Landscape-scale spatial heterogeneity in phytodetrital cover and megafauna biomass in the abyss links to modest topographic variation.

1B ) exhibited highly significant variation between depth bands, with the deepest band (representing the abyssal plain) significantly different from all shallower bands ( Table 1 , Supplementary Table 1 ), and the shallower depth bands (hill) having total POM cover 1.04–1.05 times higher than the plain ( Fig. 2A ).

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This shift in sediment type and mineralogy may be significant when considering the sediment inventory of organic carbon.

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