Impact of Forest Fires Scars on the Spread of Noxious and Invasive Weeds in the Tonto National Forest: A Comprehensive Snapshot Ecosystem Stress Analysis

Overview

Over the past year, there were more than 61,000 wildfires in the US, which is about ninety percent above the 20 -year average. Its resulting aftermath has given an opportunity for noxious and invasive weeds to flourish, posing a threat to the ecosystem. To address this problem, this study investigated the impact of forest fire scars on the spread of noxious and invasive weeds in the Tonto National Forest. This project was conducted using the following methods: First, a 30ft x 30ft plot was established in each site using GPS coordinates, which was divided into four quadrants (15ft x 15ft) for even sampling. Second, all plant species were recorded, paying close attention to the invasive species, estimating their percentage cover, density, and spread. Third, soil samples were collected to analyze texture, moisture, and pH. Fourth, notes were taken on the visible impacts of fire, including erosion, soil loss, an d vegetation damage for the Bush and Cactus Fire scars. Lastly, GIS, Correlation Analysis, Regression Analysis, and Spatial Analysis were conducted to analyze the data. The results showed that red brome has a high risk (56.7%) of spreading, meaning it should be the highest priority for some kind of control. While stinknet and buffelgrass has moderate risk which might require more targeted management approaches. This demon strates that when a plant is invasive, there’s a 63.3% chance that these plants will successfully move to new areas. This research presents a further elaboration regarding the relation forest fires scars in the spread of invasive weeds.

Competition history

• JSHS 2025 Category not listed

Resources

• National JSHS abstract book ↗

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