Your question: What are three stresses put on a freshwater lake in Ontario?

Where is the highest environmental stress in the Great Lakes?

DETROIT — Facing multiple threats — from zebra mussels to toxins to light pollution from brightly lit shoreline cities — Lakes Erie and Ontario are the most threatened of the five Great Lakes while the depths of Lake Superior remain the most pristine, according to an analysis of 34 stressors to the world’s largest …

Why is Lake Ontario threatened?

Today, the greatest threats to Lake Ontario come from urban development, electricity generation, and sewage and stormwater pollution. Lake Ontario Waterkeeper works to restore and protect the lake because it is vital to the survival of our communities. Nine-million people rely on the lake for drinking water.

What factors threaten the water quality of Lake Ontario and the Great Lakes?

The health of the Great Lakes is under threat from a number of factors – increased levels of harmful pollutants such as excess road salt and plastic pollution, urban growth, managing nutrients, increasing harmful and nuisance algae, hardened shorelines and invasive species.

What are some major stresses in the lakes?

Threats include invasive species (especially zebra mussels and lampreys), climate change (affecting lake temperature and water levels), phosphorous from erosion of agricultural soils, and contaminants from urban areas. Stressed areas almost always have multiple stressors, complicating restoration efforts.

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What watershed feeds Lake Ontario?

Rivers and Streams: 5,891 miles of freshwater rivers and streams. Major tributary watersheds to Lake Ontario (excluding the Niagara, Genesee, Oswego and Black Rivers, which are addressed as separate watersheds): Salmon River (639 river miles) Oak Orchard Creek (523 miles)

Who owns Lake Ontario?

Ontario claims ownership of its lakes and rivers. Its Ministry of Natural Resources website refers to the fact that the “Constitution Act” gives provinces ownership of their water resources “both surface and ground water…”

What are the effects of Great Lakes pollution?

The largest source of pollution in the Great Lakes is phosphorous runoff from farmland. The nutrient feeds cyanobacteria. That’s a harmful algal bloom which can harbor a toxin that can make humans and animals sick.

What causes pollution in Lake Ontario?

Lawrence River provides the lake’s outlet to the Atlantic Ocean. … Lake Ontario may be the most polluted out of the five Great Lakes. All of the other lakes flow into it, giving it their pollution. It also receives runoff from farms and businesses around it, according to the University of Wisconsin Sea Grant Institute.

What types of pollution are affecting the Great Lakes?

Sources of pollution include:

  • runoff of soils and farm chemicals from agricultural lands.
  • waste from cities.
  • discharges from industrial areas.
  • leachate from disposal sites.
  • direct atmospheric pollutants that fall as rain, snow, or dust on the lake surface, or exchange as gases with the lake water.