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57 results for “aquatic environment”
Risks for overwintering eggs of the dragonfly Sympetrum vicinum in aquatic and terrestrial environments
<p>Risk-spreading behaviour is often exhibited by animals as a response to unpredictably variable environments. Using field and laboratory studies, we tested the hypothesis that Sympetrum vicinum dragonflies spread the risks of winter environments by laying eggs across a terrestrial–aquatic gradient. Sympetrum vicinum eggs that overwintered in terrestrial and benthic-limnetic habitats had significantly higher hatching success compared with eggs that overwintered in littoral sites. Low success may have been caused by hypoxia due to excess sediment in the littoral samples in the lab. While hypoxia experienced under winter conditions (4°C) had no negative effect on hatching success, hatching in hypoxic and anoxic water significantly decreased hatching success. Opportunistic egg predation by a winter-active caddisfly significantly decreased egg hatching success. Because S. vicinum eggs have a relatively low supercooling point (− 26.25°C), freezing may not be a significant source of mortality in terrestrial or aquatic sites. By ovipositing in both terrestrial and aquatic environments, female dragonflies may be balancing the unpredictable risks of both the failure to inundate the eggs and egg predation. Our research highlights the potential for biotic interactions during winter to shape the behaviour and life-history of aquatic invertebrates.</p>
Experimental evaluation of genetic variability based on DNA metabarcoding from the aquatic environment: Insights from the Leray COI fragment
<p>Intraspecific genetic variation is important for the assessment of organisms' resistance to changing environments and anthropogenic pressures. Aquatic DNA metabarcoding provides a non-invasive method in biodiversity research, including investigations at the within-species level. Through the analysis of eDNA samples collected from the Peter the Great Gulf of the Japan Sea, in this study we aimed to evaluate the identification of Amplicon Sequence Variants (ASVs) in marine eDNA among abundant species of the <em>Zostera</em> sp. community: <em>Hexagrammos octogrammus</em>, <em>Pholidapus dybowskii</em> (Teleostei: Perciformes), and <em>Pandalus latirostris</em> (Arthropoda: Decapoda). These species were collected from two distant locations to produce mock communities and gather aquatic eDNA both on the community and individual level. Our approach highlights the efficacy of eDNA metabarcoding in capturing haplotypic diversity and the potential for this methodology to track genetic diversity accurately, contributing to conservation efforts and ecosystem management. Additionally, our results elucidate the impact of nuclear mitochondrial DNA segments (NUMTs) on the reliability of metabarcoding data, indicating the necessity for cautious interpretation of such data in ecological studies. Moreover, we analyzed 83 publicly available <em>COI</em> sequence datasets from common groups of multicellular organisms (Mollusca, Echinodermata, Crustacea, Polychaeta, and Actinopterygii). The results reflect the decrease in population diversity that arises from using the metabarcode compared to the <em>COI</em> barcode.</p>
Adapting a propane turkey fryer to manipulate temperature in aquatic environments - Thermal manipulation datasets
<p>There is a growing need to better understand the potential impacts of altered thermal regimes on biodiversity and ecosystem function as mean temperatures, and the likelihood of extreme temperatures, continue to increase. One valuable approach to identify mechanisms and pathways of thermally-driven change at the community level is through the manipulation of temperature in the field. However, where methods exist, they are often costly or unable to produce ecologically relevant changes in temperature. Here, we present a low cost, easily assembled, and readily customizable thermal manipulation system for tide pools or other small bodies of water – the Seaside Array for Understanding Thermal Effects (SAUTE) – and demonstrate its ability to effectively alter the temperature in tide pools. During our three-hour heating manipulation, heated pools reached temperatures 4°C warmer than unmanipulated pools. During the cooling manipulation, cooled pools remained on average 1.8°C cooler than control pools. The novel SAUTE system can be used to alter the temperature of tide pools in situ. Further, it could be modified to heat other environments such as freshwater vernal pools and settlement tiles in a realistic and meaningful manner, serving as a useful tool to test questions surrounding the relationship between climate warming, thermal variability, and ecological processes in natural aquatic communities.</p>
Uncovering bacterial hosts of class 1 integrons in an urban coastal aquatic environment with a single-cell fusion-polymerase chain reaction technology
<p>Horizontal gene transfer (HGT) is a key driver of bacterial evolution via transmission of genetic materials across taxa. Class 1 integrons are genetic elements that correlate strongly with anthropogenic pollution and contribute to the spread of antimicrobial resistance (AMR) genes via HGT. Despite their significance to human health, there is a shortage of robust, culture-free surveillance technologies for identifying uncultivated environmental taxa that harbour class 1 integrons. We developed a modified version of epicPCR (emulsion, paired isolation and concatenation PCR) that links class 1 integrons amplified from single bacterial cells to taxonomic markers from the same cells in emulsified aqueous droplets. Using this single-cell genomic approach and Nanopore sequencing, we successfully assigned class 1 integron gene cassette arrays containing mostly AMR genes to their hosts in coastal water samples that were affected by pollution. Our work presents the first application of epicPCR for targeting variable, multi-gene loci of interest. We also identified the <em>Rhizobacter</em> genus as novel hosts of class 1 integrons. These findings establish epicPCR as a powerful tool for linking taxa to class 1 integrons in environmental bacterial communities and offer the potential to direct mitigation efforts towards hotspots of class 1 integron-mediated dissemination of AMR.</p>
Interplay between native plant performance and environment shapes resistance to aquatic plant invasion
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Data from: Behavioural and fitness effects of translocation to a novel environment: whole-lake experiments in two aquatic top predators
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Uncovering bacterial hosts of class 1 integrons in an urban coastal aquatic environment with a single-cell fusion-polymerase chain reaction technology
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Hydrological connectivity and local environment alternately drive spatial structure of floodplain aquatic community across season
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Abiotic factors that prompt major ecological transitions: are fish on land to escape an intolerable aquatic environment?
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Adapting a propane turkey fryer to manipulate temperature in aquatic environments - Thermal manipulation datasets
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Experimental evaluation of genetic variability based on DNA metabarcoding from the aquatic environment: Insights from the Leray COI fragment
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Risks for overwintering eggs of the dragonfly Sympetrum vicinum in aquatic and terrestrial environments
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Oxygen sensitivity of denitrification in the aquatic environments
<p>This dataset includes new measurements of denitrification (nitrate reduction to nitrite, nitrite reduction to N2O and N2) in response to manipulated oxygen concentration changes in Chesapeake Bay. Observations of oxygen sensitivity of denitrification in other aquatic environments (e.g., open ocean oxygen minimum zones) are compiled from previous studies for comparison. </p> <p>Please see the paper below for details:</p> <p>Tang, W., Fortin, S. G., Intrator, N., Lee, J. A., Kunes, M. A., Jayakumar, A., ... & Ward, B. B. (2025). Similar Oxygen Sensitivities of Different Steps of Denitrification in Estuarine Waters. <em>Environmental Science & Technology</em>. <span>59 (</span><span>14),</span><span> 7165–7175. </span><a title="DOI URL" href="https://doi.org/10.1021/acs.est.5c02248">https://doi.org/10.1021/acs.est.5c02248</a></p>
Ecological impacts of photosynthetic light harvesting in changing aquatic environments: A systematic literature map
<p>Underwater light is spatially as well as temporally variable and directly affects phytoplankton growth and competition. Here we systematically (following the guidelines of PRISMA-EcoEvo) searched and screened the published literature resulting in 640 individual articles. We mapped the conducted research for the objectives of (1) phytoplankton fundamental responses to light, (2) effects of light on the competition between phytoplankton species and (3) effects of climate change induced changes in the light availability in aquatic ecosystems. Among the fundamental responses of phytoplankton to light, the effects of light intensity (quantity, as measure of total photon or energy flux) were investigated in most identified studies. The effects of the light spectrum (quality) that via species-specific light absorbance result in direct consequences on species competition emerged more recently. Complexity in competition arises due to variability and fluctuations in light which effects are sparsely investigated on community level. Predictions regarding future climate change scenarios included changes in in stratification and mixing, lake and coastal ocean darkening, UV radiation, ice melting as well as light pollution which affect the underwater light-climate. Generalization of consequences is difficult due to a high variability, interactions of consequences as well as a lack in sustained timeseries and holistic approaches. Nevertheless, our systematic literature map, and the identified articles within, provide a comprehensive overview and shall guide prospective research.</p>
Phenotypic Plasticity Structure of Metasequoia glyptostroboides (Taxodiaceae) Fine Adventitious Roots Adapt to Aquatic and Terrestrial Environments
<p>Supplement 1. Phellogen close to the remnant exodermis and under lysigenous primary phloem. Match to Fig. 2C, D, secondary xylem, vascular cambium (below arrowhead), phellogen (arrows), lysigenous primary phloem (black arrow), phloem aerenchyma, dilated parenchyma (*), phloem fibers, remnant exodermis (ex), staining: TBO; scale bars = 50 μm;</p> <p> </p> <p>Supplement 2. Phellogen under lysigenous primary phloem. Match to Fig. 2C, D, secondary xylem, vascular cambium (below arrow), phellogen (arrows), lysigenous primary phloem (black arrow), cortical aerenchyma, dilated parenchyma (*), phloem fibers, remnant exodermis (ex), staining: TBO; scale bars = 50 μm;</p>
AquaXAI: Visual and Textual Dataset for XAI in Aquatic Environments
<p>This Dataset is for the publication: "Interactive Simulator Framework for XAI Applications in Aquatic Environments"<br><br>AquaXAI is a synthetic dataset aiming to explain boat skippers' actions in aquatic environments, using Unity Simulator.</p> <p>The dataset consists of:</p> <p>Image: RGB + Semantic Segmentation + Instance Segmentation + Bounding Box</p> <p>Textual Explanations: Action + Explanation</p>
Video Data: Spatiotemporal visual statistics of aquatic environments in the natural habitats of zebrafish
<p>Video dataset accompanying " Spatiotemporal visual statistics of aquatic environments in the natural habitats of zebrafish." See accompanying <a href="https://github.com/eacooper/ZebrafishAquaticVisualStatsCode">Github repository</a> for more documentation and analysis code.</p>
Ecological impacts of photosynthetic light harvesting in changing aquatic environments: A systematic literature map
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Data from: Oxygen limitation at the larval stage and the evolution of maternal investment per offspring in aquatic environments
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Data from: Artificial agri-environment scheme ponds do not replicate natural environments despite higher aquatic and terrestrial invertebrate richness and abundance
<p class="MsoNoSpacing">1. Farmland ponds are a highly threatened freshwater habitat which has undergone dramatic losses during the last 200 years due to land drainage schemes and agricultural intensification. Agri-environment schemes (AES) incentivise farmers to adopt farming methods to benefit biodiversity, yet there are a paucity of data evaluating the success of artificially created AES ponds as analogues of natural ponds in an attempt to recreate lost environments.</p> <p class="MsoNoSpacing">2. We examined variation in environmental parameters and aquatic and terrestrial invertebrate communities between 38 natural ponds and 91 artificial ponds that were created in south-west Ireland (<i>n</i>=129).</p> <p class="MsoNoSpacing">3. Artificial ponds in agricultural grassland did not replicate natural ponds in adjacent semi-natural habitats differing significantly in size, pH, conductivity, productivity (indicated by submerged and emergent plant cover including algae) and surrounding vegetation structure i.e. sward height. These differences significantly influenced aquatic and terrestrial invertebrate community structure with a suite of indicator taxa in both natural and artificial ponds.</p> <p class="MsoNoSpacing">4. The conservation value of artificial ponds in agricultural grasslands should not be underestimated as they had 43% higher aquatic species richness and 33% higher aquatic species abundance than natural ponds in adjacent semi-natural habitats.</p> <p class="MsoNoSpacing"><i>5. Synthesis and applications</i>. We demonstrate that artificial agri-environment scheme ponds created in agricultural grasslands, whilst not direct analogues of natural ponds in adjacent semi-natural habitats, do fulfil a role in preserving high local biodiversity albeit representing a different community of species. Creation of ponds in farmland as well as in adjacent natural habitats could provide a wider range of environmental conditions and richer associated macroinvertebrate communities, increasing landscape connectivity and further enhancing regional biodiversity.</p>
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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.