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BSP, a Threatened Tidal Freshwater Wetland Plant W&M ScholarWorks Dissertations, Theses, and Masters Projects Theses, Dissertations, & Master Projects 2002 Use of Remote Sensing to Identify Essential Habitat for Aeschynomene virginica (L) BSP, a Threatened Tidal Freshwater Wetland Plant Elizabeth M. Mountz College of William and Mary - Virginia Institute of Marine Science Follow this and additional works at: https://scholarworks.wm.edu/etd Part of the Fresh Water Studies Commons, Remote Sensing Commons, and the Water Resource Management Commons Recommended Citation Mountz, Elizabeth M., "Use of Remote Sensing to Identify Essential Habitat for Aeschynomene virginica (L) BSP, a Threatened Tidal Freshwater Wetland Plant" (2002). Dissertations, Theses, and Masters Projects. Paper 1539617789. https://dx.doi.org/doi:10.25773/v5-h0q0-gj46 This Thesis is brought to you for free and open access by the Theses, Dissertations, & Master Projects at W&M ScholarWorks. It has been accepted for inclusion in Dissertations, Theses, and Masters Projects by an authorized administrator of W&M ScholarWorks. For more information, please contact [email protected]. USE OF REMOTE SENSING TO IDENTIFY ESSENTIAL HABITAT FOR AESCHYNOMENE VIRGINICA (L.) BSP, A THREATENED TIDAL FRESHWATER WETLAND PLANT. A Thesis Presented to The Faculty of the School of Marine Science The College of William and Mary in Virginia In Partial Fulfillment Of the Requirements for the Degree of Master of Science By Elizabeth Mountz 2002 APPROVAL SHEET This thesis is submitted in partial fulfillment of the requirements for the degree of Master of Science Elizabeth M. Mountz Approved, August 2002 James E. Perry, Ph.D. Committee Chairman/ Co-advisor Gene M. Silbemom, Ph.D. Co-advisor John E. Anderson, Ph.D. Martha A. Case, Ph.D. Table of Contents TABLE OF CONTENTS ......................................................................................................iii ACKNOWLEDGEMENTS................................................................................................. vi LIST OF TABLES...................................................................................................................vii LIST OF FIGURES .....................................................................................................ix ABSTRACT ................................................................. xvi IN T R O D U C T IO N ........................................................................................ 2 LITERATURE REVIEW ........................................................................................................6 TIDAL FRESHWATER WETLANDS.....................................................................................6 AESCHYNOMENE VIRGINICA.............................................................................................. 10 REMOTE SENSING.................................................................................................................14 METHODS...................................................... 22 SITE DESCRIPTION.............................................................................................................. 22 VEGETATIVE HABITAT DATA COLLECTION.............................................................24 Sampling plot location......................................................................................................... 24 Vegetative cover sampling ............................................................................. 26 Vegetative statistical analysis...............................................................................................27 REMOTE SENSING DATA COLLECTION AND ANALYSIS........................................29 Imagery and Radiometric Correction ............................................................ 29 DMS V Image Processing and Data Analysis ...................................................................29 LANDS AT TM Data analysis ............................................... 35 RESULTS ...................................................................................................................................39 VEGETATIVE HABITAT PARAMETERS.................................................................................39 DMSV CLASSIFICATION................................................................................................................41 LANDS AT CLASSIFICATION........................................................................................................44 DISCUSSION......................................................................................................... 45 VEGETATIVE FACTORS.................................................................................................................. 45 PREDATION AND OTHER ANIMAL INTERACTIONS....................................................... 48 REMOTE SENSING..............................................................................................................................49 IMPLICATIONS FOR RESOURCE MANAGEMENT............................................................. 57 RECOMMENDATIONS FOR FUTURE STUDY............................................ 58 CONCLUSIONS.................................................................................................... 60 APPENDIX A. DMSV Georectification data................................................... 123 LITERATURE CITED......................................................................................... 124 VITA.......................................................................................................................133 IV ACKNOWLEDGEMENTS I would like to thank my advisors - Dr. Jim Perry and Dr. Gene Silberhom - and committee members Dr. Martha Case and Dr. John Anderson, for their ideas, support, and assistance on this study. Also, I would like to thank Dr. Carl Hershner for providing assistantship support. My never ending gratitude to all of those who trecked out with me to share the beauty of the marshes (and the mud): Rebecca Arenson, Helen Woods, Mindy Gensler, Holly Grubbs, Wendy Midgal, Renata Steinert, Jim Perry, Gene Silberhorn, Alayde Barbosa, Anne Newsom, Nikki Kelsey, Courtney Graves, Kristin Maki, Helen Woods, Jen Wu, Mom and Dad, and Sharon Miller. I had a great time, and I hope that you all did too. Also to Katie Farnsworth, who cheerfully welcomed me into her house when I needed a place to stay at VIMS and to Rebecca, who put up with me the rest of the time — I can’t express how much I’ve appreciated your support and encouragement (and cooking) the past year and a half. Much thanks to the Coastal Inventory staff — especially Harry Berquist - for sharing data, allowing me to borrow equipment and remaining patient (cheerful even) through my never-ending stream of questions. To Cliff Fischer, Trish Gurley, Sharon Miller, Susan Rawlins and the rest of the vessels group, for never leaving me stranded, without a boat and truck, and to Agnes Lewis for organizing the funding to pay for this Also, to Sue Presson, for her seemingly unending supply of patience with my numerous questions and extension requests. This project would not have been possible without the funding support of the Virginia Institute of Marine Science Minor Student Research Grant and Mini-Grant, the U.S. Fish and Wildlife Service Student Research Grant, and the Virginia Space Grant Student Fellowship. Most of all, I want to thank my parents for their love and support. v LIST OF TABLES Table 1. Dates of each DMSV flight and summary of associated vegetative cover sampling effort for each of the Mattaponi River study sites during the summer and autumn sampling periods. N/A indicates that no vegetative data was collected at a site during that sampling period .........62 Table 2. Modified Daubenmire cover class and range midpoint ............................................................... 63 Table 3. The ten highest ranked macrophyte species (ranking calculated by mean importance value) at each of the Mattaponi River study sites during the summer sampling period .......................64 Table 4. The ten highest ranked macrophyte species (ranking calculated by mean importance value) at each of the Mattaponi River study sites during the autumn sampling period ............................65 Table 5. Ranking by mean importance value of macrophytes at the Garnett’s Creek - Upper 4Aeschynomene' berm study site (GCU-A) during the summer 2000 sampling period ............. 66 Table 6. Ranking by mean importance value of macrophytes at the Garnett’s Creek - Lower ‘Aeschynomene’ berm study site (GCL-A) during the summer 2000 sampling period...............67 Table 7. Ranking by mean importance value of macrophytes at the Upper Gum 1 Aeschynomene' berm study site (UG-A) during the summer 2000 sampling period ................................................. 68 Table 8. Ranking by mean importance value of macrophytes at the Melrose Landing ‘Aeschynomene ’ berm study site (ML-A) during the summer 2000 sampling period ............. 69 Table 9. Ranking by mean importance value of macrophytes at the Garnett’s Creek - Upper ‘Aeschynomene’ berm study site (GCU-A) during the autumn 2000 sampling period .............. 70 Table 10. Ranking by mean importance value of macrophytes at the Garnett’s Creek - Upper ‘Comparison’ berm study site (GCU-C) during the autumn 2000 sampling period .................. 71 Table 11. Ranking by mean importance value of macrophytes at the Garnett’s Creek - Lower ‘Aeschynomene’ berm study site (GCL-A) during the autumn 2000 sampling period
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