Browsing College of Forestry, Wildlife and Environment (General) by Author "Lori Eckhardt, eckhalg@auburn.edu"

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Chemometric modeling of thermogravimetric data for the compositional analysis of forest biomass

Acquah, Gifty E.; Via, Brian K.; Fasina, Oladiran O.; Adhikari, Sushil; Billor, Nedret; Eckhardt, Lori G.; 0000-0003-4269-0903; 0000-0003-2676-7376; 0000-0003-4214-163X; 0000-0002-3270-8199 (2020-04-01)

The objective of this study was to investigated the use of chemometric modeling of thermogravimetric (TG) data as an alternative approach to estimate the chemical and proximate (i.e. volatile matter, fixed carbon and ash ...

Effects of elevated tropospheric ozone and fluctuating moisture supply on loblolly pine seedlings inoculated with root infecting ophiostomatoid fungi

Chieppa, Jeff; Eckhardt, Lori G.; Chappelka, Art; 0000-0001-9404-9638; 0000-0002-3270-8199 (2020-04-01)

Southern Pine Decline is a cause of premature mortality of Pinus species in the Southeastern United States. While the pathogenicity of ophiostomatoid fungi, associated with declining Pinus species, has been observed both ...

Genetically determined fungal pathogen tolerance and soil variation influence ectomycorrhizal traits of loblolly pine

Piculell, Bridget J.; Eckhardt, Lori G.; Hoeksema, Jason D.; 0000-0002-3270-8199 (2020-04-01)

Selection on genetically correlated traits within species can create indirect effects on one trait by selection on another. The consequences of these trait correlations are of interest because they may influence how suites ...

High Throughput Screening of Elite Loblolly Pine Families for Chemical and Bioenergy Traits with Near Infrared Spectroscopy

Acquah, Gifty E.; Via, Brian K.; Gallagher, Tom; Billor, Nedret; Fasina, Oladiran O.; Eckhardt, Lori G.; 0000-0003-4269-0903; 0000-0003-2676-7376; 0000-0003-4214-163X; 0000-0002-3270-8199 (2020-04-01)

Pinus taeda L. (loblolly pine) dominates 13.4 million ha of US southeastern forests and contributes over $30 billion to the economy of the region. The species will also form an important component of the renewable energy ...

Identifying Plant Part Composition of Forest Logging Residue Using Infrared Spectral Data and Linear Discriminant Analysis

Acquah, Gifty E.; Via, Brian K.; Billor, Nedret; Fasina, Oladiran O.; Eckhardt, Lori G.; 0000-0003-4269-0903 (2020-05-26)

As new markets, technologies and economies evolve in the low carbon bioeconomy, forest logging residue, a largely untapped renewable resource will play a vital role. The feedstock can however be variable depending on plant ...

The Impact of Drought and Vascular-Inhabiting Pathogen Invasion in Pinus taeda Health

Devkota, Pratima; Enebak, Scott A.; Eckhardt, Lori G.; 0000-0002-3270-8199 (2020-04-01)

The complex interaction of various biotic and abiotic factors may put the overall stand health of Pinus spp. at risk. A study was designed to determine the combined impact of drought and vascular-inhabiting fungi (Leptographium ...

Is natural defense capacity correlated with allocation of dry mass to the stem in loblolly pine?

Sayer, Mary Anne S.; Tyree, Michael C.; Blazier, Michael A.; Sun, Shi-Jean S.; Eckhardt, Lori G.; 0000-0002-3270-8199 (2020-06-09)

In addition to selecting loblolly pine (Pinus taeda L.) genotypes for superior growth, the concept of customized genetic selection may apply where tree vigor is threatened by insects and disease. A study conducted with ...

Microsatellite and mating type markers reveal unexpected patterns of genetic diversity in the pine root‐infecting fungus Grosmannia alacris

Duong, Tuan A.; De Beer, Z. Wilhelm; Wingfield, Brenda D.; Eckhardt, Lori G.; Wingfield, Michael J.; 0000-0002-3270-8199 (2021-03-22)

Grosmannia alacris is a fungus commonly associated with root‐infesting bark beetles occurring on Pinus spp. The fungus has been recorded in South Africa, the USA, France, Portugal and Spain and importantly, has been ...

Near Infrared Spectroscopy Calibration for Wood Chemistry: Which Chemometric Technique Is Best for Prediction and Interpretation?

Via, Brian K.; Zhou, Chengfeng; Acquah, Gifty E.; Jiang, Wei; Eckhardt, Lori G. (2019-08-02)

This paper addresses the precision in factor loadings during partial least squares (PLS) and principal components regression (PCR) of wood chemistry content from near infrared reflectance (NIR) spectra. The precision of ...

Rapid Quantitative Analysis of Forest Biomass Using Fourier Transform Infrared Spectroscopy and Partial Least Squares Regression

Acquah, Gifty E.; Via, Brian K.; Fasina, Oladiran O.; Eckhardt, Lori G.; 0000-0003-4269-0903; 0000-0003-2676-7376; 0000-0002-3270-8199 (2020-04-02)

Fourier transform infrared reflectance (FTIR) spectroscopy has been used to predict properties of forest logging residue, a very heterogeneous feedstock material. Properties studied included the chemical composition, thermal ...

Root-Inhabiting Bark Beetles (Coleoptera: Curculionidae) and their Fungal Associates Breeding in Dying Loblolly Pine in Alabama

Matusick, George; Menard, Roger D.; Zeng, Yuan; Eckhardt, Lori G.; Zeng, Yuan (2019-08-02)

Root feeding bark beetles in the family Curculionidae and the ophiostomatoid fungi they vector contribute to root disorders of Pinus species around the world. In the southeastern United States root feeding beetles in the ...

Screening Pinus taeda (loblolly pine) families for physical and mechanical properties using vibrational spectroscopy

Acquah, Gifty E.; Via, Brian K.; Eckhardt, Lori G.; 0000-0003-4269-0903 (2020-05-26)

In a bid to control the loblolly pine decline complex, stakeholders are using the selection and deployment of genetically superior families that are disease tolerant. It is vital that we do not compromise other important ...

Simulated Summer Rainfall Variability Effects on Loblolly Pine (Pinus taeda) Seedling Physiology and Susceptibility to Root-Infecting Ophiostomatoid Fungi

Chieppa, Jeff; Eckhardt, Lori G.; Chappelka, Arthur; 0000-0002-3270-8199; 0000-0001-9404-9638 (2020-04-01)

Seedlings from four families of loblolly pine (Pinus taeda L.) were grown in capped open-top chambers and exposed to three different weekly moisture regimes for 13 weeks. Moisture regimes varied in intensity and frequency ...

Wild Pigs: inciting factor in southern pine decline?

Eckhardt, Lori G.; Menard, Roger D.; Ditchkoff, Stephen S. (2021-03-22)

During an investigation into southern pine decline at Fort Benning Georgia, the possibility of wild pigs (Sus scrofa) as an inciting factor became evident. Their rooting activity caused significant root damage on sites ...