Seminar 7: Biodiversity and Climate Change

Seminar members: caila, caroline, jane, jesse, michelle, marla, jessica s, julieta

Article 1: Nancy B. Grimm, et al, Global Change and the Ecology of CitiesScience 319, 756 (2008);DOI: 10.1126/science.1150195

  • As global warming and climate change take place, the hydrological cycle is affected. Various degrees of the human population is being affected from droughts and flooding.
  • Measures that societies take to combat climate change
     
  1. dramatic shift to urban living
  2. urban ecology has begun to shape the discipline of ecology
  3. society and ecosystems are linked
  4. changes in land use and cover
  5. changes in chemical cycles
  6. climate changes
  7. hydro systems
  8. biodiversity changes

Article 1 Questions

  1. Should design and ecology become synonymous? As Maria Aiolova stated previously, it is ideal to become Urbaneers, embracing multiple disciplines to enrich the final outcome. It is a means of collaboration, of having the minds of different trades come together to meet one goal. One person can’t be an expert in everything
  2. If urban centres were spread out across land, would the impact we have on earth be reduced? 
Image

BINA. mil-hwy-fwy-sprawl_cnu. Why Urban Sprawl is a Problem for Sustainability and Health. JPG. http://binscapes.com/why-urban-sprawl-is-a-problem-for-sustainability-and-health/ (Accessed April 17, 2013)

  • No, in fact the impact would increase because of urban sprawl. With urban sprawl comes increased transport distances, which means more car travel and more emissions which do not benefit the environment in any way. High density is key for short and alternative transport routes and closer proximities to everyday needs.

Article 2: Robert, McDonald et al. Urban growth, climate change, and freshwater availability. PNAS, 2011, 108-15, (6312-6317)

Image

Amin, Zulfiquer Ahmed. The Water Problem. Global Policy Forum, October 8 2007.http://www.calvert.com/water/index.html?lead=0&ecid=201210_homepage_Water (Accessed April 17, 2013)

  • Impacts of climate change on the hydrological cycle, the changing distribution of water, and the changing environmental conditions of areas – the impacts of providing water in a sustainable way
  • 886 million people live in cities that have seasonal water shortages, limited to 100 L of water per person per day.
  • an average of 100 million more people will experience water shortage by 2050 all climate scenarios
  • 3 categories that describe water shortage scenarios are:
  1. water scarcity at 100km
  2. water demand by expanding buffer
  3. no perennial water scarcity at 100km
  • Preparations must be made for emergencies where water may be scarce, where the government would lay aside water in a dam or reservoir for such emergencies

Article 2 Questions:

  1. What are some impacts that climate change can have on the hydrological cycle? As temperature levels rise, the polar icecaps melt and increase the amount of water, developing more flooding which will affect the drinking water in some areas of the world.
  2. Suggest a method for providing water for a city while protecting native fish species? Rainwater connection or recycling water 
  3. Which factor is expected to have a more certain effect on water shortages, climate change or urban growth? There is a correlation between the two, they complement one another. Urban growth results in the development of more greenhouse gases which attribute to climate change. It is a cycle that is interdependent on one another.

 

 

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~ by sbrodick on April 18, 2013.

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