- 公益財団法人 山階鳥類研究所
- 山階鳥類学雑誌 (ISSN:13485032)
- vol.49, no.2, pp.97-108, 2018-02-28 (Released:2019-02-28)
In 2017 we continued the Monitoring Avian Productivity and Survivorship (MAPS) program in Fukushima, Japan, using constant-effort mist netting and banding. Preliminary results from six years of data, including adult abundance index, productivity index, and apparent adult survival rate, were analyzed. Adult abundance of the Japanese Bush Warbler Cettia diphone in Fukushima City gradually increased from 2013 to 2017, while that in Minami-Soma City was relatively stable. In Iitate Village, adult abundance of this species fluctuated greatly, with a low in 2016. Adult abundance of the Oriental Reed Warbler Acrocephalus orientalis in Minami-Soma City was higher in 2015–2017 compared to 2012–2014, while that in Fukushima City was low in 2015 and 2016. Adult survival of the Oriental Reed Warbler from 2012–2013 to 2015–2016 in Minami-Soma City was 0.23–0.34 (Ave=0.27), while that in Fukushima City was 0.12–0.22 (Ave=0.16).