Characteristics of Macroinvertebrates Food Webs affected by Dry Channel in an Intermittent Stream System of the Echi River in Japan

• Published in: Journal of Climate Change Research Vol. 6; no. 3; pp. 167 - 173
• Main Authors: Shin, Hyun-Seon, Amahashi Nozomi, Na, Young-Eun, Park, Hong-Hyun, Cho, Kwang-Jin, Seo, Ye-Ji, Mitamura Osamu
• Format: Journal Article
• Language: English
• Published: 한국기후변화학회 30.09.2015
• Subjects: 학제간연구; Trophic Pathway; Functional Feeding Groups; Potential Food Sources
• ISSN: 2093-5919; 2586-2782
• DOI: 10.15531/ksccr.2015.6.3.167

The purpose of study is to identify trophic pathways from organic matter to macroinvertebrates in terms of the consumer and to characterize the food webs in an intermittent stream system of the Echi River in Japan. The δ13C values of macroinvertebrates and their potential food sources indicated the scraper (Psephenoides spp., Ecdyonurus levis) and collector-gatherer (Ephemera strigata, Paraleptonphlebia chocolata) feed on periphyton and POM (particulate organic matter) in situ. Davidius lunatus, and Hexatoma spp., which were identified as predators, may feed upon Ephemera strigata and Stenelmis larvae, respectively. At station characterized by seepage water, the δ15N values of Ecdyonurus levis, Lymnaea auricularia, and Rhyacophila nigrocephala larva probably showed relatively lower values according to its diets. Even in homogenous species, the trophic pathways of macroinvertebrates in situ exhibited considerable variation; this reflected the trophic pathways from organic matter to the consumer depending on habitat characteristics in stream. KCI Citation Count: 0