UV radiation effects on pigments, photosynthetic efficiency and DNA of an Antarctic marine benthic diatom community

[摘要] ABSTRACT: The impact of ultraviolet radiation (UVR) on a semi-natural, soft-bottom diatom community from Potter Cove, King Georg Island, Antarctica, was investigated. The objective was to estimate the impact of UV-B (280 to 320 nm) and UV-A (320 to 400 nm) on photosynthetic efficiency, pigments, DNA damage and repair. The diatom community was exposed to different doses of radiation treatments: PAR + UV-A + UV-B (PAB), PAR + UV-A (PA) and PAR (P). The most frequently observed species were

[学科分类] 生物科学（综合）

[关键词] Benthic diatoms;UV radiation;UV-B radiation;Xanthophyll pigments;Fv/Fm;DNA damage;Microphytobenthos;P–E curve