Category Archives: Upper Missouri and Yellowstone Rivers

Transitioning from One Life Stage to the Next

2016 Pallid Sturgeon Free Embryo Drift Study Continues and is Far from Completion By Pat Braaten July 20, 2016 The release of nearly 700,000 pallid sturgeon free embryos on June 27 (see previous blog entry – 700,000 Baby Fish) marked … Continue reading

Posted in Early life history, Pallid sturgeon, Sturgeon culture and propagation, Upper Missouri and Yellowstone Rivers | Tagged , , , , |

Lake Sakakawea Delta and Headwaters

By Robert Jacobson On July 5, the USGS acoustic Doppler current profiler crews worked from just south of Williston, North Dakota, downstream to the headwaters of Lake Sakakawea. The objective of this part of the study was to characterize velocities … Continue reading

Posted in Habitat mapping, Pallid sturgeon, Upper Missouri and Yellowstone Rivers | Tagged , , |

Steady Flows and Collaborative Science

By Robb Jacobson 7/6/2016 One of the key components to the Upper Missouri River Pallid Sturgeon Drift Experiment (see previous blog entry Pallid Sturgeon Free Embryo Drift Experiment Starts) was steady release of flow from Fort Peck Dam. Usually this … Continue reading

Posted in Early life history, Upper Missouri and Yellowstone Rivers |

Velocity Measurements in Support of the Drift Study

By Robb Jacobson and Susannah Erwin One of the key components of the Upper Missouri River Pallid Sturgeon Drift Study is the collection of detailed water-velocity information. Water velocities are used to calibrate the advection-dispersion model (see previous blog entry … Continue reading

Posted in Early life history, Methods, Upper Missouri and Yellowstone Rivers |

Night sampling for pallid sturgeon free embryos (The Fish Don’t Sleep and Neither Do We)

By Robb Jacobson and Aaron DeLonay The sample design for the Upper Missouri River Pallid Sturgeon Drift Experiment depends on nearly around-the-clock sampling for free-embryos, the life stage from hatch to the initiation of feeding.  It can be a grueling process … Continue reading

Posted in Early life history, Methods, Upper Missouri and Yellowstone Rivers |

Models and baby fish – digits, dye, particles, and biological reality

By Robb Jacobson and Ed Bulliner The Upper Missouri River Pallid Sturgeon Drift Study is ultimately about providing sound scientific information for smart decisions. The decisions relate to how to manage this large river to help recover the endangered pallid … Continue reading

Posted in Early life history, Technology, Upper Missouri and Yellowstone Rivers |

Boating the Upper Missouri River is not for the faint of heart

By Robb Jacobson The Upper Missouri River is mostly left to its own devices, allowed to migrate as it pleases. As a result, the river provides complex habitat that may lead to retention and growth of larval pallid sturgeon. The … Continue reading

Posted in Early life history, Upper Missouri and Yellowstone Rivers |

700,000 Baby Fish

On Monday afternoon, June 27, the collaborating scientists of the Missouri River Pallid Sturgeon Free Embryo Drift Study delivered over 700,000 one-day post hatch (dph) pallid sturgeon to the Upper Missouri River. The drift experiment has been over a year … Continue reading

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Missouri River Dye Trace Experiment to Support Understanding of Free Embryo Drift

By Robb Jacobson, June 27, 2016 Missouri River scientists started the first phase of the pallid sturgeon free embryo drift study by employing a standard method to understand how hydraulic processes vary the rate of downstream transport of dissolved constituents … Continue reading

Posted in Methods, Upper Missouri and Yellowstone Rivers |

Pallid Sturgeon Free Embryo Drift Experiment Starts

By Robb Jacobson, and Casey Hickcox, June 26, 2016 Missouri River scientists started a large-scale collaborative study on June 24 to improve understanding of the fate of pallid sturgeon free embryos (from hatch through first feeding) in the Upper Missouri River (figure 1).  The study … Continue reading

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