Eastern Michigan University
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Catherine Bach

Emeritus Professor

Catherine Bach



  • B.A. Kalamazoo College, 1973
  • M.S. University of Michigan, 1976
  • Ph.D. University of Michigan, 1979

Interests and Expertise

The focus of my research is on plant/animal interactions, with an emphasis on the role of insect herbivory in structuring plant populations and communities. I am especially interested in how habitat fragmentation influences plant/animal interactions.  My current research projects include studies of: (1) effects of forest fragmentation on herbivory, pollination, and seed dispersal of mistletoes in Australia and New Zealand, (2) ecology of hermit crabs in Hawaii, and (3) effects of herbivory on a threatened dune plant, pitcher’s thistle, in northern Michigan.


Hazlett, B. A. and C. E. Bach.  2012.  Does shell species occupied influence individuality and behavioral syndromes in the defensive behavior of three Hawaiian hermit crabs?  Marine and Freshwater Behavior and Physiology 45:111-120.

Bach, C. E. and B. A. Hazlett.  2009.  Shell shape affects the movement patterns and microhabitat choice of the hermit crabs Calcinus elegansC. laevimanus, and C. latens.  Journal of Experimental Marine Biology and Ecology 382:27–33.

McMahon S. and C. E. Bach.  2008.  A comparison of preference and performance of Erynnis baptisiae (Lepidoptera: Hesperiidae) on a native and an introduced host plant.  Great Lakes Entomologist 41:49-59.

Bach, C. E. and D. Kelly.  2007.  Mistletoe fruit-colour polymorphism and differential success in a habitat mosaic.  Austral Ecology 32: 509-514.

Bach, C. E., B. A Hazlett, and D. Rittschof.  2006.  Sex-specific differences and the role of predation in the interaction between the hermit crab, Pagurus longicarpus, and its epibiont, Hydractinia symbiolongicarpus.  Journal of Experimental Marine Biology and Ecology 133: 181-189.

Macdonald, K. P. and C. E. Bach.  2005.  Resistance and tolerance to herbivory in Salix cordata are affected by different environmental factors.  Ecological Entomology 30: 581-589.

Barton, B. J. and C. E. Bach.  2005.  Habitat use by the federally endangered Mitchell's satyr butterfly (Neonympha mitchelli mitchelli) in a Michigan prairie fen.  American Midland Naturalist 153:41-51.

Bach, C. E.  2001.  Long-term effects of insect herbivory and sand accretion on plant succession on sand dunes.  Ecology 82:1401-1416.

Bach, C. E.  2001.  Long-term effects of insect herbivory on responses by Salix cordata to sand accretion.  Ecology 82:397-409.

Recipient of the 2003 Ronald W. Collins Distinguished Faculty Scholarly/Creative Activity Award

The Biology Department is part of the College of Arts & Sciences, 214 Pray-Harrold