제주도 물장오리의 식물플랑크톤의 군집 동태

Abstract

Wetlands environmentally conduct various function by control and maintainability of an underground water level, inhibitive action of flooding, supply of water, protection of river water quality, and aesthetic appreciation of the surrounding water. Divers animals and plants inhabit in wetlands, and greatly preserves the ecosystem.

The purpose of this study was to investigate the seasonal and spatial distribution of species, variation of dominant species of phytoplankton and wrrelation with environmental factors in Muljangori wetlands of Jeju-do in June, Aug. and Oct. 2011.

A total of 29 species, belong to 5 classes and 24 genera of phytoplankton, were identified during the study period. Highest number of phytoplankton with 28 species of phytoplankton occurred in June, following 21 species in Aug. and 9 species in Oct.

21 species of Chlorophycea occurred with highest number, following 7 species. of Bacillariophyceae and Cyanophyceae, 2 species of Euglenophyceae and 1 species of Dinophyceae.

Phytoplankton abundance was in the range of 19,217 - 374,640 cells?EL-1. The average abundance of 225,432 cells?EL-1 was highest in Aug. and lowest 115,196 cells?EL-1 in Jun.

Cyanophyceae was most abundant in during the study period. The dominant species were Microcystis aeruginosa of Cyanophyceae and Actinotaenium sp. of Chlorophycea.

The species diversity was highest in June, but the abundance low. The species diversity and abundance showed high in Aug. The species diversity was lowest in Oct., the abundance in Oct. higher than in June. Microcystis aeruginosa of Cyanophyceae and Actinotaenium sp. of Chlorophycea were major taxa in Aug. and Oct.