The provided bar graph illustrates the fluctuations in the populations of seals, whales, and dolphins in the Georgia Strait over a twelve-year period, specifically from 2006 to 2018.
A preliminary analysis reveals a marked increase in the seal population, a modest rise in the dolphin population, while the whale population exhibited minimal variation throughout the observed timeframe.
In 2006, the populations were recorded at 20 seals, 10 whales, and 5 dolphins. By 2010, sealing numbers remained steady at 20; however, whale populations experienced a slight increase to 15, and dolphin numbers rose to 10. Notably, in 2014, the seal population surged to 30, while whale and dolphin populations consolidated at 20 and 10, respectively. By 2018, seals had proliferated significantly to 50 individuals, whereas whale numbers remained unchanged at 20, and the dolphin population increased modestly to 15. This reflects a generally positive trend for seals, a comparatively stable whale demographic, and a gentle uptrend in dolphins.
Overall, the comparative analysis of marine mammal populations over the specified years signifies distinct trajectories for each species. The seal population demonstrated remarkable growth, climbing from 20 in 2006 to 50 by 2018. Dolphins, initially the least populous, exhibited gradual growth from 5 to 15, while the whale population fluctuated moderately around 10 to 20 individuals, indicating a stable yet unimpressive status. Hence, the data underscores marked disparities in population dynamics among these marine species, highlighting the importance of ongoing ecological monitoring.