Aerial Survey as a Tool to Estimate Abundance and Describe Distribution of a Carcharhinid Species, the Lemon Shark, Negaprion brevirostris

Figure 4

(a) Mean lemon shark block abundance for all surveys conducted; (b) change in block lemon shark count per unit effort (UE) from high-tide to low-tide surveys. Dark grey blocks represent an increase in count per UE; light grey block represents a decrease in count per UE; patterned block represents no change in count per UE, 𝜒² significant ^∗𝑃<0.05, ^∗∗𝑃<0.01, ^∗∗∗𝑃<0.001.

(a)

(b)