Nepper-Davidsen Jacob, Glasson Christopher R K, Lawton Rebecca J, Magnusson Marie
Coastal Marine Field Station, School of Science, University of Waikato, Tauranga, New Zealand.
Environmental Research Institute, The University of Waikato, Tauranga, New Zealand.
J Appl Phycol. 2023 Apr 28:1-14. doi: 10.1007/s10811-023-02969-2.
The biomass composition of kelp varies within species both spatially and temporally. However, this variation in biomass quality has not yet been investigated for the native kelp within New Zealand, where the kelp is a target for the emerging seaweed aquaculture industry. In this study we quantified spatial and temporal variation in the composition of biomass, collected from 12 sites around the North Island of New Zealand and from 12 months across a full year at a single site ( = 138). High spatial variation was detected for most components, including alginate (range: 16.6 - 22.7% DW, = 12), fucoidan (range: 1.2 - 1.6% DW, = 12), phlorotannins (range: 4.8 - 9.3% DW, = 72), and glucose (range: 9.3 - 22.6% DW, = 12). The biomass composition of varied significantly among sites but with no clear patterns among regions, indicating that geographic differences were mostly local rather than regional, possibly due to site-specific environmental conditions. Significant temporal variation (measured by positive autocorrelation between months) was detected in the content of lipids, proteins, glucose, guluronic acid, nitrogen, phosphorous, iodine, arsenic, and mercury, and for the mannuronic to guluronic acid (M:G) ratio. Overall, had comparable biomass composition to that of commercially grown northern hemisphere species but with substantially higher phlorotannin content. These results demonstrate that could be a viable southern hemisphere alternative for a broad range of commercial applications.
The online version contains supplementary material available at 10.1007/s10811-023-02969-2.
海带的生物量组成在物种内随空间和时间而变化。然而，对于新西兰本土海带，这种生物量质量的变化尚未得到研究，而海带是新兴海藻养殖业的目标。在本研究中，我们对从新西兰北岛周围12个地点以及在一个地点全年12个月收集的生物量组成的空间和时间变化进行了量化（n = 138）。检测到大多数成分存在高空间变化，包括藻酸盐（范围：16.6 - 22.7%干重，n = 12）、岩藻依聚糖（范围：1.2 - 1.6%干重，n = 12）、褐藻多酚（范围：4.8 - 9.3%干重，n = 72）和葡萄糖（范围：9.3 - 22.6%干重，n = 12）。[此处原文“ The biomass composition of varied significantly among sites”中“ of ”后缺少内容，推测可能是某种海带，假设为“this kelp”]这种海带的生物量组成在各地点之间有显著差异，但在各区域之间没有明显模式，表明地理差异大多是局部的而非区域性的，可能是由于特定地点的环境条件。在脂质、蛋白质、葡萄糖、古洛糖醛酸、氮、磷、碘、砷和汞的含量以及甘露糖醛酸与古洛糖醛酸（M:G）比值方面检测到显著的时间变化（通过月份之间的正自相关测量）。总体而言，[此处原文“ had comparable biomass composition to that of commercially grown northern hemisphere species”中“ had ”前缺少内容，推测可能是某种海带，假设为“this kelp”]这种海带的生物量组成与商业种植的北半球物种相当，但褐藻多酚含量显著更高。这些结果表明，[此处原文“ could be a viable southern hemisphere alternative for a broad range of commercial applications.”中“ could ”前缺少内容，推测可能是某种海带，假设为“this kelp”]这种海带对于广泛的商业应用可能是南半球可行的替代物。
在线版本包含可在10.1007/s10811 - 023 - 02969 - 2获取的补充材料。
