Tag Archive | invasive species

Beech Bark Disease Severity vs. Tree diversity

Beech Bark Disease Severity vs. Tree diversity

The American beech tree (Fagus grandifolia) is a species of canopy tree found in the northeastern U.S and Canada, growing in mixed deciduous, hardwood, and temperate forests (Zhang et al., 2015). In the Morgan Arboretum, which is dominated primary by sugar maple and beech, these beech tree plays a significant role in the ecosystem by […]

Earthworm Abundance in Relation to Buckthorn

Earthworm Abundance in Relation to Buckthorn

St. Lawrence lowland forests are home to an immense amount of diversity. However, this diversity can sometimes be put in danger with the introduction of invasive species. Invasive species are attributed to being the second leading cause of local extinction (Roth et al., 2015). One major invasive species in North American forests is the common […]

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 […]

Meet the Norway Maple (Acer platanoides)

Meet the Norway Maple (Acer platanoides)

Kingdom : Plantae Order: Sapindales Family: Sapindaceae Genus: Acer Species: A. plantanoides A species native to Europe, the Norway Maple (Acer platanoides) is a deciduous tree now commonly found throughout the St. Lawrence Lowlands, including McGill University’s Morgan Arboretum. In appearance, the Norway Maple is quite similar to other trees of the genus Acer, including […]

Distributions of earthworms in the Morgan Arboretum

Distributions of earthworms in the Morgan Arboretum

With earthworms getting more attention as they make their way into once earthworm-free forests, it was surprising to find that there had been no past research done on the distribution of earthworms in the Morgan Arboretum. Due to the limited amount of time, we took this opportunity to target the St.Bernard soil series (one of […]