Though scientists have long been sounding the alarm over the environment some people refuse to listen. Many countries have introduced environmental policies and series of initiatives to raise awareness at community level, but the journey to environmental awareness and… Read More ›
Condition of Oceans
More than five trillion pieces of plastic are estimated floating on the surface of the world’s oceans. It has been claimed that there is now enough plastic to form a permanent layer in the fossil record.
The marine environment globally is challenged by a number of factors, including environmental degradation, habitat destruction, overfishing, and climate change, so there is a real need for protection. Under the Convention on Biological Diversity, the international community has agreed that we will protect 10 percent of the oceans in marine protected areas by 2020.
Researchers have more than once warned of “dead zones” and toxic algal blooms as a consequence of changing climatic conditions. Ocean temperatures are increasing, and this in turn encourages a new set of biochemical processes.
Professor Hollibaugh and a colleague report in the journal Environmental Science and Technology that over the course of eight summers they measured peaks of nitrite, alongside massive increases in the numbers of the microorganisms that produce it, in coastal waters off Georgia.
We now have a 2017 event, which is not quite as bad as 2016, but certainly worse than the first two events that we studied [in 1998 and 2002]. That is significant because it postpones any hope of recovery. The current bleaching occupies a different geographical footprint from last year, which is bad news because it means between last year and this year a much greater extent of the Great Barrier Reef has now been damaged. In 2017, the hot water was in the middle of the Great Barrier Reef, the central section; last year it was in the north.