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Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
Urban ecology: will we act before its too late?
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Urban ecology: will we act before its too late?

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This talk is given at CiSTUP foundation day, on 4 Jan 2010, IISc, Bangalore. Deals with Urban ecology in general and what I am interested in, in particular. Simple, straight lecture.

This talk is given at CiSTUP foundation day, on 4 Jan 2010, IISc, Bangalore. Deals with Urban ecology in general and what I am interested in, in particular. Simple, straight lecture.

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  • 1. Gururaja KV Centre for i nfrastructure, Sustainable Transportation and Urban Planning (CiSTUP), Indian Institute of Science, Bangalore - 560 012 [email_address]
  • 2.
    • Five points and some thing (MORE)!
    • Overview of Urban Ecology
    • Key issues, goals and urban indicators
    • Amphibians as surrogates and their uniqueness
    • Key questions I am interested in and addressing
  • 3.
    • world’s population, 29% in 1950 to 60% in 2025 in urban areas
    • More than 12 cities with over 20 million
    • >34 % than present ‘ecological footprint’
    • Increase in urban expanse
    • And coming to our own Bangalore
    • 1.4lakh to 56.9 lakh people (1871 to 2001)*
    • Area from 69 sq.km to 741 sq.km*
    • > 200 odd lakes to <80 lakes
    • > temperature
    • < green space
    • Frequent Flooding…and
    * Sudhira etal, 2007;
  • 4.
    • Yalahanka lake
    • 3137 individuals, 19 species water birds on 15 th Jan, 1989
    • Yesterday, 3 nd Jan 2010, 800 individuals, 16 species
  • 5.
      • Ecology is “the study of spatial and temporal patterns of the distribution and abundance of organisms, including causes and consequences ” (Scheiner and Willig, 2007)
      • Urban ecology refers to “….such study in urban areas/system”. It has two dimensions …
        • describes urban design programs or designs that incorporate political, infrastructure (roads, sewers, etc.), social and economic considerations
        • the area of biology that is concerned with urban areas. Concerned in terms of the relationship, interactions, types, and numbers of species found within urban habitats.
  • 6.
    • To find out what kind of nature exists in urban system.
    • Knowledge about ecological processes
    • Based on this knowledge, management schemes maintaining the diversity of urban system to be designed.
    • Interdisciplinary research involving natural and social sciences is imperative for a holistic approach to integrating ecology into the process of urban planning.
  • 7.
    • Migration, dispersal and extinction of species
    • Habitats, environmental factors and resources
    • Disturbance
    • Colonization of open habitats
    • Succession
    • Biological interaction
    • Species richness and diversity
    • Complexity, stability and equilibrium
    • Productivity
  • 8.
    • Who are the indicators for?
    • What are the indicators for?
    • What is the urban perspective?
    • What is their scope?
    • What is the political and organizational context?
    • By whom are they developed and implemented?
    • An indicator is intended to point towards some desirable state or course of action.
    • Each indicator is actually a kind of small model in its own right, implying elements of cause and effect, of social norms that constitute progress, and of policy actions and outcomes.
  • 9.
    • Amphibians are to simply put frogs and toads
  • 10.  
  • 11.  
  • 12.
    • Exchange of gases through skin
  • 13. Photo: Sameer Ali
  • 14.
    • The best in pest control, Bufotonin, epibatidine – pain killers; delicacy, media for microbial culture, “cryosurgery”
    • Rigveda verse 7, 13 shlokas Frog hymn
  • 15.
      • What are the driving forces that determine the lessening of diversity of amphibians in urban system?
      • Why does generalist predominate in such landscapes, more precisely in urban ecosystem?
      • What are the key features of amphibians that make them to survive and predominate in urban system in comparison to neighboring natural habitats?
      • Does the above question also answer some of the key urbanization processes dominated by humans? And
      • What are the key ecological processes that need to be adapted in urban planning for sustainable urbanization?
  • 16.
    • 13 amphibians from Bangalore (WWF, 1990), what are available now?
    • Distribution across major land-use
    • Prioritize regions of high importance (in terms of urban biodiversity)
  • 17.
    • Using amphibian occupancy during breeding season, marking effective buffer area around lakes
    • Change in lake catchment and their drivers!
    • Planning adequate lake area for longer persistence (Small perished in no time!)
    t 1 t 2 Drivers? Buffer zone?
  • 18.
    • Thank You

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