Francine H Mejia
Science and Products
Longitudinal, lateral, vertical, and temporal thermal heterogeneity in a large impounded river: Implications for cold-water refuges
Dam operations can affect mixing of the water column, thereby influencing thermal heterogeneity spatially and temporally. This occurs by restricting or eliminating connectivity in longitudinal, lateral, vertical, and temporal dimensions. We examined thermal heterogeneity across space and time and identified potential cold-water refuges for...
Mejia, Francine H.; Torgersen, Christian E.; Berntsen, Eric K; Maroney, Joseph R; Connor, J M; Fullerton, Aimee H.; Ebersole, Joseph L.; Lorang, Mark L Stream metabolism increases with drainage area and peaks asynchronously across a stream network
Quantifying the spatial and temporal dynamics of stream metabolism across stream networks is key to understanding carbon cycling and stream food web ecology. To better understand intra-annual temporal patterns of gross primary production (GPP) and ecosystem respiration (ER) and their variability across space, we continuously measured dissolved...
Mejia, Francine H.; Fremier, Alexander K.; Benjamin, Joseph R.; Bellmore, J. Ryan; Grimm, Adrianne Z.; Watson, Grace A.; Newsom, Michael
Thermal Heterogeneity in a Large Impounded River: Implications for Cold-Water Refuges
Dam operations can influence spatial and temporal thermal heterogeneity in rivers, yet quantity and distribution of cold-water refuges for salmonids in large impounded rivers have not been well studied.