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183 results for “exotic species”
Fig. 2 in Reproductive biology of the peacock bass Cichla piquiti (Perciformes: Cichlidae), an exotic species in a Neotropical reservoir
Fig. 2. Male and female gonadosomatic index (GSI) ± SD of Cichla piquiti and environmental variables ± SD collected at the Itumbiara Reservoir between December 2004 and November 2005 [GSI male (square), GSI female (triangle); (a) water temperature, (b) accumulated rainfall, (c) reservoir level].
List of non-naturalized plant species present in France extracted from Pl@ntNet data (exotic ornamental and cultivated plants in particular).
<p>This dataset contains the list of plant species that have been observed on the French territory using the <a href="https://plantnet.org/">Pl@ntNet </a>application and that are NOT know as being either native or naturalized according to Kew's Plants of the World Online repository (<a href="https://powo.science.kew.org/">POWO</a>). Such species are typically exotic species managed by humans in anthropized environments such as guardens, houses or cultivated areas. This includes commercialized plants for various usage such as ornemental plants, eatable plants, phytotherapy, etc. The list contains 5,589 species, each associated with its scientific name and the number of valid Pl@ntNet observations of that species geo-localized in the metropolitan French territory. </p>
Fig. 1 in A new and earlier record of Chrysomya megacephala in South Africa, with notes on another exotic species, Calliphora vicina (Diptera: Calliphoridae)
Fig. 1. Distribution of Chrysomya megacephala in southern Africa, with date of first record for each site.
Fig. 2 in A new and earlier record of Chrysomya megacephala in South Africa, with notes on another exotic species, Calliphora vicina (Diptera: Calliphoridae)
Fig. 2. Distribution of Calliphora vicina in southern Africa, with date of first record for each site.
Exotic fish species traits across levels of establishment
<p>Data for reproducing the results obtained by Bernery, Marino & Bellard (2023) in the paper "Relative importance of exotic species traits in determining invasiveness across levels of establishment: Example of freshwater fish"</p> <p>Data description and scripts for running the analyses are available at: https://github.com/claramarino/estab_levels_exotic_fish</p>
Correlation of native and exotic species richness: a global meta-analysis finds no invasion paradox across scales
This data set is also available on the Dryad Digital repository (link : https://doi.org/10.5061/dryad.59kv753) This dataset was created for investigating the biotic resistance hypothesis, that is, the idea that species‐rich communities are more successful at resisting invasion by exotic species than are species‐poor communities. It has been argued that native–exotic richness relationships (NERR) are negative at small spatial scales and positive at large scales, but evidence for the role of spatial scale on NERR has been contradictory. However, no formal quantitative synthesis had previously examined whether NERR is scale‐dependent across multiple studies, and previous studies on NERR have not distinguished spatial grain and extent, which may drive very different ecological processes Therefore, a global systematic review was carried out to create this dataset, which includes 204 individual cases of observational (non‐experimental) NERRs from 101 publications. Further, the above-mentioned hypotheses were investigated using a hierarchical mixed‐effects meta‐analysis, which showed that NERR was indeed highly scale dependent across studies and increased with the log of grain size. Also, no clear patterns of NERR across different spatial extents were found, suggesting that extent plays a less important role in determining NERR than does grain, although there was a complex interaction between extent and grain size. Almost all studies on NERR were found to have been conducted in North America, western Europe, and a few other regions, with little information on tropical or Arctic regions. NERR was also found to increase northward in temperate regions and vary with longitude. These results were published in the paper titled Correlation of native and exotic species richness: a global meta‐analysis finds no invasion paradox across scales (Peng et al. 2018), which represents the first global quantitative analysis of scale‐based NERR.
Presence, abundance, and environmental data from 1996 on Celastrus orbiculatus and other exotic plant species in the southern Appalachians, USA
A variety of abiotic, biotic, human and historic variables related to environmental suitability and propagule pressure determine the distribution of invasive plants in a landscape. Understanding the role of these variables for invasive species is challenging because environmental variables are often correlated, many invaders have broad ecological niches, and invasive distributions are often highly dynamic. The researchers examined the role of environmental variables at multiple spatial scales on the distribution of an invasive vine Celastrus orbiculatus (Celastraceae) and other exotic plant species in the southern Appalachians, USA. Data were collected in the Southern Blue Ridge Province of the southern Appalachian Mountains in western North Carolina, USA. This data set includes data on elevation, environmental disturbance, and the presence and abundance of various plant species. The researchers extracted presence and absence data from various sources, including the National Park Service and U.S. Forest Service survey data (NPS/USFS) and Southern Appalachian Volunteer Environmental Monitoring data (SAVEM) (Albright et al. 2009).
Community-level direct and indirect impacts of an invasive plant favour exotic over native species
<p class="CxSpFirst">1. Indirect interactions mediated by shared enemies or mutualists (i.e., apparent competition) can influence whether invasive plants harm or benefit co-occurring species. However, studies to date have largely examined single pairwise interactions, limiting our understanding of the interplay among different types of interactions and whether indirect impacts systematically favour native or exotic species. Predicting indirect interaction strength has also proven challenging, and it remains unclear whether the strengths of different indirect interactions are correlated.</p> <p class="CxSpMiddle">2. We conducted a field experiment in a grassland invaded by Scotch broom (<i>Cytisus scoparius</i>) to compare the strength of its indirect impacts, via both soil fungi or herbivores, on 21 native and exotic legume species growing in pots buried in the ground. Direct interactions of plants with soil fungi were controlled using nylon mesh pot windows of differing porosity (1 or 38 µm) to prevent or allow soil fungi hyphal growth. Arthropod herbivores were controlled through spraying pyrethrum pesticide. To assess indirect impacts, interactions were compared between plants adjacent to or 50 m away from an extensive Scotch broom invasion. We measured plant performance (survival, height, and biomass), arthropod and hare herbivory, and rhizobia nodulation.</p> <p class="CxSpMiddle">3. Despite increasing arthropod herbivory of both native and exotic plant species, Scotch broom had a net positive impact on their survival and growth, through sheltering them from abiotic stress, and indirectly via beneficial soil fungi and release from hare browsing. Soil fungi also increased arthropod herbivory, decreased rhizobia nodulation, and disproportionately promoted the growth of exotic plants. Overall, exotic plants experienced stronger interactions, which favoured them with beneficial soil fungi and rhizobia but not hare browsing. Finally, indirect interaction strength was not correlated among indirect interactions mediated by different interaction partners.</p> <p class="CxSpMiddle">4. Synthesis: We demonstrate that invaders affect their competitors through multiple interacting indirect pathways that were stronger than direct 'nurse plant' effects, emphasising the importance of a community-level approach to studying biological invasions. Exotic species experienced stronger positive and negative impacts than natives, but were facilitated overall, potentially contributing to exotic dominance in communities.</p>
Data from: Reintroduced native Populus nigra in restored floodplain reduces spread of exotic poplar species
<p class="AuthorList">Exotic <i>Populus</i> taxa pose a threat to the success of riparian forest restoration in floodplain areas. We evaluated the impact of exotic <i>Populus</i> taxa on softwood riparian forest development along the river Common Meuse after introducing native <i>Populus nigra</i> and after the re-establishment of the natural river dynamics. We sampled 154 poplar seedlings that spontaneously colonised restored habitat and assessed their taxonomy based on diagnostic chloroplast and nuclear microsatellite markers. Furthermore, by using a paternity analysis on 72 seedlings resulting from six open pollinated <i>P. nigra </i>females, we investigated natural hybridization between frequently planted cultivated poplars and native <i>P. nigra</i>.</p> <p>The majority of the poplar seedlings from the gravel banks analyzed where identified as <i>P. nigra</i>; only 2% of the sampled seedlings exhibited genes of exotic poplar species. Similarly, the majority of the seedlings from the open pollinated progenies were identified as <i>P. nigra</i>. For three seedlings (4%), paternity was assigned to a cultivar of <i>P.</i> x <i>canadensis</i>.</p> <p>Almost two decades after reintroducing <i>P. nigra</i>, the constitution of the seed and pollen pools changed in the study area in favour of reproduction of the native species and at the expense of the exotic poplar species. This study indicates that, although significant gene flow form exotic poplars is observed in European floodplains, restoration programmes of the native <i>P. nigra</i> can vigorously outcompete the exotic gene flows and strongly reduce the impact of exotic <i>Populus</i> taxa on the softwood riparian forest development.</p>
APPENDIX 1 in Nassarius foveolatus (Gastropoda, Nassariidae), a new record of an exotic species in Brazil
APPENDIX 1 Neighbor-Joining tree of the COI gene with all Nassarius sequences analyzed for genetic identification of the focal individual. Numbers in the nodes represent bootstrap values.
APPENDIX 2 in Nassarius foveolatus (Gastropoda, Nassariidae), a new record of an exotic species in Brazil
APPENDIX 2 Bayesian tree of the COI gene with all Nassarius sequences analyzed for genetic identification of the focal individual. Numbers in the nodes represent posterior probabilities.
Data from: An exotic species alters patterns of marine community development
Predictions of ecological patterns can be strengthened through replication of foundational studies under different environmental conditions to evaluate the consistency in their underlying processes. In this study, we replicated Sutherland and Karlson's 1977 classic ecology study that tested terrestrial paradigms of community development in a marine fouling community. The abundance patterns of marine fouling species were quantified on sequentially submerged settlement plates to investigate the effects of disturbance date on short- and long-term patterns of community development, and the original study's datasets were re-analyzed for comparison. In both studies, community structure was initially shaped by disturbance date due to monthly and annual variation in larval recruitment; however, the influence of disturbance date diminished over time. Despite these similarities, the underlying drivers of long-term patterns of community development have shifted substantially since the 1970′s. During the present study, an exotic tunicate, Clavelina oblonga, dominated plates over time and its dominance was associated with significant declines in species diversity. In contrast, the 1970s long-term community was characterized by a heterogeneous mixture of species that varied inter-annually, yielding increased species diversity over time. Continued observations of our settlement plates (2 years total) indicated that C. oblonga remains the dominant species in this community, suggesting that these findings are not the result of a single, novel recruitment event. These results highlight how an exotic species can alter patterns of community development and biodiversity. Moreover, this study demonstrates the need to replicate foundational ecological studies to evaluate community dynamics and underlying processes in light of ongoing ecosystem change.
Explainable few-shot learning workflow for detecting invasive and exotic tree species
<p>This is the supporting dataset of research work: <a href="Link"><strong>Explainable few-shot learning workflow for detecting</strong></a> <a href="Link"><strong>invasive and exotic tree species</strong></a>. (Link to be added after the publication) In this research, we presents a workflow that tackles both challenges by proposing an explainable few-shot learning workflow for detecting invasive and exotic tree species in the Atlantic Forest of Brazil using Unmanned Aerial Vehicle (UAV) images. By integrating a Siamese network with explainable AI (XAI), the workflow enables the classification of tree species with minimal labeled data while providing visual, case-based explanations for the predictions.</p> <p>The workflow is accessible in <a href="Link">this GitHub repository</a> (Link to be added after the publication). The required dataset of this workflow in provided in this Zenodo repository.</p> <p>This dataset repository has the following contents</p> <ul> <li> <p>uav_img.zip: the UAV orthomosaic image (.tif) of the study area used in this research, with related metadata</p> </li> <li>tree_labels.zip: the labels of trees created by expert, available in .shp and .gpkg</li> <li> <p>cutouts.zip: tree cutouts used in this study. They are two sub-directories:</p> <ul> <li>all_cutouts: all the candidated cutouts from three sources. See the README.md file insisde this folder for more information</li> <li>selected cutout: the manually selected cutouts from all cutouts used for training.</li> </ul> </li> <li> <p>training_pairs_20000.zarr.zip: training data created for base network traning. It is created by pairing the selected cutouts.</p> </li> <li>netflora.zip: Netflora workflow prediction results</li> <li>optimized_models.zip: Optimized base models (shallow and deep) and refined models with different shots/fold setup.</li> <li>n_fold_x_validation.zip: data pairs for refinement traing, with n fold and x valiation setup.</li> </ul>
Establishment from seed is more important for exotic than for native plant species
<p>Climate change has initiated the movement of both native and non-native (exotic) species across the landscape. Exotic species are hypothesized to establish from seed more readily than comparable native species. We tested the hypothesis that seed limitation is more important for exotic species than native grassland species. We compared seed limitation and invasion resistance over three growing seasons between 18 native and 18 exotic species, grown in both monocultures and mixtures in a field experiment. Half of the plots received a seed mix of the contrasting treatment (i.e. exotic species were seeded into native plots, and native species were seeded into exotic plots), and half served as controls. We found that 1) establishment in this perennial grassland is seed limited, 2) establishment from seed is greater in exotic than native species, and 3) community resistance to seedling establishment was positively related diversity of extant species, but only in native communities. Native-exotic species diversity and composition differences did not converge over time. Our results imply that native-to-exotic transformations occur when diversity declines in native vegetation and exotic seeds arrive from adjacent sites, suggesting that managing for high diversity will reduce transformations to exotic dominance.</p>
Publication release: How well do species distribution models predict occurrences in exotic ranges?
<div class="record-description"> <p>Species distribution models (SDMs) are widely used predictive tools to forecast potential biological invasions. However, the reliability of SDMs extrapolated to exotic ranges remains understudied, with most analyses restricted to few species and equivocal results. We examined the spatial transferability of SDMs for 647 non-indigenous species extrapolated across 1,867 invaded ranges, and identify what factors may help differentiate predictive success from failure. We performed a large-scale assessment of the transferability of SDMs using two modelling approaches: generalized additive models (GAMs) and MaxEnt. We fitted SDMs on the native ranges of species and extrapolated them to exotic ranges. We examined the influence of general factors and factors related to biological invasions on spatial transferability.</p> <p>Here, we provide the code and data for publication in Global Ecology and Biogeography as part of Nguyen and Leung 2022 "How well do species distribution models predict occurrences in exotic ranges?". Provided are the files and scripts necessary to fit and validate the SDMs using distirbutional data from their native and exotic ranges, respectively, formulated as generalized additive models (GAMs) or MaxEnt models. Additionally, provided is a script to validate the SDMs on their native fitting range using 10-fold cross-validation, and to fit the transferability model, as a linear mixed model (LMM), with a provided cleaned data.frame. The dataset provided includes a full species list with GBIF occurrence records, target-group background (TGB) records to use with model fitting and validation, as well as environmental data associated with the sightings.</p> </div>
EWINA_1st_RECORDS: Year of the first record of observation of each native and exotic earthworm species present in North America
<p>Year of the first record of each native and exotic earthworm species (Oligochaeta) present in North America. Stops in 2021.</p> <p>More details here: <a href="https://github.com/JeromeMathieuEcology/GlobalWorming">https://github.com/JeromeMathieuEcology/GlobalWorming</a>.</p>
Invasive plant species that experience lower herbivory pressure may evolve lower diversities of chemical defence compounds in the exotic range
<p><strong>ABSTRACT</strong></p> <p><strong>PREMISE</strong></p> <p>Invasive plant species often escape from specialist herbivore species and are likely to experience herbivory mostly from generalist herbivore species in the exotic range. Consequently, the Shifting Defence Hypothesis (SDH) predicts that invasive plants will express higher concentrations of qualitative defence compounds to deter dominant generalist herbivores in the exotic range. Here, I additionally propose a Reduced Chemical Diversity Hypothesis (RCDH), which predicts that reduced herbivory pressure will select for invasive plant genotypes that produce lower diversities of defence compounds in the exotic range.</p> <p><strong><span>METHODS</span></strong></p> <p>I tested whether: (1) Invasive <em>Brassica nigra</em> populations express a lower diversity and an overall higher concentration of glucosinolate compounds than native-range <em>B. nigra</em>; (2) <em>Brassica nigra</em> individuals that express high diversities and concentrations of glucosinolates are more attractive to specialist and deterrent to generalist herbivores; (3) Tissues of invasive <em>B. nigra </em>are less palatable to two generalist herbivores <em>Theba pisana</em> and <em>Helix aspersa</em> than tissues of native-range<em> B. nigra</em>.</p> <p><strong><span>RESULTS</span></strong></p> <p>Invasive <em>B. nigra </em>populations expressed a significantly lower diversity of glucosinolate compounds and a marginally higher concentration of total glucosinolate compounds. Leaf tissues of the invasive <em>B. nigra</em> were significantly less palatable to <em>T. pisana</em> and marginally less so to <em>H. aspersa</em>. <em>Brassica nigra</em> individuals that expressed high concentrations of total glucosinolate compounds were visited by a low diversity of generalist herbivore species in the field.</p> <p><strong><span>CONCLUSIONS</span></strong></p> <p>The biogeographical differences in glucosinolate profiles of invasive and native-range populations of <em>B. nigra</em> may be the result of differential herbivore selection pressures in the respective ranges.</p>
Figure 3 in Population abundance and growth parameters of an exotic bivalve species, Anadara kagoshimensis, in the Southwestern Black Sea
Figure 3. Distribution of biomass CPUA (kg km–2) A. kagoshimensis in 2011.
Figure 2 in Population abundance and growth parameters of an exotic bivalve species, Anadara kagoshimensis, in the Southwestern Black Sea
Figure 2. Sampling gear (hydroulic dredge).
Figure 6 in Population abundance and growth parameters of an exotic bivalve species, Anadara kagoshimensis, in the Southwestern Black Sea
Figure 6. Shell length–weight relationship of A. kagoshimensis by years.
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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.