Faculty/Staff Directory

Gary Greer

Photo of Gary Greer

Email
greerg@gvsu.edu

Title
Professor

Office Address
3319 Kindschi Hall of Science

Office Phone
616-331-2813

Areas of Expertise
Allelopathy, Biodiversity, Invasive Species, Pteridology, Phenotypic Plasticity, Reproductive Biology, Allopolyploid Evolution.

Professional Societies

American Fern Society; Associate Editor, American Fern Journal, 2002-present.
Land Conservancy of West Michigan, Board & Stewardship committee member.
Luquillo Long Term Ecological Research Station (Puerto Rico); Research Associate.
Michigan Academy of Sciences, Arts and Letters; Botany & Plant Ecology Chair, 2005-2008
Manuscript reviewer for a wide-range of botanically-oriented academic journals.
Proposal reviewer for a number of granting organizations.

Courses Taught at GVSU

BIO 105  Environmental Science
BIO 109  Plants in the World
BIO 121  General Biology II
BIO 303  Plants & Fungi
BIO 338  Environmental Ethics
BIO 403  Plant Structure and Function
BIO 433  Plant Ecology
BIO 495  Evolutionary Biology
BIO 580  Advanced Population Ecology

Research Interests

My research interests span a wide range of topics in plant ecology, listed below.  I encourage you to contact me if you are an undergraduate student or a prospective graduate student with shared interests. 

  1. Factors influencing the structure of epiphytic communities (particularly anatomical);
  2. pteridophyte (ferns & fern allies) biology, ecology & evolution;
  3. invasive species ecology (principally that of Ailanthus altissima (“Tree-of-Heaven”)).

Current Projects

  1. Factors influencing species distributions and community structure in lower-trunk epiphytic communities at mid-elevation rainforest in Puerto Rico.
  2. A heuristic model of phytohormonal controls of development of leptosporangiate fern gametophytes.
  3. Phenotypic plasticity of allelochemical production by Ailanthus altissima across a U.S. east-west continental transect.
  4. The importance of the wintergreen habit to growth and reproduction by Polystichum acrostichoides.

Education

Ph.D. - Ohio University, 1997
M.A. - Humboldt State University, 1991
B.A. - University of Northern Colorado, 1987

Recent Publications

Greer, G. K., M. A. Dietrich, and J. M. Lincoln.  Ailanthus altissima Stimulates Legume Nodulation in Trifolium pratense via Root Exudates: A Novel Mechanism Facilitating Invasion?  International Journal of Plant Sciences, 177:400-8.

Greer, G., Dietrich, M., DeVol, J., & Rebert, A. 2012. The effects of exogenous cytokinin on the morphology and gender of Osmunda regalis gametophytes. American Fern Journal, 102(1): 32-46.

Hollingsworth, S., Greer, G., & Andres, E. 2012.  Pheromonal Interactions Among Gametophytes of Osmundastrum cinnamomea and the Origins of Antheridiogen Systems in Leptosporangiate Ferns.  International Journal of Plant Sciences, 173:382-390.

Aldrich, P., J. S. Briguglio, S. N. Kapadia, M. U. Morker, A. Rawal, P. Kalra, C. D. Huebner, and G. K. Greer.  2010. Genetic Structure of the Invasive Tree Ailanthus altissima in Eastern United States Cities. Journal of Botany 2010:1-9.

Greer, G., Dietrich, M., DeVol, J. A., Rebert, A. 2009.  Morphological Functions of Endogenous Gibberellins in Leptosporangiate Gametophytes: Insights into the Evolution of Form and Gender Expression. Botanical Journal of the Linnaean Society 159:599-615

Greer, G. 2009.  Chance and Necessity: A Botanical Homage to Charles Darwin on His 200th Birthday. GVSU Interchange (not peer-reviewed).

Aldrich, P., A. Brusa, C. Heinz, G. Greer, and C. Huebner.  2008. Floral Visitation of the Invasive Stinking Ash in Western Suburban Chicago.  Transactions of the Illinois State Academy of Science, 101:1-12.

Greer, G. K. and D. Curry.  2004.  Pheromonal Interactions Among Cordate Gametophytes of Athyrium filix-femina. American Fern Journal 94:1-8.

Greer, G. K. and B. C. McCarthy.  2000.  Patterns of Growth and Reproduction in the Fern Polystichum acrostichoides.  American Fern Journal 90:60-76.

Greer, G. K. and B. C. McCarthy. 1999. Gametophytic Plasticity among Four Species of Homosporous Ferns with Contrasting Ecological Distributions.  International Journal of Plant Sciences 160: 879-886.

Greer, G. K. B. C. McCarthy, and R. M. Lloyd. 1997a. Factors Influencing the Distribution of Pteridophytes in a Southeastern Ohio Hardwood Forest.  Journal of the Torrey Botanical Society 124:11-21.

Greer, G. K. and B. C. McCarthy. 1997b. The Antheridiogen Neighborhood of Polystichum acrostichoides. International Journal of Plant Sciences 158:764-768.

Greer, G. K. 1993. The Influence of Soil Topography and Spore-Rain Density on Gender Expression in Gametophyte Populations of the Homosporous Fern Aspidotis densa (Brack. in Wilkes) Lellinger. American Fern Journal 84:54-59.

Recent Presentations

Biener, MJ. Epiphytic Fern Distribution. April 13, 2016. Student Scholars Day Poster Presentation, GVSU.

Kane, W., J. Toogood, and G. Greer.  March 22, 2014.  Trunk Position as a Function of Anatomical Scaling in Epiphytic Ferns.  Annual meeting of the Michigan Academy of Science Arts and Letters.

Greer, G., July 30, 2013.  A Working Model of the Physiological Controls of Leptosporangiate Fern Gametophyte Development.  Symposium: Frontiers in Gametophyte Biology, American Fern Society section, BOTANY 2013, New Orleans.  Invited.

Schmidt, T. and Greer, G., July 30, 2013.  Patterns in Pteridophyte Community Reassembly in Secondary Forests of Puerto Rico.  American Fern Society section, BOTANY 2013, New Orleans.

Schmidt, T. and Greer, G., July 30, 2013.  A Maxent Approach to Model Pteridophyte Community Reestablishment in Secondary Forests of Puerto Rico.  Conservation Biology section, BOTANY 2013, New Orleans.

Kupisz, N. and G. Greer.  May 29, 2013.  Comparison of Understory Biodiversity between Ailanthus altissima versus Native Tree Canopies in Two Disparate Forests.  Invasive Biology section, BOTANY 2013, New Orleans.  Poster.

Greer, G., May 30, 2013.  Pteridophyte Diversity and Ecology in Puerto Rico.  Presentation to Luquillo Long-Term Ecological Research Station, El Verde, Puerto Rico.  Invited.

Greer, G., Winther, J. L., Evans, T., Toogood, J. June 6, 2012. Community Assembly of Lower-Trunk Epiphytes At Mid-Elevation in El Yunque National Forest.  Annual Meeting of Luquillo Long-Term Ecological Research Station, San Juan, Puerto Rico.  Invited.

Greer, G., Schmidt, T., Menon, S. June 6, 2012. Predictive Modeling of Pteridophyte Community Reestablishment in Secondary Forests. Annual Meeting of Luquillo Long-Term Ecological Research Station, San Juan, Puerto Rico. Invited.

Greer, G. and M. Dietrich. 2011.  Adventures in Biological Space: Log-scales in the Biology Curriculum. GVSU Fall Science Update.

Greer, G. 2010.  The Power Law of Biology. GVSU Math Science Update.

Greer, G.  2009. Measuring Biodiversity: Concepts and Application.  GVSU Fall Science Update

Hollingsworth, S., E. Andres, and G. K. Greer. 2010. Gender Bending in Osmunda cinnamomea: A Tale of Two Pheromones?  Annual Meeting of the Michigan Academy of Arts Sciences and Letters, Calvin College, Grand Rapids, MI.

Lincoln, J., G. Greer, and M. Dietrich.  2009.  Ailanthus altissima Increases Nodulation in Trifolium pratense:  A Novel Weapon for an Invasive Species?  BOTANY 2009, Snowbird, Utah. Poster.

Greer, G. and E. Andres. 2009. Unraveling Gender Expression in Osmunda regalis: Implications for Fern Evolution.  Annual Meeting of Michigan Academy of Arts Sciences and Letters, Wayne State University, Detroit MI.

Greer, G., 2009.  Is Allopolyploid Evolution in Ferns a Species Pump? Annual Meeting of the Michigan Academy of Arts Sciences and Letters, Wayne State University, Detroit MI.

Greer, G.  2008. When Evolution Jumps. GVSU Fall Science Update

Greer, G. K. and P. Aldrich. 2007.  Plasticity in Phytotoxin Production by Ailanthus altissima Across a U.S. Megatransect.  BOTANY 2007, Chicago.  Poster.

Boadway, C. and G. K. Greer. 2007. Growth & Nodulation in Trifolium pratense & Glycine max in Response to Ailanthus altissima. BOTANY 2007, Chicago.  Poster.

Aldrich, P. , A. Ahmed, N. Ayub, J. Briguglio, S. Kapadia, M. Morker, C. Ondracek, A. Rawal, A. Salam, C. Huebner, and G. K. Greer.  2007. Genome Scans of Adaptive Diversity of the Invasive Tree, Ailanthus altissima.  BOTANY 2007, Chicago.   Poster.

Greer, G. K., E. Lindblom, J. Dock, and P. Aldrich. 2007. Plasticity in Phytotoxin Production by Ailanthus altissima Across a U.S. Megatransect.  Michigan Academy of Sciences, Arts, & Letters, 2007.

Dock, J., H. Reed, and G. K. Greer. 2006. Stimulation of Legume Nodulation by Root Exudates of Ailanthus altissima.  Botany and Plant Ecology section.  Michigan Academy of Sciences, Arts, & Letters, 2006.

May, J., R. Morgan, P. Aldrich and G. K. Greer. 2006. Stimulated Growth of Azotobacter vinelandii by Root Extracts of Ailanthus altissima.  Botany and Plant Ecology section.  Michigan Academy of Sciences, Arts, & Letters, 2006.

Greer, G. K.  2005. Comparison of Understory Diversity Beneath the Invasive Tree Ailanthus altissima versus Native Trees in a Forest in West Virginia. BOTANY 2005, Austin, TX.  Poster.

DeVol, J., A. Rebert, G. Greer, and M. Dietrich. 2005. Effects of Exogenous Cytokinin Application on Morphological Development of Gametophytes of the Fern Osmunda regalis.  BOTANY 2005, Austin, TX.

Rebert, A., J. DeVol, M. Dietrich and G. Greer. 2005. Blocking the Gibberellin Pathway Inhibits Morphological Development of the Gametophyte of the Fern Osmunda regalis.  BOTANY 2005, Austin, TX.  Poster.

Aldrich, P., C. Ondracek, D. Shiao, A. Rawal, S. Kapadia, S. Nasaruddin, K. Sokolowski, C. and G. Greer.  2005.  Molecular genetic variation in U.S. populations of the invasive tree Ailanthus altissima (Simaroubaceae).  BOTANY 2005, Austin, TX. 

Rebert, A., J. DeVol, M. Dietrich,  and G. Greer. 2005. Blocking the Gibberillin Pathway Inhibits Morphological Development of the Gametophyte of the Fern Osmunda regalis.  Michigan Academy of Science, Arts and Letters, Ypsilanti, MI.

DeVol, J., A. Rebert, G. Greer, and M. Dietrich. 2005. Effects of Exogenous Cytokinin Application on Morphological Development of Gametophytes of the Fern Osmunda regalis.  Michigan Academy of Science, Arts and Letters, Ypsilanti, MI.

Greer, G. K. and Aldrich, P.  2005. Genetic and Biochemical Variation in North American Ailanthus altissima, Summary of a Research Program.  16th USDA Interagency Forum on Invasive Species, Annapolis, MA.  Invited.

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