invasive species

Woodpecker Damage on Ash Trees at the Morgan Arboretum

Woodpecker Damage on Ash Trees at the Morgan Arboretum

Introduction The emerald ash borer (EAB) has killed 75 million ash trees in North America since 2002 (“Ville de Montreal”, 2015), causing Montreal to invest 15 million dollars over the next three years to deal with the infestation, and plant new trees (Laframboise, 2016). Predators of the EAB larvae include woodpeckers (Jennings et al., 2013). […]

Buckthorn Abundance Along Edge Habitats: Morgan Arboretum

Buckthorn Abundance Along Edge Habitats: Morgan Arboretum

  Figure 1: One of the tree lines we studied, on a beautiful day. Introduction: The invasive European shrub known as Buckthorn, has been recently identified as detrimental to North American ecosystems (Mascoro, 2007). There are two types, Common buckthorn (Rhamnus cathartica) and Glossy buckthorn (Fragula alnus) (See figure 2). In the context of our […]