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The growth of water hyacinth in the waters of Lake Tondano can affect the lake's ecosystem due to its rapid growth and spread. Water hyacinth is a weed that damages the aquatic environment which, if its growth and development are not controlled, will reduce the amount of light entering the waters, evapotranspiration, and reduce the amount of water and can accelerate the process of silting the waters of Lake Tondano. The research objective was to determine the distribution pattern of water hyacinth in Lake Tondano from 2015 to 2020. The research method was descriptive qualitative and spatially analyzed data using geographic information systems. The data used are primary and secondary data, obtained through observation and field surveys and documentation. Based on the results of spatial analysis, it is known that the distribution pattern of water hyacinth in Lake Tondano has increased from 2015 with an area of 465.59 Ha, in 2016 the area was 848 Ha, in 2017 the area was 999,695 and there was a change in area decline, in 2018 the area was 675.87 Ha, and 2019 the area was 366.36 Ha. , and in 2020 the area of water hyacinth will increase to 995,797 hectares. The factors causing the uncontrolled distribution of water hyacinth in the waters of Lake Tondano can be due to the season (climate), sedimentation, or land use. The growth and development of water hyacinths have disrupted various community activities and have an impact on the process of silting the waters of the lake and damaging the beauty of Lake Tondano.

Sebaran Spasial Eceng Gondok (Echornia Crassipes) di Danau Tondano