Progress 08/01/24 to 07/31/25
Outputs Target Audience:The target audience includes, but is not limited to natural resource, agricultural sciences, and environmental science researchers. In addition to these practitioners, the general public will benefit from the research outcomes with increased knowledge on the impacts of climate change. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?We have established a working agreement with the Council of American Overseas Research Centers (CAORC) program to provide an overseas research training opportunity for Center participants. During this training opportunity, Center of Excellence participants will have an opportunity to travel abroad to train with researchers in other countries. Three of the Center participants (Drs. Chandra Reddy, De'Etra Young, and William Sutton) traveled to Dakar, Senegal in December 2023 (December 12th- 19th) for an initial site visit for the faculty overseas training seminar. During the initial site visit we met with the ministers of agriculture, West Africa Research Center, and the Centre de Suivi Ecologique. We had a faculty travel seminar scheduled for India during May 2025, but had to cancel the event due to the federal funding freeze of this agreement. How have the results been disseminated to communities of interest?Results have been disseminated to the larger COE-NREE during the 2024 Association of Research Directors (ARD) Meeting in Nashville Tennessee. At this meeting we presented the COE-NREE overview during the Center of Excellence breakout session. We will continue to ramp up our Center website that will include updates on Center activities, along with short bios for each Center researcher. What do you plan to do during the next reporting period to accomplish the goals?As of now, all Center activities have been halted due to a federal funding freeze related to this agreement. Pending activation of the funds, the COE-NREE participants will continue original planned research objectives within each of the primary Thrust Areas. In addition to this research, we will also establish plans for the CAORC overseas research opportunity. All Center participants will have the opportunity to apply and travel during this international research/training effort. Potential travel locations for the initial CAORC include Senegal and/or other localities.
Impacts What was accomplished under these goals?
Thrust Area 1: We have established research plots in three geographic localities, including the Bankhead National Forest (Alabama), Chipola Experimental Forest (Florida), and Land Between the Lakes National Recreation Area (Tennessee). We have supported 6 students that are currently conducting graduate and undergraduate research theses. A total of three students are currently pursuing a postgraduate degree with the Center. In terms of new technologies, we are utilizing remote sensing technologies, light detection, radar (LiDAR) imagery, radiotelemetry, and Autonomous Recording Devices (ARD) to monitor wildlife populations remotely. Future efforts will include continued monitoring of forested environments to evaluate the impacts of management on forest structure, wildlife populations, biomass production, and carbon sequestration in southeastern forested environments. We have increased sampling efforts in the Bankhead National Forest project to include remote camera sampling for increased detection of rare species such as the northern pine snake (Pituophis melanoleucus) and spotted skunk (Spilogale putorius). We are currently completing analysis of herpetofaunal field data collected during summer 2023 and 2024 from the 16 longleaf pine forest stands consisting of four forest treatments along a restoration chronosequence. We surveyed stands using a passive sampling design that consisted of three drift-fences outfitted with box traps and pitfall traps conducive for sampling amphibians and reptiles. In total, we have documented clear effects of restoration on species occurrence and have noted that rare and conservation concern species tend to occur in forest stands with recent prescribed burn management. In addition to herpetofaunal encounter data, we also monitored avian occupancy in the same forest stand chronosequence. Each stand was surveyed via a transect approach three times throughout the breeding season. All data have been entered, and we have conducted preliminary data analyses. During the first field season, we recorded 64 species and 1853 detections. During the 2024 field season, we repeated sampling in all stands to create a database that contains repeated temporal sampling data. Overall, this project is critical for the continuation of a long-term collaborative relationship that we have established with the USDA Forest Service's Southern Research Station and Bankhead National Forest. For the soil carbon study that is currently being conducted in the Chippola National Forest, we have completed the sample processing in preparation for the fractionation process.The samples processed included baseline samples, after drum chopping samples and after fire samples. We have set up a litter decomposition study that will determine the microbial influence on biogeochemistry dynamics, including soil carbon thermal stability, carbon, nitrogen and isotopes. We also plan to sequentially retrieve litter decomposition bags from the field for processing and microbial analysis. Thrust Area 2: A variety of field trials and laboratory investigations have been initiated across multiple research objectives. Nine students are currently completing graduate and undergraduate research theses. Three students pursuing a post-graduate degree are either supported directly by the COE-NREE or are completing research on topics germane to the program. We are utilizing drone technology, cryopreservation, and size fractionalization for sorghum microspores, documentation of new germplasm and testing of new Sorghum and Amaranth genotypes, and carbon sequestration of fish aquaculture operations. In terms of climate smart animal production, the preliminary reproductive performance across 111 heifer/cow exposures demonstrated that the Mashona x Dexter females (n = 57) had higher (P< 0.01) summer fertility rates (73.7%) compared to Dexter straightbred females (n = 54; 44.4%). Birth and weaning weight data on 66 progeny births to date are currently being processed. Related genomic work demonstrated the genetic diversity of the foundation TSU Mashona population relative to several other breeds, including commercial, heritage, and other tropically-adapted breeds. In terms of evaluating heat stress on physiological, hematological, immunological and metabolomic responses on ewes, we allocated14 ewes to heat stress (HT, n = 7) or cooling (CTL, n = 7) conditions for 6 weeks during the summer season. We found that the Temperature Humidity Index (THI) The THI for the HT and CTL groups ranged from 81.3 - 89.5 and from 73.5 - 75.6, respectively. The HT group presented a significant (P < 0.05) increase in respiratory rate when compared to the CTL group. Hematology analysis revealed a significant (P < 0.05) increase of neutrophils and a decrease in lymphocyte % at week 3 in the HT group. In terms of understanding how climate change and climate smart agricultural practices influence switchgrass production, we simulated the impacts of precipitation change on switchgrass productivity and soil CO2and NO2emissions. Our research evaluating Amaranth as a climate smart crop revealed that plant germplasm was researched to solve the problems of growing amaranth and sorghum in the hot and sometimes dry conditions of the southeastern part of the United States, specifically in the state of Tennessee and at TSU's AREC site in Nashville. We designed a field experiment to study two varieties of grain amaranth with agronomic management conditions developed at Tennessee State University including double row culture and mechanical tillage over three planting dates as the conditions of the TSU experimental field. We continued analysis of the field data from 2024 summer experiment with grain amaranth varieties, Hopi Red and TSU Tiger (planned new release).These experiments served as seed multiplication as well as observation trials with two block of each variety planted on 30 x 50 foot plots and evaluated manually and with drone flights and UAV image capture. Thrust Area 3: We have been able to implement research across multiple areas through field and laboratory research. In total, nine students are completing graduate and undergraduate research theses. In addition, numerous students have participated in experiential learning opportunities through this research since the project's inception. In terms of new technologies employed via this program, we are utilizing I-tree urban forest assessment technology, ArcGIS and remote sensing technologies to evaluate the impacts of anthropogenic disturbance on water quality, quantity, and urban forest cover. In terms of Harmful Algal Blooms (HABs) research, sampling continued through the summer and fall of 2024 for algal toxins in the TSU Research Wetland.This included synoptic grab samples and time-averaged SPATT samplers for microcystin, anatoxin, saxitoxin and cylindrospermopsin cyanotoxins.Other field parameters included pH, dissolved oxygen, temperature, specific conductance, chlorophyll-a and phycocyanin fluorescence, Secchi tube readings and some nutrient samples (NO3 and PO4). Samples were collected every 2 weeks during the sampling season through November, 2024.Sampling also extended to ponds at Metro Nashville parks (Sevier Lake, Lost Pond, Ted Rhodes Golf pond), two locations on JPP reservoir near water utility intakes, one location on Old Hickory reservoir near a utility intake and two sites on the Cumberland River associated with utility intakes.The goal was to determine if surface waters used by middle Tennesseans for drinking water were under threat of harmful algal blooms.This information is important to water utilities and others that use these waters for irrigation or drinking waters. Thrust Area 4: We have been working with the Council of American Overseas Research Centers (CAORC) to establish overseas faculty training opportunities. In addition to Senegal, we will likely explore other opportunities, including India.
Publications
- Type:
Other
Status:
Published
Year Published:
2025
Citation:
Byl, T.D., Moore, D.M., Cunningham, C., and Young, D., 2025, Science needs for determining the effects of climate change on harmful algal blooms in the southeastern United States: U.S. Geological Survey Open-File Report 20251004, 29 p., https://doi.org/10.3133/ofr20251004.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Byl, TD., Cunningham, C., Bradley, M., Gardner, K., Gibson, M., Kelley, N. 2024. Evidence of a red tide event in the late Cretaceous Period at Coon Creek Formation, Tennessee. 134th Meeting of the Tennessee Academy of Science, Lincoln Memorial University, Harrogate, TN Nov 23, 2024. www.tennacadsci.org/docs/2024TASProgram.pdf
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Cotton, A., Young, D., Byl, T.D., 2024. Determining if Bacillus bacteria breakdown algal toxins using sediment cores in an urban wetland, Nashville, TN. 134th Meeting of the Tennessee Academy of Science, Lincoln Memorial University, Harrogate, TN Nov 23, 2024. Second Place Oral Presentation. www.tennacadsci.org/docs/2024TASProgram.pdf
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2025
Citation:
Cotton, J.A., Byl, TD. 2025. Harmful algal bloom monitoring in the Tennessee State University wetland. Posters at the Capitol, Nashville, TN. February 2025. (also given as an oral presentation at the Tennessee State University Research Symposium, March 2025).
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Curry, S., Swanson, R., McKinney, M., 2024. Evaluating Plant Diversity of Green Roofs in Tennessee. 134th Meeting of the Tennessee Academy of Science, Lincoln Memorial University, Harrogate, TN Nov 23, 2024. www.tennacadsci.org/docs/2024TASProgram.pdf
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Hughes, K., J Carr, 2024. What is the quantity of microplastic found in plastic water bottles compared to other containers of water? 134th Meeting of the Tennessee Academy of Science, Lincoln Memorial University, Harrogate, TN Nov 23, 2024. https://www.tennacadsci.org/docs/2024TASProgram.pdf
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Joyner, A., Chen, M., McKinney, M., Carr, J. 2024. Urbanization and Water Quality: Insights from Knoxville's Urban and Mountainous Watersheds. 134th Meeting of the Tennessee Academy of Science, Lincoln Memorial University, Harrogate, TN Nov 23, 2024. www.tennacadsci.org/docs/2024TASProgram.pdf
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Moore, D., Archer, R., Hill, K., Byl, T.D., 2024. Increasing HAB Monitoring in Urban Environments and Addressing Diversity in the Geosciences through Illuminating Projects. ED33A-2279 American Geophysical Union conference, Washington DC. https://agu.confex.com/agu/agu24/meetingapp.cgi/Paper/1760721
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2025
Citation:
Oppong Judith, Clement E. Akumu, Samuel Dennis, and Stephanie Anyanwu. 2025. Leveraging Deep Learning for Weed Canopy Cover Mapping in Precision Agriculture. TNGIC Middle Tennessee Fall Regional Forum (October 31, 2024), Murfreesboro, TN.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Robinson, S., D. Walker, R. Brubaker, A. Cochran, and W. B. Sutton. 2024. Longleaf Pine Restoration, Habitat Management, & Pathogen Prevalence: Insights into Upland Squamate Ecology in William B. Bankhead National Forest. The Gopher Tortoise Council Annual Meeting, St. Petersburg, Florida.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Robinson, S., D. Walker, R. Brubaker, A. Cochran, and W. B. Sutton. 2024. Monitoring Herpetofauna and Ophidiomyces ophidiicola Prevalence in Response to Longleaf Pine Forest Restoration in William B. Bankhead National Forest. The Wildlife Society Annual National Meeting, Baltimore, Maryland.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Robinson, S., R. Brubaker, A. Cochran, and W. B. Sutton. 2024. Monitoring the Response of Herpetofaunal Assemblages to Longleaf Pine Forest Restoration in William B. Bankhead National Forest. The Tennessee Herpetological Society Annual Meeting, Bristol. Tennessee.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Robinson, S., D. Walker, R. Brubaker, A. Cochran, and W. B. Sutton. 2024. Monitoring herpetofauna and Ophidiomyces ophidiicola prevalence in response to Longleaf Pine Forest Restoration in Bankhead National Forest. The Alabama Chapter of the Wildlife Society Annual Meeting, Clanton, Alabama.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2025
Citation:
Salas, J.L., Byl, TD. 2025. Tree survey of invasive trees near a wetland scheduled for restoration. Posters at the Capitol. Nashville, TN, February 2025.
- Type:
Other
Status:
Other
Year Published:
2025
Citation:
Sutton, W. B. 2025. Managing southeastern forests for the conservation of amphibian and reptile biodiversity. Department of Environmental Sciences Seminar Series. Tennessee State University. March, 2025.
- Type:
Other
Status:
Other
Year Published:
2025
Citation:
Sutton, W. B. 2025. The Center of Excellence for Natural Resources, Energy, and the Environment: A Climate Smart Approach. TSU-UTK Summit for Research Collaboration. McMinville, Tennessee, February 2025.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2024
Citation:
Williams, EK., Moore, D., Byl, TD., Snow, E. 2024. Diversifying the geosciences. ED31A-03. American Geophysical Union conference, Washington DC. https://agu.confex.com/agu/agu24/meetingapp.cgi/Paper/1565582
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