The North American Mosaic
Ozone is a gas present throughout the earth’s atmosphere. protects life on earth by absorbing harmful rays from the sun as they pass through the upper atmosphere (the stratosphere). Because the ozone present at the earth’s surface is detrimental, ozone is often described as being “good up high and bad nearby.”
The North American Mosaic
Acid deposition primarily results from the transformation of air pollutants such as sulfur dioxide and nitrogen oxides into secondary pollutants such as sulfuric acid, ammonium nitrate and nitric acid. Acidic particles and vapors can be deposited on the earth’s surface as acid precipitation (wet deposition) or via particles such as fly ash, sulfates, nitrates, and […]
The North American Mosaic
Industrial pollution and waste encompass the full range of unwanted substances and losses generated by industrial activities, including emissions to air or surface waters and the substances sent to sewage treatment plants, deposited in landfills, released or applied to the land, treated, injected underground, controlled through storage, recycled or burned for energy recovery.
The North American Mosaic
—the continuous saltwater bodies that cover more than 70 percent of the earth’s surface—shape its climate, provide a means of transport and are home to an important part of the planet’s biodiversity. —where land meets the sea—provide a wide range of valued goods and services, including fisheries, trade routes, recreation and tourism, oil and gas […]
The North American Mosaic
are directly related to a variety of human and ecological needs: agricultural, industrial, domestic and environmental. Human development and the environment depend on adequate supplies of clean water.
The North American Mosaic
(PBTs) are chemicals that do not degrade easily in the environment. PBTs typically accumulate in fatty tissues and are slowly metabolized, often increasing in concentration within the food chain. Certain PBTs have been linked to adverse health effects in both humans and animals.
The North American Mosaic
is a colorless, highly irritating gas created by photochemical reactions between nitrogen oxides and volatile organic compounds produced largely by fuel combustion, gasoline vapors and chemical solvents.
Trinational Risk Assessment Guidelines for Aquatic Alien Invasive Species
Test Cases for the Snakeheads () and Armored Catfishes () in North American Inland Waters
Monarch Butterfly Monitoring in North America
A key objective of the North American Monarch Conservation Plan (NAMCP) is to “monitor monarch baseline performance and habitat quality” (CEC 2008). To address this objective, during the development of the NAMCP, a trinational multi-stakeholder group of experts recommended the development and dissemination of a monarch monitoring program as a complementary tool.
Annotated Bibliography on the Environmental Effects of Biofuels
This annotated bibliography reviews literature from Canada, Mexico and the United States related to the environmental effects of liquid biofuels, defined in most cases as ethanol and biodiesel. It focuses on academic, government or government-sponsored documents and studies developed in Canada, Mexico and the United States. It is not meant to be a comprehensive review […]
The North American Mosaic
The North American Agreement on Environmental Cooperation obliges the Secretariat of the Commission for Environmental Cooperation to “periodically address the state of the environment in the territories of the Parties.” To meet this obligation, the Secretariat has developed this report——with the support of environmental reporting experts from the governments of Canada, Mexico and the United States.
North American Monarch Conservation Plan
This plan provides an updated account of the species and its current situation, identifies the main risk factors affecting it and its habitat throughout the flyway, and summarizes the current conservation actions taken in each country. Against this background, it offers a list of key trinational collaborative conservation actions, priorities and targets to be considered for adoption by the three countries.