A view of the lower Little Colorado River, July 2013. Photo by Maria Dzul, USGS.
Maria C Dzul, PhD
Maria develops models to estimate abundance and assess environmental drivers of fish population dynamics in the Grand Canyon ecosystem.
Maria’s research interests include: 1) evaluating links between floods, temperature, and life history of fishes, 2) developing approaches for integrating detections from autonomous PIT antennas into mark-recapture models to improve estimation of survival, movement, and abundance, 3) using population models to guide decision making, and 4) alternative life history strategies and partial migration in fishes.
Science and Products
Study Uncovers Migration Patterns of Native Fish in the Colorado River
A study conducted by the USGS provides new insights into the migration patterns of three native fish species in the Colorado River: humpback chub, flannelmouth sucker, and bluehead sucker. This research highlights the importance of understanding native fish population dynamics within the Colorado River ecosystem in Grand Canyon, AZ.
Humpback Chub in the Colorado River, Grand Canyon
Threatened humpback chub are a native fish found only in the Colorado River Basin. Once found in warm-water canyons in the Basin, the largest population now persists in the Colorado River in Grand Canyon National Park, downstream of Glen Canyon Dam and Lake Powell, the reservoir upstream, created by the dam.
A view of the lower Little Colorado River (July 2013)
A view of the lower Little Colorado River, July 2013. Photo by Maria Dzul, USGS.
Science and Products
Study Uncovers Migration Patterns of Native Fish in the Colorado River
A study conducted by the USGS provides new insights into the migration patterns of three native fish species in the Colorado River: humpback chub, flannelmouth sucker, and bluehead sucker. This research highlights the importance of understanding native fish population dynamics within the Colorado River ecosystem in Grand Canyon, AZ.
Humpback Chub in the Colorado River, Grand Canyon
Threatened humpback chub are a native fish found only in the Colorado River Basin. Once found in warm-water canyons in the Basin, the largest population now persists in the Colorado River in Grand Canyon National Park, downstream of Glen Canyon Dam and Lake Powell, the reservoir upstream, created by the dam.
A view of the lower Little Colorado River (July 2013)
A view of the lower Little Colorado River, July 2013. Photo by Maria Dzul, USGS.
A view of the lower Little Colorado River, July 2013. Photo by Maria Dzul, USGS.