K. Steffensen

Publications51
h-index11
Citations345
Highly Influential Citations17
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Assessment of Hatchery-Reared Pallid Sturgeon Survival in the Lower Missouri River
Abstract The population of pallid sturgeon Scaphirhynchus albus in the lower Missouri River between Gavins Point Dam (river kilometer [rkm] 1,305.2) and the confluence with the Mississippi River (rkm… Expand
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Population Size of Hatchery-Reared and Wild Pallid Sturgeon in the Lower Missouri River
Abstract The population size of pallid sturgeon Scaphirhynchus albus is currently unknown throughout much of the Missouri River. Listed as federally endangered in 1990, the pallid sturgeon remains… Expand
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A comparison of gastrically and surgically implanted telemetry transmitters in shovelnose sturgeon.
Transmitter retention and the effects gastrically and surgically implanted telemetry transmitters had on condition and mortality of shovelnose sturgeon, Scaphirhynchus platorhynchus (Rafinesque),… Expand
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Heterogeneous detection probabilities for imperiled Missouri River fishes: implications for large-river monitoring programs
Occupancy modeling was used to determine (1) if detection probabilities (p) for 7 regionally imperiled Missouri River fishes (Scaphirhynchus albus, Scaphirhynchus platorynchus, Cycleptus elongatus,… Expand
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Validation of age estimates obtained from juvenile pallid sturgeon Scaphirhynchus albus pectoral fin spines
Summary Pallid sturgeon Scaphirhynchus albus are a federally-listed endangered species, yet little is known about their population dynamics, including age and growth. Age validation is needed… Expand
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Population prediction and viability model for pallid sturgeon (Scaphirhynchus albus, Forbes and Richardson, ) in the lower Missouri River
Summary Long-term population trends of pallid sturgeon Scaphirhynchus albus in the lower Missouri River were evaluated via a discrete and stochastic age-structure population viability model. The… Expand
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Population characteristics of pallid sturgeon (Scaphirhynchus albus (Forbes & Richardson, )) in the Lower Missouri River
Summary Population characteristics of pallid sturgeon Scaphirhynchus albus in the lower Missouri River are relatively unknown. Therefore, data collected from the Nebraska Game and Parks Commission… Expand
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Pallid sturgeon size structure, condition, and growth in the Missouri River Basin
Summary We synthesized wild and stocked pallid sturgeon Scaphirhynchus albus capture data collected in four recovery areas of the Missouri River during 1998–2007, providing the first basin-wide… Expand
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FISH ASSEMBLAGES AT ENGINEERED AND NATURAL CHANNEL STRUCTURES IN THE LOWER MISSOURI RIVER: IMPLICATIONS FOR MODIFIED DIKE STRUCTURES
Large rivers throughout the world have been modified by using dike structures to divert water flows to deepwater habitats to maintain navigation channels. These modifications have been implicated in… Expand
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Fish community response to floodplain inundation in a regulated river
Floodplain connectivity has been identified as an important element of river ecosystem function for enhancing biological productivity, yet most of the world's large rivers have been managed to reduce… Expand
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