Advanced analysis of submerged plant growing in Akanoi Bay of Lake Biwa, Japan by infrared continuous monitoring

A growing process of submerged plants has been continuously observed by an infrared camera from the top of a building on the coast of Akanoi Bay, Lake Biwa, Japan. The warmer region on the display of the infrared camera shows the plant-growing area where the plants grow up to the water surface. A quantitative presentation, the ratio of the plant-covered area to the restricted observational region, appears a seasonal variation of its growth and a difference of the variation between in 2002 and 2003.