ANOVA of kelp cover at (a) 15, 30 and 40 m at Abrolhos and Rottnest and (b) at 30 and 40 m at Abrolhos, Jurien and Rottnest in Western Australia.^#

# (a) Region is fixed with 2 levels (Ab, Abrolhos 28° S; Ro, Rottnest 32° S), Depth is fixed, orthogonal, with 3 levels (15, 30, 40 m). Grids is random, nested in Region and Depth, with 3 levels except for Ab at 40 m, with 2 levels. The replicates are the images (n = 100). (b) Region is fixed with 3 levels (Ab, Abrolhos 28° S; Ju, Jurien 30° S; Ro, Rottnest 32° S), Depth is fixed, orthogonal, with 2 levels (30, 40 m). Grids is random, nested in Region and Depth, with 3 levels, except for Ab at 40 m, with 2 levels. The replicates are the images (n = 100). ANOVA of kelp cover at (a) 15, 30 and 40 m at Abrolhos and Rottnest and (b) at 30 and 40 m at Abrolhos, Jurien and Rottnest in Western Australia.#(a) 区域（Region）为固定因子，包含2个水平：Ab（阿布罗尔霍斯群岛，28°S）、Ro（罗特内斯特岛，32°S）；水深（Depth）为固定正交因子，设置3个水平（15、30、40 m）。样方（Grids）为随机因子，嵌套于区域与水深之下，除阿布罗尔霍斯群岛40 m水深的样方仅设2个水平外，其余样方均设3个水平。实验重复单元为图像，样本量n=100。 (b) 区域（Region）为固定因子，包含3个水平：Ab（阿布罗尔霍斯群岛，28°S）、Ju（朱里恩湾，30°S）、Ro（罗特内斯特岛，32°S）；水深（Depth）为固定正交因子，设置2个水平（30、40 m）。样方（Grids）为随机因子，嵌套于区域与水深之下，除阿布罗尔霍斯群岛40 m水深的样方仅设2个水平外，其余样方均设3个水平。实验重复单元为图像，样本量n=100。 针对西澳大利亚海域的海带盖度（kelp cover），本研究开展如下方差分析（ANOVA）：(a) 阿布罗尔霍斯群岛与罗特内斯特岛海域15、30、40 m水深下的海带盖度；(b) 阿布罗尔霍斯群岛、朱里恩湾与罗特内斯特岛海域30、40 m水深下的海带盖度。