Gross primary production estimates and associated light, sediment, and water quality data from the Colorado River below Glen Canyon Dam
These data were compiled to model the effects of flow regime and bed grain size distributions on rates of gross primary production (GPP) in the Colorado River below Glen Canyon Dam, AZ, USA. The objectives of our study were to quantify daily and weekly scale effects of an experimental flow regime on GPP in the Colorado River. The experimental flow was conducted at Glen Canyon Dam from May-August in 2018, 2019, and 2020 and contrasted steady-low flows on weekend days with business-as-usual hydropeaking flows during weekdays. This data release only contains data through 2019. These data represent daily-scale estimates of GPP, discharge, turbidity, water depth, and canyon shading for eleven reaches on the Colorado River below Glen Canyon [...]
Citation Information
| Publication Year | 2022 |
|---|---|
| Title | Gross primary production estimates and associated light, sediment, and water quality data from the Colorado River below Glen Canyon Dam |
| DOI | 10.5066/P9ZS6YLV |
| Authors | Bridget R Deemer, Michael D Yard, Nicholas Voichick, David C Goodenough, Glenn E Bennett, Robert O. Hall Jr., Michael J Dodrill, David Topping, Thomas Gushue, Jeffrey D Muehlbauer, Theodore Kennedy, Charles B Yackulic |
| Product Type | Data Release |
| Record Source | USGS Digital Object Identifier Catalog |
| USGS Organization | Southwest Biological Science Center - Flagstaff, AZ, Headquarters |
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Experimental reductions in sub-daily flow fluctuations increased gross primary productivity for 425 river kilometers downstream
Aquatic primary production is the foundation of many river food webs. Dams change the physical template of rivers, often driving food webs toward greater reliance on aquatic primary production. Nonetheless, the effects of regulated flow regimes on primary production are poorly understood. Load following is a common dam flow management strategy that involves sub-daily changes in water releases propAuthorsBridget Deemer, Charles Yackulic, Robert O Hall Jr., Michael Dodrill, Theodore Kennedy, Jeffrey Muehlbauer, David Topping, Nicholas Voichick, Mike Yard - Connect
Thomas M Gushue
GIS Coordinator (IT Specialist)EmailPhoneCharles B Yackulic, Ph.D.
Research StatisticianEmailPhone