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glossary of the great lakespage
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Macrophytes
Management Measures MM
Mass Balance
Mercury Hg
Mesotrophic
Mid-Continent Ecology Division MED
Minnesota Acid Deposition Control Act
Minnesota Air Toxics Strategy
Minnesota Department of Health MDH
Minnesota Department of Natural Resources MN DNR, DNR
Minnesota Environmental Response and Liability Act MERLA
Minnesota Interagency Exotic Species Task Force Committee
Minnesota Pollution Control Agency MPCA, PCA
Minnesota Rule Chapter 6280
Minnesota Rule Chapter 7001
Minnesota Rule Chapter 7007
Minnesota Rule Chapter 7009
Minnesota Rule Chapter 7021
Minnesota Rule Chapter 7050
Minnesota Rule Chapter 7060
Minnesota Rule Chapter 8420
Minnesota Sea Grant Sea Grant
Minnesota Toxic Pollution Prevention Act TPPA
Mitigation
Mixing Zone
Multi-media Inspections
Multimedia Risk
Municipal Industrial Strategy for Abatement MISA
Mutagen
Mutation

Macrophytes
This term literally means large plant. Usually refers to rooted, seed-producing aquatic plants.

Management Measures MM
A management measure is an economically achievable way to control the addition of pollutants from existing and new nonpoint sources. These measures call for the best available nonpoint pollution control practices, technologies, processes, site specific criteria, operation methods, or other alternatives. Related Programs - Coastal Zone Management Act, Clean Water Act

Mass Balance
A scientific approach that studies the sources, movement, and destination of any substance, for example a contaminant, that enters a lake system. A mass balance budget for a particular pollutant is the amount that enters a lake minus the amount that is tied-up in the sediment, broken down by chemical or biological processes, or removed by some other means. This should equal the amount that flows out of the lake system. This exercise enables scientists to assess the possible long-term effects of a pollutant and possible remediation actions. Also see Lake Michigan Mass Balance Study. Related Programs - Great Lakes Toxic Reduction Effort, Lakewide Management Programs

Mercury Hg
A heavy metal, mercury is a neurotoxin that is toxic if breathed or ingested at sufficiently high concentrations. Mercury is present naturally in the environment. It has commonly been used in a wide variety of applications including thermometers, fluorescent bulbs, mirrors, hide preservation, paints, for plastic coloring, in inks and stains, and in golf course pesticides. Because of its common use, mercury is released during garbage incineration. It is also released through the combustion of fuels such as coal and wood for energy production. Mercury readily bioaccumulates in all aquatic organisms, especially fish and shell fish and in humans and wildlife that consume fish. Many lakes in the Great Lakes region have fish consumption advisories due to high levels of mercury primarily caused by atmospheric deposition. Mercury is one of the nine critical pollutants. Related Programs - Binational Program

Mesotrophic
A term used to describe a lake of moderate primary productivity. See also eutrophic and oligotrophic.

Mid-Continent Ecology Division MED
The EPA's freshwater ecology and water pollution research laboratory in Duluth, Minnesota. Established in 1967, the lab develops methods for predicting and assessing the effects of pollutants on freshwater resources. It is also involved in Great Lakes research, such as work in food chain contaminants, modeling, coastal wetlands, and the Environmental Monitoring and Assessment Program. MED was formerly called the Environmental Research Lab-Duluth. Related Programs - Environmental Protection Agency

Minnesota Acid Deposition Control Act
A Minnesota law passed in 1982 that required the MPCA to (1) identify the areas of the state containing resources sensitive to acid deposition, (2) develop a standard to protect these resources, (3) adopt a control plan to reduce sulfur dioxide emissions, and (4) ensure that all Minnesota emission sources subject to the control plan were in compliance by January 1, 1990.

Minnesota Air Toxics Strategy
A program developed by the Minnesota Pollution Control Agency to help achieve smooth, fair implementation of air toxics provisions of the 1990 Clean Air Act Amendments, protection of public health and the environment, and the collection of air toxics information. The strategy mirrors the federal program somewhat but has not gone though rule-making, and is a shift in focus for the state away from air toxics rules.

Minnesota Department of Health MDH
The state agency responsible for human health protection in Minnesota. Among other duties, the MDH prepares the fish consumption advisory each year and establishes drinking water standards.

Minnesota Department of Natural Resources MN DNR, DNR
A Minnesota state agency responsible for the management of the state's timber, waters, minerals and wildlife. The department is organized by division according to the resources it manages: forestry, fish and wildlife, parks and recreation, minerals, trails and waterways, enforcement, and waters.

Minnesota Environmental Response and Liability Act MERLA
This Minnesota state legislation was patterned after the Comprehensive Environmental Response, Compensation, and Liability Act, and provided the state with the authority to deal with uncontrolled releases of hazardous substances to the environment (MN Statute 115B).

Minnesota Interagency Exotic Species Task Force Committee
Established by Minnesota state legislation in 1989, this task force established a state-wide communications network between agencies that are involved with regulations, management, research, technical assistance, public awareness and educational programming regarding potential and existing exotic species.

Minnesota Pollution Control Agency MPCA, PCA
A Minnesota state agency responsible for setting standards and authorizing permits for air quality, solid waste, hazardous waste disposal, water quality, and noise pollution. The focus of the MPCA is on compliance to these standards through technical assistance, education and information. The agency is organized into four major divisions: air quality, water quality, groundwater and solid waste, and hazardous waste.

Minnesota Rule Chapter 6280
A Minnesota rule that requires permits for activities which are meant to control aquatic plants and submerged vegetation. These rules are administered by the MN DNR.

Minnesota Rule Chapter 7001
A Minnesota state regulation that contains the permit process and permit requirements for hazardous waste facilities, National Pollutant Discharge Elimination System, and water quality certification (Section 401 Certification). Administered by the MPCA. Related Programs - Clean Water Act

Minnesota Rule Chapter 7007
A Minnesota state regulation that contains requirements for a facility to obtain an air emission facility permit. Administered by the MPCA. Related Programs - Clean Air Act

Minnesota Rule Chapter 7009
A Minnesota state regulation that contains the state ambient air quality standards and methods of measurement to meet those standards. Administered by the MPCA. Related Programs - Clean Air Act

Minnesota Rule Chapter 7021
The Minnesota rule that includes the acid deposition standard and control requirements which apply to the electric power generating utilities. Also known as the Minnesota Acid Deposition Control Rule. Administered by the MPCA. Related Programs - Clean Air Act

Minnesota Rule Chapter 7050
A Minnesota rule that sets standards for protecting the quality and purity of the Waters of the State. Administered by the MPCA. Related Programs - Clean Water Act

Minnesota Rule Chapter 7060
A Minnesota rule that protects and preserves the underground Waters of the State. Administered by the MPCA.

Minnesota Rule Chapter 8420
A Minnesota rule that identifies replacement plan criteria for wetland drain and fill activities which require mitigation under the Wetland Conservation Act. These rules are administered by the Board of Water and Soil Resources. Related Programs - Wetland Conservation Act Rules

Minnesota Sea Grant  Sea Grant
This University of Minnesota-based program supports research, extension, and education about Lake Superior, the other Great Lakes, and inland waters of Minnesota, making research accessible to citizens, resource managers, and policy makers. Related Programs - National Oceanic and Atmospheric Administration, National Sea Grant College Program

Minnesota Toxic Pollution Prevention Act TPPA
State legislation passed into law in 1990, this act creates policies and sets up ways to prevent the release of toxic pollutants into the environment by reducing or eliminating toxic pollutants at their source through pollution prevention.

Mitigation
See wetland mitigation.

Mixing Zone
A limited area or volume of water where initial dilution of a point source pollutant discharge takes place. The zone is extended to cover the secondary mixing in the surrounding waterbody. Numeric water quality criteria can be exceeded, but acutely toxic conditions are prevented from occurring in this zone. Related Programs - Clean Water Act, National Pollutant Discharge Elimination System

Multi-media Inspections
These are inspections of a discharger's effect on water and air quality and generation of solid and hazardous waste. See Lake Superior Partnership. Related Programs - Western Lake Superior Sanitary District

Multi-media Risk
The human health risk due to exposure to a pollutant through all pathways such as inhalation, ingestion, or skin contact.

Municipal Industrial Strategy for Abatement MISA
A program initiative of the province of Ontario intended to reduce water pollution.

Mutagen
A substance that is known or suspected to cause mutations.

Mutation
A permanent change in the hereditary material involving a physical change in chromosomes or genes.

 

 

 

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