Arthropods Associated with Invasive (Rosales: Rhamnaceae): Implications for Invasive Plant and Insect Management.

The invasive shrub glossy buckthorn () has been progressively colonizing the Northeastern United States and Southeastern Canada for more than a century. To determine the dominant arthropod orders and species associated with , field surveys were conducted for two years across 16 plots within the Allegheny National Forest, Pennsylvania, USA. Statistical analyses were employed to assess the impact of seasonal variation on insect order richness and diversity.

Precision Detection and Assessment of Ash Death and Decline Caused by the Emerald Ash Borer Using Drones and Deep Learning.

Emerald ash borer () is an invasive pest that has killed millions of ash trees ( spp.) in the USA since its first detection in 2002. Although the current methods for trapping emerald ash borers (e.

Effects of Forest Management on the Insect Assemblage of Black Cherry () in the Allegheny National Forest.

Over the last decade, the Allegheny National Forest (ANF) in the USA has experienced issues with the regeneration of black cherry (). This study was conducted to investigate the effects of silvicultural treatment on the insect communities that may affect black cherry pollination and regeneration. We conducted a 2-year study to compare the abundance, richness, and diversity of insects in unmanaged, shelterwood seed-tree, and shelterwood clear-cut stands.

Characterization of the Insect Assemblage and Associated Floral Volatiles of Black Cherry ().

Black cherry is an ecologically important high-value wood. A decline of its regeneration has been reported in the USA, which could be associated with a lack of pollination. This study was conducted to identify insects visiting black cherry flowers, to determine whether insects captured on the flowers carry black cherry pollen and to identify the volatile organic compounds (VOCs) emitted by flowers of black cherry.

Phenology of Hemlock Woolly Adelgid (Hemiptera: Adelgidae) in the Central Appalachian Mountains, USA.

The ability to predict key phenological stages of insect pests is of prime importance in sampling and management programs. Hemlock woolly adelgid, Adelges tsugae (Annand) (Hemiptera: Adelgidae), is a non-native invasive pest of eastern and Carolina hemlock that is currently expanding its range westward through the central Appalachian region. We conducted intensive sampling of A.

Minimum Burning Pressures of Water-based Emulsion Explosives.

This manuscript describes a protocol to measure the minimum pressure required for sustained burning of water-based emulsion explosives. Pumping water-based emulsion explosives for blasting applications can be very hazardous, as demonstrated by a number of pump accidents around the globe in the last decades, including some that resulted in fatalities. In Canada, the recognition of this hazard has led to the development of pumping guidelines that were endorsed by both the explosives industry and the Explosive Regulatory Division of the Canadian government.

Spatial and Temporal Distribution of Imidacloprid Within the Crown of Eastern Hemlock.

Systemic imidacloprid is the most widely used insecticide to control the hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), an exotic pest of eastern hemlock, Tsuga canadensis (L.) Carriére in the United States. This study was conducted to 1) determine the effect of treatment timing (spring vs.

Thermal hazard assessment of nitrobenzene/dinitrobenzene mixtures.

During the production of nitrobenzene by an adiabatic nitration process, the main byproducts are mono and dinitrophenols as well as 2,4,6-trinitrophenol (picric acid) and 1,3-dinitrobenzene. The byproducts can become concentrated if a distillation step to remove high boiling point impurities is used. In the present work, representative samples of nitrobenzene containing 20-30% dinitrobenzene and less than 1% dinitrophenol, 1% picric acid, and 1% sodium hydroxide were tested by Differential Scanning Calorimetry (DSC) and Accelerating Rate Calorimetry (ARC) to investigate their thermal stability relative to the pure substances.