BACKGROUND Ash (Fraxinus spp.) is a dominant tree species throughout urban and forested landscapes of North America (NA). The rapid invasion of NA by emerald ash borer (Agrilus planipennis), a wood-boring beetle endemic to Eastern Asia, has resulted in the death of millions of ash trees and threatens billions more. Larvae feed primarily on phloem tissue, which girdles and kills the tree. While ...

Abstract Silvopastoral systems with grazing pigs are mainly concentrated in Mediterranean regions, for instance Iberian dehesas and montados . Conversely, European deciduous forests, outdoor pig farming has almost disappeared, despite it could provide several environmental socioeconomic benefits. For instance, be used habitat restoration conservation, while providing high quality meat products ...

We studied the host selection behavior and feeding preference of the emerald ash borer, Agrilus planipennis Fairmaire (Coleoptera: Buprestidae). A. planipennis is an exotic forest insect pest native to Asia that was discovered in North America in 2002 and is causing widespread mortality of ash trees (Fraxinus spp.) in southeast Michigan and surrounding states. We compared host selection and fee...

The transmission spectra of bud scales of 14 woody species and the 77 K fluorescence emission spectra of the innermost leaf primordia of closed and opened buds of 37 woody species were studied. Pigment concentrations were determined in some species. Bud scales had low transmittance between 400 and 680 nm with a local minimum around 680 nm. Transmittance increased steeply above 680 nm and was > ...

Ash species (Fraxinus spp.) in Europe are threatened by the Emerald Ash Borer (Agrilus planipennis, EAB), an invasive wood boring beetle native to East Asia and currently spreading from European Russia westwards. Based on a high-resolution habitat distribution map (grid cell size: 25 × 25 m) and data on distribution and abundance of Common Ash (Fraxinus excelsior), the most widespread and highl...

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MINGYAO LIU,1,2 LORRAINE TREMBLAY,1,2 STEPHEN D. CASSIVI,1,2 XIAO-HUI BAI,1,2 ERIC MOURGEON,1,2 ANDREW F. PIERRE,1,2 ARTHUR S. SLUTSKY,3,4 MARTIN POST,5–7 AND SHAF KESHAVJEE1,2 1Thoracic Surgery Research Laboratory, Toronto General Hospital, Toronto M5G 2C4; 3Division of Respiratory Medicine, Mount Sinai Hospital, Toronto M5G 1X5; 5Medical Research Council Group in Lung Development and Lung Bio...

and Applied Analysis 3 It is an interesting problem to extend the above results to a strongly continuous semigroup of nonexpansive mappings and a strongly continuous semigroup of asymptotically nonexpansive mappings. Let S be a strongly continuous semigroup of nonexpansive self-mappings. In 1998 Shioji and Takahashi 11 introduced, in Hilbert space, the implicit iteration