Data adapted from Zaneveld et al 2016. Nature Communications Licensed under CC B
Which of the following claims about how the loss of herbivorous fish affects corals at different levels of nutrient enrichthent is best
supported by the data above?
A. By increasing algal cover, the loss of herbivorous fish leads to the replacement of all symbiotic bacteria in coral
microbiomes with pathogenic bacteria, which increases the coral mortality rate to an average of 33%.
OB. By decreasing the frequency of predation, the loss of herbivorous fish reduces algal cover to approximately 30% and
promotes the growth of Synechococcales as the dominant species in coral microbiomes.
OC. By increasing algal cover, the loss of herbivorous fish pushes the composition of coral microbiomes towards pathogen-
dominated states and promotes an average tissue loss of 47.5%.
OD. By decreasing the frequency of predation, the loss of herbivorous fish improves the growth rate of corals by 45% each
year and reduces the mortality rate to 4%.
11 of 20 Answered
Reset
Submit
Session Timer: 39:37
Session Score: 45 % (5/11)