Category Archives: environment

Trumpeter Swans at LaSalle Park

by Sandy Gillians -
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Members of the Halton/North Peel Naturalist Club
We had a great turnout for the birding/Trumpeter Swan outing on Saturday November 29th. A total of 14 hardy members and guests of the Halton/North Peel Naturalist Club managed to find each other at LaSalle Park in Burlington in spite of confusion over "which" parking lot we had agreed to meet at. Oops! Fortuitously, the carpoolers noticed a group … Continue Reading ››

Going Viral – The Real Way

by W.D. McIlveen - All readers must surely have heard of the ongoing outbreak of the Ebola hemorrhagic fever that is occurring in several countries in West Africa. The disease is indeed a nasty one that starts with a fever, muscle pain, and headache followed by vomiting, diarrhea, and impaired kidney and liver function. Internal and external bleeding may also occur. The mortality rate of the current outbreak stands at about 70%. As of 14 October 2014, 9,216 suspected cases and … Continue Reading ››

Credit Valley Conservation Volunteers Honoured at Ontario Awards

Credit Valley Conservation award winners celebrate with a smile. (From left) CVC CAO Deborah Martin-Downs, Mississauga Volunteer Pat Kelly, MPP Dipika Damerla, Acton volunteer Bill McIlveen and CVC Volunteer Program Coordinator Annabel Krupp.
More than six million Ontarians contribute to their communities through volunteerism each year. In recognition of this, the Ontario Ministry of Citizenship and Immigration held a Volunteer Service Awards ceremony on April 29. The event celebrated … Continue Reading ››

Return of the Phosphorus : Algae Issue

by W.D. McIlveen On February 27, 2014, the International Joint Commission [I.J.C., 2014] released a report on the most recent algae bloom problem in Lake Erie. That report had much in common with a similar problem that existed in the Great Lakes about 50 years before. That problem was the association between phosphorus loading in the water column and the subsequent growth of algae, most conspicuously Cladophora glomerata, though blue green bacteria and other species constitute additional problems. Continue Reading ››

One Step Forward, One Step Back – Recent Changes in Invasive Species

by W.D. McIlveen
Figure 1. Adult Hypena opulenta
Figure 1. Adult Hypena opulenta
The situation regarding invasive species is never static. Periodically we get good news mixed in with the gloomy reports of some new species that has appeared at our door. And so it is that we have some recent changes in local matters pertaining to invasive alien species. Starting with the bad news first, the … Continue Reading ››

Death of a tree

Two weeks ago one of my favourite trees was felled by a bulldozer. This tree, on Creditview Rd. in Brampton, was graced with the lovely arching form that only mature elms exhibit. Before Dutch elm disease ravaged the land this beauty was common. The few remaining mature elms are rare treasures. The lure of this elm was so powerful that I would include Creditview Road on my route to work simply to … Continue Reading ››

Tufa deposits discovered in Credit River watershed

Belfountain CA Tufa Deposit (Photo by Lynda Ruegg)
Belfountain CA Tufa Deposit (Photo by Lynda Ruegg)
In 2012, Credit Valley Conservation inventory staff discovered a provincially and nationally rare phenomenon along the Niagara Escarpment at Silver Creek and Belfountain. This discovery was of tufa, a soft rock, being actively formed at the emergence of select springs. Tufa is a variety of limestone. It differs from typical Escarpment rock formed … Continue Reading ››