EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/23/2019 | 9:30 AM - 9:45 AM | ASSESSING THE RELATIVE IMPACTS OF DIFFERENT HUMAN ACTIVITIES ON STREAM AND RIVER SALINITY | 151 ABC
ASSESSING THE RELATIVE IMPACTS OF DIFFERENT HUMAN ACTIVITIES ON STREAM AND RIVER SALINITY
Our understanding of the pervasiveness and degree of salinity alteration has been greatly improved by comparing model predicted natural background levels to current observations. Alteration can be caused by diverse array of human activities, from obvious impacts, like salting of roads or mining salt, to indirect impacts, like earthmoving or dams. But, without an understanding of which activities are causing the greatest alterations, we risk expending limited resources on managing the wrong causes. So, I examined the relative importance of the natural and human environmental predictors used to model salinity alteration, and determined that agriculture is responsible for more alteration than either urbanization or resource extraction at national scales. However, the effects of human activities on salinity are complicated by their strong interactions with natural environmental factors. For example, agriculture in dry areas leads to twice the amount of salinization as agriculture in wet areas. Given that we have already lost 27% of low salinity habitats and climate and land use change could lead to the loss of an additional 42%, policy development should focus on reducing the pervasive effects of agriculture to limit the ecological effects of increasing salinity.
- Landuse
- Aquatic-terrestrial Linkage
- Modeling
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Presenters/Authors
John Olson
(), Dept of Applied Environmental Science, California State University Monterey Bay, CA, USA, joolson@csumb.edu;
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