강화 남단 조간대 상부 영국 갯끈풀(Spartina anglica) 번성으로 인한 대형저서생물 군집 영향 해석

Abstract

A alien halophyte, cordgrass(Spartina anglica), which have been flourished a part of southern coast of Kanghwa Island have been issued on affect to benthic communities on tidal flats. From 2017 to 2018,Quantitatively sampling carried on three types of habitats such as cordgrass, native halophyte (Suaeda Japonica) and bare tidal flats, located in same tidal levels on 65m and 115m depart from coastal lines, respectively. 0.1 m2 of sediment sampled using by can corer and sieved to sort macro-benthos, especially, severely entangled roots separated detail to pick up animals. A total of 29 species identified. Species composition such as number of species, density showed similar variation comparing on at each habitat, but in some of crab have differentiated considering to tidal level and habitats. Community structure have been specialized to two type of groups by tidal level and habitats. One group composed to bare tidal flat and native halophyte habitats located in lower tidal level, and cordgrass habitats located in lower tidal level showed high relation with upper tidal level station.