To prepare the site for the building of a new natural amphitheatre and central concourse, the Société du parc Jean-Drapeau conducted tree cultivation and maintenance work on the south sector of Île Sainte-Hélène.
Work done on trees in this sector
- Cutting down
|February 13 to March 31, 2017|
|Monday to Friday||7 a.m. to 5 p.m.|
Parc Jean-Drapeau's commitment
Minimize the impact on the ecosystem
- The SPJD is committed to offsetting the cut all of the trees that are removed in conjunction with this project. Thus, for any tree that is cut down, a tree will be planted elsewhere in the Parc over the next 5 years.
- We are giving a second life to trees that are removed by transforming them into wood chips which will be used as mulch to protect the Parc's wooded areas.
Characteristics of the trees being removed
- Based on an analysis conducted by forestry engineers, 71% of the removed trees have a low preservation value and 11% have no preservation value at all, which means these trees are diseased or dead.
- All of the trees in the sector being worked on were planted in the 1990s, so no tree being removed is older than 25 years of age.
PAMV: enrich the biodiversity
The SPJD will take the opportunity to increase its positive impact on the Parc's ecosystems. To do so, several hundreds of tree species will be planted in this new development, thus enhancing the biodiversity and the potential of quality wildlife habitats. The new landscaping will be composed of indigenous tree species, shrubs, native grasses and ecological seed plantings.
Biodiversity is the variety of life and the dynamics of its interactions. It is the diversity of plants, animals and micro-organisms, as well as the genetic diversity in species and the diversity of ecosystems. It is all forms of life, along with their interactions with each other and their particular life environment. Biodiversity protection at Parc Jean-Drapeau remains a priority and is part of a broader vision on sustainable development.
Frequently Asked Questions
The tree cultivation and maintenance work included pruning, transplanting, cutting down and grubbing of trees where the work was done to lay the groundwork for the arrival of the general contractor for the PAMV (Development and Enhancement Plan) construction site.
All trees removed from the site were planted in the 1990s, thus none of the trees that were cut down were older than 25 years of age. Moreover, based on the report of the forestry engineer assigned to this project, 71% of these trees had a low preservation value, and 11% had no preservation value at all, which means they were dead or diseased.
We needed to get the site ready for the carrying out of the Development and Enhancement Plan on Île Sainte-Hélène, which included a natural amphitheatre and completely renovated central concourse that could accommodate 65,000 visitors. In the new plan, the vegetation was spread out differently, but continues to be highly visible. We took the opportunity to remove dead or diseased trees in this sector.
The main tree species that were cut down included:
- Norway Maple / exotic and invasive species
- Colorado Spruce / exotic species, not very representative of the region
- Ash / vulnerable to the emerald ash borer
- Siberian Elm / exotic and undesirable species
- Other species
The preservation value is determined on three components based on the SIAQ (Société internationale de l'arboriculture du Québec) method; the components are the diameter of the tree, the species aspect and the health condition of the tree. It is worth noting the diameter of the tree stems is the variable which affects the preservation value the most.
The tree count was done for trees that are more than 10 centimetres in diameter. We estimate there are about 17,700 trees on the two islands.
As part of Phase 1 of the PAMV, about 550 new trees will be planted on the project site. We will then replant them at the Parc to offset the negative outcome of the trees that are being removed.
All of the cut branches will be transformed into wood chips which will then be used as mulch at various places in the Parc to protect the wooded areas.
- Snakes: Measures will be taken to avoid the migration of snakes inside the construction site area. If snake species are found during the construction work, they will be picked up and released into their natural environment.
- Birds: The tree cultivation and maintenance work will be done outside the dates of the nesting period.
We needed to do the tree cultivation and maintenance work before spring, so the work would be over before the birds' nesting period at the Parc.
The contract was awarded to the Asplundh Canada ULC company, the leader in vegetation management in the province of Québec.