CAJ | 학술논문

为研究高 CO2及 UVR 对大型海藻耦合效应的影响，实验选择红藻门可进行钙化的叉节藻(Amphiroa sp.)与绿藻门不具钙化能力的刚毛藻(Cladophora sp.)进行对比，探讨了高 CO2与 UVR 对这两种藻生长及光化学效率的影响，并分析高CO2和UVR的耦合效应。结果表明， CO2浓度由360μmol/mol当前空气中CO2浓度)提高到1000μmol/mol培养73d后，叉节藻的生长下降了40.01%，而刚毛藻却增加了40.08%， UVR对叉节藻的光华学效率造成的抑制率增加了77.76%，对刚毛藻的抑制率增加了17.02%，这说明高CO2引起的海水酸化加剧了UVR对藻体的负面效应，且对具有钙化能力的叉节藻影响更显著。而叉节藻和刚毛藻之间的差异体现了藻体对海水酸化和UVR响应的种间特异性。
위연구고 CO2급 UVR 대대형해조우합효응적영향，실험선택홍조문가진행개화적차절조(Amphiroa sp.)여록조문불구개화능력적강모조(Cladophora sp.)진행대비，탐토료고 CO2여 UVR 대저량충조생장급광화학효솔적영향，병분석고CO2화UVR적우합효응。결과표명， CO2농도유360μmol/mol당전공기중CO2농도)제고도1000μmol/mol배양73d후，차절조적생장하강료40.01%，이강모조각증가료40.08%， UVR대차절조적광화학효솔조성적억제솔증가료77.76%，대강모조적억제솔증가료17.02%，저설명고CO2인기적해수산화가극료UVR대조체적부면효응，차대구유개화능력적차절조영향경현저。이차절조화강모조지간적차이체현료조체대해수산화화UVR향응적충간특이성。
Human behaviors contribute to global changes of enhanced solar ultraviolet radiation (UVR, 280-400 nm) and ocean acidification. Macroalgae plays an important role in global carbon cycle as primary producers;however, the effects of ocean acidification and UVR on macroalgae are uncertain. To investigate the combined effects of ocean acidi-fication and UVR on growth and photochemical efficiency, the calcified Amphiroa sp. and non-calcified Cladophora sp. were utilized in the present study. The results showed that increasing CO2 concentration from 360 ppmv (the current CO2 concentration in the air) to 1000 ppmv inhibited the growth of Amphiroa sp. by 40.01%, but stimulated the growth of Cladophora sp. by 40.08%. We also observed that UVR sensitivity was increased with acidification, and that acidifi-cation amplified the effects of elevated CO2 concentration in regulating the growth of algae. This suggested that ocean acidification may increase the negative effect of UVR to algae. These results indicated species-dependent effects of ocean acidification and UVR.