5:15 PM - 6:30 PM
[HTT21-P12] The apterous winter stonefly fauna and its feeding on seasonal snowfields in Japan
- Analysis of the food web using C and N Stable Isotope –
Keywords:stonefly, food web, stable isotope
The stonefly specimens were collected on the snow surface at five sites in Japan during 2015. The study sites included snow fields in Shinjo in Yamagata (altitude: 150 m), in Ushitakeonsen in Toyama (490 m), in Uonumakyuryo in Niigata (210 m), in Mt. Gassan (1300m altitude), in Tateyama Mountains (2300 m). Furthermore, other specimens including springtails, spiders, leaves, snow algae and particulate organic matter in snow were collected. The stable isotopes showed that potential food sources of apterous winter stoneflies are springtails, aphids, small spiders, snow algae, particularly dead leaves.