Using Conditional Lorenz Curves to Examine Consolidation in New Zealand Commercial Fishing

December 2012
Marine Resource Economics;Winter2012, Vol. 27 Issue 4, p303
Academic Journal
We use individual transferable quota (ITQ) consolidation in New Zealand's commercial fishing to illustrate three different methods of measuring con- solidation: the Herfindahl Hirschman Index (HHI), conditional Gini Coefficients, and conditional Lorenz curves. The Lorenz curve allows for conditional specification over stratified groupings, which yields straightforward in terpretation and illustration of overall inequality for more nuanced interpretations.


Related Articles

  • Market Power, Industrial Organization and Tradeable Quotas. Adelaja, Adesoji; menzo, Julia; Mccay, Bonnie // Review of Industrial Organization;Oct1998, Vol. 13 Issue 5, p589 

    Individual Transferable Quotas (ITQs) were introduced into the Mid-Atlantic Surf Clam and Ocean Quahog fishery to reduce over-capitalization while conserving clam populations. Because the number of operators in the fishery declined drastically since the introduction of this policy, there is...

  • New Zealand fishery is tipped to bring in an anticipated NZ$30 million harvest. Andrae, Dominic // Ausmarine;Nov2006, Vol. 29 Issue 1, p10 

    The article reports that a number of species of surf clams are now included in the individual transferable quota system of New Zealand. Surfco, a consortium representing five different quota holders, has estimated that each kilometre of the coastline in Hawke's Bay could yield 16 tonnes of surf...

  • RELATIONSHIPS BETWEEN SOME NOTIONS WHICH ARE COMMON TO RELIABILITY THEORY AND ECONOMICS. Chandra, Maheshi; Singpurwalla, Nozer D. // Mathematics of Operations Research;Feb81, Vol. 6 Issue 1, p113 

    Our objective in writing this paper is to point out some interesting relationships between the commonly referred to indices of economic inequality, and a central notion used in reliability theory. Specifically, we show that the "Lorenz curve" and the "Gini index" of economics are related to the...

  • LORENZ CURVE AND THE MEASUREMENT OF LOW, MIDDLE AND HIGH STRATA OF INCOMES. Toshkov, Luben T.; Madjarova, Tatyana S.; Ignatov, Tzvetan // Economic Studies;2010, Vol. 19 Issue 3, p95 

    The authors suggest a new method to determinate the limits of the three basic income groups. The Lorenz curve is split of three parts. The middle part corresponds to the middle stratum of incomes. The projections of this part on both axes are equal segments. The empirical Lorenz curve is...

  • Thalassorama. Pascoe, Sean // Marine Resource Economics;Winter1993, Vol. 8 Issue 4, p395 

    Outlines the main challenges and successes that have occurred in the Australian South East fishery as a result of individual transferable quotas management. Boat types that compose the south east fishery fleet; History of the fishery; Economic performance of the fleet over the period 1989-1990...

  • Further Investigations into the Factors Affecting Compliance with U.K. Fishing Quotas. Hatcher, Aaron; Gordon, Daniel // Land Economics;Feb2005, Vol. 81 Issue 1, p71 

    This paper reports the results of a more recent study of quota compliance in the U.K. fishery that was investigated in an earlier article in this journal (Hatcher et al. 2000). The study collected more detailed data on fishermen's perceptions and experience of enforcement and sought to measure...

  • Initial Effects of the Alaska Halibut IFQ Program: Survey Comments of Alaska Fishermen. Knapp, Gunnar // Marine Resource Economics;Fall1997, Vol. 12 Issue 3, p239 

    Provides the comments of Alaska fishermen on the initial effects of the Alaska Halibut Individual Fishing Quota (IFQ) program. Impact of the IFQ program on the Alaska halibut fishery; Positive and negative effects of the program; Responses of halibut quota share holders to the effects of the...

  • The frequency and quantity of Alaskan groundfish catcher-vessel landings made with and without an observer. Faunce, Craig H.; Barbeaux, Steven J. // ICES Journal of Marine Science / Journal du Conseil;Sep2011, Vol. 68 Issue 8, p1757 

    Faunce, C. H., and Barbeaux, S. J. 2011. The frequency and quantity of Alaskan groundfish catcher-vessel landings made with and without an observer. – ICES Journal of Marine Science, 68: 1757–1763.The North Pacific Groundfish Observer Programme (NPGOP) is one of the largest...

  • Targeting ability and output controls in Australia's multi-species Northern Prawn Fishery. Pascoe, Sean; Punt, André E.; Dichmont, Catherine M. // European Review of Agricultural Economics;Sep2010, Vol. 37 Issue 3, p313 

    The degree to which individual species can be targeted will influence how quotas are set in multi-species fisheries managed through individual transferable quotas (ITQs). In this paper, a multi-output distance function is used to examine fishers' ability to control output mix in a fishery about...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics