Notes: -Commercial fishing causes should be reduced to let them repopulate. -Eutrophication is overenrichment of the sea by nutrients-> promote plant growth. -The government should do more to protect the ocean -Fertilizing chemicals might cause microscopic plants to float near the surface causing it to overgrow. -Oxygen levels are affected mainly by photosynthesis from marine plants, algae and phytoplankton. -Oxygen levels are affected by photosynthesis from marine plants, algae and phytoplankton. -Scientists have documented few cases of dead zone recovery, because reducing nutrient runoff from the land requires major changes in agricultural practices and wastewater treatment efforts.
Summary: What is Eutrophication? Eutrophication is the over enrichment of the sea by nutrients that contains nitrogen and phosphorus that helps plant growth which affects Phytoplankton. Over population of Phytoplankton will cause dead zones. This leaves algal blooms which covers the surface of the ocean water which does not allow plants to continue with their photosynthesis which does not create oxygen. Oxygen is extremely important to ocean because many marine animals depend on it.
Reflection: This article is really surprising to me because they stated that the largest oxygen minimum zone appeared along the western coastline. Global warming seems to be getting worse each year and the oxygen level of Pacific Ocean is falling quickly which concerns us because the warm conditions will cause some part of the ocean to be uninhabitable for a lot of species in the ocean which need oxygen to survive. I think it is very likely this something bad like this will change the oxygen concentration in the ocean, so we need to figure something things out about global warming quickly because it has been a problem for decades.