Janice L Albers

Fish population model R code

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...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service

Reproductive strategy, spawning induction, spawning temperatures and early life history of captive sicklefin chub Macrhybopsis meeki-Data

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...

Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Columbia Environmental Research Center, Lower Missouri River, Missouri, Missouri River, USGS Science Data Catalog (SDC), All tags... batch spawning, captive spawning, environmental health, fecundity, lithopelagophil, Fewer tags

Fecundity of Sicklefin (Macrhybopsis meeki) and Shoal Chub (M. hyostoma)

Attributes measured to estimate total fecundity for two Macrhybopsis species typically found in the lower Missouri river

Tags: Biota, Missouri river, Natural Resource Management, USGS Science Data Catalog (SDC), shoal chub, All tags... sicklefin chub, Fewer tags

Missouri River juvenile sturgeon and adult chub fish weight and behavior

The study was designed to assess the strength of the innate linkage of substrate and food in foraging by early juvenile Pallid and Shovelnose Sturgeon and their hybrids and adult Sicklefin and Shoal Chub. The data include information on the fish weights throughout the duration of the experiment as well as observed fish behavior data. Wet weights from fish were recorded to monitor feeding consumption and the behavior data was generated in response to watching the fish during feeding. Information found in the fish weights data table includes the fish name, the tank number, the food treatment given, the light treatment given, the week of the trial, the date when the weight was taken, the substrate material, where food...

Tags: Aquatic Biology, Columbia Environmental Research Center, Ecology, Kansas River, Mississippi River, All tags... Missouri River, Scaphirhynchus albus, Scaphirhynchus platorynchus, USGS Science Data Catalog (SDC), animal behavior, biota, endangered species, fish, food availability, habitat choice, pallid sturgeon, shoal chub, shovelnose sturgeon, sicklefin chub, substrate selection, Fewer tags

Terrestrial Invertebrate Diversity and Occurrence in Restored Hardwood Forest Floodplains, Indiana, United States, June – August 2016

To determine the progress of restoration, insect populations were sampled at four mitigation sites using walking butterfly transects and Malaise/pitfall insect traps. The data consists of date, time, type and placement of traps, as well as number and order of species found.

Tags: Active sampling, Bell tract, DeKalb County, IN, Bluffton Natural Area, Wells County, IN, Butterflies, Deciduous forest, All tags... Deetz Nature Preserve, Allen County, IN, Ecology, Forest insects, Forest succession, Holden tract, Steuben County, IN, Malaise insect traps, Passive sampling, Pollinating insects, Riparian hardwood forests, USGS Science Data Catalog (SDC), biodiversity, biota, forest ecosystems, pollinators, wetland ecosystems, Fewer tags