During FY2021, Horikawa River Development Activity Record (1st to 4th)

・Based on the results of the fireflies' habitat (Children's Nature Park) conducted in June, a field survey of Naka Horikawa (near Shirane Fudoson) was conducted.
・While checking the conditions of seawalls and riverbeds, Cody Nae
　Turkey explained to the project participants.
・After the on-site confirmation, in order to resolve these issues, we decided to implement a small-scale nature restoration activity next time.

・This time, teachers from nearby elementary schools also participated and talked about "cooperation activities with nearby elementary schools" and "nature maintenance methods that can be implemented in Naka-Horikawa".
　I did it.
・Regarding collaborative activities with nearby elementary schools, teachers will talk about activities that they would like to carry out as environmental learning, and this project.
　We talked about how we can get involved and what we can do.
・Regarding the nature maintenance methods that can be implemented in Naka-Horikawa, there are places where the environmental conditions for fireflies habitat have already been set, so such parcels are expanded.
　We decided to proceed with the project in this direction.

Observation of firefly habitat

・In fact, at the Children's Nature Park, where Genji fireflies and Heike fireflies inhabit.
　We had a visit.
・While looking at the site, "Differences in habitats of Genji fireflies and Heike fireflies" and "in the park
　Similarities and differences between fireflies habitats and Naka Horikawa's environment.
　Thank you very much for your comment.
・Naka Horikawa is also home to valuable creatures such as Hotokedo Loach and Japanese Freshwater Crab. So
　For this reason, we have created an environment where not only fireflies but also those creatures can easily live.
　There was an opinion that going could be a goal for the activity.
・Next time, we will talk about nature maintenance methods that can be implemented in Naka Horikawa.

・As a result of discussions on this project name, it became "Operation Team for the Future of Naka Horikawa".
・The coordinator (aquatic organism experts) who will be newly participating this time, will discuss the firefly life cycle of fireflies and the middle
　He explained the possibility of fireflies inhabiting in Horikawa.
・Regarding the water quality and water temperature of Naka Horikawa (the area near Shirane Fudoson), it was said that no problems were found in this season. However, firefly spawning grounds
　It seems that there are few places and hatching, so it may be necessary to create a new place.
・Next time, we will observe the environment of the Children's Nature Park, where Genji fireflies actually live, and investigate the differences from Naka Horikawa's environment.

Kawanina, which is the food of fireflies

・An environmental survey was conducted to understand the current situation of Naka Horikawa and issues.
・A survey of the section near Shirane Fudoson revealed that the water quality was good, and small crabs and fireflies
　Kawanina, which feeds on, also inhabited.
・Next time, we will share the information obtained from the survey and how we will develop river-building activities in the future.
　Let's talk about it.