Policy Sciences

, Volume 39, Issue 4, pp 361–377 | Cite as

A spatial analysis of green teams: a tactical response to marijuana production in British Columbia



Over a period of 4 years (1997–2000), British Columbia (BC) experienced tremendous growth in the illicit production and distribution of domestically grown marijuana. By the close of 2000, each policing jurisdiction in BC had adopted a particular policy in response to grow operation proliferation. In summary, four policy responses were noted. First, some maintained the status quo wherein enforcement of police initiated investigations and citizens’ tips continued, but with no additional resources specifically dedicated to grow operations. Second, some jurisdictions suspended the majority of investigation and enforcement of grow operations. Third, some agencies implemented or reinforced existing resource intensive drug squads, which focused on trafficking, sales and production of all types of drugs. Finally, some of the jurisdictions formed specialized tactical units known as “green teams” that focused solely on the enforcement of marijuana production. In this paper, we evaluate the effectiveness of green teams using a Geographic Information System (GIS) and difference-in-difference estimates. The results indicate that green teams decrease grow operations within their target area without significant displacement to surrounding areas.


Displacement Criminal justice policy Police crackdown GIS Policing Marijuana Policy evaluation 


  1. Bailey, W. C., & Peterson, R. D. (1999). Capital punishment, homicide and deterrence. In M. A. Zahn, & M. D. Smith (Eds.), Homicide: A Sourcebook of social research. Thousand Oaks, CA: Sage Publications.Google Scholar
  2. Beard, T. R., Grant P., & Saba, R. (1995). Border-crossing sales, tax avoidance and state tax policies: An application to alcohol. Southern Economic Journal, 64, 293–306.CrossRefGoogle Scholar
  3. Bowers, K. J., & Johnson, S. D. (2003). Measuring the geographical displacement of crime. Journal of Quantitative Criminology, 19(3), 275–301.CrossRefGoogle Scholar
  4. Braga, A. (2001). The effects of hot-spots policing on crime. Annals of the American Academy of Political and Social Science. 578, 104–125.CrossRefGoogle Scholar
  5. Braga, A. A., Weisburd, D. L., Waring, E. L., Greene-Mazerolle, L., Spelman, W., & Gajewski, F. (1999). Problem-oriented policing in violent places: A randomized controlled experiment, Criminology, 37, 541–580.CrossRefGoogle Scholar
  6. Brantingham, P. J., & Brantingham, P. L. (1984). Microspatial analysis of crime, in patterns in crime. New York: Macmillan Publishing Company.Google Scholar
  7. Brantingham, P. L., & Brantingham, P. J. (2003a). Crime prevention and the problem of crime displacement: estimating quantum of displacement using a cohort component approach. In H. Kury, & J. Obergfell-Fuchs (Eds.), Crime prevention: New approaches mainz. Germany: Weisser Ring, Gemeinnützige Verlags-GmbH.Google Scholar
  8. Brantingham, P. L., & Brantingham, P. J. (2003b). Anticipating the displacement of crime using the principles of environmental criminology. Crime Prevention Studies, 16, 119–148.Google Scholar
  9. Chainey, S., & Ratcliffe, J. (2005). GIS and crime mapping. West Sussex: Wiley.Google Scholar
  10. Clarke, R. V. (1997). Situational crime prevention. New York: Harrow and Heston.Google Scholar
  11. Clarke, R. V., & Weisburd, D. L. (1994). Diffusion of crime control benefits: Observations on the reverse of displacement. In R. V. Clarke (Ed.), Crime prevention studies. Monsey. NY: Willow Tree Press.Google Scholar
  12. Coates, D., & Humphries, B. (1999). The growth effects of sports Franchises, Stadia and Arenas, Journal of Policy Studies and Management, 18, 601–624.CrossRefGoogle Scholar
  13. Coats , R. M. (1997). A note on estimating cross-border effects of cigarette taxes. National Tax Journal, 573, 84.Google Scholar
  14. Cohen, J., & Ludwig, J. (2003). Policing crime guns. In J. Ludwig, & P. Cook (Eds.), Evaluating gun violence: Effects on crime and violence. Washington, D.C.: Brookings Institution Press.Google Scholar
  15. Davis, R., & A. Lurigio (1996). Fighting back: Neighborhood Antidrug Strategies. Thousand Oaks, CA: Sage.Google Scholar
  16. Eadington , W. (1995). Economic development and the introduction of Casinos: Myths and realities. Economic Development Review, 13, 51–54.Google Scholar
  17. Eck, J. (1993). The threat of crime displacement. Criminal Justice Abstracts, 25, 527–546.Google Scholar
  18. Green, L. (1996). Policing places with drug problems. Thousand Oaks, CA: Sage.Google Scholar
  19. Greenbaum , R., & Tita G. E. (2004). The impact of violence surges on neighborhood business activity. Urban Studies, 41, 2495–2514.CrossRefGoogle Scholar
  20. Greene-Mazerolle, L., Price, J. F., & Roehl, J. (2000). Civil remedies and drug control: A randomized field trial in Oakland, CA. Evaluation Review, 24, 212–241.CrossRefGoogle Scholar
  21. Grogger, J. (2002). The effects of civil gang injunctions on reported violent crime: Evidence from Los Angeles County. Journal of Law and Economics, XLV, 69–90.CrossRefGoogle Scholar
  22. Hesseling, R. (1994). Displacement: A review of the empirical literature. Crime Prevention Studies, 3, 197–230.Google Scholar
  23. Kennedy, D. M. (1993). Closing the market: Controlling the drug trade in Tampa, Florida. Washington, D.C.: U.S. Department of Justice, National Institute of Justice.Google Scholar
  24. Knutsson, J. (1998). The Swedish experience of situational crime prevention. Studies on Crime and Crime Prevention, 7, 189–212.Google Scholar
  25. Maher , L., & Dixon D. (1999). Policing and public health: Law enforcement and harm minimization in a street level drug market. British Journal of Criminology, 39, 488–512.CrossRefGoogle Scholar
  26. Maher , L., & Dixon, D. (2001). The cost of crackdowns: Policing Cabramatta’s Heroin Market. Current Issues in Criminal Justice, 13, 5–22.Google Scholar
  27. McCaffrey D., Ridgeway G., & Morral A. (2004). Propensity score estimation with boosted regression for evaluating adolescent substance abuse treatment. Psychological Methods, 9, 403–425.CrossRefGoogle Scholar
  28. McGarrell, E. F., Chermak, S., Weiss, A., & Wilson, J. (2001). Reducing firearms through directed police patrol. Crime and Public Policy, 1, 119–148.CrossRefGoogle Scholar
  29. Meyer, B. (1995). Lessons from the U.S. unemployment insurance experiments. Journal of Economic Literature, 33, 91–131.Google Scholar
  30. Nelson, M. (2002). Using excise taxes to finance state government. Do neighboring state taxation policy and cross-border markets matter? Journal of Regional Science, 42, 731–752.CrossRefGoogle Scholar
  31. Novak, K. J., Hartman, J. L., Holsinger, A. M., & Turner, M. G. (1995). The effects of aggressive policing of disorder on serious crime. Policing—An International Journal of Police Strategies and Management, 22, 171–190.CrossRefGoogle Scholar
  32. Plecas, D., Malm A., & Kinney B (2005). Marihuana growing operations in British Columbia Revisited 1997–2003. Abbotsford: International Centre for Urban Research Studies (ICURS).Google Scholar
  33. Potter, G., Gaines, L., & Holbrook, B. (1992). Blowing smoke: An evaluation of marijuana eradication in Kentucky. American Journal of Police, 9, 97–116.Google Scholar
  34. Repetto, T. A. (1974). Residential crime. Cambridge, MA: Ballinger.Google Scholar
  35. Ridgeway, G. (2006). Assessing the effect of race bias in post-traffic stop outcomes using propensity scores. Journal of Quantitative Criminology, 22, 1–29.CrossRefGoogle Scholar
  36. Rosenbaum, P. R., & Rubin, D. B. (1983). The central role of the propensity score in observational studies for causal effects. Biometrika, 70, 41–55.CrossRefGoogle Scholar
  37. Rosenbaum, P. & Rubin, D. B. (1984). Reducing the bias in observational studies using subclassifaction on the propensity score, Journal of American Statistical Association, 79, 516–524.CrossRefGoogle Scholar
  38. Saba, R., Beard, T. R., Ekelund, Jr. R., & Ressler, R. (1995). The demand for cigarette smuggling. Economic Inquiry, 33, 189–202.CrossRefGoogle Scholar
  39. Scott, M. S. (2003). The benefits and consequences of police crackdowns. Problem-oriented guides for police. Response Guides Series. U.S. Department of Justice: Community Oriented Policing Services.Google Scholar
  40. Sherman, L. (1997). Policing for crime prevention. In L. Sherman, D. Gottfredson, D. MacKenzie, J. Eck, P. Reuter, & S. Bushway (Eds.), Preventing CRime: What Works, What Doesn’t, What’s Promising. Washington, D.C.: U.S. Department of Justice, Office of Justice Programs.Google Scholar
  41. Sherman, L., & Rogan, D. (1995). Deterrent effects of police raids on crack houses: A randomized, controlled experiment. Justice Quarterly, 12, 755–781.CrossRefGoogle Scholar
  42. Siegel, D., & Anders, G. (1999). Public policy and the displacement effects of casinos: A case study of riverboat gambling in Missouri. Journal of Gambling Studies, 15, 105–121.CrossRefGoogle Scholar
  43. Smith, M. R. (2001). Police-led crackdowns and cleanups: An evaluation of a crime control initiative in richmond. British Journal of Criminology, 38, 61–77.Google Scholar
  44. Tita, G., Riley, K. J., Ridgeway, G., Grammich, C. A., Abrahamse, A., & P. W. Greenwood. (2003). Reducing gun violence: Results from an intervention in East Los Angeles. Santa Monica, CA: RAND.Google Scholar
  45. Weisburd, D. L., & Green, L. (1995). Measuring immediate spatial displacement: methodological issues and problems. In J. Eck, & D. L. Weisburd (Eds.), Crime and Place. Monsey, NY: Criminal Justice Press.Google Scholar
  46. Williams, P. (2001). Transnational criminal networks, In. J. Arquilla, & D. Ronfeldt (Eds.), Networks and netwars: The future of terror, crime, and militancy. Santa Monica, CA: RAND.Google Scholar
  47. Wood, E., Spittal, P. M., Small, W., Kerr, T., Li, K., Hogg, R. S., Tyndall, M. W., Montaner, J. S. G., & Schechter, M. T. (2004). Displacement of Canada’s largest public illicit drug market in response to a police crackdown. Canadian Medical Association Journal, 170, 1551–1557.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLP 2007

Authors and Affiliations

  1. 1.Criminology, Law and SocietyUniversity of California, IrvineIrvineUSA
  2. 2.Department of Criminal JusticeUniversity of California State, Long BeachLong BeachUSA

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