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首页> 外文期刊>Journal of oceanography >Primary productivity and solar radiation off Sanriku in May 1997
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Primary productivity and solar radiation off Sanriku in May 1997

机译:1997年5月,三陆附近的主要生产力和太阳辐射

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We measured the in situ primary production at four stations from the surface to 80 m off Sanriku in late May 1997. The depth-integrated daily primary production in the upper 80 m was estimated to be 391, 468, and 855 mgC m?2d?1 in water from the Oyashio, and 336 mgC m?2d?1 in the warm-core ring. The variation in the primary production was primarily due to the variation in phytoplankton activity (chlorophyll α-specific primary production). A combination of previous and present studies in water from the Oyashio and the warm-core ring suggested that phytoplankton activity is proportional to light intensity between 12 and 50 Ein m?2d?1 which is close to the usual light condition (61–75 Ein m?2d?1) off Sanriku in May and June. Light may be a limiting factor for phytoplankton off Sanriku in late spring and early summer.
机译:我们在1997年5月下旬测量了从地面到Sanriku到80 m以外的四个站点的原位初级生产。在上层80 m的深度综合日初级生产估计为391、468和855 mgC m?2d?在Oyashio的水中倒入1毫升,在暖芯环中倒入336 mgC m?2d?1。初级生产中的变化主要是由于浮游植物活性的变化(叶绿素α-特异性初级生产)。从Oyashio和暖芯环的水中进行的先前和现在的研究相结合,表明浮游植物的活动与光强度在12至50 Ein m?2d?1之间成正比,接近于通常的光照条件(61–75 Ein m?2d?1)在五月和六月在Sanriku离开。在春末夏初,光可能是三陆附近浮游植物的限制因素。

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