Oxygen Depleted Zones Are Expanding Globally Along Coasts and The High Seas
Dead Zones are areas in the ocean that are depleted of oxygen to the point where life is not sustainable. They are found along coasts and some places in the high seas. Dead Zones along the coast are caused by water pollution, specifically increased nutrients that are discharged into rivers from point (direct discharges) and non-point sources (indirect discharges).
For example, the Gulf of Mexico Dead Zone starts from nutrients deposited along the Mississippi River and accumulate downstream to the mouth of the Mississippi. During the Spring, phytoplankton blooms grow in huge numbers due to the increased nutrient source and are pushed out into the Gulf of Mexico. The phytoplankton eventually die off and sink to the bottom, where they are decomposed by the microbial loop. The microbes use up oxygen to breakdown the plankton. The amount of oxygen lost in the water is directly related to the amount of plankton available. In other words, a lot of oxygen is lost. The problem is compounded by the distance the Mississippi River can push the plankton across the Northern Gulf of Mexico, sometimes it goes all the way to Texas.
The high seas are also losing oxygen due to Climate Change. Higher global temperatures means the ocean waters can’t hold as much oxygen.
Dead zones are being found all over the world and a recent article on Mongabay explains why the zones are expanding. The expansion means we will see a bigger problem in the future including less seafood and healthy ocean habitats.
Climate Change Is Messing With The Female to Male Sex Ratio in Green Sea Turtles in the Great Barrier Reef
Scientists have discovered the Feminization of green sea turtles along the Great Barrier Reef and it is due to Climate Change. Higher global temperatures can affect sea turtles are there sexual orientation is temperature dependent while they develop in the nests. Scientists found that 99% of adults in the warmer, northern Great Barrier Reef are female compared to 65% in the southern part of the Great Barrier Reef.
Sea Turtles are already facing major issues that are causing them to be categorized as endangered all over the world. Feminization is another problem that sea turtles face in their future and require the reduction and elimination of man made Climate Change.
Resource Of The Week
Check out Oceana-run’s Azula website. It highlights Ocean animal stories and exploration.
Enjoy the Podcast!
Check Out The Speak Up For Blue Podcast on One Of These Channels:
Sound Cloud: http://www.speakupforblue.com/soundcloud
If you are interested in creating a podcast for your conservation organization or social enterprise, then connect with me for my podcasting services so I can help you get started and connect with your audience. Email me at email@example.com
Are you looking to start off your Marine Science and Conservation Career, but don’t know where to begin or it hasn’t gone the way you expected to? Join us on our next Marine Conservation Career Q&A. All you need to do is contribute at least $1/month to our Patreon Campaign to attend:Contribute to our Patreon Campaign
Don’t forget to join our Speak Up For Blue Facebook Group to join like-minded individuals who are all about living for a better Ocean. Join our Facebook Group for the Podcast.