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10 results for “invasive vines”
An experimental application of Hypena opulenta as a biocontrol agent for the invasive vine Vincetoxicum rossicum
<p>1. Pre-release testing for biological control agents is focused primarily on assessment of host-range specificity and safety of potential agents. Agent impact is considered pre-release, however the ultimate assessment of an agent must occur following release in the field under the target population levels and conditions of the invaded ecosystems. The invasive Eurasian vine, Vincetoxicum rossicum, has spread aggressively through its invaded range of eastern North America since its initial introduction in the late 1800's. In laboratory tests, the Eurasian moth Hypena opulenta has shown great promise as a potential control agent for V. rossicum.</p> <p>2. We were interested in the defoliating ability of H. opulenta and its subsequent effect on the seed production of V. rossicum under field conditions. To examine this, we established a field site near Kirkfield, Ontario that consisted of meadow and forest understory plots, both of which were highly invaded by V. rossicum.</p> <p>3. We report highly significant feeding by H. opulenta in both light conditions. Unexpectedly, we observed a significant increase in seed production following folivory in shade conditions. We observed no significant effect of larval folivory on seed production under sun conditions, where V. rossicum seed production is greater by a factor of ten as compared to shade conditions.</p> <p>4. Synthesis and application: It is unclear how continuous exposure to folivory by H. opulenta will affect mature V. rossicum stands, although it might be expected that such populations would invest in defenses to herbivory, possibly at the expense of reproductive output. In order to better understand if V. rossicum populations in either light condition could exhibit longer-term compensatory growth in response to folivory, further experimental work is needed that examines inter-annual variability in V. rossicum reproduction at variable H. opulenta densities.</p>
A tale of three vines: current and future threats to wild Eurasian grapevine by vineyards and invasive rootstocks
<p>This dataset has been used for the paper <em>A tale of three vines: current and future threats to wild Eurasian grapevine by vineyards and invasive rootstocks</em> by Petitpierre et al.</p> <p>It contains the species distribution of five <em>Vitis</em> species in North America and Europe (<em>Vitis acerifolia</em>, <em>Vitis aestivalis</em>, <em>Vitis rupestris</em>, <em>Vitis riparia </em>and <em>Vitis berlandieri</em>), so as the distribution of the Eurasian wild grapevine (<em>Vitis vinifera</em> ssp. <em>sylvestris</em>) and cultivated grapevine in Europe (<em>Vitis vinifera</em> ssp. <em>vinifera</em>). 40 bioclimatic variables are associated to these distributions. These variables were derived from the Climond dataset (Kriticos et al., 2012).</p> <p>Species distribution data were gathered using several databases and sources. The list of the different sources is cited in methods section of the related manuscript. The distribution of each <em>Vitis</em> taxa was rasterized at a resolution of 0.167° (coordinate reference system WGS84; EPSG:4326). X and Y coordinates correspond to the center of each cell. Environmental variables were extracted from the CliMond database (Kriticos et al., 2012) for each site. It consists of a set of 40 bioclimatic variables at a resolution of 0.167°, grouped into 4 categories: temperature, precipitation, moisture, and solar radiation. The description of these 40 variables can be found in the original CliMond publication (Kriticos et al., 2012).</p> <p> </p> <p>Each file contains the distribution of one Vitis taxa.</p> <p>v_ace.csv contains the distribution of Vitis acerifolia in North America.</p> <p>v_aes.csv contains the distribution of Vitis aestivalis in North America.</p> <p>v_ber.csv contains the distribution of Vitis berlandieri in North America.</p> <p>v_rip.csv contains the distribution of Vitis riparia in North America.</p> <p>v_rup.csv contains the distribution of Vitis rupestris in North America.</p> <p>v_root.csv contains the distribution of the American vitis taxa (Vitis acerifolia, Vitis aestivalis, Vitis berlandieri, Vitis riparia and Vitis rupestris) in Europe.</p> <p>v_vin.csv contains the distribution of the vineyards (i.e. Vitis vinifera ssp. vinifera, the cultivated grapevine) in Europe.</p> <p>v_syl.csv contains the distribution of the vineyards (i.e. Vitis vinifera ssp. sylvestris, the wild European grapevine) in Europe.</p> <p><strong>Reference</strong><br> Kriticos, D.J., Webber, B.L., Leriche, A., Ota, N., Macadam, I., Bathols, J., Scott, J.K., 2012. CliMond: Global high-resolution historical and future scenario climate surfaces for bioclimatic modelling. Methods Ecol. Evol. 3, 53–64. https://doi.org/10.1111/j.2041-210X.2011.00134.x</p> <p>GBIF data for Vitis vinifera ssp. vinifera. GBIF.org (11 November 2020) GBIF Occurrence Download https://doi.org/10.15468/dl.hacmjx<br> GBIF data for Vitis ssp. sylvestris. GBIF.org (11 November 2020) GBIF Occurrence Download https://doi.org/10.15468/dl.qu7txv<br> GBIF data for Vitis berlandieri. GBIF.org (11 November 2020) GBIF Occurrence Download https://doi.org/10.15468/dl.w6dt7r<br> GBIF data for Vitis riparia. GBIF.org (11 November 2020) GBIF Occurrence Download https://doi.org/10.15468/dl.aqh55u<br> GBIF data for Vitis acerifolia. GBIF.org (11 November 2020) GBIF Occurrence Download https://doi.org/10.15468/dl.csd7wc<br> GBIF data for Vitis aestivalis. GBIF.org (11 November 2020) GBIF Occurrence Download https://doi.org/10.15468/dl.f5jfzf<br> GBIF data for Vitis rupestris. GBIF.org (02 September 2020) GBIF Occurrence Download https://doi.org/10.15468/dl.gqjm7w</p> <p> </p>
An experimental application of Hypena opulenta as a biocontrol agent for the invasive vine Vincetoxicum rossicum
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High spatial resolution mapping identifies habitat characteristics of the invasive vine Antigonon leptopus on St. Eustatius (Lesser Antilles)
<p>On the Caribbean island of St. Eustatius, Coralita (<i>Antigonon leptopus</i>)<i> </i>is an aggressive invasive vine posing major biodiversity conservation concerns. The generation of distribution maps can address these conservation concerns by helping to elucidate the drivers of invasion. We test the use of support vector machines to map the distribution of Coralita on St. Eustatius at high spatial resolution and use this map to identify potential landscape and geomorphological factors associated with Coralita presence. This latter step was performed by comparing the actual distribution of Coralita patches to a random distribution of patches. To train the support vector machine algorithm, we used three vegetation indices and seven texture metrics derived from a 2014 WorldView-2 image. The resulting map shows that Coralita covered 3.18% of the island in 2014, corresponding to an area of 64 ha. The mapped distribution was highly accurate, with 93.2% overall accuracy (Coralita class producer's accuracy: 76.4%, user's accuracy: 86.2%). Using this classification map, we found that Coralita is not randomly distributed across the landscape, occurring significantly closer to roads and drainage channels, in areas with higher accumulated moisture, and on flatter slopes. Coralita was found more often than expected in grasslands, disturbed forest and urban areas, but was relatively rare in natural forest. These results highlight the ability of high spatial resolution data from sensors such as WorldView-2 to produce accurate invasive species, providing valuable information for predicting current and future spread risks and for early detection and removal plans.</p>
Supplementary material 3 from: Bernich A, French K, Bedward M (2024) Assessing the invasion potential of five common exotic vine species in temperate Australian rainforests. NeoBiota 90: 79-96. https://doi.org/10.3897/neobiota.90.110659
The dry weight of the individuals used as the initial values to calculate relative growth rates for each species
Supplementary material 2 from: Bernich A, French K, Bedward M (2024) Assessing the invasion potential of five common exotic vine species in temperate Australian rainforests. NeoBiota 90: 79-96. https://doi.org/10.3897/neobiota.90.110659
Difference in mean and 95% bounds, as well as the percentage overlap of mean values reported as a probabilty (Probability higher than LL) for the seven species grown in the study
Supplementary material 1 from: Bernich A, French K, Bedward M (2024) Assessing the invasion potential of five common exotic vine species in temperate Australian rainforests. NeoBiota 90: 79-96. https://doi.org/10.3897/neobiota.90.110659
Difference in mean and 95% bounds, as well as the percentage overlap of mean values reported as a probabilty (Probability higher) between species for the physiological measurements taken
High spatial resolution mapping identifies habitat characteristics of the invasive vine Antigonon leptopus on St. Eustatius (Lesser Antilles)
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Supplementary material 1 from: Buru JC, Osunkoya OO, Dhileepan K, Firn J, Scharaschkin T (2019) Eco-physiological performance may contribute to differential success of two forms of an invasive vine, Dolichandra unguis-cati, in Australia. NeoBiota 46: 23-50. https://doi.org/10.3897/neobiota.46.33917
: Data type: occurrence
Supplementary material 1 from: Foster JD, Ellis AG, Foxcroft LC, Carroll SP, Le Roux JJ (2019) The potential evolutionary impact of invasive balloon vines on native soapberry bugs in South Africa. NeoBiota 49: 19-35. https://doi.org/10.3897/neobiota.49.34245
: Data type: measurements
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OpenNeuro
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