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Restoring the Longleaf Pine (<I>Pinus Palustris</I>) Forests Using Pineywoods Cattle Grazing in Conjunction With

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Restoring the Longleaf Pine (<I>Pinus Palustris</I>) Forests Using Pineywoods Cattle Grazing in Conjunction With The University of Southern Mississippi The Aquila Digital Community Honors Theses Honors College Spring 5-2014 Restoring the Longleaf Pine (Pinus palustris) Forests Using Pineywoods Cattle Grazing in Conjunction with Prescribed Burning L. Tyler Albin University of Southern Mississippi Follow this and additional works at: https://aquila.usm.edu/honors_theses Part of the Agricultural Science Commons Recommended Citation Albin, L. Tyler, "Restoring the Longleaf Pine (Pinus palustris) Forests Using Pineywoods Cattle Grazing in Conjunction with Prescribed Burning" (2014). Honors Theses. 257. https://aquila.usm.edu/honors_theses/257 This Honors College Thesis is brought to you for free and open access by the Honors College at The Aquila Digital Community. It has been accepted for inclusion in Honors Theses by an authorized administrator of The Aquila Digital Community. For more information, please contact [email protected]. The University of Southern Mississippi Restoring the Longleaf Pine (Pinus palustris) Forests Using Pineywoods Cattle Grazing in Conjunction with Prescribed Burning by L. Tyler Albin A Thesis Submitted to the Honors College of The University of Southern Mississippi in Partial Fulfillment of the Requirements for the Degree of Bachelor of Science in the Department of Biological Sciences May 2014 ii Approved by Micheal Davis, Ph.D., Thesis Advisor Professor of Biological Sciences Shiao Wang, Ph.D., Interim Chair Department of Biological Sciences David R. Davies, Ph.D., Dean Honors College iii Abstract The longleaf pine (Pinus palustris) is major forest constituent of the Southern Coastal Plains of the United States. Ecologically, a virgin longleaf pine forests supports increased species richness. Since the 1800s, longleaf pine forests have been exploited as a massive source of commercial products (e.g., lumber, pulp, and naval stores). A decrease in species richness has been recorded following this vast decrease in longleaf pine presence. Rebuilding the longleaf pine ecosystem is essential for restoring species richness and maintaining the ecological health of many Costal Plains habitats. Presently, the most popular restoration and management method utilized is prescribed burning. Prescribed burnings allow small, controlled fires to safely mimic the effects of naturally occurring wildfires. More recently, interest in the use of prescribed burning in the longleaf pine forests has increased because of the potential applications for reducing forests floor fuel loads and increasing species richness. A lesser-known practice of restoration is the implementation of grazing by cattle populations. Previous studies have shown an increase in species richness and a decrease in litter-cover when sites were introduced to grazing. Little research studying the interactions between grazing and prescribed burning has been conducted, however. We studied the effects of prescribed burns and grazing at the Longleaf Preserve, located in the Lake Thoreau Environmental Research Center (LTEC) in Hattiesburg, Mississippi. A series of treatment sites were constructed to determine the influence of grazing by pineywoods cattle and prescribed burns on plant diversity and physiognomy of the forest floor. These sites were subjected to four different treatments in an attempt to replicate current environmental conditions. iv Fuel loads (i.e., available material for burning) were assessed by collecting data on fine and course litter (e.g., fallen leaves, twigs, branches), as well as, understory plant species richness. The litter samples were collected, dried, and placed on a scale to determine weight. The plant species within each sample were then separated based on morphology. The preliminary results indicate that combining pineywoods cattle grazing with a prescribed burning regimen is an effective means of decreasing leaf-litter cover and increasing species richness on the forest floor. Key Words: longleaf pine, Pinus palutris, species richness, restoration, management, prescribed burning, grazing, litter-cover, pineywoods cattle, fuel loads v Dedication To Lance, Ida, & Ryan Albin Thank you for your unwavering love and compassion. You are fundamental to my success. vi Acknowledgements I would like to thank my thesis advisor, Dr. Micheal Davis, for his tireless efforts in mentoring me during the process of completing this study. I would like to thank Knox Flowers, Jaybus Price and Brandy Purdy for their unending patience and understanding in teaching a novice undergraduate how to truly appreciate the forests. Additionally, I would also like to pay special thanks to the men of Delta Tau Delta International Fraternity – Zeta Chi Chapter. Through your guidance and assistance, I was able to become not only a successful student, but also a successful member of society. vii Table of Contents List of Tables ..................................................................................................................... ix List of Illustrations .................................................................................................. x Chapter 1: Introduction ........................................................................................................1 Chapter 2: Review of Related Literature .............................................................................5 History of the Longleaf Pine ..................................................................................5 Importance of the Longleaf Pine ............................................................................5 Restoration of the Longleaf Pine ............................................................................7 Prescribed Burning .................................................................................................8 Pineywoods Cattle ................................................................................................10 Chapter 3: Methodology ....................................................................................................15 Overview ..............................................................................................................15 Selection of Treatment Sites .................................................................................15 Establishing the Permanent Sampling Points Within Each Treatment ................17 Specifications of Each Treatment .........................................................................19 Collecting the Litter Samples ...............................................................................22 Removing Insects from the Samples ....................................................................23 Removing Residual Moisture from the Samples ..................................................25 Weighing the Samples ..........................................................................................26 Categorizing the Samples .....................................................................................26 Weighing the Categorized Samples .....................................................................28 Chapter 4: Results ..............................................................................................................29 viii Litter Dry Weight .................................................................................................29 Species Richness ..................................................................................................33 Chapter 5: Discussion ........................................................................................................37 Research Questions and Hypothesis .....................................................................37 Litter Dry Weight .................................................................................................37 Species Richness ..................................................................................................40 Limitations and Directions for Future Research ..................................................41 Chapter 6: Conclusion........................................................................................................44 References ..........................................................................................................................46 ix List of Tables Table I: Reference of Permanent Testing Points ...............................................................18 Table II: Litter Weight, Pre-Cattle, April 2012 .................................................................31 Table III: Least Means Square, Litter Weight, Pre-Cattle, April 2012 ..............................31 Table IV: Litter Weight, Post-Cattle, April 2014 ..............................................................33 Table V: Least Means Square, Litter Weight, Post-Cattle, April 2014 .............................34 Table VI: Species Richness, Post-Cattle, April 2014 ........................................................35 Table VII: Least Means Square, Species Richness, Post-Cattle, April 2014 ....................36 x List of Illustrations Illustration I: Prescribed Burning Consuming Understory Vegetation ..............................10 Illustration II: Pineywoods Cattle Roaming Through the Longleaf Pine Forests ..............13 Illustration III: Historical, Grassland Forest Floor ............................................................14 Illustration IV: Current, Crowded Forest Floor .................................................................14 Illustration V: Dendrology Sampling Grid
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