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173 results for “Alien plants”
Global Naturalized Alien Flora (GloNAF). Open access data to support research on understanding global plant invasions.
<p>This dataset is a snapshot of the Global Naturalized Alien Flora (GloNAF) database, version 2.02. GloNAF is a continuously updated, curated compilation of alien naturalized vascular plant inventories for geographic regions from around the world. The dataset has 16,429 unique taxa reported as naturalized or invasive and covers 1,343 regions (including 427 islands) from 336 data sources. For each region, the status (invasive, naturalized) is provided as listed in the original source. We provide the scientific names included with the original data source, and the matching accepted name or synonym of the taxon as given in the World Checklist of Vascular Plants (WCVP) Version 12. In addition, we provide an ESRI shapefile of polygons for each region. We also provide several variables that can be used to filter the data according to quality and completeness of alien taxon lists, which vary among the combinations of regions and data sources.</p> <p>The 'glonaf_flora2.csv' file lists the IDs ('taxon_wcvp_id') of all naturalized taxa contained in GloNAF and the regions they occur in. The 'glonaf_taxon_wcvp.csv' lists the original taxon names provided in the source data along with the corresponding accepted taxon name from the WCVP (version 12) for all alien taxa in GloNAF, regardless of their naturalization status. To link taxon names with naturalization records, join the 'id' column of the 'glonaf_taxon_wcvp.csv' file to the 'taxon_wcvp_id' column in 'glonaf_flora2.csv' . Additional information regarding the original source of the data ('glonaf_reference.csv'), specific attributes of the taxon lists ('glonaf_list.csv') and the region ('glonaf_region.csv') can also be joined similarly to 'glonaf_flora2.csv '. </p> <p> </p>
First spectral Reflectance Dataset of Equisetum hyemale (Snake grass) Invasive Alien Plant
<p><em><span>This repository contains the first spectral reflectance dataset of <span>snakegrass</span> (Equisetum hyemale) invasive alien species recorded in South Africa. Spectral reflectance measurements were collected under lab conditions using the Spectral Evolution PSR-300 full-range spectrometer. Spectral pre-processing was performed in R statistical software to remove noisy spectra and regions and perform averaging per sample (code accessible: https://github.com/mkganyago/SpectralEvolutionFileReader).<br></span></em></p>
The more microplastic types pollute the soil, the stronger the growth suppression of invasive alien and native plants
<p>The ecological consequences of microplastic pollution for plants remain largely unknown, and the few studies that tested the effects usually focused on a single type of microplastic and a single plant species. However, most plants will be exposed to multiple microplastic types simultaneously, and the effects may vary among species.</p> <p>To test the effects of microplastic diversity on plants, we grew single plants of eight invasive and eight native species in pots with substrate polluted with 0, 1, 3 and 6 types of microplastics.</p> <p>We found that the growth suppression by microplastic pollution became stronger with the number of microplastic types the plants were exposed to. This tended to be particularly the case for invasive species, as their biomass advantage over natives diminished with the number of microplastic types. The biomass responses coincided with a positive effect of the number of microplastic types on root allocation and thickness, which was also stronger for invasive than for native species. In addition, the results of hierarchical diversity-interaction models suggest that the negative impact of microplastic diversity on the total biomass of invasive plant species was influenced by both the identities of the microplastic and certain types of microplastic with strong pairwise interactions. In contrast, the effect on native species was determined solely by the microplastic identities.</p> <p><em>Synthesis: </em>Our multi-species study thus shows for the first time that the negative effects of microplastic pollution on plant growth increase with the number of microplastic types. We also found tentative evidence that the negative impacts of microplastic diversity were more pronounced for invasive plants compared to native plants, and that this might be due to differences in the responses of root allocation and thickness.</p>
Dataset for "Alien plants tend to occur in species-poor communities"
<p>This dataset contains the list of plant species, their abundances, vegetation types, and the area of the vegetation plots analyzed in the paper titled “<strong>Alien plants tend to occur in species-poor communities</strong>” by Padullés Cubino et al. (2022; Neobiota). </p> <p>These data were obtained from the Czech National Phytosociological Database (Chytrý and Rafajová, 2003) (<a href="https://botzool.cz/vegsci/phytosociologicalDb">https://botzool.cz/vegsci/phytosociologicalDb</a>).</p> <p>The dataset contains 2 tables:</p> <ol> <li>“Metadata.xlsx”: It includes a description of the fields found in "plot_species.csv".</li> <li>“plot_species.csv”: It includes the list of angiosperm plant taxa, their abundance cover, associated vegetation type, and the area of each vegetation plot.</li> </ol> <p>References: </p> <p>Chytrý M, Rafajová M (2003) Czech National Phytosociological Database: basic statistics of the available vegetation-plot data. Preslia 75: 1–15.</p>
Data from: Soil mesofauna may buffer the negative effects of drought on alien plant invasion
<p>Although many studies have tested the direct effects of drought on alien plant invasion, less is known about whether drought affects alien plant invasion indirectly via interactions of plants with other groups of organisms such as soil mesofauna.</p> <p>To test for such indirect effects, we grew single plants of nine naturalized alien target species in pot-mesocosms with a community of five native grassland species under four combinations of two drought (well-watered vs drought) and two soil-mesofauna-inoculation (with vs without) treatments.</p> <p>We found that drought decreased the absolute and the relative biomass production of the alien plants, and thus reduced their competitive strength in the native community. Drought also decreased the abundance of soil mesofauna, particularly soil mites, but did not affect the abundance and richness of soil herbivores. Soil-fauna inoculation did not affect biomass of the alien plants but increased biomass of the native plant community, and thereby decreased the relative biomass production of the alien plants. This increased invasion resistance due to soil fauna, however, tended (p = 0.09) to be stronger for plants growing under well-watered conditions than under drought.</p> <p>Synthesis. Our multispecies experiment thus shows that soil fauna might help native communities to resist alien plant invasions, but that this effect might be weakened under drought. In other words, soil mesofauna may buffer the negative effects of drought on alien plant invasions.</p>
Figure 4 in Modelling hot spot areas for the invasive alien plant Elodea nuttallii in the EU
Figure 4. The occurrence with data thinned by extraction from subset 1 (A) and subset 2 (B) of occurrence data. The combined output of both is also presented (C). Areas with low uncertainty and above the habitat suitability threshold (i.e. priority areas) are marked in red while areas with high uncertainty are marked in yellow. The grid size of all 3 maps is 1 km2.
Figure 2 in Modelling hot spot areas for the invasive alien plant Elodea nuttallii in the EU
Figure 2. The model performance (regularized training gain) of the MaxEnt model generated using subset 2 of the occurrence data when the variable in question is omitted or used in isolation, compared to the performance of the model when all variables are used.
Figure 6. The occurrence with data from subset 1 in Modelling hot spot areas for the invasive alien plant Elodea nuttallii in the EU
Figure 6. The occurrence with data from subset 1 (A) and subset 3 (B). The combined output of both is also presented (C). Areas with low uncertainty and above the habitat suitability threshold (i.e. priority areas) are marked in red while areas with high uncertainty are marked in yellow. The grid size of all 3 maps is 1 km2.
Figure 7 in Modelling hot spot areas for the invasive alien plant Elodea nuttallii in the EU
Figure 7. "Alert areas", i.e. areas with high probability to be invaded by Elodea nuttallii that are at least 100 km away from any known occurrence point of the species, divided by being inside or outside Natura 2000 site, generated using subset 1 and subset 3 of occurrence data.
Figure 5 in Modelling hot spot areas for the invasive alien plant Elodea nuttallii in the EU
Figure 5. "Alert areas", i.e. areas with high probability to be invaded by Elodea nuttallii that are at least 100 km away from any known occurrence point of the species, divided by being inside or outside Natura 2000 site, generated using subset 1 and subset 2 of occurrence data.
Fig. 2 - A in Report 2020 on plant biodiversity in Italy: native and alien vascular flora
Fig. 2 - A) Poa magellensis F.Conti & Bartolucci. Endemic to Italy, described in 2020. / Specie endemica italiana descritta nel 2020. (Photo: / Foto: Fabrizio Bartolucci). B) Gymnospermium scipetarum Paparisto & Qosja ex E.Mayer & Pulević subsp. eddae Rosati, Farris, Fascetti & Selvi. Endemic to Italy, described in 2018. / Sottospecie endemica italiana descritta nel 2018. (Photo: / Foto: Leonardo Rosati).
Fig. 1 in Report 2020 on plant biodiversity in Italy: native and alien vascular flora
Fig. 1 - Hieracium tolstoii Fen. & Zahn. Endemic to Italy, recognized as extinct in 2019. / Specie endemica italiana dichiarata estinta nel 2019 (FI051948; Scan / Scansione: Erbario dell'Università di Firenze).
Fig. 1 - Anthyllis apennina F in Report 2021 on plant biodiversity in Italy: native and alien vascular flora
Fig. 1 - Anthyllis apennina F.Conti & Bartolucci, an Italian endemic described in 2021 (Monte Tricella, Abruzzo, Italy. Photo: Fabio Conti). Anthyllis apennina F.Conti & Bartolucci, specie endemica italiana descritta nel 2021 (Monte Tricella, Abruzzo, Italia. Foto: Fabio Conti).
Fig. 3 in Report 2021 on plant biodiversity in Italy: native and alien vascular flora
Fig. 3 - Ophrys japigiae Turco, D'Emerico, Dura, Gennaio & Medagli, an Italian endemic described in 2021 (Ugento, Puglia, Italy. Photo: Francesco Chetta). / Ophrys japigiae Turco, D'Emerico, Dura, Gennaio & Medagli, specie endemica italiana descritta nel 2021 (Ugento, Puglia, Italy. Foto: Francesco Chetta).
Fig. 2 - A in Report 2021 on plant biodiversity in Italy: native and alien vascular flora
Fig. 2 - A) Odontarrhena bertolonii (Desv.) Jord. & Fourr. subsp. cesalpinoana Selvi, an Italian endemic described in 2021 (Monte Petroso, Toscana, Italy. Photo: Federico Selvi); B) Centaurea phalacrica Brullo, Cambria, Crisafulli, Tavilla & Sciandr., an Italian endemic described in 2021 (Capo Rasocolmo, Sicilia, Italy. Photo: Gianmarco Tavilla). / Odontarrhena bertolonii (Desv.) Jord. & Fourr. subsp. cesalpinoana Selvi, sottospecie endemica italiana descritta nel 2021 (Monte Petroso, Toscana, Italia. Foto: Federico Selvi); B. Centaurea phalacrica Brullo, Cambria, Crisafulli, Tavilla & Sciandr., specie endemica italiana descritta nel 2021 (Capo Rasocolmo, Sicilia, Italia. Foto: Gianmarco Tavilla).
Figure 5 in Motivations and contributions of volunteer groups in the management of invasive alien plants in South Africa's Western Cape province
Figure 5. Challenges (n = 56) faced by individual volunteers in the management of invasive alien plant management in Western Cape, South Africa.
Figure 4 in Motivations and contributions of volunteer groups in the management of invasive alien plants in South Africa's Western Cape province
Figure 4. Reasons for initial engagement (n = 71) in volunteering and the current motivations (n = 86) for volunteers to be involved in the management of invasive alien plant species in Western Cape, South Africa.
Figure 2 in Motivations and contributions of volunteer groups in the management of invasive alien plants in South Africa's Western Cape province
Figure 2. Motivations (n = 35) for forming volunteer groups that remove alien invasive plants in Western Cape, South Africa.
Figure 1 in Motivations and contributions of volunteer groups in the management of invasive alien plants in South Africa's Western Cape province
Figure 1. Identified volunteer groups (52) in Western Cape of South Africa. Groups that participated in the survey (26) are indicated by circles that also show group sizes (individual members per group). Groups that did not participate in the survey are indicated by blue circles. The green area on the map represents the fynbos biome.
Figure 3 in Motivations and contributions of volunteer groups in the management of invasive alien plants in South Africa's Western Cape province
Figure 3. Challenges (n = 26) faced by volunteering by groups in the management of invasive alien plants in Western Cape, South Africa.
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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)
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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.