CAJ | 학술논문

通过室内实验研究了不同温度条件下主要水华藻类--鱼腥藻(Anabaena sp. strain PCC)和常见淡水藻类--普通小球藻(Chlorella vulgaris)的生长和种间竞争，结果表明在单种培养和共同培养体系中，普通小球藻的最大藻细胞浓度随着温度的升高而增加；鱼腥藻生长最适温度为30-35℃。温度对藻类种间竞争抑制参数能够产生明显影响，鱼腥藻在温度为15℃时对普通小球藻的竞争抑制参数最大，分别是25℃、30℃、35℃时的1.24倍、1.14倍和1.12倍；而普通小球藻在30℃时对鱼腥藻的竞争抑制参数最大，分别是15℃、25℃、35℃条件下的4.25倍、2.03倍和1.20倍。在4个试验温度下普通小球藻对鱼腥藻的竞争抑制参数均大于鱼腥藻对普通小球藻的竞争抑制参数。根据Lotka-Volterra竞争模型可推断，在4个温度条件下，普通小球藻和鱼腥藻在竞争中不稳定共存。
통과실내실험연구료불동온도조건하주요수화조류--어성조(Anabaena sp. strain PCC)화상견담수조류--보통소구조(Chlorella vulgaris)적생장화충간경쟁，결과표명재단충배양화공동배양체계중，보통소구조적최대조세포농도수착온도적승고이증가；어성조생장최괄온도위30-35℃。온도대조류충간경쟁억제삼수능구산생명현영향，어성조재온도위15℃시대보통소구조적경쟁억제삼수최대，분별시25℃、30℃、35℃시적1.24배、1.14배화1.12배；이보통소구조재30℃시대어성조적경쟁억제삼수최대，분별시15℃、25℃、35℃조건하적4.25배、2.03배화1.20배。재4개시험온도하보통소구조대어성조적경쟁억제삼수균대우어성조대보통소구조적경쟁억제삼수。근거Lotka-Volterra경쟁모형가추단，재4개온도조건하，보통소구조화어성조재경쟁중불은정공존。
Chlorella vulgaris is a common freshwater alga. Anabaena sp. strain PCC is one of the most common blue-green alga in eutrophic lakes. To better understand the growth of water bloom blue-green alga in eutrophic lakes and the relationship between alga growth and temperature, we investigate the interspecies competition between C. vul-garis and Anabaena sp. strain PCC at different temperatures. The results showed that in both uni-culture and co-culture systems, C. vulgaris and Anabaena sp. strain PCC reached the maximum growth rates at 35℃ and 30-35℃ respec-tively. We also found that the inhibition parameters of interspecies competition could be significantly influenced by the temperature. The maximum inhibition parameter of Anabaena sp. strain PCC against C. vulgaris, 0.9111, was observed at 15℃. This value was 1.24, 1.14, and 1.12 times higher than the parameters at 25, 30℃, and 35℃ respectively. The maximum inhibition parameter of C. vulgaris against Anabaena sp. strain PCC, 18.38, was observed at 30℃, which was 4.25, 2.03, and 1.20 times higher than those at 15℃, 25℃, and 35℃ respectively. According to the Lotka-Volterra model, we deducted that the coexistence of Anabaena sp. strain PCC and C. vulgaris was unstable in the co-culture system at these four temperatures.