Human Impacts on Freshwater Resources

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Terms in this set (...)

Algal bloom
The rapid growth of a population of algae
Microcystin
Most frequently found cyanotoxin in the world
Toxin
a poison that can harm an organism
Fertilizer
a chemical that provides nutrients to help crops grow better.
Pesticide
A chemical intended to kill insects and other organisms that damage crops.
Point source pollution
a specific location from which pollution is released; an example of a point source location is a factory where wood is being burned.
Nonpoint source pollution
pollution that comes from many sources rather than from a single, specific site
Run-off
water that flows over the ground surface rather than soaking into the ground
Infiltration
Flow of water from the land surface into the subsurface.
Aquifer
A body of rock or sediment that stores groundwater and allows the flow of groundwater.
Pollutant
harmful material that can enter the biosphere through the land, air, or water
Contaminant
something that causes impurity; something that defiles or pollutes
Amoebas
a single-celled animal that catches food and moves about by extending fingerlike projections of protoplasm. Amoebas are either free-living in damp environments or parasitic.
Bacteria
a member of a large group of unicellular microorganisms that have cell walls but lack organelles and an organized nucleus, including some that can cause disease.
Reservoir
a large natural or artificial lake used as a source of water supply.
Salt water
water that contains dissolved salts and other minerals
Freshwater
Does not contain any saltwater and can be rivers, lakes, streams,ponds, and wetlands
Icecaps
Icecaps are large areas of ice that permanently cover land.
Glaciers
huge, slow-moving mass of snow and ice
Surface water
Water above the surface of the land, including lakes, rivers, streams, ponds, floodwater, and runoff.
Ground water
underground water that is held in the soil and in pervious rocks
Land Use
Various ways humans use the land such as agricultural, industrial, residential, or recreational
Distribution Systems
Distribution systems can be defined as the sequential flow of procedures, systems, and activities which are designed and linked to facilitate and monitor the movement of goods and services from the source to the consumer
Infrastructure
the basic physical and organizational structures and facilities (e.g., buildings, roads, and power supplies) needed for the operation of a society or enterprise
Turbidity
Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality
Land Use
Various ways humans use the land such as agricultural, industrial, residential, or recreational
Best Management Practices
Best Management Practices (BMP) is a term used in the United States and Canada to describe a type of water pollution control
Soil erosion
Image result for Soil erosion
Soil erosion is a naturally occurring process that affects all landforms. In agriculture, soil erosion refers to the wearing away of a field's topsoil by the natural physical forces of water and wind or through forces associated with farming activities such as tillage
Sediment Pollution
Sediment pollution is dirt, minerals, sand, and silt eroded from the land and washed into the water. It comes from areas where there is inadequate vegetation to slow runoff. Sediment causes several problems for aquatic organisms. First, particles of sediment are suspended in the water
Nutrient Pollution
Nutrient pollution is the process where too many nutrients, mainly nitrogen and phosphorus, are added to bodies of water and can act like fertilizer, causing excessive growth of algae. Nutrients can run off of land in urban areas where lawn fertilizers are used.

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