scholarly journals Bend-scale geomorphic classification and assessment of the Lower Missouri River from Sioux City, Iowa, to the Mississippi River for application to pallid sturgeon management

2018 ◽  
Author(s):  
Robert B. Jacobson ◽  
Michael E. Colvin ◽  
Edward A. Bulliner ◽  
Darcy Pickard ◽  
Caroline M. Elliott
Keyword(s):  
Mississippi River ◽  
Missouri River ◽  
Pallid Sturgeon

Establishing ecologically relevant management boundaries: linking movement ecology with the conservation ofScaphirhynchussturgeon

2016 ◽  
Vol 73 (6) ◽  
pp. 877-884 ◽  
Author(s):  
Anthony P. Porreca ◽  
William D. Hintz ◽  
Gregory W. Whitledge ◽  
Neil P. Rude ◽  
Edward J. Heist ◽  
...  
Keyword(s):  
Life History ◽  
Environmental History ◽  
Mississippi River ◽  
Large Scale ◽  
Spatial Scales ◽  
Species Conservation ◽  
Missouri River ◽  
Shovelnose Sturgeon ◽  
Ecological Requirements ◽  
Pallid Sturgeon

We investigated the environmental life history of widely distributed threatened and endangered sturgeons in large rivers of the central United States that experience different regulatory regimes and management priorities. Using microchemistry techniques, our goal was to assess how to improve species conservation by dampening the incongruity that often occurs between management and species’ ecological requirements, particularly at large spatial scales. Pallid sturgeon (Scaphirhynchus albus), shovelnose sturgeon (Scaphirhynchus platorynchus), and their hybrids were analyzed for88Sr and44Ca and related to a geographically relevant range of Sr:Ca values for the Missouri and Mississippi rivers to quantify large-scale environmental history. We found natal origin of 81% of all wild sturgeon collected was the lower Missouri River. Pallid and hybrid sturgeon used the middle and upper Mississippi rivers more frequently as they aged, whereas shovelnose sturgeon occupied the lower Missouri River more often throughout life. Our results highlight a mismatch between conservation boundaries and sturgeon river use. Managers should consider expanding current protections for pallid sturgeon to include the unprotected sections of the Mississippi River and that research and conservation actions consider the importance of Mississippi River habitats to Scaphirhynchus sturgeon throughout their life history. Our findings have implications for conserving wide-ranging riverine species at large spatial scales using the framework described here.

scholarly journals Evidence of Limited Recruitment of Pallid Sturgeon in the Lower Missouri River

2019 ◽  
Vol 10 (2) ◽  
pp. 336-345 ◽  
Author(s):  
Kirk D. Steffensen ◽  
Kimberly A. Chojnacki ◽  
Jeffrey A. Kalie ◽  
Meredith L. Bartron ◽  
Edward J. Heist ◽  
...  
Keyword(s):  
Mississippi River ◽  
Life Stage ◽  
Length Distribution ◽  
Missouri River ◽  
Breeding Population ◽  
Tissue Samples ◽  
Tag Loss ◽  
Pallid Sturgeon ◽  
Natural Reproduction ◽  
Natural Recruitment

Abstract Pallid Sturgeon Scaphirhynchus albus are endemic to the Missouri and Mississippi river basins and are rare throughout their range. The species was listed as federally endangered with little to no evidence of natural recruitment. Since population augmentation was initiated as a recovery objective in the early 1990s, thousands of hatchery-origin Pallid Sturgeon have been stocked in the lower Missouri River (Gavins Point Dam [river kilometer 1,305.1] to the confluence of the Mississippi River [river kilometer 0.0]). Efforts to discriminate natural reproduction and recruitment of wild-origin Pallid Sturgeon from hatchery-origin fish has been hampered by tag loss in hatchery-origin sturgeon, inconsistent documentation of hatchery parental crosses, and the failure to collect tissue samples for genotyping all broodstock. However, the recent reconstruction of missing parental genotypes from known hatchery-origin progeny and from cryopreserved milt made it possible to examine Pallid Sturgeon recruitment. Therefore, our objectives were to 1) determine the likelihood that unmarked Pallid Sturgeon captured from the lower Missouri River were the result of natural recruitment and 2) examine the length distribution of wild- and hatchery-origin fish to determine if a difference exists by origin and examine the life-stage distribution. Genetic analysis showed that from 2003 to 2015, 358 “presumptive wild-origin” Pallid Sturgeon were captured in the lower Missouri River and the comparison between the length distributions of wild- and hatchery-origin fish did not provide any additional clarification into potential wild-origin fish. Low recruitment may be due to a small breeding population, high mortality of early life stages, hybridization with Shovelnose Sturgeon Scaphirhynchus platorynchus, or transport of drifting free embryos or larvae into inhospitable habitats. Determining what factors are limiting recruitment is the important next step for the recovery of Pallid Sturgeon in the lower Missouri River.

scholarly journals Ecological Requirements for Pallid Sturgeon Reproduction and Recruitment in the Lower Missouri River: A Research Synthesis 2005-08

2009 ◽  
Author(s):  
Aaron J. DeLonay ◽  
Robert B. Jacobson ◽  
Diana M. Papoulias ◽  
Darin G. Simpkins ◽  
Mark L. Wildhaber ◽  
...  
Keyword(s):  
Missouri River ◽  
Research Synthesis ◽  
Ecological Requirements ◽  
Pallid Sturgeon

Updated assessment of hatchery‐reared pallid sturgeon (Forbes & Richardson, 1905) survival in the lower Missouri River

2015 ◽  
Vol 32 (1) ◽  
pp. 3-10 ◽  
Author(s):  
K. D. Steffensen ◽  
L. A. Powell ◽  
S. M. Stukel ◽  
K. R. Winders ◽  
W. J. Doyle
Keyword(s):  
Missouri River ◽  
Pallid Sturgeon

scholarly journals Pallid sturgeon seasonal habitat selection in a large free‐flowing river, the lower Mississippi River

2020 ◽  
Vol 36 (2) ◽  
pp. 131-141
Author(s):  
Patrick T. Kroboth ◽  
Dylan A. Hann ◽  
Michael E. Colvin ◽  
Paul D. Hartfield ◽  
Harold L. Schramm
Keyword(s):  
Habitat Selection ◽  
Mississippi River ◽  
Pallid Sturgeon ◽  
Lower Mississippi River

Identifying river of origin for age-0 Scaphirhynchus sturgeons in the Missouri and Mississippi rivers using fin ray microchemistry

2012 ◽  
Vol 69 (5) ◽  
pp. 930-941 ◽  
Author(s):  
Quinton E. Phelps ◽  
Gregory W. Whitledge ◽  
Sara J. Tripp ◽  
Kurt T. Smith ◽  
James E. Garvey ◽  
...  
Keyword(s):  
Mississippi River ◽  
Missouri River ◽  
Relative Importance ◽  
Ambient Water ◽  
Short Term ◽  
Fin Ray ◽  
Middle Mississippi River ◽  
Nursery Habitats ◽  
Fin Ray Microchemistry ◽  
The Relationship

Understanding linkages between natal and nursery habitats is critical for conservation of riverine fishes. Scaphirhynchus sturgeons inhabiting the middle Mississippi River may originate from the Missouri or Mississippi rivers, although relative importance of these recruitment sources is unknown. We characterized the relationship between water and sturgeon fin ray Sr:Ca, verified shifts in water Sr:Ca are recorded in age-0 sturgeon fin rays, and determined whether age-0 sturgeons from the Mississippi and Missouri rivers exhibited distinct fin ray Sr:Ca signatures. Fin ray Sr:Ca of laboratory-reared fish reflected transfer from water with elevated Sr:Ca to ambient water 1 day posthatch, indicating that short-term residency in environments can be detected. Nine of 30 age-0 fish captured in the middle Mississippi River were Missouri River emigrants. Four of these emigrants originated in the upper portion of the lower Missouri River (≥589 km upstream from its mouth), where water Sr:Ca is higher compared with the lowermost section of the Missouri River and the Mississippi River. Twenty-five of 30 fish collected from the lowermost section of the Missouri River originated within this river segment; the remainder originated upriver. Fin ray Sr:Ca enables identification of natal river segment for age-0 sturgeons and contributions of river segments to sturgeon recruitment.

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