In the last decades, there has been an increase of macroalgal species appearing in new geographic regions. These new records are being linked to non-intentional global human-mediated transport. In Iceland three macroalgae species have been reported as non-indigenous. We updated the number of non-indigenous macroalgae to 8 species, 4 of which are potentially invasive. Pathways and vectors of each macroalga introduction are identified. The red algae group does not stand out in Iceland as in the nearest territories. The number of non-indigenous macroalgae will probably increase in the near future due to (1) secondary spread of species via shipping vector; (2) the growing trend of aquaculture in Norway, where surface currents will probably allow the spread of algae to Iceland; and (3) the increase of studies focusing on this matter. To address the problem, we suggest that local monitoring and mitigation programmes should be implemented across Iceland, and that regulatory and preventive measures for the maritime traffic vector should be developed.

在过去的几十年里，新的地理区域出现了大量的大型藻类物种。这些新记录与非故意的全球人类中介运输有关。在冰岛，三种大型藻类已被报告为非本土的。我们将非本土大型藻类的数量更新为 8 种，其中 4 种具有潜在入侵性。确定了每个大型藻类引入的途径和载体。红藻群在冰岛不像在最近的地区那样突出。由于（1）物种通过运输媒介的二次传播；(2) 挪威水产养殖的增长趋势，那里的地表水流可能会允许藻类扩散到冰岛；(3) 增加了针对这一问题的研究。