A biome is a broad biological term used to describe geographical locations which have similar types of wildlife. Among the different types of biomes, there are two distinct aquatic biomes -- freshwater and marine. Freshwater biomes are imperative to everyday life because they serve as the main global source of drinking and farming water. About 20 percent of Earth's total area is comprised of freshwater biomes, and they are found on every continent.
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To be considered a freshwater biome, the salt content must be below 1 percent. There are several types of freshwater biomes, which include rivers, lakes, and ponds. All freshwater types are similar in the fact that they all require rainfall to replenish the water supply and they all have a unique niche in the biosphere.
Freshwater biomes can exist in both hot and cold regions. Summer temperatures average 22 degrees Celsius (71.6 degrees Fahrenheit) and winter temperatures average around 0.3 degrees Celsius (32.6 Fahrenheit). The climate's rainfall averages between 25.4 to 203.2 cm (10 to 80 inches) per year.
The Earth's average temperature has risen about 0.56 degrees Celsius (one degree Fahrenheit) since 1900. In fact, there have been 10 record-breaking years since 1990. The slight climate change has not significantly affected the wildlife in freshwater biomes; however, if the climate of freshwater biomes continues to change, then it could have a negative effect on the wildlife population.
The climate in a freshwater biome provides an environment that promotes wildlife diversity. According to Alan Gooden of Henrietta University, freshwater biomes provide habitats for 700 fish species and 1,200 types of amphibians. Not only does it provide a drinking source for land animals, but freshwater habitats are home to plant life and encourage fungal growth.
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