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

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