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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.
Macey McCarty

Global Warming Threatens Ocean Ecosystems - 0 views

www.ens-newswire.com/...2002-08-14-06.asp

global warming

shared by Macey McCarty on 08 Nov 11 - No Cached
    • Macey McCarty
      Macey McCarty on 08 Nov 11
       
      Increase in Green House Gas effect relates to global warming unit. Humans will helps the temperature change in oceans.
  • decades due to the warming influence of human caused increases in greenhouse gas emissions.
  • alteration of species distributions in ways that may lead to major changes in their interactions with other species, and modifications in the flow of energy and cycling of materials within ecosystems,
    • Macey McCarty
      Macey McCarty on 08 Nov 11
       
      Flow of energy will change as species die down which will corrupt natural food and energy cycles.
    • Macey McCarty
      Macey McCarty on 08 Nov 11
       
      The flow of energy will change as species die down which will corrupt natural food and energy cycles.
  • ...6 more annotations...
  • wetlands, estuaries and coral reefs are particularly vulnerable to climate change, the report concludes. Such ecosystems are among the most biologically productive environments in the world,
    • Macey McCarty
      Macey McCarty on 08 Nov 11
       
      relates to aquifers--says wetlands, estuaries, and coral reefs will be vulnerable because of their location.
  • influence the metabolism of marine species, and alter ecological processes such as productivity and species interactions, the researchers said.
    • Macey McCarty
      Macey McCarty on 08 Nov 11
       
      Marine Ecosystems will be altered and the metabolism of marine species will affect productivity.
  • Rising sea levels could inundate coastal marshes, forcing coastlines further inland and in many cases, eliminating marsh habitats. (Photo by Mary Hollinger, courtesy NOAA)
    • Macey McCarty
      Macey McCarty on 08 Nov 11
       
      Sea levels (caused by the warming of oceans) push coastlines further inland which can destroy marsh habitats.
Anna Grisham

European Commission - Climate Action - Adaptation to climate change - Marine - 0 views

ec.europa.eu/...marine_en.htm

climate change marine soil intrusion impact sea APES

shared by Anna Grisham on 09 Nov 11 - No Cached
  • flooding and erosion, salt intrusion and freshwater shortage, and the gradual loss of coastal ecosystems. Extreme weather and natural disasters will also threaten coastal populations and businesses.
    • Anna Grisham
      Anna Grisham on 09 Nov 11
       
      Such climate change will cause disruptions in marine ecosystems as well as populations on land. Salt intrusion taints drinking freshwater and makes it undrinkable. The erosion and the climate changes will hurt the marine life by increasing the salinization of the water and  harm temperature-sensitive species. The natural disasters will harm the species by physically disrupting their habitats.
  • Changes in regional sea temperatures have already lead to shifts in the distribution of plankton. As the main food source in most marine ecosystems, the availability of plankton has knock-on effects for the entire marine food chain and all species, large or small.
    • Anna Grisham
      Anna Grisham on 09 Nov 11
       
      Since plankton is at the beginning of the food chain, the disruption of its population has repercussions on every level. The ocean is experiencing thermal expansion, which also causes a rise in sea level. The change in the temperatures hurt this marine species.
  • Higher CO2 levels in the atmosphere are already bringing about a decline in the calcification rate of corals and in the future could pass a threshold where reef building is no longer possible.
    • Anna Grisham
      Anna Grisham on 09 Nov 11
       
      CO2 levels are definitely increasing in the atmosphere which evidently effects marine life. This CO2 could potentially hurt the development of reefs. CO2 levels are connected to climate change.
  • Anna Grisham on 09 Nov 11
     
    Impact of climate change on 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.
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