EPIPELAGIC PLANKTONIC BIOLUMINESCENCE IN THE MARGINAL ICE-ZONE OF THE GREENLAND SEA
EPIPELAGIC PLANKTONIC BIOLUMINESCENCE IN THE MARGINAL ICE-ZONE OF THE GREENLAND SEA
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DOI：
10.1007/bf00349712
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发表时间：
1992-08-01
期刊：
影响因子：
2.4
通讯作者：
BUSKEY, EJ
中科院分区：
文献类型：
--
作者：
BUSKEY, EJ
1989年4月至5月，对弗拉姆海峡边缘冰区上层浮游生物发光进行了研究。使用HIDEX(高输入定义激发)设计的深度计测量了生物发光电位的垂直分布。采用斜拖网采集浮游动物样品，使用153亩网眼。利用积分球和光子计数系统测量了机械刺激单个生物体产生的生物发光量。这些生物发光潜力的测量以及生物发光生物的估计丰度允许独立地估计综合的表层生物发光潜力。该区域浮游动物群落结构相对简单，生物发光物种相对较少。大多数表层生物发光是由桡足类(Metridia spp.)、幼虫(Oikopleura，spp.)、真甲虫(Thysanoessa spp.)和介形类(Conchoecia spp.)，尽管在2个月的时间内，这些生物对总体生物发光潜力的相对贡献随着时间和位置的不同而变化很大。生物发光的甲藻很少见，对上层的生物发光没有显著贡献。水柱中的综合生物发光潜力与浮游动物生物量显著相关，但与任何其他测量的环境参数无关。在这次春季航行中，与邻近的弗拉姆海峡开放水域相比，边缘冰区的叶绿素、浮游动物生物量或生物发光没有增强。
Epipelagic planktonic bioluminescence in the marginal ice zone of the Fram Strait was investigated during April and May 1989. Vertical profiles of bioluminescence potential were measured using a HIDEX (High Input Defined EXcitation) design bathyphotometer. Mesozooplankton samples were collected with oblique tows using a 153-mu-m mesh net. The amount of bioluminescence produced by mechanical stimulation of individual organisms was measured using an integrating sphere and photon-counting system. These measures of bioluminescence potential along with estimated abundances of bioluminescent organisms allow an independent estimate of integrated epipelagic bioluminescence potential. The zooplankton community structure was relatively simple in this region and the number of bioluminescent species correspondingly small. The majority of epipelagic bioluminescence was produced by copepods (Metridia spp.), larvaceans (Oikopleura, spp.), euphausiids (Thysanoessa spp.) and ostracods (Conchoecia spp.), although the relative contribution of these organisms to the overall bioluminescence potential varied considerably with time and location over the 2 mo period. Bioluminescent dinoflagellates were rare and did not contribute significantly to epipelagic bioluminescence. Integrated bioluminescence potential in the water column was significantly correlated with zooplankton biomass, but not with any other measured environmental parameter. No enhancement of chlorophyll, zooplankton biomass or bioluminescence was observed in the marginal ice zone compared to the adjacent open waters of the Fram Strait during this spring cruise.