Search This Blog

Wednesday, August 3, 2011

Most Vulnerable Deep-Sea Habitats Identified




To read an article at the LiveScience.com website entitled, "Most Vulnerable Deep-Sea Habitats Identified" please click on the following link: http://www.livescience.com/15358-climate-change-biggest-impact-deep-sea.html From the article: "a team of more than 20 scientists has found which human impacts are having the most deleterious effects on the deep sea and which will be most important in the future. They also identify the specific deep-sea habitats most vulnerable to human impact."


A link to the scientific article which the LiveScience content is based upon and which is entitled,
Man and the Last Great Wilderness: Human Impact on the Deep Sea,  is:
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0022588 


This scientific article has been summarized at the escience.news.com website in the following manner:

"In the past, the main human impact affecting deep-sea ecosystems was the dumping or disposal of litter into the oceans. These activities were banned in 1972, but their consequences are still present today, together with the continuing illegal disposal of litter from ships and the arrival of litter and contaminants from coastal areas and river discharges. In particular, the accumulation of plastics on the deep seafloor, which degrade into microplastics, called mermaid tears, that can be ingested by the fauna, has consequences still unknown but predicted to be important."


"Currently, and because of the reduction of resources on land and in shallow waters, the largest direct impacts come from the exploitation of deep-sea resources and, in particular, from fisheries. In the future, however, the authors of this study predict that the most pervasive impacts may come from ocean acidification and climate change, which act at the global scale and can have important effects from surface waters to the abyssal seafloor. Some of these effects include an increase in water temperature that can cause important changes in stratification of the water column, accumulation of nutrients, and oceanic water circulation with corresponding alteration of hypoxia and faunal community structure."

"Most importantly, the authors predict synergies amongst certain anthropogenic impacts and, in particular, between climate change and activities such as resource exploitation, wherein combined impacts may be particularly deleterious to deep-sea faunal communities."

"According to the experts, seamounts, cold-water corals, upper margin slopes and submarine canyons are the habitats most likely to be affected by anthropogenic impacts in the short and mid time scale. The activities that may be of highest impact are deepwater fishing together with climate change and ocean acidification, as well as the accumulation of marine litter and chemical pollutants. The authors also highlight other activities that may put at risk deep-sea communities in the near future: mineral extraction at hydrothermal vents and possibly on abyssal plains."

"The main problem is that we still know very little of what we call the deep sea, making it difficult to evaluate accurately the real impact of industrial activities, litter accumulation and climate change in the deep sea habitats. The deep sea is considered to expand from the end of the continental shelf at approximately 200-250 m depth to the great abyssal depths between 3000 and 6000 m, which may reach down to 11 km in areas such as the Mariana Trench." (source:http://esciencenews.com/articles/2011/08/02/man.and.last.great.wilderness.human.impact.deep.sea )

So now we know which deep-sea areas are most vulnerable to human behaviors, we also know which human activities are the reason why these deep sea-areas are vulnerable. It is time we change our behavior to not only make sure that these deep-sea areas do not become damaged but also to help the levels of the ocean above the deep sea, because many of these human activities have been linked to damage in these levels!

Source of image:http://marinebio.org/i/deepsea.jpg

No comments:

Visit GM Alexandra Kosteniuk's Women's Chess Blog:Please click on the image below:

Visit GM Alexandra Kosteniuk's Women's Chess Blog:Please click on the image below:
Chess needs more women and girl participants and administrators!

Thoughts worth thinking about

"Our subconscious minds have no sense of humor, play no jokes and cannot tell the difference between reality and an imagined thought or image. What we continually think about eventually will manifest in our lives."-Sidney Madwed



Laws alone can not secure freedom of expression; in order that every woman and man present their views without penalty, there must be spirit of tolerance in the entire population.- Albert Einstein Too often we underestimate the power of a touch, a smile, a kind word, a listening ear, an honest compliment, or the smallest act of caring, all of which have the potential to turn a life around. - Leo Buscaglia



A person's true wealth is the good he or she does in the world. - Mohammed



Our task must be to free ourselves... by widening our circle of compassion to embrace all living creatures and the whole of nature and its beauty. -Albert Einstein



The best way to find yourself, is to lose yourself in the service of others. - Ghandi



The unselfish effort to bring cheer to others will be the beginning of a happier life for ourselves. - Helen Keller



Aim for success, not perfection. Never give up your right to be wrong, because then you will lose the ability to learn new things and move forward with your life. Remember that fear always lurks behind perfectionism. Confronting your fears and allowing yourself the right to be human can, paradoxically, make yourself a happier and more productive person. - Dr. David M. Burns



Life is as dear to a mute creature as it is to man. Just as one wants happiness and fears pain, just as one wants to live and not die, so do other creatures. -His Holiness The Dalai Lama



Mankind's true moral test, its fundamental test (which lies deeply buried from view), consists of its attitude towards those who are at its mercy: animals. And in this respect mankind has suffered a fundamental debacle, a debacle so fundamental that all others stem from it. -



Milan Kundera, The Unbearable Lightness of Being



The worst sin towards our fellow creatures is not to hate them, but to be indifferent to them. That's the essence of inhumanity. -George Bernard Shaw

Ego's trick is to make us lose sight of our interdependence. That kind of ego-thought gives us a perfect justification to look out only for ourselves. But that is far from the truth. In reality we all depend on each other and we have to help each other. The husband has to help his wife, the wife has to help the husband, the mother has to help her children, and the children are supposed to help the parents too, whether they want to or not.-Gehlek Rinpoche Source: "The Best Buddhist Writing 2005 pg. 165

The hostile attitude of conquering nature ignores the basic interdependence of all things and events---that the world beyond the skin is actually an extension of our own bodies---and will end in destroying the very environment from which we emerge and upon which our whole life depends.