Mussie Y. Habteselassie Crop and Soil Sciences UGA Griffin Campus
Mussie Y. Habteselassie Crop and Soil Sciences UGA Griffin Campus
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Transcript of Mussie Y. Habteselassie Crop and Soil Sciences UGA Griffin Campus
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Mussie Y. Habteselassie Crop and Soil Sciences
UGA Griffin Campus
P & T Presentation2013 SPRING FACULTY MEETING, MACON, GA
THE SOIL MICROBIOLOGY PROGRAM
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70% research & 30% teaching appointment
Outline:
Research Program (sample projects)
Teaching Responsibilities
INTRODUCTION
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RESEARCH PROGRAM
Environmental Soil Microbiology Program (ESM)
I. The Ecology Of Human And Animal Pathogens In Soils
II. Environmental Services Of Soil Microbial Community
III. Microbial Water Quality
http://www.soilmicrobiology.griffin.uga.edu/index.html
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I. Ecology Of Human And Animal Pathogens In Soils
Use of model microorganisms Lux/GFP marked E. coli
O157:H7/Salmonella spp Antibiotic resistant E. coli/Salmonella
spp
Ecology of pathogens in soils
Transmission to produce
Survival
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Current Projects
1. Salmonella And Norovirus Survival In Organic and Conventional Soils
2. The Role Of Microbial Diversity And Activity In The Suppression Of Salmonella Persistence In Soils
3. Soil Organic Matter Accumulation On Gloves During Lettuce Harvest and Its Effect On Pathogen Persistence: Co-PI On $338,414 Grant From UC Davis.
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Results so far….
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II. Environmental Services of Soil Microorganisms
Soil microbes & their environmental
services Pollutant remediation
N & C cycling
Approach
Molecular microbiology – targeting functional genes
Stable isotope techniques – process characterization
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Current Projects
4. N Cycling Under Contrasting Agricultural Management Systems
Organic vs conventional farming systems
USDA-AFRI Microbial Communities Program. Habteselassie, M.Y. (Co-PI):$499,894
Closely collaborates with Miguel
Fig. Simplified Internal Soil N
Cycle
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Results so far….
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5. The Dynamics of Ammonia Oxidizers In Pasture Lands Under Long-term Poultry Litter Application
Eatonton and Watkinsville long term field plots
In collaboration with Miguel Cabrera
Current Projects…
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Changes in soil N cycling organisms following repeated poultry litter application
Ammonia Oxidizing Bacteria
Ammonia Oxidizing Archaea
Treatment Plots – Litter @ different rates
Control Plots
Control Plots
Treatment Plots – Litter @ different rates
Results so far….
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6. Volatile Organic Compounds (VOC) Metabolizing Bacteria In Indoor Plants
In collaboration with S. Pennisi and S. Kays - Horticulture
Current Projects…
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South Korea: huge interest in phytoremediation
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Results so far….
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III. Microbial Water Quality
EmphasisSurvival in
contaminated water
Sources
Food safety link – use of contaminated water for
irrigation
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7. Impacts of On-site Wastewater Treatment Systems (OWTS) On Water Quality and Quantity In Streams Of Urbanizing Watersheds of Metro-Atlanta Area
Current Project
Supported by $567,000 NIFA Grant: M. Habteselassie, J. Clarke, D. Radcliffe, Q. Huang, M. Risse, E. Bauske, J. Mullen
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Study Site
Watershed Characteristics
OWTS Density Low High
Drainage area (mi2)
0.78 1.15
#OWTS/mi2
57 559
River Basins
Oconee and Ocmulgee
County Gwinnett
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Results so far…
2012: Habteselassie, M.Y. Radcliffe, D., Clarke, J.,… Evaluation of the impact of on-site wastewater treatment systems on water quality in urbanizing watersheds. In Annual Meetings Abstracts. ASA, CSSA, and SSSA, Madison, WI.
2012: Habteselassie, M.Y. Radcliffe, D., Clarke, J.,… Watershed-scale impacts of on-site wastewater treatment systems on water quality and quantity: Results for Water Quality Indicators. In Land Grant/See Grant National Water Conference, Portland, OR.
2012: Radcliffe, D., Clarke, J., Habteselassie, M.Y.,… Watershed-scale impacts of on-site wastewater treatment systems on water quality and quantity: Results for nitrogen and base-flow yield. In Land Grant/See Grant National Water Conference, Portland, OR.
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Results so far…
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TEACHING
# Courses Yr Taught Student #
1 *CRSS 4610/6610: Soil Microbiology
Every Fall 69
2 CRSS 3060: Soils and Hydrology Every Fall 23
3 CRSS 4580/6580: Soil Erosion and Conservation
2010 4
4 AESC 3920: Ag. and Environmental Sc. Internship
2010,
2011
2
5 AESC 4960: Undergraduate Research
2009 - 2012 3
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Required Courses
Course Name
CRSS 4610/6610 Soil Microbiology
CRSS 3060 Soils and Hydrology
AESC 4960 Undergraduate Research
AESC 3510
AESC 4190/6190
CRSS 4440/6440
CRSS 3050
…TEACHING
Environmental Resources Science Major @ the Griffin Campus
43%