Three-dimensional geologic maps of Quaternary sediments in east-central Illinois

10.3133/i2669 ◽  
2000 ◽  
Keyword(s):  
Three Dimensional ◽  
Quaternary Sediments ◽  
East Central ◽  
Geologic Maps ◽  
Central Illinois

scholarly journals Three-dimensional hydrostratigraphy and groundwater flow models in complex Quaternary deposits and weathered/fractured bedrock: evaluating increasing model complexity

2021 ◽  
Author(s):  
Susanne Charlotta Åberg ◽  
Annika Katarina Åberg ◽  
Kirsti Korkka-Niemi
Keyword(s):  
Groundwater Flow ◽  
Three Dimensional ◽  
Model Complexity ◽  
Quaternary Sediments ◽  
Fractured Bedrock ◽  
Flow Models ◽  
Flow Modelling ◽  
Crystalline Bedrock ◽  
Discharge Patterns ◽  
Geological Units

AbstractGreater complexity in three-dimensional (3D) model structures yields more plausible groundwater recharge/discharge patterns, especially in groundwater/surface-water interactions. The construction of a 3D hydrostratigraphic model prior to flow modelling is beneficial when the hydraulic conductivity of geological units varies considerably. A workflow for 3D hydrostratigraphic modelling with Leapfrog Geo and flow modelling with MODFLOW-NWT was developed. It was used to evaluate how the modelling results for groundwater flow and recharge/discharge patterns differ when using simple or more complex hydrostratigraphic models. The workflow was applied to a study site consisting of complex Quaternary sediments underlain by fractured and weathered crystalline bedrock. Increasing the hydrostratigraphic detail appeared to improve the fit between the observed and simulated water table, and created more plausible groundwater flow patterns. Interlayered zones of low and high conductivity disperse the recharge/discharge patterns, increasing the vertical flow component. Groundwater flow was predominantly horizontal in models in which Quaternary sediments and bedrock were simplified as one layer per unit. It appears to be important to define the interlayered low-conductivity units, which can limit groundwater infiltration and also affect groundwater discharge patterns. Explicit modelling with Leapfrog Geo was found to be effective but time-consuming in the generation of scattered and thin-layered strata.

Phosphorus Transport through Subsurface Drainage and Surface Runoff from a Flat Watershed in East Central Illinois, USA

2007 ◽  
Vol 36 (3) ◽  
pp. 681-693 ◽  
Author(s):  
A. S. Algoazany ◽  
P. K. Kalita ◽  
G. F. Czapar ◽  
J. K. Mitchell
Keyword(s):  
Surface Runoff ◽  
Subsurface Drainage ◽  
Phosphorus Transport ◽  
East Central ◽  
Central Illinois

Culex Population Dynamics and West Nile Virus Transmission in East-Central Illinois

2006 ◽  
Vol 22 (3) ◽  
pp. 390-400 ◽  
Author(s):  
Richard Lampman ◽  
Michael Slamecka ◽  
Nina Krasavin ◽  
Kenneth Kunkel ◽  
Robert Novak
Keyword(s):  
Population Dynamics ◽  
West Nile Virus ◽  
Virus Transmission ◽  
West Nile ◽  
East Central ◽  
West Nile Virus Transmission ◽  
Central Illinois

scholarly journals POPULATION ECOLOGY OF THE NORTHERN SLIMY SALAMANDER (PLETHODON GLUTINOSUS) IN EAST-CENTRAL ILLINOIS

2015 ◽  
pp. 17-21
Author(s):  
John A. Crawford ◽  
Andrew R. Kuhns ◽  
Mathys J. Meyer
Keyword(s):  
Population Density ◽  
Population Ecology ◽  
Demographic Data ◽  
Ecosystem Integrity ◽  
East Central ◽  
Plethodon Glutinosus ◽  
Capture Success ◽  
Plethodontid Salamanders ◽  
Management Plans ◽  
Central Illinois

The importance of plethodontid salamanders in forested habitats has been recognized for decades and more recently plethodontids have been touted as a model taxon for monitoring ecosystem integrity and recovery. However, basic demographic data that are crucial to conservation and management plans are currently lacking for many species and regions. The objectives of our study were to characterize the population density, biomass, and capture success of a peripheral population of Plethodon glutinosus to provide a comparison for eastern populations and set a baseline for future monitoring of Midwestern populations. We estimated the population density of P. glutinosus at our site to be 0.41 salamanders/m2, with an estimated biomass of 0.70 g/m2. We did not find any evidence for temperature or precipitation affecting capture success. Our results showed that our density estimate falls within the range of other population ecology studies of Plethodon and sets a baseline for other peripheral Midwestern populations.

Stability of white-tailed doe parturition ranges on a refuge in east-central Illinois

1992 ◽  
Vol 70 (5) ◽  
pp. 968-973 ◽  
Author(s):  
Charles M. Nixon ◽  
Lonnie P. Hansen ◽  
Paul A. Brewer ◽  
James E. Chelsvig
Keyword(s):  
Home Range ◽  
Social Groups ◽  
East Central ◽  
Seasonal Movements ◽  
Bottomland Forests ◽  
Successional Forests ◽  
Core Areas ◽  
Continued Use ◽  
Natal Home ◽  
Central Illinois

Stability and retention of parturition sites were examined for 17 white-tailed does (Odocoileus virginianus) radio-marked on an 800-ha forested area in Piatt County, east-central Illinois. Pre- and post-natal home range sizes were not significantly correlated with density of females, age of doe, litter size (postnatal range only), or sex of litter. As females aged, parturition sites moved closer to prenatal centers of home range activity (P < 0.02), and overlap of both pre- and post-natal home range boundaries increased in consecutive years (P < 0.001). Postnatal core areas of related females evidenced considerable overlap, whereas those of unrelated does were discrete. Breeding does used upland successional forests (< 60 years old) more than expected and bottomland forests less than expected (P < 0.05) as sites for parturition. Through seasonal movements, including migratory and dispersal behaviors, does in east-central Illinois, where forests are scarce, use all available sites suitable for parturition. Selection and retention of these parturition sites promote the development of matriarchal social groups, which ensures continued use of these sites by related females.

Using blends of cerambycid beetle pheromones and host plant volatiles to simultaneously attract a diversity of cerambycid species

2012 ◽  
Vol 42 (6) ◽  
pp. 1050-1059 ◽  
Author(s):  
Lawrence M. Hanks ◽  
Jocelyn G. Millar ◽  
Judith A. Mongold-Diers ◽  
Joseph C.H. Wong ◽  
Linnea R. Meier ◽  
...  
Keyword(s):  
Host Plant ◽  
Native Species ◽  
Plant Volatiles ◽  
Strong Inhibition ◽  
Host Plant Volatiles ◽  
East Central ◽  
Pheromone Components ◽  
Cerambycid Beetles ◽  
Multiple Species ◽  
Central Illinois

We evaluated the attraction of native species of cerambycid beetles to blends of cerambycid pheromones and the host plant volatiles ethanol and α-pinene to determine whether such blends could be effective lures for detecting and monitoring multiple species. The complete six-component blend of pheromones included racemic 3-hydroxy-2-hexanone, 2,3-hexanediol isomers, (E)-6,10-dimethyl-5,9-undecadien-2-ol and the corresponding acetate, 2-(undecyloxy)-ethanol, and racemic 2-methyl-1-butanol. Bioassays in east-central Illinois captured 3070 cerambycid beetles of 10 species, including four species in the subfamily Cerambycinae ( Neoclytus acuminatus (Fabricius, 1775), Neoclytus mucronatus (Fabricius, 1775), Phymatodes lengi Joutel, 1911, and Xylotrechus colonus (Fabricius, 1775)) and six species in the subfamily Laminiae ( Aegomorphus modestus (Gyllenhal in Schoenherr, 1817), Astyleiopus variegatus (Haldeman, 1847), Astylidius parvus (LeConte, 1873), Graphisurus fasciatus (DeGeer, 1775), Lepturges angulatus (LeConte, 1852), and Monochamus carolinensis (Olivier, 1792)). Beetles were attracted to their pheromone components within the blend, with inhibition only evident in one species. Host plant volatiles synergized attraction for some species, and synergism usually was attributed to ethanol, with α-pinene enhancing attraction only for the pine specialist M. carolinensis. The optimal strategy for targeting a broad range of cerambycid species would be to bait traps with a blend of several pheromones plus ethanol and α-pinene because synergism by these plant volatiles is critical for some species, whereas strong inhibition is uncommon.

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