Invertebrate Abundance, Biomass, and Richness Associated with an Exotic Invasive Shrub (Lonicera morrowii A. Gray)

• 作者: James T. Anderson Jason P. Love
• 来源期刊: 自然资源(英文)
• 学科: 数学
• 关键词: Invertebrate Biomass Lonicera morrowii Morrow’s Honeysuckle Southern Arrowwood Terrestrial Invertebrates Viburnum recognitum
• 年，卷（期）: 2020,（7）
• 页码范围: 257-282
• 页数: 26页
• 分类号: O17

摘要

Exotic bush honeysuckles (</span><i><span style="font-family:Verdana;">Lonicera</span></i><span style="font-family:Verdana;"> spp.) are becoming increasingly common in the eastern and mid-western United States, but little is known about their impacts on invertebrates. We used a modified leaf vacuum to sample invertebrates in the shrub strata and understory of three shrub types (and open plots </span><span><span style="font-family:Verdana;">in the understory): single Morrow’s honeysuckle (</span><i><span style="font-family:Verdana;">L</span></i><span style="font-family:Verdana;">. </span><i><span style="font-family:Verdana;">morrowii</span></i><span style="font-family:Verdana;"> A. Gray) shrubs, </span></span><span style="font-family:Verdana;">single native southern arrowwood (</span><i><span style="font-family:Verdana;">Viburnum</span></i></span></span><span><span><i><span style="font-family:""> </span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">recognitum</span></i></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;"> Fernald) shrubs, and dense thickets of Morrow’s honeysuckle, in southwestern PA, USA during 2004 and 2005. We also assessed the degree of </span><a name="OLE_LINK26"></a><a name="OLE_LINK25"></a><span style="font-family:Verdana;">herbivory</span><span style="font-family:Verdana;"> on the two species of shrubs. Within the shrub strata, invertebrate biomass was lower in southern arrowwood shrubs, but there was no difference in invertebrate abundance or family richness. Invertebrate abundance and richness were lowest </span><span style="font-family:Verdana;">in August, but there was no difference in biomass among the months. Invertebrate</span><span style="font-family:Verdana;"> abundance, biomass, and family richness were lowest in the understory below dense thickets of Morrow’s honeysuckle. Overall, the percent cover of herbs was the proximate factor responsible for driving pat