U.S. Forest Service, Northeastern Area State & Private Forestry, Durham Field Office, 271 Mast Road, Durham, NH 03824. USA.
J Econ Entomol. 2011 Jun;104(3):879-88. doi: 10.1603/ec10358.
Two studies were conducted to determine the effect of habitat selection and trap placement on catches of Scolytidae and Cerambycidae (Coleoptera) in northeastern U.S. forests. In a nonreplicated case study, four habitat types--closed canopy hardwood stand, closed canopy conifer stand, a low-intensity thinned Pinus strobus L. stand, and a high-intensity thinned P. strobus stand--were surveyed using alpha-pinene, ethanol, ipsenol, ipsdienol, and lanierone. Average trap catches, species richness, and the number of unique species captured were all highest in at least one of the thinned habitats. A second experiment that was replicated evaluated the placement of traps in relation to habitat patches. Semiochemical-baited traps (alpha-pinene and ethanol) were placed under a closed canopy forest, along an edge, and in a clearing and tested for effects on Scolytidae and Cerambycidae trap catches. Abundance and species richness were generally higher in the closed canopy and edge placements compared with traps in the open area. The highest number of unique species were captured in the edge and clearing.
两项研究旨在确定生境选择和诱捕器放置对美国东北部森林中的小蠹科和天牛科（鞘翅目）捕获量的影响。在一项非重复案例研究中，使用α-蒎烯、乙醇、异戊二烯醇、异戊二烯二醇和拉尼尔酮对四种生境类型（郁闭硬木林、郁闭针叶林、低强度间伐的欧洲赤松林和高强度间伐的欧洲赤松林）进行了调查。在至少一种间伐生境中，平均诱捕器捕获量、物种丰富度和捕获的特有物种数量均最高。第二项重复实验评估了诱捕器与生境斑块的位置关系。用半挥发性化学物质（α-蒎烯和乙醇）诱捕的诱捕器分别放置在郁闭林冠下、林缘和林中空地，并测试对小蠹科和天牛科诱捕器捕获量的影响。与开阔区域的诱捕器相比，在郁闭林冠和林缘的放置处的丰度和物种丰富度通常更高。在林缘和林中空地捕获到的特有物种数量最多。
