Which outcome reduces fisheries' productivity when coastal upwelling weakens?

💡 Explanation

Reduced upwelling weakens the transfer of nutrients such as nitrates and phosphates from deep cold waters to the surface layer via nutrient cycling, because the driving density gradient decreases; therefore reducing phytoplankton and, consequentially, fish populations, rather than increasing salinity changes.

• Which atmospheric stream behavior results from Earth's rotation effects?
• Which mechanism leads to sinkhole formation when carbonic acid saturates limestone?
• Which mechanism increases lahar hazard during and after stratovolcano eruption sequences?
• Following heavy tephra deposition, which outcome becomes increasingly likely due to changes in load distribution?
• Which horizon development outcome characterizes rapid mineral weathering?
• Which event follows explosive eruptions if tephra erosion slows?