Enebak, Scott

Scott Enebak, Associate Dean of Academic Affairs

SFWS 3301 | (334) 844-1028 | enebasa@auburn.edu
Southern Forest Nursery Management Cooperative
Dr. Scott Enebak’s website
BS, University of Minnesota 1984, Forestry/Silviculture
MS, University of Minnesota, 1988, Plant Pathology
PhD, West Virginia University, 1992, Plant Pathology
AuthorsYearTitlePublishing InfoLink
Cram, M.M, S.A. Enebak, S.W. Fraedrich, L.D. Dwinell, and S.J. Zarnoch.2007Evaluation of fumigants, EPTC herbicide and Paenibacillus macerans in the production of loblolly pine seedlings. Forest Science 53:73-83.
Enebak, S.A.2005Rhizobacteria isolated from loblolly pine seedlings mediate growth-promotion of greenhouse-grown loblolly, slash and longleaf pine seedlings.For. Sci. 51:541-545.
Enebak, S.A., D.P. Jackson, T.E. Starkey, and M. Quicke. 2013Evaluation of methyl bromide alternatives on loblolly pine production and seedling quality over three growing seasons at the Pine Hill Nursery in Camden, Alabama. Journal Horticulture and Forestry. 6:41-47.
Enebak, S.A., Starkey, T.E. and M. Quicke. 2011Effect of methyl bromide alternatives on seedling quality, nematodes and pathogenic soil fungi at the Blenheim and Trenton Nurseries in South Carolina: 2008-2009. Journal of Horticulture and Forestry. 3:379-487.
Enebak, S.A., Starkey, T.E. and M. Quicke. 2011Effect of methyl bromide alternatives on seedling quality, nematodes and pathogenic soil fungi at the Jesup and Glennville Nurseries in Georgia: 2007-2008.Journal of Horticulture and Forestry. 3:150-158.
Enebak, S.A., Starkey, T.E. and M. Quicke.2012Effect of methyl bromide alternatives on seedling quality, nematodes and pathogenic soil fungi at the Jesup and Glennville Nurseries in Georgia: 2007-2008. Journal of Hort and Forestry. 4:1-7.
Enebak, S.A., T.E. Starkey, M. Quicke, and D.P. Jackson. 2013Evaluation of Plastic Tarps, Reduced Rates and Low-Impact Application Methods of Soil Fumigants on Loblolly Pine Seedling Production. Open Forest Science Journal. 6:7-13.
Harper, R.A., G. Hernández, J. Arseneault, K.J. Woodruff, S.A. Enebak, R.P. Overton, and D.L. Haase. 2014Forest Nursery Seedling Production in the United States; Fiscal Year 2013.Tree Planters’ Notes 57:62-66.
Harper, R.A., G. Hernandez, J. Arseneault, M. Bryntesen, S.A. Enebak, and R. Overton.2013Forest Nursery Seedling Production in the United States – Fiscal Year 2012.Tree Planters Notes. 56:72-75.
Jackson, D.P., Enebak, S.A. and South, D.B. 2011Survival of southern pine seedlings after inoculations with Pythium and cold storage in the presence of peat moss.Forest Pathology. 41:159-164.
Jackson, D.P., Enebak, S.A. and South, D.B.2012Effects of Pythium species and time in cold storage on the survival of bareroot and container-grown southern pine seedlings.ISRN Ecology 1:1-7. doi:10.5402/2012/874970.
Jackson, D.P., Enebak, S.A. and South, D.B.2012Survival of southern pine seedlings after inoculations with Pythium and cold storage in the presence of peat moss.Forest Pathology. 42:44-51.
Jackson, D.P., S.A. Enebak, and D.B. South.2012Pythium species and cold storage affect the root growth potential and survival of loblolly (Pinus taeda L.) and slash pine (Pinus elliottii Engelm.) seedlings.Journal of Horticulture and Forestry 4:114-119.
Laband, D.N., W. C. Morse, A. H. Chappelka, and S.A. Enebak. 2013The Toomer’s OaksTragedy and the Importance of Cultural Environmental Services.Southern Journal of Applied Forestry.
Laband, D.N., W.C. Morse, S.A. Enebak and A.H. Chappelka.2012The Toomer’s Oaks tragedy and the importance of cultural environmental services.South. J. Appl. For. 36(4):220-222.
Matusick, G, Eckhardt, L.G. and Enebak, S.A. 2008Virulence of Leptographium serpens on longleaf pine seedlings under varying soil moisture regimesPlant Disease. 92:1574-1576.
South, D.B and Enebak, S.A.2006Integrated pest management practices in southern pine nurseries.New Forests. 31:1-19.
South, D.B., S.A. Enebak, and T.E. Hill. 2007Tolerance of young loblolly pine (Pinus taeda) seedlings to post-emergence applications of MSMA.New Zealand Journal of Forestry 52:28-34.
South, D.B., S.A. Enebak, T.E. Hill.2007Tolerance of young loblolly pine (Pinus taeda) seedlings to postemergence applications of MSMA.New Zealand Journal of Forestry 52(3):28-35
South, D.S., Jackson, D.P, Starkey, T.E. and Enebak, S.A.2012Planting deep increases early survival and growth of Pinus echinata seedlings.The Open Source Forest Science Journal. 5: 33-41.
Starkey T.E. and S.A. Enebak.2014Nursery Lifter Operation Affects Root Growth Potential of Pine Seedlings.Tree Planters’ Notes 56:35-42.
Starkey, T.E, Enebak, S.A., South, D.B. and Cross, R.E.2012Particle size and composition of polymer root gels affect loblolly pine seedling survival.Native Plants Journal. 13:19-26.
Starkey, T.E., Enebak, S.A. and South, D.B. 2015Forest Seedling Practices in the Southern United States: Container Nurseries.Tree Planters’ Notes. 58:18-26.
Starkey, T.E., Enebak, S.A. and South, D.B.2015Forest Seedling Practices in the Southern United States: Bareroot Nurseries.Tree Planters’ Notes. 58:4-17.
Current Projects:

Southern Piedmont grassland community structure and functioning under future climate scenarios of elevated tropospheric ozone and altered rainfall amounts

The physical and chemical climate of the earth has changed rapidly over the last 100 years and is predicted to change dramatically in the future. Models predict that tropospheric ozone (O3) concentrations will increase on a global basis for the next 50 yrs while summer rainfall may either decrease or increase ~10–20% based on model predictions in the Southeastern United States. This region is experiencing rapid population growth and includes a number of areas in noncompliance with current NAAQS for O3. Increases in O3 in combination with altered rainfall amounts have been little studied in grassland ecosystems in the Southern Piedmont region which covers 17 million ha from central Virginia into eastern Alabama. The study area is approximately 5 km from Auburn University and contains open-top chambers (OTCs), equipment and monitoring sheds, office and laboratory facilities. To establish a typical managed grassland community, 12 OTCs were seeded (March 2007) with a mixture of tall fescue (Festuca arundinacea, C3, cool-season grass), common bermudagrass (Cynodon dactylon, C4 warm-season grass), dallisgrass (Paspalum dilatatum C4, warm-season grass) and ladino clover (Trifolium repens, C3 cool-season legume). Our global hypothesis is that exposure to elevated O3 alone or in combination with altered rainfall amounts modifies resource acquisition and biomass allocation of dominant, managed-grassland species in such a way that community structure and functioning of the system is impacted. Specific hypotheses include: 1) Species with higher stomatal conductance (gs) will be more adversely affected by elevated O3 than those with lower gs because uptake (and hence dose) will be greater, resulting in shifts in productivity and species composition and productivity over time; 2) The effects of O3 and altered rainfall amounts will be mediated by changes in gs and canopy-level responses such as changes in cover and structure;  and 3) Elevated O3 will increase production of plant secondary metabolites, notably lignin, and these shifts in energy allocation will be altered by either decreased or increased rainfall additions.  Various field measurements (species abundance, richness, gas exchange and water relations,) and laboratory methodologies (plant defensive compounds, chlorophyll analysis) will be used to test the specific hypotheses. Integration of various measures of diversity and productivity and underlying physiological and biochemical responses will enable a more complete characterization and modeling of potential impacts of future climate change scenarios on these plant communities. Funding is provided through USDA Hatch funds.

Quantifying urban forest structure, functioning and economic value in a small, expanding southern metropolis

An urban forest can be defined as the sum total of all vegetation growing in an urban metropolis. Some of these forested areas may have been intentionally planted along streets or around building structures. Also, many trees whether planted or natural are in landscapes such as parks, golf courses and yards.  Other forested areas have been left over from small tracts of land preserved during development or left unattended. When buildings and other structures are included in the urban forest matrix, a complex ecosystem exists. Initially, urban forests were mainly recognized and managed for aesthetics. It is now known, however that these ecosystems serve many essential functions including pollution removal, carbon storage, erosion control, energy  savings and other vital ecosystem services.  Quantifying these functions and determining the compensatory values of these forests is essential to their management (vertical structure, density, species composition, etc.) and provides city officials with needed information regarding the planning and budgetary ($ for maintenance, tree removal, planting, etc.) process and development of protection measures (such as tree ordinances, etc.). There has been some research in this area, however, the vast majority has occurred in large metropolitan city primarily in the North-Central and Northeastern US. We (Art Chappelka & Ed Loewenstein Investigators) have developed a project to quantify the structure function and economic value of the urban forest in a small, rapidly expanding urban metropolis (Auburn, Alabama) in the southern United States. The specific objectives are 1) Analysis of structural components, including species composition and distribution patterns in the urban forest; 2) Estimation of carbon storage and air pollution removal by the forest and comparison among forest types; and 3) Development of new algorithms for Urban Forest Effects (UFORE) model specifically for local southern vegetation. Funding is partially provided through the USDA McStennis program.

Urban Forest Inventory: UFORE Pilot Project at Auburn University

Urban Forestry involves the planning, establishment, protection, and management of trees and associated plants, individually, in small groups, or under forested conditions within different metropolitan areas (Cites, suburbs, towns, etc.). Programs within the discipline often include the following: Program planning, tree inventories, tree planting, tree maintenance, tree preservation and public education. These elements are not mutually exclusive. As part of the planning process, an inventory of tree resources is a fundamental initial phase for most programs. Street tree inventories have been commonplace, but given the use of advanced technologies one is now able to determine the benefits (C sequestration, cooling, reduction in pollutants, etc.) and liabilities (hazards, encroachment with power-lines, etc.) of the entire urban forest. In that vein, we are using a computer-based model (UFORE) to analyze field-collected data to provide information on the urban forest structure and function on the campus of Auburn University. The project is interdisciplinary in nature involving investigators from The School of Forestry & Wildlife Sciences, Horticulture and the US Forest Service. The overall goal is to develop a 100% inventory of trees on the core campus of Auburn University using the UFORE protocol for the purpose of validating model components in the region, and investigating extended and optimal use of the program. An addition goal is to provide a database that can be utilized by University personnel in planting and maintaining adequate greenspace on campus. Specific objectives include: 1) Conduct a 100% inventory in UFORE compatible form and complete GIS database layer from the data (i.e. tree locations will be captured); 2) Analyze model components relative to southern species & models, and make UFORE plot sampling comparisons with the 100% inventory; and 3) Develop class & field training material and conduct a regionally advertised training class for UFORE including QA/QC components. A graduate student: Nick Martin (MS) is conducting research on different aspects of this project.

Teaching Responsibilities:
•Advanced Studies on Effects of Air Pollution (graduate level): 1992,1994,1996,1998, 2000, 2003,2005-2006
•Natural Resource Policy Analysis and Administration (graduate level-team taught): 2007
•Wildlife Resource Philosophy and Policy (undergraduate level): 2008
•Wildland Recreation Philosophy and Policy (undergraduate level): 1998-2001, 2003
•Urban Forestry (advanced undergraduate/graduate level): 1990-1997
•Introduction to Renewable Natural Resources (undergraduate level): 2003-2006

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