Utilizing Machine Counting to Track Mangrove Expansion in Coastal Hernando County, Florida
Extension Education
J. Strickland
Extension Agent IV
UF/IFAS
Kissimmee
Abstract
Situation:
Hernando County’s coastal landscape is undergoing a shift from salt marsh to mangrove-dominated ecosystems. Over the past 15 years, significant expansion of red mangroves (Rhizophora mangle) and black mangroves (Avicennia germinans) suggests ongoing ecological and climatic changes. Understanding and quantifying this expansion is critical for evaluating habitat transitions, coastal resilience, and environmental conservation strategies.
Methods:
This study utilized a SenseFly eBeeX drone to conduct aerial surveys across a 27.3-hectare marsh between Bayport and Alfred McKethan Pine Island. RGB imagery was processed into an orthomosaic and analyzed with ImageJ software, applying a color threshold to isolate mangrove coverage. Surveys were conducted in December 2022, 2023, and 2024 to measure year-over-year expansion.
Results:
Over a three-year period, mangrove coverage expanded by 60.84%, highlighting a rapid ecosystem transformation. Machine counting provided a more objective and quantifiable alternative to traditional visual estimates, ensuring accurate tracking of mangrove encroachment into salt marsh areas.
Conclusion:
This study demonstrates the effectiveness of machine counting and drone-based monitoring in tracking coastal vegetation changes. By establishing a baseline for mangrove expansion, these methods support long-term ecological monitoring and climate adaptation planning. The findings emphasize the value of remote sensing and AI-driven image analysis in conservation efforts, land management policies, and climate resilience studies. Future research should explore the broader implications of mangrove expansion on local biodiversity, hydrology, and carbon sequestration.
Poster has NOT been presented at any previous NACAA AM/PIC
This poster is being submitted for judging. It will be displayed at the AM/PIC if not selected as a State winner. The abstract will be published in the proceedings.
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Authors: J. Stacy Strickland, Brittany Scharf
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Strickland, J. Extension Agent IV, UF/IFAS, Florida, 34744
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Scharf, B. County Extension Director, UF/IFAS, Florida, 34601