Tag Archive | Habitats

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 […]

Feeding Habits of The Eastern Grey Squirrel in Urban and Forest Habitats

Feeding Habits of The Eastern Grey Squirrel in Urban and Forest Habitats

Squirrels are one of the most recognizable animals in Canada. According to The Natural History of Squirrels (Gurnell 1987), three different types of squirrels exist: flying, ground-dwelling and tree squirrels. They all evolved from a common ancestor living in North America during the Eocene epoch (54 to 57 Million years ago), and then spread out, […]

Saproxylic Invertebrate Diversity in Decaying Ash Trees Vs. The Stage of Decay

Saproxylic Invertebrate Diversity in Decaying Ash Trees Vs. The Stage of Decay

Trees decay at very slow rates over the space of decades and constitute as much as 10-25% of the above ground biomass in forests (Ulyshen, 2014). Dead wood is a significant factor in nutrient cycling and is a host to many organisms, from unicellular microorganisms to complex invertebrates (Franklin et al., 1997). Organisms that depend […]

Black-capped chickadee foraging behavior

Black-capped chickadee foraging behavior

  Figure 1. Our study species, the chickadee. The black-capped chickadee, Poecile atricapillus, is one of the most common birds in Canada. It is classified in the family Paridae of the order Passeriformes, and has a range extending across southern Canada and the northern United States.3 Most people are familiar with these birds or have at […]

Amphibian Diversity, Abundance and Temporary Breeding Habitats in the Morgan Arboretum

Amphibian Diversity, Abundance and Temporary Breeding Habitats in the Morgan Arboretum

We are the @ColdBloodedHopsters, a group of McGill students in the class St Lawrence Ecosystems (ENVB222) studying amphibians at the Morgan Arboretum. Make sure to follow us on Twitter for more updates on our research! Introduction: Although they only occupy 0.5% of all animal species, amphibians are a large and diverse group with over 6000 […]