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10 results for “hogweed”
Detecting Hogweed on the Ground-Level View Photographs: Dataset
<p>Semantic segmentation highlighting Sosnowsky's hogweed on ground-level view images.</p> <p>Photographic images are hosted on Zenodo.</p> <p>COCO-formatted (*.json) polygons are to be published on Github: https://github.com/alexeyev/hogweed-ground-level-view</p>
Contracts for the eradication of plants of the hogweed (Heracleum sosnowskyi Manden.) in Russia from 2011 to 2017.
<p>Contracts for the eradication of hogweed (<em>Heracleum sosnowskyi </em>Manden.) plants in Russia from 2011 to 2017 are described. Data on the cost of contracts, site areas, mowing, herbicide use, mapping were obtained at http://zakupki.gov.ru</p>
Illustration of a cellular automaton simulating of the invasive hogweed stand area growth based on weather data from Sofia airport
<p>Left. Grid (field) size: 100x100 cells (10000 m2). Initial configuration of occupied cells - 1 cell occupied in the center of the field.</p> <p>Right. Grid (field) size: 100x100 cells (10000 m2). Initial configuration of occupied cells - 100 cells occupied in random order.</p>
Data from: Reduced genetic diversity, increased isolation and multiple introductions of invasive giant hogweed in the western Swiss Alps
The Giant Hogweed (Heracleum mantegazzianum) has successfully invaded 19 European countries as well as parts of North America. It has become a problematic species due to its ability to displace native flora and to cause public health hazards. Applying population genetics to species invasion can help reconstruct invasion history and may promote more efficient management practice. We thus analyzed levels of genetic variation and population genetic structure of H. mantegazzianum in an invaded area of the western Swiss Alps as well as in its native range (the Caucasus), using eight nuclear microsatellite loci together with plastid DNA markers and sequences. On both nuclear and plastid genomes, native populations exhibited significantly higher levels of genetic diversity compared to invasive populations, confirming an important founder event during the invasion process. Invasive populations were also significantly more differentiated than native populations. Bayesian clustering analysis identified five clusters in the native range that corresponded to geographically and ecologically separated groups. In the invaded range, ten clusters occurred. Unlike native populations, invasive clusters were characterized by a mosaic pattern in the landscape, possibly caused by anthropogenic dispersal of the species via roads and direct collection for ornamental purposes. Lastly, our analyses revealed four main divergent groups in the western Swiss Alps, likely as a consequence of multiple independent establishments of H. mantegazzianum.
Supplementary materials for the manuscript "Heracleum sosnowskyi or Heracleum mantegazzianum? DNA-based identification of invasive hogweeds (Apiaceae) in two key regions of the species' invasion history in the former USSR.
<p><span><span><span><span><span>Supplementary material for </span></span></span></span></span><span><span><span><span><span>the </span></span></span></span></span><span><span><span><span><span>manuscript "</span></span></span></span></span><span><span><span><span><span>Heracleum sosnowskyi or Heracleum mantegazzianum? DNA-based identification of invasive hogweeds (Apiaceae) in two key regions of the species' invasion history in the former USSR". <br></span></span></span></span></span></p> <p><span><span><span><span><span>Shadrin_et_al_Online_Resource_Table_01.xlsx - Plant samples origin and identification.</span></span></span></span></span></p> <p><span><span><span><span><span>Shadrin_et_al_Online_Resource_Table_02.xlsx - </span></span></span></span></span><span><span><span><span><span>GenBank accession numbers for DNA markers.</span></span></span></span></span></p> <p><span><span><span><span><span> </span></span></span></span></span></p> <p><span><span><span><span><span> </span></span></span></span></span></p>
Artificially-perforated holes in stems of small hogweed (Heracleum sphondylium L.) mimic ecosystem engineering by the parsnip webworm (Depressaria radiella Goeze)
<p>We conducted a field experiment to determine if artificial holes perforated into stem compartments of <em>Heracleum sphondylium</em> mimic the natural situation with <em>Depressaria radiella</em>. At five locations near the city of Leiden, the Netherlands, <em>H. sphondylium </em>plants were exposed to different treatments: a single hole perforated in the first, second or third stem compartment, or in all three compartments. After three weeks, arthropod numbers were counted inside and around hogweed stems. </p>
Supplementary material 2 from: Rajmis S, Thiele J, Marggraf R (2016) A cost-benefit analysis of controlling giant hogweed (Heracleum mantegazzianum) in Germany using a choice experiment approach. NeoBiota 31: 19-41. https://doi.org/10.3897/neobiota.31.8103
Exemplary choice set and details of scenario benefit calculations : Explanation note: In Suppl. material 2 we present an exemplary choice set used in the choice experiment and some details of econometric analysis.
Supplementary material 1 from: Rajmis S, Thiele J, Marggraf R (2016) A cost-benefit analysis of controlling giant hogweed (Heracleum mantegazzianum) in Germany using a choice experiment approach. NeoBiota 31: 19-41. https://doi.org/10.3897/neobiota.31.8103
Details of scenario cost calculations : Explanation note: In Suppl. material 1 we present some cost calculation details of different infested area types and sizes.
Data from: Reduced genetic diversity, increased isolation and multiple introductions of invasive giant hogweed in the western Swiss Alps
Open the record for dataset details and reuse information.
Data from: Population- and species-based variation of webworm-parasitoid interactions in hogweeds (Heracelum spp.) in the Netherlands
Open the record for dataset details and reuse information.
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