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18 results for “Heracleum sosnowskyi”
Growth of Heracleum sosnowskyi Manden. plant in indoor conditions after end of vegetation period
<p>Growth of<em> Heracleum sosnowskyi</em> Manden. plant in indoor conditions after end of vegetation period. The period of observation of plant growth from October 2017 to February 2018. The series of images.</p>
Evaluation of Heracleum sosnowskyi Manden. survivial after snow cover removing in early spring
<p>The results of an experiment on the effect of snow cover removing on the areas occupied by Heracleum sosnowskyi stands in the early spring period. The experimental (impact) and control plots located in the Syktyvkar city suburb (Komi Republic, Russia).</p> <p>Most of calculation were performed in R. Find the file "FrozenHogweed_R_script.r" for calculation reproducing.</p>
Dataset and R-script for simple mechanistic model of Heracleum sosnowskyi seed dispersal by wind
<p>The dataset contains:</p> <p>- primary data about Heracleum sosnowskyi seeds traits (terminal velocity, mass, area, wing loading) and release heights for <em>H. sosnowskyi</em> populations from two geographically distant Russia regions;</p> <p>- results of experiments of model seeds launches under different wind speeds;</p> <p>- R script for exploratory statistical analysis, linear regressions and mechanistc models testing.</p> <p>The anemochorous seed dispersal was generalized with a number of empirical and mechanistic models of varying complexity. The aim of this work was to develop the simplest possible mechanistic model of <em>Heracleum sosnowskyi</em> that allows to determine the distance of seed dispersal by wind with an accuracy comparable to that of empirical measurements. We measured and compared the characteristics of the seeds (terminal velocity, mass, area, wing loading) as well as the release height for <em>H. sosnowskyi</em> populations from two geographically distant Russia regions. We tested two simplest mechanistic models: a ballistic model and a wind gradient model using identical artificial seeds with characteristics similar to those of real <em>H. sosnowskyi</em> seeds. The wind gradient model gave the best results, despite the fact that uniform in shape, weight and size artificial <em>H. sosnowskyi</em> seeds, when dropped simultaneously from the same height, fly off at different distances. This model provides an estimate of dispersal distances with an accuracy comparable to that of empirical measurements. We plan to use the presented model to develop an individual-based model that will allow us to calculate the flight distances of <em>H. sosnowskyi</em> propagules, taking into account real weather conditions in different years and in different parts of its invasion range. All primary data and R-scripts used are freely available at the Zenodo repository (https://doi.org/10.5281/zenodo.3766035).</p> <p> </p>
Fig. 2 in Heracleum Sosnowskyi Manden. Monitoring In Protected Areas - A Case Study In Rēzekne Municipality, Latvia
Fig. 2. Two studied sites in Rāzna National Park in Rēzekne municipality, Mākoņkalna village, Jegorova. Polygon No. 14 - the largest increase of Heracleum sosnowskyi cover from 2012 to 2016 among the studied sites, Polygon No. 15 – the largest new site found in 2016 (Table 2). Yellow stripes - H. sosnowskyi cover in 2012, purple colour – H. sosnowskyi cover in 2016 (Author: Elīna Tripāne).
Dataset for research paper "Heracleum sosnowskyi plants frost-resistance assessment in laboratory and field experiments"
<p>Dataset for research paper "Heracleum sosnowskyi plants frost-resistance in laboratory and field experiments". </p> <p>The <em>Heracleum sosnowsky</em> plants has low freezing tolerance and die in temperature range minus 6–12 °С. Snow cover provides stable soil temperature (not lower than minus 3 °С) and is the only factor that ensures the survival of <em>H. sosnowsky</em> plants in the regions with cold winter. The <em>H. sosnowsky</em> frost tolerance is higher in autumn (up to minus 12 °С) and became lower at spring (minus 5–7 °С). These results can be explained by absence of deep dormancy in <em>H. sosnowskyi</em> meristem tissues and gradual change of carbohydrate content in them during the cold period. The seeds have high freezing tolerance after its formation but lost it after stratification. The field experiments were carried out by participants of citizen science project “Moroz”. It was shown that <em>H. sosnowskyi</em> plant eradication probability with the help of snow removal completely depends on weather conditions. This method can be used only on the territories where the use of herbicides is prohibited and only in the regions with minimal temperature in January – Febrary not higher than minus 25 °С. The dataset with all measurements made during the experiments is available on the site of “Moroz” project (<a href="http://proborshevik.ru/%20">http://proborshevik.ru</a>).</p>
Distribution of Heracleum sosnowskyi in Syktyvkar city. Vector (polygon) dataset in shapefile.
<p>Dataset contain the borders of Heracleum sosnowskyi stands in Syktyvkar city, Komi Republic, Russia (61.669081º N, 50.822498º E). The dataset was prepared by hand recognition of sattelite images. Field verification was performed with geotagged photos from RIVR system (https://ib.komisc.ru/add/rivr/en).</p> <p>Spatial Reference System: +proj=utm +zone=39 +datum=WGS84 +units=m +no_defs (EPSG: 32639)</p> <p>Extents in spatial reference system units: xMin,yMin 482975.07,6832549.56 : xMax,yMax 494553.23,6857424.73<br> </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>
Freezing point of water, water content and proportion of freezing water in Heracleum sosnowskyi plants
<p><strong>Method plant tissue of analysis using differential scanning calorimetry (DSC)</strong></p> <p>Differential scanning calorimetry was used to assess the risk of tissue plant damage by low negative temperatures. We measured the freezing point of water, the water content and the proportion of freezing water in plant samples using the DSC – 60 Shimadzu calorimeter (Japan). The samples were buds and seeds of <em>Heracleum sosnowskyi</em> (hogweed) plants. The samples were placed in an aluminum pan with a volume of 0.1 cm<sup>3</sup>. The sample was cooled at a rate of 1 °C/min from +5 °C to -30 °C. The water crystallization temperature was determined at the beginning of the phase transition peak. After measurements, the material was dried at 105 °C to a constant dry mass.</p> <p>The following calculations were applied:</p> <ol> <li>A – DSC data (water crystallization temperature, ºC);</li> <li>B – wet weight sample (mg);</li> <li>C – dry weight sample (mg);</li> <li>D = B-C – (water content in sample, mg);</li> <li>E – DSC data (heat from water freezing, mJ);</li> <li>F= E× 335 – (frozen water in sample, mg);</li> <li>335 –The heat of frozen for wateris approximately (mJ/mg);</li> <li>G = D-F – (non-freezing water, mg);</li> <li>H = (100%/D) × F – (frozen water in sample, %);</li> <li>I = (D/B) ×100 – (water content in sample, %);</li> <li>J= D/C (mg H<sub>2</sub>O/mg dry weight sample).</li> </ol> <p> The results of the analysis are presented in the file «The_results_DSC_analysis_of_buds_seeds.xls».</p> <p>Measurements were carried out in September 2018. The samples were buds and seeds of <em>Heracleum sosnowskyi</em> (hogweed) plants. Geographical coordinates vegetation plants 61.645333, 50.733196.</p>
Freezing point of water, water content and proportion of freezing water in Heracleum sosnowskyi seedlings with radicles
<p><strong>Method plant tissue of analysis using differential scanning calorimetry (DSC)</strong></p> <p>Differential scanning calorimetry was used to assess the risk of tissue plant damage by low negative temperatures. We measured the freezing point of water, the water content and the proportion of freezing water in plant samples using the DSC – 60 Shimadzu calorimeter (Japan). The samples were seedlings with radicles of <em>Heracleum sosnowskyi</em> (hogweed) plants from under snow. The samples were placed in an aluminum pan with a volume of 0.1 cm<sup>3</sup>. The sample was cooled at a rate of 1 °C/min from +5 °C to -30 °C. The water crystallization temperature was determined at the beginning of the phase transition peak. After measurements, the material was dried at 105 °C to a constant dry mass.</p> <p>The following calculations were applied:</p> <ol> <li>A – DSC data (water crystallization temperature, ºC);</li> <li>B – wet weight sample (mg);</li> <li>C – dry weight sample (mg);</li> <li>D = B-C – (water content in sample, mg);</li> <li>E – DSC data (heat from water freezing, mJ);</li> <li>F= E× 335 – (frozen water in sample, mg);</li> <li>335 –The heat of frozen for water is approximately (mJ/mg);</li> <li>G = D-F – (non-freezing water, mg);</li> <li>H = (100%/D) × F – (frozen water in sample, %);</li> <li>I = (D/B) ×100 – (water content in sample, %);</li> <li>J= D/C (mg H<sub>2</sub>O/mg dry weight sample).</li> </ol> <p> </p> <p>The results of the analysis are presented in the file «The_results_DSC_analysis_of_seedlings_Heracl_sosn_2017.xls».</p> <p>Measurements were carried out in March 2017. The samples were seedlings with radicles of <em>Heracleum sosnowskyi</em> (hogweed) plants from under snow. Geographical coordinates vegetation plants 61.645333, 50.733196.</p>
Additional climate information for research paper «Ecological and Geographical Analysis of Distribution of Heracleum persicum, H. mantegazzianum and H. sosnowskyi on The Northern Limit of Its Invaded Range in Europe» submitted to Russian Journal of Biological Invasions
<p><strong>Additional climate information for research paper «Ecological and Geographical Analysis of Distribution of Heracleum persicum, H. mantegazzianum and H. sosnowskyi on The Northern Limit of Its Invaded Range in Europe» submitted to Russian Journal of Biological Invasions </strong></p>
Ballistic and anemochoric properties of Heracleum sosnowskyi seeds
<p>Баллистические и анемохорные показатели семян Heracleum sosnowskyi.<br> Растительная диаспора, собранная в Сыктывкаре с 5 по 13 октября 2019 <br> г. Сбор семян осуществлялся в четырех точках: ул. Петрозаводская., 120 (га, <br> гг); ул. Колчева., 23 (ТН); ул. Карла Маркса, д., d. 145 (SJ); припаркуйтесь к ним.<br> Киров (СВ).</p> <p>Сбор данных осуществлялся студентами Сыктывкарского государственного университета имени Питирима Сорокина: Газизовой Ольгой, Голке Григорием, Гориновой Анастасией, Васильевым Александром, Серебряковой Валерией, Смотриной Юлией, Турьевой Евой Натальей.</p>
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>
Ballistic and anemochoric characteristics of Heracleum sosnowskyi seeds (2021)
<pre>Ballistic and anemochoric characteristics of Heracleum sosnowskyi seeds in the vicinity of the city of Syktyvkar (2021)</pre>
Depth of occurrence of Heracleum sosnowskyi plant buds in the soil
<p>The depth of occurrence of the buds of the <em>Heracleum sosnowskyi</em> in soils is described. The buds were located at a depth of 2 to 10 cm from the soil surface. The data were collected on November 1, 2021 in the vicinity of Syktyvkar (coordinates of the collection point 61.638683, 50.832440).</p>
Figure 3 from: Chadin I, Dalke I, Zakhozhiy I, Malyshev R, Madi E, Kuzivanova O, Kirillov D, Elsakov V (2017) Distribution of the invasive plant species Heracleum sosnowskyi Manden. in the Komi Republic (Russia). PhytoKeys 77: 71-80. https://doi.org/10.3897/phytokeys.77.11186
Figure 3 - The prediction map of Heracleum sosnowskyi habitats prepared with the species distribution model based on bioclaimatic predictors. The borders of Plot 2 within which the model prediction was made. The colour scale shows the probability Heracleum sosnowskyi presence.
Figure 2 from: Chadin I, Dalke I, Zakhozhiy I, Malyshev R, Madi E, Kuzivanova O, Kirillov D, Elsakov V (2017) Distribution of the invasive plant species Heracleum sosnowskyi Manden. in the Komi Republic (Russia). PhytoKeys 77: 71-80. https://doi.org/10.3897/phytokeys.77.11186
Figure 2 - The prediction map of Heracleum sosnowskyi habitats prepared with the species distribution model based on vegetation cover map, nearest road proximity map, proximity map to the borders of agricultural areas. The colour scale shows the probability Heracleum sosnowskyi presence.
Figure 1 from: Chadin I, Dalke I, Zakhozhiy I, Malyshev R, Madi E, Kuzivanova O, Kirillov D, Elsakov V (2017) Distribution of the invasive plant species Heracleum sosnowskyi Manden. in the Komi Republic (Russia). PhytoKeys 77: 71-80. https://doi.org/10.3897/phytokeys.77.11186
Figure 1 - Study area. Red points indicate occurrences of Heracleum sosnowskyi described in the data paper.
Fig. 1 in Heracleum Sosnowskyi Manden. Monitoring In Protected Areas - A Case Study In Rēzekne Municipality, Latvia
Fig. 1. Studied sites in Rēzekne municipality. LKS-92 coordinate system. Due to the large differences among the studied sites, small sites are not visible in the map (Author: E. Tripāne).
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