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.

• Salt deposition increases significantly surrounding endorheic stream deltas. Which climate mechanism causes this effect?
• Which erosion event results from high pore liquid pressure in sediments on steep volcanic slopes?
• Which consequence results when increased organic acid production occurs within cave stream sediments?
• Following a volcanic eruption depositing substantial tephra, which outcome initiates accelerated glacial melting downstream?
• Which outcome reduces streamflow variability during seasonal Arctic ice melt?
• Which risk increases when localized uplift near karst cave systems causes surface stream incision?