There has been increasing interest in promoting the seaweed Kappaphycus alvarezii as a co‐culture species in an integrated multitrophic aquaculture system. In recent work, we observed the capability of K. alvarezii to grow and remove carbon (C), nitrogen (N), and phosphorus (P) when planted in an intensive fish floating‐net cage system in Sekotong Bay, Lombok, Indonesia. Environmental factors that may influence seaweed bioremediation were investigated. After 42 days, there was a significant difference in the seaweed growth and bioremediation capability while cultivated within the fish cage system compared to the control site. Six kilogram of K. alvarezii incorporated inside the fish cages reduced the inorganic NH₄⁺ and PO₄³⁻ on average of 22.5–34% and 5–30%, respectively, from morning to afternoon and removed 131 g C g DW⁻¹, 4.6 g N g DW⁻¹, and 1.18 g P g DW⁻¹. The seaweed growth rate inside the fish cages was 3.33% d⁻¹ and higher than at the control site. Water motion was a limiting factor for growth and nutrient bioremediation inside the fish cage system. Our results provide evidence of the potential for K. alvarezii to grow in a fish aquaculture system and reduce the nutrient discharge from fish farms.

中文翻译：

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印度尼西亚龙目岛Sekotong湾鱼漂浮网箱系统中Kappaphycus alvarezii的潜在生长和营养去除

在综合多营养水产养殖系统中，将海藻Kappaphycus alvarezii作为共培养物种的兴趣日益浓厚。在最近的工作中，我们观察到K. alvarezii在印度尼西亚龙目岛Sekotong湾的密集鱼浮网笼系统中种植和去除碳（C），氮（N）和磷（P）的能力。研究了可能影响海藻生物修复的环境因素。42天后，与对照组相比，在鱼笼系统内养殖时，海藻的生长和生物修复能力存在显着差异。放入鱼笼中的六千克阿尔瓦雷克氏菌还原了无机NH ₄ ⁺和PO ₄ ^3-，平均分别为22.5-34％和5-30％，从上午到下午和除去131克C g还DW ^-1，4.6克N-克DW ^-1，和1.18克对克DW ^-1。鱼笼内的海藻生长率为3.33％d ^-1，高于对照地点。水分运动是鱼笼系统内部生长和营养生物修复的限制因素。我们的结果提供了证据，证明阿尔瓦雷克酵母在鱼类水产养殖系统中生长并减少养鱼场养分排放的潜力。