The effect of depth on summer growth of Laminaria saccharina (Phaeophyta, Laminariales)
The effect of depth on summer growth of Laminaria saccharina (Phaeophyta, Laminariales)
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深度对糖海带（褐藻门、海带目）夏季生长的影响
DOI：
10.2216/i0031-8884-18-4-405.1
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发表时间：
1979
期刊：
影响因子：
1.6
通讯作者：
G. Boden
中科院分区：
文献类型：
--
作者：
G. Boden
摘要将成熟的海带孢子体移植到平均低水位以下1~21m的7个深度，7月份叶片生长速度不同。−-1在9m处的最大伸长速率为1.15 cm/d，在1m和3m处移栽的伸长率约为0m处移栽植株伸长速率的40%，在17m以下生长明显减慢，表层低水平的硝酸盐和高温以及深层光照减弱是限制生长的因素。对研究区周围潮下带海带的定量调查表明，蔗糖藻的丰度和生物量在2~8m之间，以洋甘藻和龙须菜为主。
Abstract Mature Laminaria saccharina sporophytes transplanted to seven depths between 1 and 21 m below mean low water showed different rates of blade growth during July. A maximum rate of 1·15 cm day−1 occurred at 9 m. Elongation proceeded about 40% as rapidly in transplants at 1 and 3 m and in undisturbed plants on shore at 0 m. Growth was much reduced below 17 m. Low levels of nitrate and high temperatures near the surface and attenuated illumination at depth are suggested as limiting factors. A quantitative survey of subtidal kelp beds around the study site showed that L. saccharina dominates L. digitaca and Agarum cribrosum in abundance and biomass between 2 and 8 m.