulders, log jams, patches of riparian and aquatic vegetation. Dynamics of wakes affect a range of biotic and abiotic processes including dispersal of aquatic organisms, mixing of pollutants, sediment deposition and therefore geomorphological changes in rivers. Despite their importance, fundamental mechanisms of shallow wakes development are not fully understood due to lack of experimental data collected in natural environments and free of scaling effects compared to laboratory studies. Present dataset provides explicit information on hydrodynamics of shallow wake flows produced by solid and porous instream obstructions. Controlled field experiments with 30 runs were conducted at the side-branch of the gravel-bed Tagliamento River in the North-Eastern Italy in the period from July till October 2019. During the experimental campaign we varied characteristics of the instream obstructions (their diameter, solid volume fraction, submergence and porosity at the leading edge) and approach velocity. Each run included: (1) measurements of mean velocity and turbulence in the longitudinal (25-30 sampling locations) and lateral transects (8-10 transects with 14 sampling locations) of the constructed experimental channel where model obstructions were placed; (2) detailed surveys of the free surface topography; and (3) flow visualizations and recordings of the wakes patterns using a drone. The dataset is intended to be used for understanding fundamental mechanisms of shallow wakes development in natural fluvial environments, examination of scaling effects and verification of numerical models.</p>
Turbulence Structure and Momentum Exchange in Compound Channel Flows with Shore Ice covered on the Floodplains
<p>This data deposit contains all the datasets needed to draw 9 Figures (4, 8-10, 12-16) in the paper "Turbulence Structure and Momentum Exchange in Compound Channel Flows with Shore Ice covered on the Floodplains", which is now under consideration for potential publication in Water Resources Research. </p>
Fig. 8. Centromochlus orca, MZUEL 10467, 44.8 in A new Centromochlus Kner, 1858 (Siluriformes: Auchenipteridae: Centromochlinae) from the transition between Amazon floodplain and Guiana shield, Brazil
Fig. 8. Centromochlus orca, MZUEL 10467, 44.8 mm SL, adult male, showing modified anal fin. Photo by J. L. Birindelli.
Data from: Strengths and potential pitfalls of hay-transfer for ecological restoration revealed by RAD-seq analysis in floodplain Arabis species
Achieving high intraspecific genetic diversity is a critical goal in ecological restoration as it increases the adaptive potential and long-term resilience of populations. Thus, we investigated genetic diversity within and between pristine sites in a fossil floodplain and compared it to sites restored by hay-transfer between 1997 and 2014. RAD-seq genotyping revealed that the stenoecious flood-plain species Arabis nemorensis is co-occurring with individuals that, based on ploidy, ITS-sequencing and morphology, probably belong to the close relative Arabis sagittata, which has a documented preference for dry calcareous grasslands but has not been reported in floodplain meadows. We show that hay-transfer maintains genetic diversity for both species. Additionally, in A. sagittata, transfer from multiple genetically isolated pristine sites resulted in restored sites with increased diversity and admixed local genotypes. In A. nemorensis, transfer did not create novel admixture dynamics because genetic diversity between pristine sites was less differentiated. Thus, the effects of hay-transfer on genetic diversity also depend on the genetic makeup of the donor communities of each species, especially when local material is mixed. Our results demonstrate the efficiency of hay-transfer for habitat restoration and emphasize the importance of pre-restoration characterization of micro-geographic patterns of intraspecific diversity of the community to guarantee that restoration practices reach their goal, i.e. maximize the adaptive potential of the entire restored plant community. Overlooking these patterns may alter the balance between species in the community. Additionally, our comparison of summary statistics obtained from de novo and reference-based RAD-seq pipelines shows that the genomic impact of restoration can be reliably monitored in species lacking prior genomic knowledge.
FIGURE 3 in Simpsonichthys suzarti sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): a new annual fish from the Rio Pardo floodplains, northeastern Brazil
FIGURE 3. Geographic distribution of species of the S. constanciae group.
FIGURE 1 in Ostracods (Crustacea: Ostracoda) from the floodplain of the Chi River, Mahasarakham Province, Northeast Thailand, with the first record of male Tanycypris siamensis Savatenalinton & Martens, 2009
FIGURE 1. Sampled localities in floodplain of the Chi River, Mahasarakham Province, Thailand.
FIGURE 2 in A new dwarf crayfish (Decapoda: Cambaridae) from floodplain swamps in central Alabama
FIGURE 2. Cambarellus (Pandicambarus) rotatus, n. sp.: Holotype, Hale County, AL, dorsal view.
FIGURE 3 in A new dwarf crayfish (Decapoda: Cambaridae) from floodplain swamps in central Alabama
FIGURE 3. Cambarellus (Pandicambarus) rotatus, n. sp.: Two color morphs, Hale County, AL.
The Congaree River and floodplain measurements
<p>The Data presented here is related to the Congaree River Substrate measurements and characterization of the floodplain deposit (grian size distribution and sedimentation rate). Riverbed layers were measured using Startabox and the floodplain depsoit are sampled by passive sampling method (installing tiles across the floodplain and recover them annually).</p>
FIGURE 1 in Staurosirella paranaensis sp. nov., a new epiphytic freshwater diatom (Bacillariophyceae) from the Paraná River floodplain, Brazil, South America
FIGURE 1. Map of the location of Garças Lagoon in the Upper Paraná River floodplain, Brazil.
Data from: Effects of a major Amazonian river confluence on the distribution of floodplain forest avifauna
<p><strong>Aim</strong>: Although "river color" or water type is an important determinant of Amazonian floodplain biodiversity, the relevance of mixing distinct water types at river confluences to the distribution of terrestrial floodplain fauna has been largely overlooked. We investigated how the influx of a sediment-rich whitewater tributary affects the floodplain forest avifauna along the world's largest blackwater river.</p> <p><strong>Location</strong>: Northwestern Brazilian Amazon</p> <p><strong>Taxon</strong>: Birds</p> <p><strong>Methods</strong>: We sampled floodplain avifauna and retrieved estimates of sediment concentration in the water (the main parameter in river-water classification) at 52 sites, along the Negro (blackwater) and Branco (whitewater) rivers, above and below their confluence. We compared species richness and composition using analyses of variance, ordinations, generalized linear models and indicator species analyses.</p> <p><strong>Results</strong>: Bird species composition on the lower Rio Negro (below the confluence) was distinct from both the upper Negro (above the confluence) and the Branco, and species richness on the Negro increased below the confluence. Typical whitewater bird species occurring on the Branco were found exclusively or predominantly along the left side of the lower Rio Negro, where the Branco's muddy waters seem to be channeled. Overall avian compositional variation among sites was correlated with sediment concentration in the water, a determinant of floodplain forest structure.</p> <p><strong>Main Conclusions</strong>: The influx of the muddy waters of the Rio Branco into the Rio Negro promotes the co-occurrence of bird species that upstream are segregated by river type, increasing species richness at the landscape scale. Rather than just representing a potential blackwater barrier between whitewater systems, the lower Rio Negro comprises a unique biogeographical transition zone, with a mixed avifauna occurring in a mosaic of varied floodplain forest types. Our results suggest that confluences of large rivers of distinct water types represent a significant factor determining species distributional boundaries and geographic patterns of Amazonian floodplain biodiversity.</p>
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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.