White-tailed Deer (<i>Odocoileus virginianus</i>) Disperse Seeds of the Invasive Shrub, Amur Honeysuckle (<i>Lonicera maackii</i>)

Castellano, Steven M.; Gorchov, David L.

doi:10.3375/043.033.0109

Cited by 40 publications

(24 citation statements)

References 21 publications

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“…White-tailed deer (Odocoileus virginianus Zimmermann) are known to browse on L. maackii foliage and ingest fruit while doing so; viable seeds are voided by the deer, thus aiding in long distance dispersal of seeds and dispersal to the interior of forests (Castellano and Gorchov 2013). Mice (Peromyscus spp.)…”

Section: Mechanisms Of Invasion For Amur Honeysucklementioning

confidence: 99%

“…Mice (Peromyscus spp.) are also known to disperse honeysuckle seeds but shorter distances relative to deer (Castellano and Gorchov 2013). The susceptibility of a forest to honeysuckle invasion is dependent upon the forest's successional stage, the degree of urbanization, frequency of disturbances, distance from other invaded areas, and the composition of its shrub layer.…”

Section: Mechanisms Of Invasion For Amur Honeysucklementioning

confidence: 99%

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Effects of invasive shrub honeysuckle (Lonicera maackii) and forest composition on bird communities in woodland stands.

Lynch

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Invasive species pose a threat to aquatic and terrestrial ecosystems by decreasing biodiversity (Didham et al. 2005). The mechanism by which invasive species negatively impact environments is typically through either the direct effect of increased dominance or the indirect effect of territory modification. Invasive plant species have the potential to affect both other flora and fauna when grown out of cultivation. Amur bush honeysuckle (Lonicera maackii) was brought to the United States from northeast Asia in 1898 as an ornamental plant intended for land restoration and to provide habitat for birds (Luken and Thieret 1996). The woody shrub has since escaped cultivation and is currently considered invasive in 27 states according to the USDA. Its early leaf phenology, production of copious red berries, allelopathic effects, and morphological plasticity provide Amur honeysuckle with a competitive advantage over native plants (Ingold and Craycraft 1983;Luken and Thieret 1996; McEwan et al. 2010). tree diversity, percent canopy cover, and mean tree height of forest stands will negatively correlate with honeysuckle density because of the life history traits of honeysuckle; 3b) the extent of anthropogenic influence will positively correlate with honeysuckle density because of the potential affinity of honeysuckle for more disturbed, urbanized habitats.In order to test the hypotheses, thirteen forest stands within the Louisville Metropolitan Area were selected. They had similar tree composition but varied in density of honeysuckle [six forest stands with Lonicera maackii present and seven stands with little to no honeysuckle]. Vegetation surveys and an assessment of anthropogenic impact were conducted at all stands. Bird surveys were performed at each stand once every vi season for two years by walking a one-kilometer trail and identifying birds visually and acoustically within 20 meters of either side of the trail. Multiple regression analyses using PROC MIXED of SAS examined the effects of honeysuckle density, tree diversity, mean tree height, percent canopy cover, and extent of anthropogenic influence on bird diversity (Goodnight 2015). Honeysuckle density (p = 0.0208) and anthropogenic influence (p = 0.0439) significantly negatively impacted bird diversity but these effects did not significantly vary seasonally. Urbanized forest stands cannot support a wide variety of bird species but rather only species adapted to urban conditions. As predicted, bird diversity had a positive correlation with percent canopy cover and mean tree height.However, these effects were not significant.Nonmetric multidimensional scaling (NMDS) ordination was used to quantify compositional aspects of forest stands into axis values to visualize the effects of honeysuckle density on bird species and families. Effects of the representative values of compositional components (axes) and honeysuckle density on abundance of the most abundant birds observed during the study and on bird families were analyzed using generalized Poisson regression for e...

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Section: Mechanisms Of Invasion For Amur Honeysucklementioning

confidence: 99%

Section: Mechanisms Of Invasion For Amur Honeysucklementioning

confidence: 99%

Effects of invasive shrub honeysuckle (Lonicera maackii) and forest composition on bird communities in woodland stands.

Lynch

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“…Much is known about the population structure, dispersal, and ecosystem effects of L. maackii as well as the morphological and physiological plasticity of seedling and juvenile plants (e.g., Luken et al 1997, Gorchov and Trisel 2003, Bartuszevige and Gorchov 2006, Poulette and Arthur 2012, Castellano and Gorchov 2013. Luken et al (1995a) examined the branch architecture plasticity of L. maackii in open-and closed-canopy light environments, finding the open-grown shrubs able to reach larger heights and diameters due to changing ratios of long to short shoots and continuous growth habit.…”

Section: à2mentioning

confidence: 99%

Invasion of an Exotic Shrub into Forested Stands in an Agricultural Matrix

Gorchov

Henry

Frank

2014

Invasive plant sci. manag.

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We investigated the relative importance of stand and landscape characteristics in the invasion of a nonnative shrub, Amur honeysuckle, in 40 woodlots in an agricultural matrix in southwest Ohio. We quantified stand characteristics that could influence invasibility, the intrinsic susceptibility of an area to invasion, including woodlot size, perimeter-to-area ratio, tree basal area, and stand age. At the landscape scale we included factors that potentially influence propagule rain (the contribution of seeds from individuals established outside the focal area), including the land cover and road density in a 1,500-m buffer around each woodlot, as well as the extent to which the perimeter was forested at two points in the past, and latitude (based on an apparent south-to-north invasion in this region). Based on stepwise regression, we determined that honeysuckle cover was determined primarily by landscape parameters, particularly the percent of the buffer comprised of cropland. Woodlots surrounded by more cropland had less honeysuckle cover, which we attribute to paucity of nearby seed sources and/or minimal movement of seed-dispersing animals. From these findings, we argue that impediments to propagule rain are more important in shaping the invasion of this exotic shrub than are characteristics of the woodlots themselves, i.e., community invasibility.

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“…Seeds are primarily dispersed by birds, including American robins (Turdus migratorius), cedar waxwings (Bombycilla cedrorum), European starlings (Sturnus vulgaris), hermit thrushes (Catharus guttatus), and northern mockingbird (Mimus polyglottos) (Ingold and Craycraft 1983;. White-tailed deer (Odocoileus virginianus) may also act as long distance dispersers (Castellano and Gorchov 2013). In its native range, L. maackii is commonly found in habitats characterized by high light availability and disturbance, such as open woodlands, floodplain forests, and scrub communities .…”

Section: Species Description and Habitatmentioning

confidence: 99%

Earthworm, microbial biomass, and leaf litter decay responses after invasive honeysuckle shrub removal from urban woodlands.

Pipal¹

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White-tailed Deer (Odocoileus virginianus) Disperse Seeds of the Invasive Shrub, Amur Honeysuckle (Lonicera maackii)

Cited by 40 publications

References 21 publications

Effects of invasive shrub honeysuckle (Lonicera maackii) and forest composition on bird communities in woodland stands.

Effects of invasive shrub honeysuckle (Lonicera maackii) and forest composition on bird communities in woodland stands.

Invasion of an Exotic Shrub into Forested Stands in an Agricultural Matrix

Earthworm, microbial biomass, and leaf litter decay responses after invasive honeysuckle shrub removal from urban woodlands.

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