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Point Intercept Survey 2018 - 2025 <br />Carman Bay Lake Improvement District <br />Point Intercept Survey 2018 - 2025 <br />The District's objective is the control of Curlyleaf pondweed and Eurasian watermilfoil while employing best <br />practices to substantially protect the native plant community as measured by the end of season Aquatic Plant <br />Survey (point -intercept). The health of the native plant community can be evaluated by comparing the <br />observed point -intercept data in the aggregate to what would be expected if the community was undisturbed <br />by environmental change influenced by direct or indirect human activities such as an herbicide treatment or <br />other stressors. The quantitative measures clearly demonstrate a protected native plant community. <br />2025 2024 2023 2022 2021 2020 2019 2018 <br />Invasive Taxa. Frequency of occurrence, % <br />Eurasian watermilfoil, %. (Maintain below 20%) <br />7 <br />Curly -leaf pondweed, °la. (Maintain below 20%) <br />2 <br />Littoral Metrics of waters less than or equal to 15 feet deep <br />Modified Simpson's Diversity - A community <br />dominated by one or two species is considered to <br />be less diverse than one in which several <br />89 <br />different species have a similar abundance. <br />Zero is no diversity. <br />Floristic Quality Index, The FQI quantifies the <br />quality of a take's plant life. A higher FQI score <br />indicates a healthier, more diverse native plant <br />27 <br />community, while a lower score suggests a <br />greater presence of non-native, disturbance - <br />tolerant species. <br />AMCI Score. AMCI is designed to detect and <br />reflect changes in lake quality. A decline in the <br />60 <br />AMCI value indicates a deterioration of the <br />aquatic plant community. <br />Native Submerged Taxa <br />18 <br />Percent of Littoral Points Vegetated <br />93 <br />Mean Littoral Plant Height, feet <br />4.7 <br />Percent of Max Littoral Biovolume. Biovolume is <br />67 <br />plant canopy height divided by water depth <br />Mean Native Taxa f Point 2.7 <br />Saturday, September 20, 2025 <br />12 18 <br />12 <br />15 <br />11 <br />2 <br />26 <br />1 P <br />2 <br />P <br />4 <br />NIA <br />5 <br />89 89 <br />90 <br />89 <br />90 <br />88 <br />88 <br />25 28 25 29 26 26 28 <br />60 <br />54 <br />54 <br />53 <br />54 <br />53 <br />50 <br />18 <br />20 <br />17 <br />19 <br />18 <br />16 <br />18 <br />97 <br />98 <br />98 <br />100 <br />100 <br />99 <br />100 <br />4.4 <br />3.2 <br />3.0 <br />3.5 <br />2.6 <br />3.2 <br />3.1 <br />63 <br />59 <br />54 <br />67 <br />44 <br />50 <br />49 <br />2.7 <br />3.6 <br />3.5 <br />3.8 <br />3.5 <br />3A <br />3.4 <br />9-25-25 CBLID Annual Meeting Minutes DRAFT V.2 10-3-25 <br />91 <br />