In New Zealand the plant has spread rapidly, changing mudflats with marshy fringes to extensive salt meadows and reducing the number and kinds of birds and animals that use the marsh.

在新西兰，这种植物传播地很快，它将沼泽地的边缘变成了广阔的盐土草地，并且使利用那片沼泽（生存）的鸟类和动物的数量和种类下降。