Skip to main content

Home/ Marine Ecosystems PI 11-12/ Group items tagged extinction

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
Tayler Robertson

Marine life facing mass extinction - 0 views

articles.cnn.com/...nction-coral-reefs-marine-life

extinction coral reefs CNN

shared by Tayler Robertson on 08 Nov 11 - No Cached
  • "The rate of change we are seeing in the quantities of carbon dioxide going into the atmosphere and then being absorbed into the oceans is so great that it is difficult to compare what is happening now with what has happened in the past but we do know that past disturbances in the carbon cycle have been a feature of mass extinction events."
    • Elle Milkes
      Elle Milkes on 08 Nov 11
       
      Marine Ecosystems need a certain type of environment to thrive. Recently, Marine Ecosystems are receiving a ton of Carbon Dioxide Emissions which relate to The Atmosphere Lecture notes. Carbon Dioxide is 1% of our earth's atmosphere so if Marine Ecosystems are receiving too much Carbon Dioxide, the balance of the atmosphere/ocean could be disturbed causing extinction.
  • caused by the "deadly trio" of global warming, ocean acidification and lack of water oxygen or hypoxia.It states that these three factors are present in the ocean today and gives examples of marine ecosystems suffering severe disturbance
    • Elle Milkes
      Elle Milkes on 08 Nov 11
       
      Global Warming can have detrimental effects on Marine Ecosystems by causing disturbances in the natural life cycle. Global Warming in our APES notes causes sea levels to rise by melting ice caps and by thermal expansion. The melting of ice caps would cause some marine animal's ecosystems to become destroyed which could cause more extinction.
  • global warming, pollution and habitat loss, with a high risk of "major extinctions" according to a panel of experts.
  • ...15 more annotations...
    • Tayler Robertson
      Tayler Robertson on 09 Nov 11
       
      different threats being posed towards marine life
  • examined the combined effects of pollution, acidification, ocean warming, over-fishing and depleting levels of oxygen in the water.
    • Tayler Robertson
      Tayler Robertson on 09 Nov 11
       
      meeting of distinguished marine scientists meet at Oxford to discuss the combined effects of pollution, acidification, ocean warming, over-fishing, and depleting levels of oxygen in the water.
  • oceanic conditions are similar to those of "previous major extinctions of species in Earth's history," and that we face losing marine species and entire marine ecosystems, such as coral reefs, within a single generation.
    • Tayler Robertson
      Tayler Robertson on 09 Nov 11
       
      oceanic conditions are not good right now! we risk losing coral reefs 
  • speed of decline of marine ecosystems is faster than predicted.
    • Tayler Robertson
      Tayler Robertson on 09 Nov 11
       
      global warming/thermal expansion playing a huge role in ecosystem destruction
  • "The rate of change we are seeing in the quantities of carbon dioxide going into the atmosphere and then being absorbed into the oceans is so great that it is difficult to compare what is happening now with what has happened in the past but we do know that past disturbances in the carbon cycle have been a feature of mass extinction events."
    • Tayler Robertson
      Tayler Robertson on 09 Nov 11
       
      "deadly trio" of effects
  • global warming, ocean acidification and lack of water oxygen or hypoxia.
  • "coral bleaching" in 1998 that killed 16% of all the world's tropical coral reefs.
  • over-fishing
  • "The challenges for the future of the ocean are vast, but unlike previous generations we know what now needs to happen. The time to protect the blue heart of our planet is now, today and urgent."
  • describe oceans as the earth's circulatory system, performing numerous vital functions which make the planet habitable, such as creating more than half our oxygen, driving weather systems while modulating the atmosphere, as well as providing us with vital resources.
    • Tayler Robertson
      Tayler Robertson on 09 Nov 11
       
      ocean anology
  • Elle Milkes on 08 Nov 11
     
    Effects of Global Warming on Marine Ecosystems
  • Tayler Robertson on 09 Nov 11
     
    CNN World report that global warming, pollution, and habitat loss are threatening marine ecosystems.
Ann Marie Hickey

Global Warming and its Effect on Marine Populations - 0 views

geography.about.com/...globalmarine.htm

global warming marine ecosystems climate change

shared by Ann Marie Hickey on 09 Nov 11 - No Cached
  • As air temperatures rise, water becomes less dense and separates from a nutrient-filled cold layer below. This is the basis for a chain effect that impacts all marine life who count on these nutrients for survival.
    • Ann Marie Hickey
      Ann Marie Hickey on 09 Nov 11
       
      global warming
  • Changes in natural habitats and food supply Changing ocean chemistry/acidification
  • If some organisms cannot adapt to their new marine environment, they will not flourish and die off.
    • Ann Marie Hickey
      Ann Marie Hickey on 09 Nov 11
       
      Organisms will go extinct at at much more rapid rate due to change in climate extremes resulting from global warming.
  • ...1 more annotation...
  • According to the World Wildlife Fund, a small increase of two degrees Celsius would destroy almost all existing coral reefs.
    • Ann Marie Hickey
      Ann Marie Hickey on 09 Nov 11
       
      Great Barrier Reef-millions of different species of marine organisms and animals; millions of different extinct species from climate change along with fishing and pollution.
1 - 2 of 2
Showing 20▼ items per page