Geologists working for the Environmental Protection Agency monitor surface waters at sites across the country to determine the effects of acid rain on aquatic ecosystems. What type of information would the geologists most likely track?
Geologists working for the Environmental Protection Agency (EPA) would track various types of information to determine the effects of acid rain on aquatic ecosystems. Some of the key information that geologists would most likely track include:
1. pH Levels: Geologists would measure the acidity of the surface waters to determine the level of acidification caused by acid rain. pH levels below 7 indicate increasing acidity.
2. Water Quality Parameters: Geologists would monitor parameters such as dissolved oxygen, turbidity, conductivity, and temperature, as changes in these parameters can indicate the impacts of acid rain on aquatic life.
3. Species Diversity and Abundance: Geologists would assess the composition and abundance of aquatic species to determine if acid rain is affecting their populations. Changes in species diversity and abundance can indicate the health of the ecosystem.
4. Biological Indicators: Geologists would study specific organisms, such as sensitive macroinvertebrates, fish, and amphibians, that are known to be sensitive to changes in water quality caused by acid rain. Monitoring these species can provide valuable insights into the impacts of acid rain on aquatic ecosystems.
5. Chemical Composition: Geologists would analyze the chemical composition of surface waters, looking for elevated levels of sulfuric acid, nitric acid, and other pollutants that are characteristic of acid rain. These measurements help identify the sources and extent of acid rain pollution.
6. Watershed Analysis: Geologists would study the entire watershed, including land use patterns, soil type, and surrounding vegetation, to assess the overall impact of acid rain on the aquatic ecosystem. This broader analysis helps link the sources of acid rain to specific impacts.
By tracking these types of information, geologists can assess the extent and severity of acid rain impacts on aquatic ecosystems and make informed recommendations for mitigation and conservation efforts.