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Person

Janice Albers

Volunteer

Columbia Environmental Research Center

Email: jalbers@usgs.gov
Office Phone: 573-875-5399
Fax: 573-876-1896
ORCID: 0000-0002-6312-8269

Location
CERC - Tech Center
4200 New Haven Road
Columbia , MO 65201
US

Supervisor: Jon J Amberg
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We developed an age-structured population matrix model to perform population viability analysis for Lower Missouri River (LMR) shovelnose sturgeon (Scaphirhynchus platorynchus). We investigated potential effects of the commercial fishing moratorium put in place to help protect the similar-appearing pallid sturgeon (S. albus). The model applies different components of total variance in life history parameters at different levels: sampling variance (parameter uncertainty) between model iterations; temporal variance (temporal environmental fluctuations) between time steps within iterations; and individual variance (individual differences) within each time-step. The model predicted annual rates of population increase...
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Macrhybopsis reproduction and propagule traits were studied in the laboratory using two temperature regimes and three hormone treatments and which methods produced the most spawns. Only sicklefin chub (M. meeki) spawned successfully although sturgeon chub (M. gelida) released unfertilized eggs. All temperature and hormone treatments produced M. meeki spawns, but two treatments had similar success rates at 44 and 43%, consisting of a constant daily temperature with no hormone added, or daily temperature fluctuations with hormone added to the water. Spawns consisted of multiple successful demersal circular swimming spawning embraces interspersed with circular swims without embraces. The most spawns observed for one...
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Attributes measured to estimate total fecundity for two Macrhybopsis species typically found in the lower Missouri river
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This data set includes tables providing location, environmental, vegetation, soils, and carbon sampling data collected in 2015 and 2016 at vegetation sampling units on restored areas and other habitats at sites in northeast Indiana, USA. "Sample_units.txt" provides location, environmental, soil physical and chemical properties for each sample location. "Subplot_ground_flora.txt" provides subplot estimates of cover for each ground flora species in each each subplot; "Plot_ground_flora.txt" provides plot-level estimates of cover for each ground flora species in each plot. "Woody_stems.txt" provides diameter at breast height measurements and height estimates for woody species with measurable diameters at 1.4 m. "Downed_wood_less_than_3_in_diameter.txt"...
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Containment ponds at uranium mines in the Grand Canyon region have been suspected to pose an attractive nuisance to local wildlife in this arid landscape. To determine the presence of bird species at uranium mine openings, we surveyed the bird community in the area surrounding the mines repeatedly within one year and summarized species occurrence. We observed 35 species of birds directly using the uranium mine containment ponds including species of conservation concern, Pinyon Jay Gymnorhinus cyanocephalus and Brewer’s Sparrow Spizella breweri.
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