SAIN Invasive Plant Pests Resource Collection for: English ivy
Species (scientific name): Hedera helix
| Title: Topographic alterations, forest structure, and invasion by English ivy (Hedera helix L.) in the Rock Creek floodplain, Washington, D.C. |
| Author: Thomas-L-K-Jr. |
| Source: Natural-Areas-Journal. April, 1998; 18 (2) 164-168. |
| Source Type: Journal |
| Publication Date: 1998 |
| Abstract: Topographic alteration may encourage invasion of the exotic species English ivy (Hedera helix L.) in floodplain forest. To test that hypothesis, I designated 16 sampling stations on the floodplain of Rock Creek Park in Washington, D.C. Eight of the stations were on the spoil ridge that resulted from construction of a sewer line in 1927 (median height = 22 cm). In 1983 the ground layer of half of each station on the spoil ridge and on the "flat" near the ridge were dominated by English ivy; other stations were ivy-free. By 1989 English ivy had invaded four of the ivy-free stations. This increase in ivy abundance was not statistically significant on the "flat" but was significant (chiY,ldf2, p<0.1) on the ridge. There was no significant difference (chiY,ldf2, P>0.1) between ivy rooting depth on the sewer ridge and on the flat, indicating that good soil conditions were present in both places. Basal area of the trees dominating the sites differed: the "flat" had 69 m2 ha-1 while the spoil ridge had 59 m2 ha-1. The results support the hypothesis that a slight alteration of topography influences patterns of invasion by English ivy. |
| Title: Quantitative study and modelling of the litter decomposition in a European alluvial forest: Is there an influence of overstorey tree species on the decomposition of ivy litter (Hedera helix L.). |
| Author: Badre-Bouchra; Nobelis-Photis; Tremolieres-Michele. |
| Source: Acta-Oecologica. Nov.-Dec., 1998; 19 (6) 491-500. |
| Source Type: Journal |
| Publication Date: 1998 |
| Abstract: The influence on the decomposition rate of ivy litter (Hedera helix L.) of three ligneous overstorey species (oak, Quercus robur L., white poplar, Populus alba and ash, Fraxinus excelsior L.) that support ivy was studied in an alluvial hardwood forest. The ivy provides an abundant litter at the end of spring. The decomposition of ivy litter and the nutrient release rate were analyzed over four months during the growing season of the canopy trees, the hypothesis being that throughfall could slow down the mass loss rate of ivy depending on the support species. Mathematical models for mass loss and nutrient (P, N, K and Mg) release rates were developed. Mass loss rate and the release rate of magnesium, nitrogen and phosphorus show significant differences depending on species whereas no influence of species was observed on the release rate of potassium. The results illustrate the significant effect of oak compared to ash and poplar in slowing down mass loss rate and nitrogen, phosphorus and magnesium release rates. The mass loss rate over time under the three species followed the proposed exponential model, whereas the release rates of phosphorus and magnesium did not follow this model. This model is fitted to the data in two cases out of three for potassium. Magnesium and potassium are released more rapidly when nitrogen accumulates and the phosphorus content does not change significantly. No species X date interaction was observed, except in the case of magnesium. The species effect is interpreted as an effect of composition of throughfalls and presence or absence of inhibitory substances such as phenolic compounds. |
| Title: Effects of ozone on morpho-anatomy and physiology of Hedera helix. |
| Author: Della-Torre-G {a}; Ferranti-F; Lupattelli-M; Pocceschi-N; Figoli-A; Nali-C; Lorenzini-G. |
| Source: Chemosphere-. Feb., 1998; 36 (4-5) 651-656. |
| Source Type: Journal |
| Publication Date: 1998 |
| Abstract: Chronic (60 ppb, 30 days, 5 h/d) and acute (200 ppb, 5 h) treatments with ozone were performed on ivy plants. Photosynthetic pigments decreased following the treatments, especially the chronic one. The fatty acids composition of cuticle was altered. The activity of glyoxalase I and II increased significantly following the acute treatment. Both old and recently expanded leaves showed an increase in diffusion resistance and a reduction of the CO2 assimilatory activity, which was ascribed to stomatal constrains. The ecological implications of these alterations are discussed. |
| Title: The effect of Phytophthora palmivora on Hedera helix L. at different temperatures. |
| Author: Gislerod-Hans-R {a}; Myster-Jardar; Semb-Lars. |
| Source: Norwegian-Journal-of-Agricultural-Sciences. 1996; 10 (2) 153-158. |
| Source Type: Journal |
| Publication Date: 1996 |
| Abstract: Phytophthora palmivora caused a root rot of ivy (Hedera helix L.) 'Ester' at average diurnal temperatures between 20 and 30 degree C, but not at 15 degree C in a flow/ebb irrigation system. Root damage by P. palmivora was fastest developed at 25 degree C, and the greatest injury occurred also at this temperature. Wilting of shoots was correlated with root rot. Root rot was more severe during the summer than the winter. Control of P. palmivora root rot on ivy by maintaining plants at low temperatures is not acceptable in commercial production, because plant growth is reduced too much. |
| Title: TNC Wildland Weeds Management and Research Weed Report. TNC 1995. |
| Author: TNC. |
| Source: R |
| Source Type: NA |
| Publication Date: 1995 |
| Abstract: |
| Title: Structural changes and permeability of ivy (Hedera helix L.) leaf cuticles in relation to leaf development and after selective chemical treatments. |
| Author: Viougeas-M-A; Rohr-R; Chamel-A. |
| Source: New-Phytologist. 1995; 130 (3) 337-348. |
| Source Type: Journal |
| Publication Date: 1995 |
| Abstract: The fine structure of ivy leaf cuticles was investigated as a function of leaf development before and after cuticle isolation as well as after selective extraction of cuticle components. Cuticle mass increased with increasing age from 234.3 to 539.1 mu-g cm-2. Waxes increased from 12.3 to 18.6% of cuticle mass from young to old leaves. However, percentages of cutin and non-lipid constituents did not vary significantly with leaf age. They represented approx. 58 and 26% of the cuticle mass, respectively. Cuticle thickness determined from electron and light microscopy increased 12-fold during leaf growth to reach 4.25 mu-m for mature leaves. Transmission electron microscopy of transverse sections of non-isolated and isolated cuticles showed an outer lamellate zone gradually merging from an inner reticulate zone the thickness of which increased with leaf growth. The lamellate zone appeared very early (in vitro unexpanded leaf) and was characterized by a constant thickness (0.2 mu-m). Cuticle lamellation seemed to disappear after extraction of soluble cuticular wax, which confirmed intracuticular wax localization in lamellae. Electron-dense fibrillae observed in the reticulate zone disappeared after acid hydrolysis showing that they are made of non-lipid components. X-ray diffraction confirmed the presence of crystalline structures and revealed a cuticle disorganization after wax extraction. Permeability measurements showed an increase rather than a decrease in glyphosate and isoproturon diffusion through cuticles with increasing leaf age, suggesting that the main barrier to diffusion is the outer lamellate zone. A considerable increase in isoproturon penetration through cuticles resulted from the wax extraction, demonstrating the major role of wax in the control of cuticular permeability to this herbicide. |
| Title: English ivy (Hedera helix) response to postemergence herbicides. |
| Author: Derr-Jeffrey-F. |
| Source: Journal-of-Environmental-Horticulture. 1993; 11 (2) 45-48. |
| Source Type: Journal |
| Publication Date: 1993 |
| Abstract: One application of Roundup at 2.2 or 4.5 kg ai/ha (2.0 or 4.0 lb/A) with or without surfactant, Weedar 64 (2.4-D amine) at 1.1 kg ae/ha (1.0 lb/A), Banvel at 0.6 kg ae/ha (0.5 lb/A), or Garlon 3A at 0.6 kg ae/ha (0.5 lb/A) reduced new shoot growth of English ivy 10 weeks after treatment by 46 to 80%. Roundup at 4.5 kg/ha plus non-ionic surfactant was the only single application treatment that reduced older shoot growth of English ivy (41% reduction) 19 weeks after treatment. English ivy outgrew injury from all other single application treatments. Two applications of Weedar 64 completely controlled English ivy. Two applications of Roundup at 4.5 kg/ha (4.0 lb/A), with or without surfactant, eliminated new shoot growth 11 weeks after treatment, and reduced total shoot weight by approximately 60% 15 weeks after treatment. English ivy shoot weight decreased when the rate of Roundup was increased from 2.2. to 4.5 kg/ha (74 versus 92% reduction) 7 weeks after treatment, but adding a non-ionic surfactant did not further reduce shoot weight. Two applications of Banvel or Garlon (52 and 67% reduction, respectively, 7 weeks after treatment) were less effective than two applications of Roundup at 4.5 kg/ba (4.0 lb/A) in reducing English ivy shoot growth. |
| Title: Control of English ivy (Hedera helix) in Sherbrooke forest - a practical experience. |
| Author: Freshwater, V. |
| Source: Plant Protection Quarterly 6(3):127. |
| Source Type: Journal |
| Publication Date: 1991 |
| Abstract: NA |
| Title: Control of ornamentals gone wild: pampas grass, bamboo, english and algerian ivy. |
| Author: Elmore, C.L., W.D. Hamilton and L.R. Coatello. |
| Source: Proceedings 38th Annual California Weed. |
| Source Type: Paper |
| Publication Date: 1986 |
| Abstract: NA |
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