Global Warming Threatens Marine Food Chain
A new report shows that overall ocean productivity decreases when the climate warms. Global warming is devastating the foundations of the Earth's marine food chain [more | more2] throughout huge swaths of tropical and sub-tropical seas. Microscopic plants known as phytoplankton [search] respond to rising ocean temperatures by scaling down their productivity by 30% or more – severely reducing overall marine biological productivity. “Phytoplankton are the microscopic plant life that zooplankton and other marine animals eat, essentially the grain crop of the world's oceans.” Phytoplankton generate about half the world's biological productivity, removing some 100 million tonnes of CO2 from the atmosphere each day. This is but one potentially deadly positive feedback whereby global warming leads to intensified heating – others including rainforest die-back [search], melting permafrost [search] and release of ocean methane hydrates [search]. Global heating is further devastating oceans through acidification, creation of dead zones and species extinctions. This is at least the third recent major peer reviewed scientific journal article showing anticipated global warming biological side effects are already happening. Global heating is weakening and breaking down the global ecological system – Gaia if you will. We are witnessing the dismantling of human habitat and end of being.