Provenance of late Wisconsinan (Woodfordian) till and origin of the Decatur sublobe, east-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.

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Plant and Insect Remains from the Wisconsinan Interstadial/Stadial Transition at Wedron, North-Central Illinois

Quaternary Research ◽

10.1016/0033-5894(90)90064-r ◽

1990 ◽

Vol 33 (3) ◽

pp. 387-399 ◽

Cited By ~ 22

Author(s):

Clarke E. Garry ◽

Donald P. Schwert ◽

Richard G. Baker ◽

Tim J. Kemmis ◽

Diana G. Horton ◽

...

Keyword(s):

Boreal Forest ◽

Ground Beetle ◽

Plant Macrofossils ◽

Climatic Conditions ◽

Silica Sand ◽

Insect Fauna ◽

Vaccinium Uliginosum ◽

Radiocarbon Age ◽

Late Wisconsinan ◽

Central Illinois

AbstractOrganic material exposed within a small swale fill in Pit 6 of the Wedron Silica Sand Co. near Wedron in LaSalle County, Illinois, includes well-preserved pollen, plant macrofossils, and insect remains. This material occurs in slackwater sediment in the lower part of the Peddicord Formation, which was deposited as existing valleys were dammed by fluvial aggradation during the initial late Wisconsinan advance of Laurentide ice into the Wedron area. Wood from the organic horizon has a radiocarbon age of 21,460 ± 470 yr B.P. (ISGS-1486). The pollen spectrum is dominated byPicea, Pinus, and Cyperaceae. Plant macrofossils comprise a mix of boreal-forest taxa, includingPicea, Larix laricina, and the mossCampylium stellatum; subarctic species includingBetula glandulosa, Empetrum nigrum, andSelaginella selaginoides; along with the predominantly arcticVaccinium uliginosumvar.alpinum, Dryas integrifolia, andRhododendron lapponicum. The insect fauna contains the western montane ground beetleOpisthius richardsoni; several arctic-subarctic ground beetles includingDiacheila polita, Helophorus sibiricus, andPterostichus (Cryobius) caribou; and a diverse assemblage of insects that today inhabit the boreal forest. We interpret the biotic record to record a phase in the transition from closed boreal forest to open tundra as climatic conditions deteriorated in advance of continental glaciation.

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

Canadian Journal of Zoology ◽

10.1139/z92-138 ◽

1992 ◽

Vol 70 (5) ◽

pp. 968-973 ◽

Cited By ~ 11

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.

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

Canadian Journal of Forest Research ◽

10.1139/x2012-062 ◽

2012 ◽

Vol 42 (6) ◽

pp. 1050-1059 ◽

Cited By ~ 62

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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