| [dust removal effect of urban tree species in harbin]. | dust removal by plants was proposed as an important basis of designing urban green space system for future urbanization. dust removal measurement and leaf surface electron-microscopic scanning were taken for 28 tree species in harbin city. the results showed that there were obviously different effects of dust removal among different tree species. picea koraiensis and juniperus rigida were the ideal conifers for dust removal, and their dust removal abilities were 5.7 g.m-2 and 4.4 g.m-2 after 4 w ... | 2002 | 12561175 |
| the invasive shrub, lonicera maackii, reduces growth and fecundity of perennial forest herbs. | effects of invasive plant species on native plant species are frequently assumed or inferred from comparisons, but rarely quantified experimentally. such quantification is important to assessing risks and impacts of invasives. we quantified the effects of lonicera maackii, an exotic shrub invasive in many eastern north american forests, on survival, growth, and reproduction of three perennial herbs: allium burdickii, thalictrum thalictroides , and viola pubescens. we predicted that the spring ep ... | 2004 | 15024639 |
| [karyotype analysis of lonicera japonica and l. maackii]. | to study lonicera japonica thunb. and lonicera maackii (rupr. ) maxim. chromosome number, karyotype, volume. | 2005 | 16107023 |
| [impact of soil cadmium contamination on chlorophyll fluorescence characters and biomass accumulation of four broad-leaved tree species seedlings]. | in a greenhouse pot experiment,a gradient of soil cd concentration was established by adding 0,50,100 and 200 mg cdcl2 x kg(-1) air-dried soil, and the seedlings of one-year-old rosa davurica, philadelphus schrenkii, acer mandshurica and lonicera maackii were transplanted. the measurement of the seedlings' chlorophyll fluorescence parameters and biomass accumulation after 70 days of transplanting showed that with increasing soil cd content, all the test tree species had a decrease of fv/fm, phi( ... | 2006 | 16883798 |
| [morphological-ecological characters and growth patterns of main tree species leaves in urban forest of shenyang]. | the study with statistic and multivariate analyses showed that the main meteorological factors affecting the growth and development rhythms of main tree species leaves in urban forest of shenyang were > or = 5 degrees c accumulated temperature, accumulated sunshine hours, and mean temperature in the middle ten days of each phenological period. the meteorological factors needed by the tree species varied with their phenological period. necessary low temperature and ci were required in germination ... | 2006 | 17269315 |
| phenolic metabolites in leaves of the invasive shrub, lonicera maackii, and their potential phytotoxic and anti-herbivore effects. | lonicera maackii is an invasive shrub in north america for which allelopathic effects toward other plants or herbivores have been suspected. we characterized the major phenolic metabolites present in methanol extracts of l. maackii leaves. in addition, we examined the effects of methanol-water extracts of l. maackii leaves on seed germination of a target plant species and on feeding preference and growth rate of a generalist insect herbivore. a total of 13 individual major and minor compounds we ... | 2008 | 18213496 |
| anatomy of leaf abscission in the amur honeysuckle (lonicera maackii, caprifoliaceae): a scanning electron microscopy study. | lonicera maackii (rupr.) maxim. (amur honeysuckle) is native to asia and an important ornamental in china. however, the anatomy of leaf abscission (shedding) in l. maackii had not been studied previously. such work is needed not only because knowledge of the leaf abscission process is important for a horticultural species like l. maackii but also because leaf abscission is probably the least understood abscission process, as it occurs so rapidly. therefore, our objective was to use scanning elec ... | 2010 | 20512386 |
| invasive honeysuckle eradication reduces tick-borne disease risk by altering host dynamics. | despite the ubiquity of invasive organisms and their often deleterious effects on native flora and fauna, the consequences of biological invasions for human health and the ecological mechanisms through which they occur are rarely considered. here we demonstrate that a widespread invasive shrub in north america, amur honeysuckle (lonicera maackii), increases human risk of exposure to ehrlichiosis, an emerging infectious disease caused by bacterial pathogens transmitted by the lone star tick (ambl ... | 2010 | 20937859 |
| extracts of the invasive shrub lonicera maackii increase mortality and alter behavior of amphibian larvae. | water-soluble phytochemicals produced by invasive plants may represent novel elements of invaded ecosystems that can precipitate a variety of direct and indirect effects on native organisms. phenolic compounds in particular are a common plant defense, and these compounds may have disproportionate impacts on amphibians compared to other taxa. we coupled an exploration of invasive plant extract effects on larvae of four amphibian species (the salamander ambystoma maculatum, the toad anaxyrus ameri ... | 2010 | 20938785 |
| invasive plant species alters consumer behavior by providing refuge from predation. | understanding the effects of invasive plants on native consumers is important because consumer-mediated indirect effects have the potential to alter the dynamics of coexistence in native communities. invasive plants may promote changes in consumer pressure due to changes in protective cover (i.e., the architectural complexity of the invaded habitat) and in food availability (i.e., subsidies of fruits and seeds). no experimental studies have evaluated the relative interplay of these two effects. ... | 2011 | 21221650 |
| invasive plant alters ability to predict disease vector distribution. | risk models for vector-borne diseases rely on accurate quantification of the relationship between vector abundance and habitat, but this relationship can be obscured if habitats are modified by invasive species in ways that alter vector behavior but are undetectable in remotely sensed data. at a forest in eastern missouri we assessed whether the presence of an invasive shrub, amur honeysuckle, lonicera maackii, affects oviposition by treehole mosquitoes, aedes triseriatus, a primary vector of la ... | 2011 | 21563565 |
| Dynamic selective environments and evolutionary traps in human-dominated landscapes. | Human activities can alter selective environments in ways that can reduce the usefulness of certain ornamental traits as honest signals of individual quality and, in some cases, may create evolutionary traps, where rapid changes in selective environments result in maladaptive behavioral decisions. Using the sexually dichromatic, socially monogamous Northern Cardinal (Cardinalis cardinalis) as a model, we hypothesized that urbanization would erode the relationship between plumage coloration and r ... | 2011 | 21939074 |
| seed bank survival of an invasive species, but not of two native species, declines with invasion. | soil-borne seed pathogens may play an important role in either hindering or facilitating the spread of invasive exotic plants. we examined whether the invasive shrub lonicera maackii (caprifoliaceae) affected fungi-mediated mortality of conspecific and native shrub seeds in a deciduous forest in eastern missouri. using a combination of l. maackii removal and fungicide treatments, we found no effect of l. maackii invasion on seed viability of the native symphoricarpos orbiculatus (caprifoliaceae) ... | 2011 | 22006283 |
| [dynamics and modeling of water content of ten shrub species in their growth period in maoershan mountain region of northeast china]. | based on the two successive years observation of the water content of ten representative shrub species in maoershan mountain region of northeast china, this paper studied the dynamics of the water content of these shrub species during their growth period and related affecting factors, with the prediction models of the shrub water content established. for the ten shrub species, their minimal water content during growth period was higher than 100% , and most of the species had a water content high ... | 2012 | 23479872 |