Final answer:
Discrepancies of assortment and quantity along channels are managed by monitoring the discharge of ballast water from ships, which varies by ship type and port. Studies show that bulkers discharge ballast water more frequently than other types of ships, which affects the spread of non-indigenous species.
Step-by-step explanation:
In the context of marine biology and environmental science, dealing with discrepancies of assortment and quantity typically occurs in channel management, specifically addressing the accumulation and dispersal of marine species via ballast water (BW) from ships.
Bulker ships, as detailed in the studies, are more likely to discharge ballast water compared to container ships and roll-on/roll-off (RoRo) ships. These differences in discharge patterns are critical for managing ports and channels to prevent the spread of NIS like barnacles and oysters that may cause ecological disruption.