8 Result(s)
within
James A. Perry
Life Sciences
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Article
Open AccessAssociations of genome-wide and regional autozygosity with 96 complex traits in old order Amish
Background: Autozygosity, the proportion of the genome that is homozygous by descent, has been associated with variation in multiple health-related traits impacting evolutionary fitness. Autozygosity (FROH) is ty...
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Article
Open AccessWhole genome sequence association analysis of fasting glucose and fasting insulin levels in diverse cohorts from the NHLBI TOPMed program
The genetic determinants of fasting glucose (FG) and fasting insulin (FI) have been studied mostly through genome arrays, resulting in over 100 associated variants. We extended this work with high-coverage who...
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Article
Drift and benthic invertebrate responses to stepwise and abrupt increases in non-scouring flow
We conducted two experiments to assess drift and benthic invertebrate responses to stepwise and abrupt changes in non-scouring flow in gravel-bed experimental streams. Intuitively, a stepwise flow increase sho...
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Article
Decomposition rates and phosphorus concentrations of purple Loosestrife (Lythrum salicaria) and Cattail (Typha spp.) in fourteen Minnesota wetlands
Purple Loosestrife is rapidly displacing native vegetation in North American wetlands. Associated changes in wetland plant communities are well understood. Effects of Loosestrife invasion on nutrient cycling a...
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Article
Litter processing in diffuse and conduit springs
We used bedrock geology and prior water chemistry data to classify and choose 4 conduit and 4 diffuse flow springs in a karst region of southeast Minnesota. Decomposition processes and chemical/physical condit...
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Article
The combined effects of chlorine and ammonia on litter breakdown in outdoor experimental streams
The response of Potamogeton crispus L. breakdown to controlled doses of different levels of chlorine and chlorine + ammonia was investigated over two years in outdoor experimental streams. In 1985, downstream rif...
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Chapter
Biomonitoring: Closing the Loop in the Environmental Sciences
For the purposes of this chapter we define biomonitoring as the analysis of the performance of living systems structured to provide essential information for decision making. Although some form of biomonitoring h...
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Article
The longitudinal distribution of riverine benthos: A river dis-continuum?
We used several techniques to analyze 10–11 collections from each of 13 stations along a mountain stream gradient to examine the hypothesis that there was a statistically significant (p < 0.05) uniform downstr...
