Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
1,566
datasets available to search
ShareScore release 0.9.0
Dataset results
1,566 results for “declining”
Genomic footprints of (pre) colonialism: Population declines in urban and forest túngara frogs coincident with historical human activity
<p>Urbanisation is rapidly altering ecosystems, leading to profound biodiversity loss. To mitigate these effects, we need a better understanding of how urbanisation impacts dispersal and reproduction. Two contrasting population demographic models have been proposed that predict that urbanisation either promotes (facilitation model) or constrains (fragmentation model) gene flow and genetic diversity. Which of these models prevails likely depends on the strength of selection on specific phenotypic traits that influence dispersal, survival, or reproduction. Here, we a priori examined the genomic impact of urbanisation on the Neotropical túngara frog (<em>Engystomops pustulosu</em>s), a species known to adapt its reproductive traits to urban selective pressures. Using whole-genome resequencing for multiple urban and forest populations we examined genomic diversity, population connectivity and demographic history. Contrary to both the fragmentation and facilitation models, urban populations did not exhibit substantial changes in genomic diversity or differentiation compared to forest populations, and genomic variation was best explained by geographic distance rather than environmental factors. Adopting an a posteriori approach, we additionally found both urban and forest populations to have undergone population declines. The timing of these declines appears to coincide with extensive human activity around the Panama Canal during the last few centuries rather than recent urbanisation. Our study highlights the long-lasting legacy of past anthropogenic disturbances in the genome and the importance of considering the historical context in urban evolution studies as anthropogenic effects may be extensive and impact non-urban areas on both recent and older timescales. </p>
Data and code associated with the manuscript: Three centuries of snowpack decline at an Alpine pass revealed by cosmogenic paleothermometry and luminescence photochronometry
<p>This dataset contains the data as well as the Matlab codes needed to reproduce the results in the following manuscript:</p> <p>Guralnik, B., Tremblay, M.M., Phillips, M., Sellwood, E.L., Gribenski, N., Presl, R., Haberkorn, A., Sohbati, R., Shuster, D.L., Valla, P., Jain, M., Schindler, K., Wallinga, J., and Hippe, K., Three centuries of snowpack decline at an Alpine pass revealed by cosmogenic paleothermometry and luminescence photochronometry. </p> <p>Briefly, this manuscript presents novel datasets of cosmogenic paleothermometery (quartz He-3) and luminescence photochronometery (feldspar IRSL), whose pairing constrains the temperature and insolation history of three bedrock outcrops at the Gotthard Pass in Switzerland over the last ~15,000 years. </p> <p>The data include (1) measured concentrations of cosmogenic Be-10, C-14, and He-3 in quartz, (2) stepwise degassing experiments on proton irradiated quartz grains that are used to determine sample-specific He-3 diffusion kinetics, (3) best-fit multiple diffusion domain (MDD) models to the proton-induced He-3 diffusion experiments, (5) Natural radioactivity and calculated feldspar infrared stimulated luminescence (ISRL) dose rates, (6) feldspar ISRL depth profiles, and (7) high-resolution microrelief surface scans and analysis.</p> <p>The code includes scripts necessary to reproduce the figures and results associated with this manuscript. The code is organized by figure into subfolders, and any data needed to reproduce a figure should be included in that folder. All original codes are distributed under the GNU General Public License. Codes written by others and utilized here are redistributed under their original license according to the terms and conditions therein, and are provided in the folder 'external.'</p> <p>Any questions about original Matlab codes published here should be directed to Benny Guralnik, benny.guralnik@gmail.com.</p>
Data for "Disrupted connectivity within a metapopulation of a wind-pollinated declining conifer Taxus baccata L."
<p>A spreadsheet contains microsatellite genotypes and population coordinates necessary for estimating seed and pollen migration rates. In addition, a spreadsheet contains detailed individual data necessary for parentage analysis.</p> <p>For more details, see:</p> <p>Chybicki IJ, Robledo-Arnuncio JJ, Bodziarczyk J, Widlak M, Meyza, K, Oleksa A, Ulaszewski B (2024) Disrupted connectivity within a metapopulation of a wind-pollinated declining conifer, Taxus baccata L. Forest Ecosystems 100240 (https://www.sciencedirect.com/science/article/pii/S2197562024000769)</p>
Testing alternative hypotheses for the decline of cichlid fish in Lake Victoria using fish fossils time series from sediment cores
<p>Lake Victoria is well known for its high diversity of endemic fish species that provide livelihoods for millions of people. The lake garnered widespread attention during the twentieth century as major environmental and ecological changes modified the fish community with the extinction of ~40% of endemic cichlid species by the 1980s. Suggested causal factors include anthropogenic eutrophication, fishing, and introduced non-native species but their relative importance remains unresolved because monitoring data started in the 1970s when changes were already underway. Here, for the first time, we reconstruct two time series, covering the last ~200 years, of fish assemblage using fish teeth preserved in lake sediments. Two sediment cores Lake Victoria (Mwanza Gulf), were subsampled continuously at intra-decadal resolution, and teeth were identified to major taxa: Cyprinoidea, Haplochromini, Mochokidae, and Oreochromini. None of the fossils could be confidently assigned to non-native Nile Perch. Our data show significant decreases in haplochromine and oreochromine cichlid fish abundances began long before Nile Perch's arrival, while cyprinoids have generally been increasing. Our study is the first to reconstruct a time series of fish assemblage in Lake Victoria extending deeper back in time than the past 50 years, helping shed light on processes underlying Lake Victoria's biodiversity loss.</p>
The effect of experimental pollinator decline on pollinator-mediated selection on floral traits
<p>Human-mediated environmental change, by reducing mean fitness, is hypothesized to strengthen selection on traits that mediate interactions among species. For example, human-mediated declines in pollinator populations are hypothesized to reduce mean seed production by increasing the magnitude of pollen limitation and thus strengthen pollinator-mediated selection on floral traits that increase pollinator attraction or pollen transfer efficiency. To test this hypothesis, we measured two female fitness components and six floral traits of <em>Lobelia siphilitica</em> plants exposed to supplemental hand-pollination, ambient open-pollination, or reduced open-pollination treatments. The reduced treatment simulated pollinator decline, while the supplemental treatment was used to estimate pollen limitation and pollinator-mediated selection. We found that plants in the reduced pollination treatment were significantly pollen-limited, resulting in pollinator-mediated selection for taller inflorescences and more vibrant petals, both traits that could increase pollinator attraction. This contrasts with plants in the ambient pollination treatment, where reproduction was not pollen-limited and there was no significant pollinator-mediated selection on any floral trait. Our results support the hypothesis that human-mediated environmental change can strengthen the selection on traits of interacting species and suggest that these traits have the potential to evolve in response to changing environments.</p>
Concrete habitat: Impervious surface in nest vicinity is associated with avian fitness decline in two urban adapters
<p>The conversion of natural habitats to impervious surfaces in cities affects biotic and abiotic attributes of urban ecosystems. Detailed information on the gradual influence of impervious surfaces on reproductive success, however, is lacking. Using five years of nestbox-breeding great tit and blue tit breeding data collected across various habitat types within and outside a Central-Eastern European capital city, we quantified the impact of impervious surfaces on avian reproductive success. Impervious surfaces strongly and negatively covaried with the number of fledged young in both species: a 50% increase in impervious surface resulted in 2.93 (95% CI: -4.27; -1.58) fewer blue tit offspring fledging the nest, and 3.51 (95% CI: -4.79; -2.23) fewer great tit offspring fledging the nest, thus halving the reproductive output of two widespread urban species. These results provide benchmark values of avian productivity for ecologists and urban policy makers, and for the management of urban areas.</p>
Dataset for 'Global declines in net primary production underestimated by climate models'
<p>The dataset provided here is to be used in conjuction with the JuPyTer notebook provided here: https://github.com/tjryankeogh/global_npp_trends/tree/main</p> <p> </p> <p>Download the file and uncompress in a root directory where there is a folder 'FIGURES'. When running the notebook make sure to change this root directory when importing packages.</p> <p> </p>
Data and code for: "Global Sampling Decline Erodes Science Potential of Natural History Collections"
<p># GBIF Specimen Data Analysis and Forecasting<br><br>## Version 2 - modified date ranges for figures 1 and 2 in response to reviewer comments</p> <p>This repository contains the code and data for analysing and forecasting trends in Global Biodiversity Information Facility (GBIF) specimen records across three major taxonomic groups: Chordata, Arthropoda, and Plantae. <br>The analysis pipeline includes data cleaning, anomaly detection, primary analyses, and forecasting based on historical database snapshots.</p> <p>These scripts and data correspond to analyses in the following manuscript:</p> <p>Global Sampling Decline Erodes Science Potential of Natural History Collections</p> <p>Authors:<br>Owen Forbes<br>Andrew G. Young<br>Peter H. Thrall</p> <p><br>## Repository Structure</p> <p>The repository consists of three main Quarto (.qmd) scripts and associated data files:</p> <p>1. `1_DataCleaning_Forbes-et-al_2025.qmd`: Data cleaning and anomaly detection<br>2. `2_PrimaryAnalyses_Forbes-et-al_2025.qmd`: Primary analyses and visualisation<br>3. `3_SnapshotsForecasting_Forbes-et-al_2025.qmd`: Historical snapshot analysis and forecasting</p> <p>## Requirements</p> <p>- R (version 4.3.2 or later)<br>- Required R packages:<br> - tidyverse (v2.0.0) - for data manipulation and visualization<br> - readr (v2.1.5) - for reading CSV/TSV files<br> - ggplot2 (v3.4.0 or v3.5.0) - for creating visualizations<br> - rnaturalearth (v1.0.1) - for accessing natural earth map data<br> - dplyr (v1.1.0 or v1.1.4) - for data manipulation<br> - countrycode (v1.6.0) - for converting country names and codes<br> - spdep (v1.3-3) - for spatial dependence modeling<br> - sp (v1.6-0 or v2.1-3) - for spatial data manipulation<br> - sf (v1.0-15 or v1.0-16) - for simple features access<br> - data.table (v1.14.8) - for fast aggregation of large data<br> - lubridate (v1.9.2) - for date-time manipulation<br> - viridis (v0.6.3) - for color palettes<br> - gridExtra (v2.3) - for arranging multiple plots<br> - ggpubr (v0.6.0) - for creating publication-ready plots<br> - zoo (v1.8-12) - for time series, including moving averages<br> - scales (v1.3.0) - for graphical scales<br> - forecast (v8.22.0) - for ARIMA forecast models<br> - purrr (v1.0.2) - for mapping custom forecast function onto each dataset<br> - arrow - for working with parquet files</p> <p>Install these packages before running the scripts.</p> <p>## How to Use</p> <p>1. Download this repository to your local machine.<br>2. Set your working directory to the location of the scripts.<br>3. Download raw datasets from GBIF (as required)<br>4. Ensure all required R packages are installed.<br>5. Run the scripts in RStudio or your preferred R environment.</p> <p>### Data Cleaning (`1_DataCleaning_Forbes-et-al_2025.qmd`)</p> <p>This script cleans the raw GBIF data and identifies anomalies. It produces files containing indexes of dataset records to be removed, which are used in subsequent analyses.</p> <p>**Note**: The raw GBIF exported datasets for contemporary records are not included in this repository due to file size constraints. Download them from the GBIF links provided in the script and place them in the `data/` directory.</p> <p>### Primary Analyses (`2_PrimaryAnalyses_Forbes-et-al_2025.qmd`)</p> <p>This script performs the main analyses and generates visualisations. It uses the outputs from the data cleaning script to filter anomalous records.</p> <p>To reproduce all analysis stages from the original raw .csv files:<br>- Start at the chunks labelled "DATA LOAD AND FILTERING".<br>- Run the pipeline for non-spatial analyses before spatial analyses.<br>- Due to memory constraints, it's recommended to run analyses for one taxonomic group and one analysis stream at a time.</p> <p>To skip to plot generation:<br>- Navigate to sections tagged as "@! SKIP TO PLOTTING !@".<br>- Ensure all required analysis output files are in the `data/` directory.</p> <p>### Forecasting (`3_SnapshotsForecasting_Forbes-et-al_2025.qmd`)</p> <p>This script analyses historical GBIF database snapshots and forecasts future growth. It uses the cleaned snapshot data produced by the data cleaning script.</p> <p>## Data Files</p> <p>### GBIF Exports - Raw Data (not included on Zenodo due to file size, please download directly from GBIF)<br>- `0016915-240425142415019.csv` for Chordata - https://www.gbif.org/occurrence/download/0016915-240425142415019</p> <p>- `0016914-240425142415019.csv` for Plantae - https://www.gbif.org/occurrence/download/0016914-240425142415019 </p> <p>- `0016913-240425142415019.csv` for Arthropoda - https://www.gbif.org/occurrence/download/0016913-240425142415019</p> <p>### Included Data Files</p> <p>#### Raw Data<br>- `GBIF_snapshots.parquet` # Historical snapshots RAW dataset (arrow/parquet format)<br>- `GBIF_integer_to_datasetKey.tsv` # Mapping old dataset IDs onto new datasetKey field</p> <p>#### Contemporary Datasets - data cleaning outputs<br>- `chordata_counts_to_highlight_030724` # List of anomalous Chordata dataset + year indexes to filter<br>- `arthropoda_counts_to_highlight_OG_030724` # List of anomalous Arthropoda dataset + year indexes to filter<br>- `plantae_counts_to_highlight_030724` # List of anomalous Plantae dataset + year indexes to filter</p> <p>#### Cleaned Snapshots<br>- `plantae_snapshots_filter_threshold_IN_040924` # Cleaned Plantae snapshots<br>- `arthropoda_snapshots_filter_threshold_IN_040924` # Cleaned Arthropoda snapshots<br>- `chordata_snapshots_filter_threshold_IN_040924` # Cleaned Chordata snapshots<br>- `gbif_dates_df_anomaly_filtered_090724` # Anomaly-filtered snapshots (combined dataset)<br>- `gbif_dates_df_anomalies_highlighted_090724` # Anomalies highlighted snapshots (combined dataset)</p> <p>#### Analysis Outputs - for skipping straight to plot/figure generation<br>- `arthropoda_specimens_per_year_080724` # Arthropoda specimen counts per year<br>- `arthropoda_unique_species_per_year_080724` # Arthropoda unique species counts per year<br>- `arthropoda_grid_counts_080724` # Arthropoda grid counts<br>- `chordata_specimens_per_year_080724` # Chordata specimen counts per year<br>- `chordata_unique_species_per_year_080724` # Chordata unique species counts per year<br>- `chordata_grid_counts_080724` # Chordata grid counts<br>- `plantae_specimens_per_year_080724` # Plantae specimen counts per year<br>- `plantae_unique_species_per_year_080724` # Plantae unique species counts per year<br>- `plantae_grid_counts_080724` # Plantae grid counts<br>- `chordata_continent_count_080724` # Chordata continent-specific counts<br>- `arthropoda_continent_count_080724` # Arthropoda continent-specific counts<br>- `plantae_continent_count_080724` # Plantae continent-specific counts</p> <p> </p>
Data from: Telomere length declines with age, but relates to immune function independent of age in a wild passerine
<p><span>Telomere length (TL) shortens with age but telomere dynamics can relate to fitness components independent of age. Immune function often relates to such fitness components and can also interact with telomeres. Studying the link between TL and immune function may therefore help us understand telomere-fitness associations. We assessed the relationships between erythrocyte TL and four immune indices (haptoglobin, natural antibodies, complement activity, heterophil-lymphocyte ratio; n=477-589), from known-aged individuals of a wild passerine (<em>Malurus coronatus</em>). As expected, we find that TL significantly declined with age. To verify whether associations between TL and immune function were independent of parallel age-related changes (e.g. immunosenescence), we statistically controlled for sampling age, and used within-subject centring of TL to separate relationships within or between individuals. We found that TL positively predicted complement activity at the between-individual level (individuals with longer average TL had higher complement activity), but no other immune indices. In contrast, age predicted levels of natural antibodies and heterophil-lymphocyte ratio, allowing inference that respective associations between TL and age with immune indices are independent. Any links existing between TL and fitness are therefore unlikely to be strongly mediated by innate immune function, while TL and immune indices appear independent expressions of individual heterogeneity.</span></p>
Data from: Evaluating staging habitat quality to advance the conservation of a declining migratory shorebird, Red Knot Calidris canutus
<p>Identifying where and when population "bottlenecks" occur is critical to the conservation of migratory species, many of which are declining precipitously worldwide. Especially challenging is the evaluation of changes to staging sites. These sites are indispensable links in the migratory cycle but are typically used only briefly.</p> <p>We devised a field-based approach to assess the quality and carrying capacity of a critical staging site in Nanpu, China, for the declining, migratory Red Knot (Calidris canutus rogersi & C. c. piersmai) during northward migration. The Nanpu tidal flat supports 50,000-100,000 Red Knots annually, and while there, the knots feed almost exclusively on the bivalve Potamocorbula laevis. We simultaneously monitored changes in the abundance of Red Knots and bivalves across the entire staging site in spring 2018.</p> <p>After taking into account potential competition with other shorebird species, we estimated that the Nanpu tidal flat was capable of supporting approximately 1.46-1.70 times the current observed level of usage of the site by Red Knots, and therefore is operating below, but close, to carrying capacity with respect to food resources for Red Knots. This result suggests that any further development of this site could harm the EAAF Red Knot population.</p> <p>Synthesis and applications: Quantitative monitoring and evaluation of habitat quality of staging sites are essential to successfully conserve declining migratory species. In particular, researchers and conservation practitioners should incorporate both population size and staging duration in order to more accurately assess the importance of different sites and to quantify how changes in staging habitat quality may translate into changes in migrant population sizes at both local and global scales.</p>
Rare and declining bee species are key to consistent pollination of wildflowers and crops across large spatial scales
<p>Biodiversity promotes ecosystem function in experiments, but it remains uncertain how biodiversity loss affects function in larger-scale natural ecosystems, where rare and declining species which are likely to be lost and function needs to be maintained across space and time. Here we explore the importance of rare and declining bee species to the pollination of three wildflowers and three crops using large-scale (72 sites across 5,000 km2), multi-year datasets. Half (82/164) bee species were rare or declining, but these species provided ~15% of overall pollination. To determine the number of species important to ecosystem function, we used two methods of 'scaling up', both of which have previously been used for biodiversity-function analysis. First, we summed bee species' contributions to pollination across space and time and then found the minimum set of species needed to provide a threshold level of function across all sites; according to this method, effectively no rare and declining bee species were important to pollination. Second, we account for the "insurance value" of biodiversity by finding the minimum set of bee species needed to simultaneously provide a threshold level of function at each site in each year. The second method leads to the conclusion that 25 rare and eight declining bee species (36% and 53% of all rare and declining bee species, respectively) are important. Our findings provide some of the strongest evidence yet for the importance of rare and declining species, thereby providing a more direct link between real-world biodiversity loss and ecosystem function.</p>
Differential changes in lifecycle-event phenology provide a window into regional population declines
<p class="MsoNormal"><span>Climate change affects the phenology of annual lifecycle events of organisms, such as reproduction and migration. Shifts in the timing of these events could have important population implications directly, or provide information about the mechanisms driving population trajectories, especially if they differ between lifecycle event. We examine if such shifts occur in a declining migratory passerine bird (Willow Warbler, <em>Phylloscopus trochilus</em>), which exhibits latitudinally diverging population trajectories. We find evidence of phenological shifts in breeding initiation, breeding progression and moult that differ across geographic and spring temperature gradients. Moult initiation following warmer springs advances faster in the south than in the north, resulting in proportionally shorter breeding seasons, reflecting higher nest failure rates in the south and in warmer years. Tracking shifts in multiple lifecycle events allowed us to identify points of failure in the breeding cycle in regions where the species has negative population trends, thereby demonstrating the utility of phenology analyses for illuminating mechanistic pathways underlying observed population trajectories.</span></p>
Temporal change in the contribution of immigration to population growth in a wild seabird experiencing rapid population decline
<p>The source-sink paradigm predicts that populations in poorer-quality habitats ("sinks") persist due to continued immigration from more-productive areas ("sources"). However, this categorisation of populations assumes that habitat quality is fixed through time. Globally, we are in an era of wide-spread habitat degradation, and consequently, there is a pressing need to examine dispersal dynamics in relation to local population change. We used an integrated population model to quantify immigration dynamics in a long-lived colonial seabird, the black-legged kittiwake Rissa tridactyla, that is classified as globally "Vulnerable". We then used a transient life table response experiment to evaluate the contribution of temporal variation in vital rates, immigration rates, and population structure to realised population growth. Finally, we used a simulation analysis to examine the importance of immigration to population dynamics. We show that the contribution of immigration changed as the population declined. This study demonstrates that immigration is unlikely to maintain vulnerable sink populations indefinitely, emphasising the need for temporal analyses of dispersal to identify shifts that may have dramatic consequences for population viability.</p>
Datasets-A globally robust relationship between water table decline, subsidence rate and carbon release from peatlands
<p>Supplementary Data A shows meta-data for in-situ and laboratory measurements of soil respiration or its components soil heterotrophic respiration and autotrophic respiration, as well as associated environmental variables from global pristine peatlands and water table decline peatlands, respectively.</p> <p> </p> <p>Supplementary Data B shows the relationships between peatland subsidence rates and drainage years for different land uses in different climate zones, relationships between proportion of peatland subsidence rates due to oxidation and drainage years for different land uses in different climate zones, the estimated peat subsidence rates and peat subsidence rates due to oxidation, the synthesized soil organic carbon content and soil bulk density at the layer of 0-30 cm from pristine peatlands, and the in-situ measured annual soil heterotrophic respiration rates for validating the robustness of the developed emipirical models of this study. </p>
Data from: Protection status, human disturbance, snow cover and trapping drive density of a declining wolverine population in the Canadian Rocky Mountains
<p>Protected areas are important in species conservation, but high rates of human-caused mortality outside their borders and increasing popularity for recreation can negatively affect wildlife populations. We quantified wolverine (<em>Gulo gulo</em>) population trends from 2011 to 2020 in >14 000 km2 protected and non-protected habitat in southwestern Canada. We conducted wolverine and multi-species surveys using non-invasive DNA and remote camera-based methods. We developed Bayesian integrated models combining spatial capture-recapture data of marked and unmarked individuals with occupancy data. Wolverine density and occupancy declined by 39 percent, with an annual population growth rate of 0.925. Density within protected areas was 3 times higher than outside and declined between 2011 (3.6 wolverines/1000 km2) and 2020 (2.1 wolverines/1000 km2). Wolverine density and detection probability increased with snow cover and decreased near development. Detection probability also decreased with human recreational activity. The annual harvest rate of 13% was above the maximum sustainable rate. We conclude that humans negatively affected the population through direct mortality, sub-lethal effects and habitat impacts. Our study exemplifies the need to monitor population trends for species at risk – within and between protected areas - as steep declines can occur unnoticed if key conservation concerns are not identified and addressed.</p>
Table 1. The declination of feminine nouns (after [4])-ADX — Agent for Morphologic Analysis of Lexical Entries in a Dictionary
<p>An example of such searching trees for nouns of all genders (masculine, feminine, neuter)<br> together with the entire analysis made by the ADX agent for the word “cepelor” is presented in<br> figure 2. The pairs of numbers in brackets form lists of lines and columns from the inflections’<br> charts where endings from the top of the list are found. We have noted the zero ending with – (that<br> is always the root of the tree) and the void list with * (Null/Nil).</p>
Data for: Summer declines of cave-dwelling Tricolored Bats
<p>Several bat species experienced rapid population declines in the northern United States and Canada in response to the white-nose syndrome (WNS) epizootic. The pathogen has since spread across the United States, including the southeast, where relatively warm temperatures may change host–pathogen interactions. In the cave-rich Tennessee-Alabama-Georgia (TAG) region, we examined the impacts of WNS and forest cover on the Tricolored Bat (<em>Perimyotis subflavus</em>) metapopulation using a long-term dataset of 832 cave surveys conducted in summer and winter from 2004–2022. Most bat colonies were small (<30 individuals), and bats were more likely to be present and abundant in caves surrounded by high percent forest cover, reiterating the importance of forest management for bat conservation. When comparing the years before and after the pathogen arrived in 2010–2012, bat presence and abundance during winter hibernation did not change. This stability contrasts significant declines in other studies, suggesting that Tricolored Bat populations respond differently to WNS in small colonies in the TAG region. Fewer Tricolored Bats used caves in the summer than during hibernation, but across all years, we observed 1021 Tricolored Bats in 121 caves during summer surveys. Unlike stable winter trends, bat presence and abundance declined in the post-WNS period in summer, when cave use is optional. This first broad geographical analysis of summer cave use highlights a potentially important change in bat behavior. Disease surveillance and conservation efforts that target caves with relatively small Tricolored Bat colonies in winter and/or summer may be important for regional population persistence of this threatened species.</p>
Figure 1 in Description of Laimaphelenchus sinensis n. sp. (Nematoda: Aphelenchoididae) from declining Chinese pine, Pinus tabuliformis in Beijing, China
Figure 1: Line drawings of LaimaphelenChus sinensis n. sp. A: Entire female; B: Entire male; C: Anterior region; D: Female posterior region showing vulva and post-uterine sac; E: Lateral lines F, G: Female tail terminus; H: Male tail; I: Spicule. (Scale bars = A, B = 20µ m; C-I = 10µ m).
Figure 3 in Description of Laimaphelenchus sinensis n. sp. (Nematoda: Aphelenchoididae) from declining Chinese pine, Pinus tabuliformis in Beijing, China
Figure 3: Phylogenetic relationships of LaimaphelenChus sinensis n. sp. and aphelenchid nematodes based on full length of 18 S rDNA. The 100001st Bayesian tree inferred from 18 S rDNA under TVM + I + G model. AphelenChus avenae (JQ348399) served as the outgroup species. Posterior probability values exceeding 50% are given on appropriate clades.
Figure 2 in Description of Laimaphelenchus sinensis n. sp. (Nematoda: Aphelenchoididae) from declining Chinese pine, Pinus tabuliformis in Beijing, China
Figure 2: Light photomicrographs of LaimaphelenChus sinensis n. sp. A: Entire female; B: Entire male; C: Lateral lines; D: Anterior region; E: Female posterior region showing vulva and postuterine sac; F, G: Vulval regions; H: Female tail; I-K: Female tail terminus; L-N: Male tails arrows showing position of caudal papillae (Scale bars = A, B = 20 µm; C-N = 10µ m; Abbreviations: ex, excretory pore).
ScienceDex guides
Understand access before you commit
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.