2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2018 | 2:00 PM - 2:15 PM | ECOLOGICAL RELEVANCE OF CLIMATE-INDUCED TRENDS IN STREAMFLOW ATTRIBUTES AT A CONTINENTAL SCALE | 410 A
ECOLOGICAL RELEVANCE OF CLIMATE-INDUCED TRENDS IN STREAMFLOW ATTRIBUTES AT A CONTINENTAL SCALE
We assessed trends (1955-2014) in ten streamflow attributes at 599 gaged watersheds across the conterminous United States. All sites had continuous daily flow records for 60 years and experienced minimal changes in land/water use over the period. In addition, we quantified how indicators of biological integrity are related to anthropogenic changes in the same set of streamflow attributes using a larger set of gaging sites where the effects of climate had been statistically removed, but effects of land/water use retained. Climate-induced trends were statistically likely at the majority of assessed sites for most streamflow attributes. Regional patterns in streamflow trends largely coincided with known patterns in precipitation and air temperature over the last six decades. Statistically significant and biologically interpretable associations between biological integrity and streamflow attributes were found in all regions. These associations suggest that climate-induced trends to streamflow over the last 60 years have been similar in magnitude to changes caused by land/water use. Further, in some regions climate-induced effects on streamflow are likely additive to those due to land/water use, whereas in other regions the climate-related effects are ameliorated by land/water use.
- Biodiversity
- Hydrology
- Bioassessment
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Presenters/Authors
Daren Carlisle
(), U.S. Geological Survey, dcarlisle@usgs.gov;
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David Wolock
(), U.S. Geological Survey, dwolock@usgs.gov;
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Greg McCabe
(), U.S. Geological Survey, gmccabe@usgs.gov;
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