Fatty Acid Composition of Kelp on the West Coast of South Africa and Some Ecological Implications
Fatty Acid Composition of Kelp on the West Coast of South Africa and Some Ecological Implications
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DOI：
10.1515/botm.1979.22.4.237
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
B. Velimirov
中科院分区：
文献类型：
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作者：
B. Velimirov
由于有关褐藻类脂质含量的信息很少，因此进行了这项初步研究，以确定南非西海岸附近发现的 3 个主要海带物种（即海带、Ecklonia maxima znaMacrocystis angustifolia）的脂质含量、脂质类别和脂肪酸模式。海带的脂质含量较低，为鲜重的 0.4% 至 0.7%。确定了脂肪酸模式，从而能够量化海带植物对海带床附近常见的表面浮油和海泡沫的贡献。对海带和岩藻科褐藻中的脂肪酸模式进行了比较。利用先前研究的未收作物和生产力数据，海带和昆布叶的脂肪产量是根据垂直于海岸并从海岸线延伸到海带床末端的 499 × l m 横断面确定的。经计算，瞬时站立脂肪量约为 19.5 千克。 2 月至 5 月期间，每天释放的总脂肪估计为 109.09 克或 0.22 克脂肪“m^-天”。
As little information about the lipid content of Phaeophycea is available, this preliminary study was carried out to determine lipid content, lipid classes and fatty acid patterns in 3 major kelp species, namely Laminaria pallida, Ecklonia maxima znaMacrocystis angustifolia, found off the west coast of South Africa. The lipid content of kelp was found to be low, ranging from 0.4% to 0.7% fresh weight. Fatty acid patterns were determined, thus enabling the contribution of the kelp plants to surface slicks and sea foams commonly found in the vicinity of kelp beds to be quantified. Comparisons of the fatty acid patterns in the kelps and the brown algae of the family Fucoidea were made. Using standing crop and productivity data of previous studies, the production of fat by fronds of Laminaria and Ecklonia was determined from a 499 χ l m transect running normal to the coast and extending from the shoreline to the end of the kelp bed. Instantaneous standing crop of fat was calculated to be in the region of 19.5 kg. Total fat released per day was estimated as 109.09 g or 0.22 g fat m^-day" in the period February to May.